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ef0a8980a2
openwrt-xburst/target/linux/storm/patches/007-mtd.patch
juhosg 32e68db8d0 [storm] refresh patches 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14449 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-02-08 19:14:06 +00:00

4949 lines
136 KiB
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--- a/drivers/mtd/chips/Kconfig
+++ b/drivers/mtd/chips/Kconfig
@@ -220,6 +220,13 @@ config MTD_ROM
This option enables basic support for ROM chips accessed through
a bus mapping driver.
+config MTD_SERIAL
+ tristate "Support for Serial chips in bus mapping"
+ depends on MTD
+ help
+ This option enables basic support for Serial chips accessed through
+ a bus mapping driver.
+
config MTD_ABSENT
tristate "Support for absent chips in bus mapping"
help
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -39,10 +39,15 @@
#include <linux/mtd/cfi.h>
#include <linux/mtd/xip.h>
+//****** Storlink SoC ******
#define AMD_BOOTLOC_BUG
-#define FORCE_WORD_WRITE 0
-
-#define MAX_WORD_RETRIES 3
+//#define FORCE_WORD_WRITE 0
+#define FORCE_WORD_WRITE 1
+#define FORCE_FAST_PROG 0
+
+//#define MAX_WORD_RETRIES 3
+#define MAX_WORD_RETRIES 3 // CONFIG_MTD_CFI_AMDSTD_RETRY
+//**************************
#define MANUFACTURER_AMD 0x0001
#define MANUFACTURER_ATMEL 0x001F
@@ -322,6 +327,13 @@ struct mtd_info *cfi_cmdset_0002(struct
#endif
bootloc = extp->TopBottom;
+//****** Storlink SoC ******
+ if(bootloc == 5)
+ {
+ bootloc = 3;
+ extp->TopBottom = 3;
+ }
+//**************************
if ((bootloc != 2) && (bootloc != 3)) {
printk(KERN_WARNING "%s: CFI does not contain boot "
"bank location. Assuming top.\n", map->name);
@@ -340,6 +352,9 @@ struct mtd_info *cfi_cmdset_0002(struct
cfi->cfiq->EraseRegionInfo[j] = swap;
}
}
+#ifdef CONFIG_MTD_MAP_BANK_WIDTH_1
+ cfi->device_type = CFI_DEVICETYPE_X8;
+#endif
/* Set the default CFI lock/unlock addresses */
cfi->addr_unlock1 = 0x555;
cfi->addr_unlock2 = 0x2aa;
@@ -461,6 +476,7 @@ static int __xipram chip_ready(struct ma
map_word d, t;
d = map_read(map, addr);
+ udelay(20); //Storlink SoC
t = map_read(map, addr);
return map_word_equal(map, d, t);
@@ -626,7 +642,9 @@ static void put_chip(struct map_info *ma
default:
printk(KERN_ERR "MTD: put_chip() called with oldstate %d!!\n", chip->oldstate);
}
+//****** Storlink SoC ******
wake_up(&chip->wq);
+//**************************
}
#ifdef CONFIG_MTD_XIP
@@ -940,7 +958,9 @@ static inline int do_read_secsi_onechip(
cfi_send_gen_cmd(0x90, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x00, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+//****** Storlink SoC ******
wake_up(&chip->wq);
+//**************************
spin_unlock(chip->mutex);
return 0;
@@ -1005,7 +1025,10 @@ static int __xipram do_write_oneword(str
*/
unsigned long uWriteTimeout = ( HZ / 1000 ) + 1;
int ret = 0;
- map_word oldd;
+//****** Storlink SoC ******
+// map_word oldd;
+ map_word oldd, tmp;
+//**************************
int retry_cnt = 0;
adr += chip->start;
@@ -1037,9 +1060,15 @@ static int __xipram do_write_oneword(str
ENABLE_VPP(map);
xip_disable(map, chip, adr);
retry:
+//****** Storlink SoC ******
+#if FORCE_FAST_PROG /* Unlock bypass */
+ cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+#else
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+#endif
+//**************************
map_write(map, datum, adr);
chip->state = FL_WRITING;
@@ -1072,7 +1101,13 @@ static int __xipram do_write_oneword(str
}
if (chip_ready(map, adr))
- break;
+ {
+ tmp = map_read(map, adr);
+ if(map_word_equal(map, tmp, datum))
+// goto op_done;
+ break;
+
+ }
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1);
@@ -1084,8 +1119,17 @@ static int __xipram do_write_oneword(str
/* FIXME - should have reset delay before continuing */
if (++retry_cnt <= MAX_WORD_RETRIES)
+ {
+//****** Storlink SoC ******
+#if FORCE_FAST_PROG
+ cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x20, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
+ //udelay(1);
+#endif
+ udelay(1);
goto retry;
-
+ }
ret = -EIO;
}
xip_enable(map, chip, adr);
@@ -1171,7 +1215,14 @@ static int cfi_amdstd_write_words(struct
return 0;
}
}
-
+//****** Storlink SoC ******
+ map_write( map, CMD(0xF0), chipstart );
+#if FORCE_FAST_PROG
+ cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x20, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
+//**************************
/* We are now aligned, write as much as possible */
while(len >= map_bankwidth(map)) {
map_word datum;
@@ -1181,7 +1232,15 @@ static int cfi_amdstd_write_words(struct
ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, datum);
if (ret)
+ {
+//****** Storlink SoC ******
+#if FORCE_FAST_PROG
+ /* Get out of unlock bypass mode */
+ cfi_send_gen_cmd(0x90, 0, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x00, 0, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
return ret;
+ }
ofs += map_bankwidth(map);
buf += map_bankwidth(map);
@@ -1189,19 +1248,38 @@ static int cfi_amdstd_write_words(struct
len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
+//****** Storlink SoC ******
+#if FORCE_FAST_PROG
+ /* Get out of unlock bypass mode */
+ cfi_send_gen_cmd(0x90, 0, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x00, 0, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
chipstart = cfi->chips[chipnum].start;
+#if FORCE_FAST_PROG
+ /* Go into unlock bypass mode for next set of chips */
+ cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x20, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
}
}
+#if FORCE_FAST_PROG
+ /* Get out of unlock bypass mode */
+ cfi_send_gen_cmd(0x90, 0, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x00, 0, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
+
/* Write the trailing bytes if any */
if (len & (map_bankwidth(map)-1)) {
map_word tmp_buf;
retry1:
+
spin_lock(cfi->chips[chipnum].mutex);
if (cfi->chips[chipnum].state != FL_READY) {
@@ -1221,7 +1299,11 @@ static int cfi_amdstd_write_words(struct
#endif
goto retry1;
}
-
+#if FORCE_FAST_PROG
+ cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x20, cfi->addr_unlock1, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
tmp_buf = map_read(map, ofs + chipstart);
spin_unlock(cfi->chips[chipnum].mutex);
@@ -1231,11 +1313,23 @@ static int cfi_amdstd_write_words(struct
ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, tmp_buf);
if (ret)
+ {
+#if FORCE_FAST_PROG
+ /* Get out of unlock bypass mode */
+ cfi_send_gen_cmd(0x90, 0, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x00, 0, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
return ret;
-
+ }
+#if FORCE_FAST_PROG
+ /* Get out of unlock bypass mode */
+ cfi_send_gen_cmd(0x90, 0, chipstart, map, cfi, cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x00, 0, chipstart, map, cfi, cfi->device_type, NULL);
+#endif
(*retlen) += len;
}
+ map_write( map, CMD(0xF0), chipstart );
return 0;
}
@@ -1275,6 +1369,7 @@ static int __xipram do_write_buffer(stru
ENABLE_VPP(map);
xip_disable(map, chip, cmd_adr);
+ map_write( map, CMD(0xF0), chip->start ); //Storlink
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
//cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
@@ -1535,6 +1630,9 @@ static int __xipram do_erase_oneblock(st
DECLARE_WAITQUEUE(wait, current);
int ret = 0;
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_lock(); // sl2312 share pin lock
+#endif
adr += chip->start;
spin_lock(chip->mutex);
@@ -1613,6 +1711,9 @@ static int __xipram do_erase_oneblock(st
chip->state = FL_READY;
put_chip(map, chip, adr);
spin_unlock(chip->mutex);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return ret;
}
--- /dev/null
+++ b/drivers/mtd/chips/map_serial.c
@@ -0,0 +1,188 @@
+/*
+ * Common code to handle map devices which are simple ROM
+ * (C) 2000 Red Hat. GPL'd.
+ * $Id: map_serial.c,v 1.3 2006/06/05 02:34:54 middle Exp $
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+
+#include <asm/byteorder.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include <asm/hardware.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
+#include <linux/init.h> //add
+#include <asm/arch/sl2312.h>
+#include <asm/arch/flash.h>
+
+static int mapserial_erase(struct mtd_info *mtd, struct erase_info *instr);
+static int mapserial_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+static int mapserial_write (struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+static void mapserial_nop (struct mtd_info *);
+struct mtd_info *map_serial_probe(struct map_info *map);
+
+extern int m25p80_sector_erase(__u32 address, __u32 schip_en);
+
+static struct mtd_chip_driver mapserial_chipdrv = {
+ probe: map_serial_probe,
+ name: "map_serial",
+ module: THIS_MODULE
+};
+
+struct mtd_info *map_serial_probe(struct map_info *map)
+{
+ struct mtd_info *mtd;
+
+ mtd = kmalloc(sizeof(*mtd), GFP_KERNEL);
+ if (!mtd)
+ return NULL;
+
+ memset(mtd, 0, sizeof(*mtd));
+
+ map->fldrv = &mapserial_chipdrv;
+ mtd->priv = map;
+ mtd->name = map->name;
+ mtd->type = MTD_OTHER;
+ mtd->erase = mapserial_erase;
+ mtd->size = map->size;
+ mtd->read = mapserial_read;
+ mtd->write = mapserial_write;
+ mtd->sync = mapserial_nop;
+ mtd->flags = (MTD_WRITEABLE|MTD_ERASEABLE);
+// mtd->erasesize = 512; // page size;
+#ifdef CONFIG_MTD_SL2312_SERIAL_ST
+ mtd->erasesize = M25P80_SECTOR_SIZE; // block size;
+#else
+ mtd->erasesize = 0x1000; // block size;
+#endif
+
+ __module_get(THIS_MODULE);
+ //MOD_INC_USE_COUNT;
+ return mtd;
+}
+
+#define FLASH_ACCESS_OFFSET 0x00000010
+#define FLASH_ADDRESS_OFFSET 0x00000014
+#define FLASH_WRITE_DATA_OFFSET 0x00000018
+#define FLASH_READ_DATA_OFFSET 0x00000018
+
+static __u32 readflash_ctrl_reg(__u32 ofs)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ return __raw_readl(base);
+}
+
+static void writeflash_ctrl_reg(__u32 data, __u32 ofs)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ __raw_writel(data, base);
+}
+
+static int mapserial_erase_block(struct map_info *map,unsigned int block)
+{
+
+ __u32 address;
+#ifdef CONFIG_MTD_SL2312_SERIAL_ST
+
+ if(!m25p80_sector_erase(block, 0))
+ return (MTD_ERASE_DONE);
+#else
+ __u32 opcode;
+ __u32 count=0;
+// __u8 status;
+
+ // printk("mapserial_erase_block : erase block %d \n",block);
+// opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | cmd;
+ opcode = 0x80000000 | 0x0200 | 0x50;
+ address = (block << 13);
+ writeflash_ctrl_reg(address,FLASH_ADDRESS_OFFSET);
+ writeflash_ctrl_reg(opcode,FLASH_ACCESS_OFFSET);
+ opcode=readflash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode = readflash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ count++;
+ if (count > 10000)
+ {
+ return (MTD_ERASE_FAILED);
+ }
+ }
+ return (MTD_ERASE_DONE);
+#endif
+}
+
+static int mapserial_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+ struct map_info *map = (struct map_info *)mtd->priv;
+ unsigned int addr;
+ int len;
+ unsigned int block;
+ unsigned int ret=0;
+
+ addr = instr->addr;
+ len = instr->len;
+ while (len > 0)
+ {
+ block = addr / mtd->erasesize;
+#ifdef CONFIG_MTD_SL2312_SERIAL_ST
+ ret = mapserial_erase_block(map,addr);
+#else
+ ret = mapserial_erase_block(map,block);
+#endif
+ addr = addr + mtd->erasesize;
+ len = len - mtd->erasesize;
+ }
+ return (ret);
+}
+
+static int mapserial_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
+{
+ struct map_info *map = (struct map_info *)mtd->priv;
+// printk("mapserial_read : \n");
+ map->copy_from(map, buf, from, len);
+ *retlen = len;
+ return 0;
+}
+
+static void mapserial_nop(struct mtd_info *mtd)
+{
+ /* Nothing to see here */
+}
+
+static int mapserial_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
+{
+ struct map_info *map = (struct map_info *)mtd->priv;
+// printk("mapserial_write : buf %x to %x len %x \n",(int)buf, (int)to, (int)len);
+ //map->copy_to(map, buf, to, len);
+ map->copy_to(map, to, buf, len);
+ *retlen = len;
+ return 0;
+}
+
+int __init map_serial_init(void)
+{
+ register_mtd_chip_driver(&mapserial_chipdrv);
+ return 0;
+}
+
+static void __exit map_serial_exit(void)
+{
+ unregister_mtd_chip_driver(&mapserial_chipdrv);
+}
+
+module_init(map_serial_init);
+module_exit(map_serial_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("MTD chip driver for ROM chips");
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -614,5 +614,30 @@ config MTD_PLATRAM
This selection automatically selects the map_ram driver.
+#***************************************************************************************
+# Storlink parallel/Serial Flash configuration
+#***************************************************************************************
+config MTD_SL2312_CFI
+ tristate "CFI Flash device mapped on SL2312"
+ depends on MTD_CFI
+ help
+ Map driver for SL2312 demo board.
+
+config MTD_SL2312_SERIAL_ATMEL
+ tristate "ATMEL Serial Flash device mapped on SL2312"
+ depends on MTD_PARTITIONS && ARCH_SL2312
+ help
+ Map driver for SL2312 demo board.
+
+config MTD_SL2312_SERIAL_ST
+ tristate "ST Serial Flash device mapped on SL2312"
+ depends on MTD_PARTITIONS && ARCH_SL2312
+ help
+ Map driver for SL2312 demo board.
+
+config SL2312_SHARE_PIN
+ tristate "Parallel Flash share pin on SL2312 ASIC"
+ depends on SL3516_ASIC
+
endmenu
--- /dev/null
+++ b/drivers/mtd/maps/sl2312-flash-atmel.c
@@ -0,0 +1,554 @@
+/*
+ * $Id: sl2312-flash-atmel.c,v 1.2 2006/06/05 02:35:57 middle Exp $
+ *
+ * Flash and EPROM on Hitachi Solution Engine and similar boards.
+ *
+ * (C) 2001 Red Hat, Inc.
+ *
+ * GPL'd
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <asm/hardware.h>
+
+#include <asm/arch/sl2312.h>
+#include <asm/arch/flash.h>
+#include <linux/init.h> //add
+
+
+#define g_page_addr AT45DB321_PAGE_SHIFT //321 : shift 10 ; 642 : shift 11
+#define g_chipen SERIAL_FLASH_CHIP0_EN //atmel
+
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
+
+void address_to_page(__u32 address, __u16 *page, __u16 *offset)
+{
+ *page = address / SPAGE_SIZE;
+ *offset = address % SPAGE_SIZE;
+}
+
+static __u32 read_flash_ctrl_reg(__u32 ofs)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ return __raw_readl(base);
+}
+
+static void write_flash_ctrl_reg(__u32 ofs,__u32 data)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ __raw_writel(data, base);
+}
+
+void atmel_read_status(__u8 cmd, __u8 *data)
+{
+ __u32 opcode;
+ __u32 value;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | cmd | g_chipen;
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+
+ value=read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ *data = value & 0xff;
+}
+
+void main_memory_page_read(__u8 cmd, __u16 page, __u16 offset, __u8 *data)
+{
+ __u32 opcode;
+ __u32 address;
+ __u32 value;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS_4X_DATA | cmd | g_chipen;
+ address = (page << g_page_addr) + offset;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+
+ value=read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ *data = value & 0xff;
+}
+
+void buffer_to_main_memory(__u8 cmd, __u16 page)
+{
+ __u32 opcode;
+ __u32 address;
+ __u8 status;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | cmd | g_chipen;
+ address = (page << g_page_addr);
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ atmel_read_status(READ_STATUS_SPI, &status);
+ while(!(status&0x80))
+ {
+ atmel_read_status(READ_STATUS_SPI, &status);
+ flash_delay();
+ schedule();
+ }
+
+}
+
+
+void atmel_flash_read_page(__u32 address, __u8 *buffer, __u32 len)
+{
+ __u8 byte;
+ __u16 page, offset;
+ __u16 i;
+
+ address_to_page(address, &page, &offset);
+
+ for(i=0; i<len; i++,offset++)
+ {
+ main_memory_page_read(MAIN_MEMORY_PAGE_READ_SPI , page, offset, &byte);
+ buffer [i]= byte;
+ }
+}
+
+void atmel_flash_program_page(__u32 address, __u8 *buffer, __u32 len)
+{
+ __u8 pattern;
+ __u16 page, offset;
+ __u32 i;
+
+ address_to_page(address, &page, &offset);
+ // printk("atmel_flash_program_page: offset %x len %x page %x \n", offset, len, page);
+
+ if(offset)
+ main_memory_to_buffer(MAIN_MEMORY_TO_BUFFER1,page);
+
+ for(i=0; i<len; i++,offset++)
+ {
+ pattern = buffer[i];
+ atmel_buffer_write(BUFFER1_WRITE,offset,pattern);
+ }
+
+ // printk("atmel_flash_program_page: offset %x \n", offset);
+ buffer_to_main_memory(BUFFER1_TO_MAIN_MEMORY, page);
+ // printk("atmel_flash_program_page: buffer_to_main_memory %x page\n", page);
+
+}
+
+
+void main_memory_to_buffer(__u8 cmd, __u16 page)
+{
+ __u32 opcode;
+ __u32 address;
+ __u8 status;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | cmd | g_chipen;
+ address = (page << g_page_addr);
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ atmel_read_status(READ_STATUS_SPI, &status);
+ while(!(status&0x80))
+ {
+ atmel_read_status(READ_STATUS_SPI, &status);
+ flash_delay();
+ schedule();
+ }
+
+}
+
+void main_memory_page_program(__u8 cmd, __u16 page, __u16 offset, __u8 data)
+{
+ __u32 opcode;
+ __u32 address;
+ __u8 status;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS_DATA | cmd | g_chipen;
+ address = (page << g_page_addr) + offset;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_WRITE_DATA_OFFSET, data);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ atmel_read_status(READ_STATUS_SPI, &status);
+ while(!(status&0x80))
+ {
+ atmel_read_status(READ_STATUS_SPI, &status);
+ flash_delay();
+ schedule();
+ }
+}
+
+void atmel_buffer_write(__u8 cmd, __u16 offset, __u8 data)
+{
+ __u32 opcode;
+ __u32 address;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS_DATA | cmd | g_chipen;
+ address = offset;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_WRITE_DATA_OFFSET, data);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+
+}
+
+void atmel_erase_page(__u8 cmd, __u16 page)
+{
+ __u32 opcode;
+ __u32 address;
+ __u8 status;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | cmd | g_chipen;
+ address = (page << g_page_addr);
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ atmel_read_status(READ_STATUS_SPI, &status);
+ while(!(status&0x80))
+ {
+ atmel_read_status(READ_STATUS_SPI, &status);
+ flash_delay();
+ schedule();
+ }
+
+}
+
+void atmel_erase_block(__u8 cmd, __u16 block)
+{
+ __u32 opcode;
+ __u32 address;
+ __u8 status;
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | cmd | g_chipen;
+ address = (block << 13);
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(opcode&0x80000000)
+ {
+ opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ atmel_read_status(READ_STATUS_SPI, &status);
+ while(!(status&0x80))
+ {
+ atmel_read_status(READ_STATUS_SPI, &status);
+ flash_delay();
+ schedule();
+ }
+
+}
+
+void flash_delay(void)
+{
+ int i;
+
+ for(i=0; i<50; i++)
+ i=i;
+}
+
+
+
+
+__u32 sl2312_read32(struct map_info *map, unsigned long ofs)
+{
+
+#if 0
+ __u16 page, offset;
+ __u32 pattern;
+ __u8 byte, i;
+
+ pattern = 0;
+ address_to_page(ofs, &page, &offset);
+ for(i=0; i<4; i++, offset++)
+ {
+ pattern = pattern << 8;
+ main_memory_page_read(MAIN_MEMORY_PAGE_READ_SPI , page, offset, &byte);
+//printk("sl2312_read32:: address = %08x data = %c \n",ofs,byte);
+ pattern += byte;
+ }
+ return pattern;
+#else
+ return read_flash_ctrl_reg(ofs);
+#endif
+
+}
+
+__u8 sl2312_read8(struct map_info *map, unsigned long ofs)
+{
+ __u16 page, offset;
+ __u8 byte;
+
+ address_to_page(ofs, &page, &offset);
+ main_memory_page_read(MAIN_MEMORY_PAGE_READ_SPI , page, offset, &byte);
+ //printk("sl2312_read8:: address = %08x data = %c \n",ofs,byte);
+ return byte;
+
+}
+
+void sl2312_write32(struct map_info *map, __u32 d, unsigned long ofs)
+{
+#if 0
+ __u16 page, offset;
+ __u8 byte, i;
+
+ address_to_page(ofs, &page, &offset);
+ for(i=0; i<4; i++, offset++)
+ {
+ byte = d & 0xff;
+ main_memory_page_program(MAIN_MEMORY_PROGRAM_BUFFER1, page, offset, byte);
+ d = d >> 8;
+//printk("sl2312_write32:: address = %08x data = %c \n",ofs,byte);
+ }
+#else
+ write_flash_ctrl_reg(ofs, d);
+#endif
+}
+
+void sl2312_write8(struct map_info *map, __u8 d, unsigned long ofs)
+{
+ __u16 page, offset;
+
+ address_to_page(ofs, &page, &offset);
+ main_memory_page_program(MAIN_MEMORY_PROGRAM_BUFFER1, page, offset, d);
+//printk("sl2312_write8:: address = %08x data = %c \n",ofs,d);
+
+}
+
+void sl2312_copy_from(struct map_info *map, void *buf, unsigned long ofs, ssize_t len)
+{
+ __u32 size;
+ __u8 *buffer;
+ __u32 length;//i, j,
+
+ //printk("sl2312_copy_from:: address = %08x datalen = %d \n",ofs,len);
+
+ length = len;
+ buffer = (__u8 *)buf;
+ while(len)
+ {
+ size = SPAGE_SIZE - (ofs%SPAGE_SIZE);
+ if(size > len)
+ size = len;
+ atmel_flash_read_page(ofs, buffer, size);
+ buffer+=size;
+ ofs+=size;
+ len -= size;
+ }
+
+#if 0
+ buffer = (__u8 *)buf;
+ for(i=0; i<length; i+=16)
+ {
+ for(j=0; j<16; j++,buffer++)
+ {
+ if((i*16+j)<length)
+ printk("%x ",(int)*buffer);
+ }
+ printk("\n");
+ }
+
+ printk("\n");
+#endif
+
+}
+
+
+void sl2312_copy_to(struct map_info *map, unsigned long ofs, void *buf, ssize_t len)
+{
+ __u32 size;
+ __u8 *buffer;
+
+ buffer = (__u8 *)buf;
+ //printk("sl2312_copy_to:offset %x len %x \n", ofs, len);
+// printk("sl2312_copy_to:buf is %x \n", (int)buf);
+
+ while(len)
+ {
+ size = SPAGE_SIZE - (ofs%SPAGE_SIZE);
+ if(size > len)
+ size = len;
+ atmel_flash_program_page(ofs, buffer, size);
+ buffer+=size;
+ ofs+=size;
+ len-=size;
+ }
+
+
+}
+
+
+static struct mtd_info *serial_mtd;
+
+static struct mtd_partition *parsed_parts;
+
+static struct map_info sl2312_serial_map = {
+// name: "SL2312 serial flash",
+// size: 4194304, //0x400000,
+// //buswidth: 4,
+// bankwidth: 4,
+// phys: SL2312_FLASH_BASE,
+//#ifdef CONFIG_MTD_COMPLEX_MAPPINGS
+// //read32: sl2312_read32,
+// //read8: sl2312_read8,
+// copy_from: sl2312_copy_from,
+// //write8: sl2312_write8,
+// //write32: sl2312_write32,
+// read: sl2312_read32,
+// write: sl2312_write32,
+// copy_to: sl2312_copy_to
+//#endif
+ .name = "SL2312 serial flash",
+ .size = 4194304, //0x400000,
+ //buswidth: 4,
+ .bankwidth = 4,
+ .phys = SL2312_FLASH_BASE,
+#ifdef CONFIG_MTD_COMPLEX_MAPPINGS
+ //read32: sl2312_read32,
+ //read8: sl2312_read8,
+ .copy_from = sl2312_copy_from,
+ //write8: sl2312_write8,
+ //write32: sl2312_write32,
+ .read = sl2312_read32,
+ .write = sl2312_write32,
+ .copy_to = sl2312_copy_to
+#endif
+};
+
+
+
+static struct mtd_partition sl2312_partitions[] = {
+
+
+ ///* boot code */
+ //{ name: "bootloader", offset: 0x00000000, size: 0x20000, },
+ ///* kernel image */
+ //{ name: "kerel image", offset: 0x000020000, size: 0x2E0000 },
+ ///* All else is writable (e.g. JFFS) */
+ //{ name: "user data", offset: 0x00300000, size: 0x00100000, },
+ /* boot code */
+ { .name = "bootloader", .offset = 0x00000000, .size = 0x20000, },
+ /* kernel image */
+ { .name = "kerel image", .offset = 0x000020000, .size = 0xE0000 },
+ /* All else is writable (e.g. JFFS) */
+ { .name = "user data", .offset = 0x00100000, .size = 0x00300000, },
+
+
+};
+
+
+
+static int __init init_sl2312_maps(void)
+{
+ int nr_parts = 0;
+ struct mtd_partition *parts;
+
+ serial_mtd = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
+ if (!serial_mtd)
+ return NULL;
+
+ memset(serial_mtd, 0, sizeof(struct mtd_info));
+ //sl2312flash_map.virt = (unsigned long)ioremap(SL2312_FLASH_BASE, FLASH_SIZE);
+ //sl2312_serial_map.map_priv_1 = (unsigned long)ioremap(SL2312_FLASH_BASE, SFLASH_SIZE);//(unsigned long)FLASH_VBASE;
+ sl2312_serial_map.virt = (unsigned long)ioremap(SL2312_FLASH_BASE, SFLASH_SIZE);//(unsigned long)ioremap(FLASH_START, SFLASH_SIZE);
+ if (!sl2312_serial_map.virt) {
+ printk(" failed to ioremap \n");
+ return -EIO;
+ }
+ serial_mtd = do_map_probe("map_serial", &sl2312_serial_map);
+ if (serial_mtd) {
+ //serial_mtd->module = THIS_MODULE;
+ serial_mtd->owner = THIS_MODULE;
+
+ }
+
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+ nr_parts = parse_redboot_partitions(serial_mtd, &parsed_parts);
+ if (nr_parts > 0)
+ printk(KERN_NOTICE "Found RedBoot partition table.\n");
+ else if (nr_parts < 0)
+ printk(KERN_NOTICE "Error looking for RedBoot partitions.\n");
+#else
+ parsed_parts = sl2312_partitions;
+ parts = sl2312_partitions;
+ nr_parts = sizeof(sl2312_partitions)/sizeof(*parts);
+ nr_parts = sizeof(sl2312_partitions)/sizeof(*parsed_parts);
+#endif /* CONFIG_MTD_REDBOOT_PARTS */
+
+ if (nr_parts > 0)
+ add_mtd_partitions(serial_mtd, parsed_parts, nr_parts);
+ else
+ add_mtd_device(serial_mtd);
+
+ return 0;
+}
+
+static void __exit cleanup_sl2312_maps(void)
+{
+ if (parsed_parts)
+ del_mtd_partitions(serial_mtd);
+ else
+ del_mtd_device(serial_mtd);
+
+ map_destroy(serial_mtd);
+
+
+}
+
+module_init(init_sl2312_maps);
+module_exit(cleanup_sl2312_maps);
+
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Plus Chen <plus@storlink.com.tw>");
+MODULE_DESCRIPTION("MTD map driver for Storlink Sword boards");
+
--- /dev/null
+++ b/drivers/mtd/maps/sl2312-flash-cfi.c
@@ -0,0 +1,370 @@
+/*======================================================================
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+======================================================================*/
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/arch/sl2312.h>
+#include <linux/mtd/kvctl.h>
+#include "sl2312_flashmap.h"
+
+
+//extern int parse_afs_partitions(struct mtd_info *, struct mtd_partition **);
+
+/* the base address of FLASH control register */
+#define FLASH_CONTROL_BASE_ADDR (IO_ADDRESS(SL2312_FLASH_CTRL_BASE))
+#define SL2312_GLOBAL_BASE_ADDR (IO_ADDRESS(SL2312_GLOBAL_BASE))
+
+/* define read/write register utility */
+#define FLASH_READ_REG(offset) (__raw_readl(offset+FLASH_CONTROL_BASE_ADDR))
+#define FLASH_WRITE_REG(offset,val) (__raw_writel(val,offset+FLASH_CONTROL_BASE_ADDR))
+
+/* the offset of FLASH control register */
+enum EMAC_REGISTER {
+ FLASH_ID = 0x0000,
+ FLASH_STATUS = 0x0008,
+ FLASH_TYPE = 0x000c,
+ FLASH_ACCESS = 0x0020,
+ FLASH_ADDRESS = 0x0024,
+ FLASH_DATA = 0x0028,
+ FLASH_TIMING = 0x002c,
+};
+
+//#define FLASH_BASE FLASH_CONTROL_BASE_ADDR
+//#define FLASH_SIZE 0x00800000 //INTEGRATOR_FLASH_SIZE
+
+//#define FLASH_PART_SIZE 8388608
+
+static unsigned int flash_indirect_access = 0;
+
+#ifdef CONFIG_SL2312_SHARE_PIN
+static unsigned int chip_en = 0x00000000;
+
+void sl2312flash_enable_parallel_flash(void)
+{
+ unsigned int reg_val;
+
+ reg_val = readl(SL2312_GLOBAL_BASE_ADDR + 0x30);
+ reg_val = reg_val & 0xfffffffd;
+ writel(reg_val,SL2312_GLOBAL_BASE_ADDR + 0x30);
+ return;
+}
+
+void sl2312flash_disable_parallel_flash(void)
+{
+ unsigned int reg_val;
+
+ reg_val = readl(SL2312_GLOBAL_BASE_ADDR + 0x30);
+ reg_val = reg_val | 0x00000002;
+ writel(reg_val,SL2312_GLOBAL_BASE_ADDR + 0x30);
+ return;
+}
+#endif
+
+
+static struct map_info sl2312flash_map =
+{
+ name: "SL2312 CFI Flash",
+ size: FLASH_SIZE,
+ bankwidth: 2,
+ //bankwidth: 1, //for 8 bits width
+ phys: SL2312_FLASH_BASE,
+};
+
+static struct mtd_info *mtd;
+#if 0
+static struct mtd_partition sl2312_partitions[] = {
+ /* boot code */
+ {
+ name: "bootloader",
+ offset: 0x00000000,
+ size: 0x20000,
+// mask_flags: MTD_WRITEABLE,
+ },
+ /* kernel image */
+ {
+ name: "kerel image",
+ offset: 0x00020000,
+ size: 0x2E0000
+ },
+ /* All else is writable (e.g. JFFS) */
+ {
+ name: "user data",
+ offset: 0x00300000,
+ size: 0x00100000,
+ }
+};
+#endif
+
+
+
+static int __init sl2312flash_init(void)
+{
+ struct mtd_partition *parts;
+ int nr_parts = 0;
+ int ret;
+#ifndef CONFIG_SL2312_SHARE_PIN
+ unsigned int reg_val;
+#endif
+
+ printk("SL2312 MTD Driver Init.......\n");
+
+#ifndef CONFIG_SL2312_SHARE_PIN
+ /* enable flash */
+ reg_val = readl(SL2312_GLOBAL_BASE_ADDR + 0x30);
+ reg_val = reg_val & 0xfffffffd;
+ writel(reg_val,SL2312_GLOBAL_BASE_ADDR + 0x30);
+#else
+ sl2312flash_enable_parallel_flash(); /* enable Parallel FLASH */
+#endif
+ FLASH_WRITE_REG(FLASH_ACCESS,0x00004000); /* parallel flash direct access mode */
+ ret = FLASH_READ_REG(FLASH_ACCESS);
+ if (ret == 0x00004000)
+ {
+ flash_indirect_access = 0; /* parallel flash direct access */
+ }
+ else
+ {
+ flash_indirect_access = 1; /* parallel flash indirect access */
+ }
+
+ /*
+ * Also, the CFI layer automatically works out what size
+ * of chips we have, and does the necessary identification
+ * for us automatically.
+ */
+#ifdef CONFIG_GEMINI_IPI
+ sl2312flash_map.virt = FLASH_VBASE;//(unsigned int *)ioremap(SL2312_FLASH_BASE, FLASH_SIZE);
+#else
+ sl2312flash_map.virt = (unsigned int *)ioremap(SL2312_FLASH_BASE, FLASH_SIZE);
+#endif
+ //printk("sl2312flash_map.virt = %08x\n",(unsigned int)sl2312flash_map.virt);
+
+// simple_map_init(&sl2312flash_map);
+
+ mtd = do_map_probe("cfi_probe", &sl2312flash_map);
+ if (!mtd)
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash(); /* disable Parallel FLASH */
+#endif
+ return -ENXIO;
+ }
+ mtd->owner = THIS_MODULE;
+// mtd->erase = flash_erase;
+// mtd->read = flash_read;
+// mtd->write = flash_write;
+
+ parts = sl2312_partitions;
+ nr_parts = sizeof(sl2312_partitions)/sizeof(*parts);
+ ret = add_mtd_partitions(mtd, parts, nr_parts);
+ /*If we got an error, free all resources.*/
+ if (ret < 0) {
+ del_mtd_partitions(mtd);
+ map_destroy(mtd);
+ }
+#ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash(); /* disable Parallel FLASH */
+#endif
+ printk("SL2312 MTD Driver Init Success ......\n");
+ return ret;
+}
+
+static void __exit sl2312flash_exit(void)
+{
+ if (mtd) {
+ del_mtd_partitions(mtd);
+ map_destroy(mtd);
+ }
+
+ if (sl2312flash_map.virt) {
+ iounmap((void *)sl2312flash_map.virt);
+ sl2312flash_map.virt = 0;
+ }
+}
+
+char chrtohex(char c)
+{
+ char val;
+ if ((c >= '0') && (c <= '9'))
+ {
+ val = c - '0';
+ return val;
+ }
+ else if ((c >= 'a') && (c <= 'f'))
+ {
+ val = 10 + (c - 'a');
+ return val;
+ }
+ else if ((c >= 'A') && (c <= 'F'))
+ {
+ val = 10 + (c - 'A');
+ return val;
+ }
+ printk("<1>Error number\n");
+ return 0;
+}
+
+
+int get_vlaninfo(vlaninfo* vlan)
+{
+ vctl_mheader head;
+ vctl_entry entry;
+ struct mtd_info *mymtd=NULL;
+ int i, j, loc = 0;
+ char *payload=0, *tmp1, *tmp2, tmp3[9];
+ size_t retlen;
+
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_enable_parallel_flash();
+ #endif
+ for(i=0;i<MAX_MTD_DEVICES;i++)
+ {
+ mymtd=get_mtd_device(NULL,i);
+ // printk("mymtd->name: %s\n", mymtd->name);
+ if(mymtd && !strcmp(mymtd->name,"VCTL"))
+ {
+ // printk("%s\n", mymtd->name);
+ break;
+ }
+ }
+ if( i >= MAX_MTD_DEVICES)
+ {
+ printk("Can't find version control\n");
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ return 0;
+ }
+
+ if (!mymtd | !mymtd->read)
+ {
+ printk("<1>Can't read Version Configuration\n");
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ return 0;
+ }
+
+ mymtd->read(mymtd, 0, VCTL_HEAD_SIZE, &retlen, (u_char*)&head);
+ // printk("entry header: %c%c%c%c\n", head.header[0], head.header[1], head.header[2], head.header[3]);
+ // printk("entry number: %x\n", head.entry_num);
+ if ( strncmp(head.header, "FLFM", 4) )
+ {
+ printk("VCTL is a erase block\n");
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ return 0;
+ }
+ loc += retlen;
+ for (i = 0; i < head.entry_num; i++)
+ {
+ mymtd->read(mymtd, loc, VCTL_ENTRY_LEN, &retlen, (u_char*)&entry);
+ // printk("type: %x\n", entry.type);
+ // printk("size: %x\n", entry.size);
+ strncpy(tmp3, entry.header, 4);
+ if (entry.type == VCT_VLAN)
+ {
+ for (j = 0; j < 6 ; j++)
+ {
+ vlan[0].mac[j] = 0;
+ vlan[1].mac[j] = 0;
+ }
+ vlan[0].vlanid = 1;
+ vlan[1].vlanid = 2;
+ vlan[0].vlanmap = 0x7F;
+ vlan[1].vlanmap = 0x80;
+
+ payload = (char *)kmalloc(entry.size - VCTL_ENTRY_LEN, GFP_KERNEL);
+ loc += VCTL_ENTRY_LEN;
+ mymtd->read(mymtd, loc, entry.size - VCTL_ENTRY_LEN, &retlen, payload);
+ // printk("%s\n", payload);
+ tmp1 = strstr(payload, "MAC1:");
+ tmp2 = strstr(payload, "MAC2:");
+ if(!tmp1||!tmp2){
+ kfree(payload);
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ printk("Error VCTL format!!\n");
+ return 0;
+ }
+ tmp1 += 7;
+ tmp2 += 7;
+
+
+ for (j = 0; j < 6; j++)
+ {
+ vlan[0].mac[j] = chrtohex(tmp1[2*j])*16 + chrtohex(tmp1[(2*j)+1]);
+ vlan[1].mac[j] = chrtohex(tmp2[2*j])*16 + chrtohex(tmp2[(2*j)+1]);
+ }
+ tmp1 = strstr(payload, "ID1:");
+ tmp2 = strstr(payload, "ID2:");
+ tmp1 += 4;
+ tmp2 += 4;
+ vlan[0].vlanid = tmp1[0] - '0';
+ vlan[1].vlanid = tmp2[0] - '0';
+ tmp1 = strstr(payload, "MAP1:");
+ tmp2 = strstr(payload, "MAP2:");
+ tmp1 += 7;
+ tmp2 += 7;
+ vlan[0].vlanmap = chrtohex(tmp1[0]) * 16 + chrtohex(tmp1[1]);
+ vlan[1].vlanmap = chrtohex(tmp2[0]) * 16 + chrtohex(tmp2[1]);
+ // printk("Vlan1 id:%x map:%02x mac:%x%x%x%x%x%x\n", vlan[0].vlanid, vlan[0].vlanmap, vlan[0].mac[0], vlan[0].mac[1], vlan[0].mac[2], vlan[0].mac[3], vlan[0].mac[4], vlan[0].mac[5]);
+ // printk("Vlan2 id:%x map:%02x mac:%x%x%x%x%x%x\n", vlan[1].vlanid, vlan[1].vlanmap, vlan[1].mac[0], vlan[1].mac[1], vlan[1].mac[2], vlan[1].mac[3], vlan[1].mac[4], vlan[1].mac[5]);
+ break;
+ }
+ loc += entry.size;
+ }
+ if ( entry.type == VCT_VLAN )
+ {
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ kfree(payload);
+ return 1;
+ }
+ if (i >= head.entry_num)
+ printk("Can't find vlan information\n");
+ #ifdef CONFIG_SL2312_SHARE_PIN
+ sl2312flash_disable_parallel_flash();
+ #endif
+ return 0;
+}
+
+EXPORT_SYMBOL(get_vlaninfo);
+
+
+module_init(sl2312flash_init);
+module_exit(sl2312flash_exit);
+
+MODULE_AUTHOR("Storlink Ltd");
+MODULE_DESCRIPTION("CFI map driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/drivers/mtd/maps/sl2312-flash-m25p80.c
@@ -0,0 +1,498 @@
+/*
+ * $Id: sl2312-flash-m25p80.c,v 1.2 2006/06/02 08:46:02 middle Exp $
+ *
+ * Flash and EPROM on Hitachi Solution Engine and similar boards.
+ *
+ * (C) 2001 Red Hat, Inc.
+ *
+ * GPL'd
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <asm/hardware.h>
+
+#include <asm/arch/sl2312.h>
+#include <asm/arch/flash.h>
+#include <linux/init.h> //add
+#define g_chipen SERIAL_FLASH_CHIP0_EN //ST
+
+//static int m25p80_page_program(__u32 address, __u8 data, __u32 schip_en);
+static void m25p80_write_cmd(__u8 cmd, __u32 schip_en);
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
+
+
+static __u32 read_flash_ctrl_reg(__u32 ofs)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ return __raw_readl(base);
+}
+
+static void write_flash_ctrl_reg(__u32 ofs,__u32 data)
+{
+ __u32 *base;
+
+ base = (__u32 *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE + ofs));
+ __raw_writel(data, base);
+}
+
+static void m25p80_read(__u32 address, __u8 *data, __u32 schip_en)
+{
+ __u32 opcode,status;
+ __u32 value;
+
+ //opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | M25P80_READ;
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS_DATA | M25P80_READ;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+
+ opcode|=g_chipen;
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ status=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(status&0x80000000)
+ {
+ status=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+
+ value=read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ *data = value & 0xff;
+}
+
+static int m25p80_page_program(__u32 address, __u8 *data, __u32 schip_en)
+{
+ __u32 opcode;
+ __u32 status;
+ __u32 tmp;
+ int res = FLASH_ERR_OK;
+ //volatile FLASH_DATA_T* data_ptr = (volatile FLASH_DATA_T*) data;
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | M25P80_READ_STATUS;
+
+ opcode|=g_chipen;
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ //middle delay_ms(130);
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ if((status&0x02)==0x02)
+ {
+ //middle delay_ms(100);
+ m25p80_write_cmd(M25P80_WRITE_DISABLE, schip_en);
+ }
+
+
+ m25p80_write_cmd(M25P80_WRITE_ENABLE, schip_en);
+ ////middle delay_ms(10);
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS_DATA | M25P80_PAGE_PROGRAM;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ write_flash_ctrl_reg(FLASH_WRITE_DATA_OFFSET, *data);
+
+ //status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //while(status!=data)
+ //{
+ // status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ // //middle delay_ms(10);
+ //}
+
+ opcode|=g_chipen;
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ //opcode=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | M25P80_READ_STATUS;
+
+ opcode|=g_chipen;
+
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //while(status&0xfd)
+ while(status&0x01)
+ {
+ //if((status&0x9c)!=0)
+ // printf(" m25p80_page_program Protect Status = %x\n",status);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ flash_delay();
+ schedule();
+ //middle delay_ms(50);
+ }
+ //printf("status = %x, data = %x\n",status,data);
+ if((status&0x02)==0x02)
+ {
+ //middle delay_ms(100);
+ m25p80_write_cmd(M25P80_WRITE_DISABLE, schip_en);
+ }
+ //};//while (len > 0)
+ return res;
+}
+
+void m25p80_copy_from(struct map_info *map, void *buf, unsigned long ofs, ssize_t len)
+{
+// __u32 size;
+ __u8 *buffer;
+ __u32 length;//i, j,
+
+ length = len;
+ buffer = (__u8 *)buf;
+ while(len)
+ {
+ m25p80_read(ofs, buffer, g_chipen);
+ buffer++;
+ ofs++;
+ len --;
+ } ;
+
+}
+
+__u32 m25p80_read32(struct map_info *map, unsigned long ofs)
+{
+
+ return read_flash_ctrl_reg(ofs);
+
+
+}
+
+void m25p80_write32(struct map_info *map, __u32 d, unsigned long ofs)
+{
+
+ write_flash_ctrl_reg(ofs, d);
+
+}
+
+void m25p80_copy_to(struct map_info *map, unsigned long ofs, void *buf, ssize_t len)
+{
+ __u32 size, i, ret;
+
+ while(len > 0)
+ {
+ if(len >= M25P80_PAGE_SIZE)
+ size = M25P80_PAGE_SIZE;
+ else
+ size = len;
+
+ for(i=0;i<size;i++)
+ {
+ ret = m25p80_page_program( (ofs+i), (buf+i), g_chipen);
+ }
+ buf+=M25P80_PAGE_SIZE;
+ ofs+=M25P80_PAGE_SIZE;
+ len-=M25P80_PAGE_SIZE;
+
+ };
+
+
+}
+
+static struct mtd_info *serial_mtd;
+
+static struct mtd_partition *parsed_parts;
+
+static struct map_info m25p80_map = {
+
+ .name = "SL2312 serial flash m25p80",
+ .size = 1048576, //0x100000,
+ //buswidth: 4,
+ .bankwidth = 4,
+ .phys = SL2312_FLASH_BASE,
+#ifdef CONFIG_MTD_COMPLEX_MAPPINGS
+ .copy_from = m25p80_copy_from,
+ .read = m25p80_read32,
+ .write = m25p80_write32,
+ .copy_to = m25p80_copy_to
+#endif
+};
+
+
+
+static struct mtd_partition m25p80_partitions[] = {
+
+ /* boot code */
+ { .name = "bootloader", .offset = 0x00000000, .size = 0x20000, },
+ /* kernel image */
+ { .name = "kerel image", .offset = 0x000020000, .size = 0xC0000 },
+ /* All else is writable (e.g. JFFS) */
+ { .name = "user data", .offset = 0x000E0000, .size = 0x00010000, },
+
+
+};
+
+void flash_delay()
+{
+ int i,j;
+ for(i=0;i<0x100;i++)
+ j=i*3+5;
+}
+
+int m25p80_sector_erase(__u32 address, __u32 schip_en)
+{
+ __u32 opcode;
+ __u32 status;
+ __u32 tmp;
+ int res = FLASH_ERR_OK;
+ //printf("\n-->m25p80_sector_erase");
+ if(address >= FLASH_START)
+ address-=FLASH_START;
+
+ m25p80_write_cmd(M25P80_WRITE_ENABLE, schip_en);
+ //printf("\n m25p80_sector_erase : after we-en");
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_SHIFT_ADDRESS | M25P80_SECTOR_ERASE;
+ write_flash_ctrl_reg(FLASH_ADDRESS_OFFSET, address);
+ #ifdef MIDWAY_DIAG
+ opcode|=schip_en;
+ #endif
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | M25P80_READ_STATUS;
+ #ifdef MIDWAY_DIAG
+ opcode|=schip_en;
+ #endif
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //while(status&0xfd)
+ while(status&0x01)
+ {
+ //if((status&0x9c)!=0)
+ // printf(" m25p80_sector_erase Protect Status = %x\n",status);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ flash_delay();
+ schedule();
+ //middle delay_ms(50);
+ }
+ if((status&0x02)==0x02)
+ {
+ //middle delay_ms(100);
+ m25p80_write_cmd(M25P80_WRITE_DISABLE, schip_en);
+ }
+ //printf("\n<--m25p80_sector_erase");
+ return res;
+}
+
+static void m25p80_write_cmd(__u8 cmd, __u32 schip_en)
+{
+ __u32 opcode,tmp;
+ __u32 status;
+
+
+
+
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE | cmd;
+
+ opcode|=g_chipen;
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ //////
+ opcode = 0x80000000 | FLASH_ACCESS_ACTION_OPCODE_DATA | M25P80_READ_STATUS;
+
+ opcode|=g_chipen;
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ //middle delay_ms(130);
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //printf("\ncmd =%x status = %x",cmd,status);
+ if(cmd==M25P80_WRITE_ENABLE)
+ {
+ //printf("\n**-->enable** status = %x",status);
+ //middle delay_ms(100);
+ while((status&0x03) != 2)
+ {
+ //if((status&0x9c)!=0)
+ // printf(" M25P80_WRITE_ENABLE Protect Status = %x\n",status);
+
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ //flash_delay();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //printf("\n**enable** status = %x",status);
+ flash_delay();
+ schedule();
+ //middle delay_ms(100);
+ }
+ }
+ else if(cmd==M25P80_WRITE_DISABLE)
+ {
+ //while((status&0x03) == 2)
+ // printf("\n**disable** status = %x",status);
+ //middle delay_ms(100);
+ while((status&0x03) != 0)
+ {
+ //m25p80_write_status((status&0xfd),schip_en);
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ //printf("\n**disable** status = %x",status);
+ flash_delay();
+ schedule();
+ //middle delay_ms(50);
+ }
+ }
+ else
+ {
+ //while((status&0x01) !=0)
+ while((status&0x01) !=0)
+ {
+ write_flash_ctrl_reg(FLASH_ACCESS_OFFSET, opcode);
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ while(tmp&0x80000000)
+ {
+ tmp=read_flash_ctrl_reg(FLASH_ACCESS_OFFSET);
+ flash_delay();
+ schedule();
+ }
+ status = read_flash_ctrl_reg(FLASH_READ_DATA_OFFSET);
+ flash_delay();
+ schedule();
+ //middle delay_ms(50);
+ }
+ }
+ //////
+
+ //printf("\n<-- status = %x",status);
+}
+
+static int __init init_sl2312_m25p80(void)
+{
+ int nr_parts = 0;
+ struct mtd_partition *parts;
+
+ serial_mtd = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
+ if (!serial_mtd)
+ return NULL;
+
+ memset(serial_mtd, 0, sizeof(struct mtd_info));
+ m25p80_map.virt = (unsigned long)ioremap(SL2312_FLASH_BASE, SFLASH_SIZE);//(unsigned long)ioremap(FLASH_START, SFLASH_SIZE);
+ if (!m25p80_map.virt) {
+ printk(" failed to ioremap \n");
+ return -EIO;
+ }
+ serial_mtd = do_map_probe("map_serial", &m25p80_map);
+ if (serial_mtd) {
+ serial_mtd->owner = THIS_MODULE;
+
+ }
+
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+ nr_parts = parse_redboot_partitions(serial_mtd, &parsed_parts);
+ if (nr_parts > 0)
+ printk(KERN_NOTICE "Found RedBoot partition table.\n");
+ else if (nr_parts < 0)
+ printk(KERN_NOTICE "Error looking for RedBoot partitions.\n");
+#else
+ parsed_parts = m25p80_partitions;
+ parts = m25p80_partitions;
+ nr_parts = sizeof(m25p80_partitions)/sizeof(*parts);
+ nr_parts = sizeof(m25p80_partitions)/sizeof(*parsed_parts);
+#endif /* CONFIG_MTD_REDBOOT_PARTS */
+
+ if (nr_parts > 0)
+ add_mtd_partitions(serial_mtd, parsed_parts, nr_parts);
+ else
+ add_mtd_device(serial_mtd);
+
+ return 0;
+}
+
+static void __exit cleanup_sl2312_m25p80(void)
+{
+ if (parsed_parts)
+ del_mtd_partitions(serial_mtd);
+ else
+ del_mtd_device(serial_mtd);
+
+ map_destroy(serial_mtd);
+
+
+}
+
+module_init(init_sl2312_m25p80);
+module_exit(cleanup_sl2312_m25p80);
+
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Plus Chen <plus@storlink.com.tw>");
+MODULE_DESCRIPTION("MTD map driver for Storlink Sword boards");
+
--- /dev/null
+++ b/drivers/mtd/maps/sl2312_flashmap.h
@@ -0,0 +1,20 @@
+/*
+ * Please note that the name are used in mkflash script. Therefore
+ * don't change them. If you want to add different partitions, you
+ * will need to modify mkflash script as well so that the end image
+ * is what you include here!
+ *
+ * Also, the 7th item is always the size, so please don't add extra
+ * spaces in the name or other items.
+ *
+ * - Alan
+ */
+
+static struct mtd_partition sl2312_partitions[] = {
+ { name: "RedBoot", offset: 0x00000000, size: 0x00020000, },
+ { name: "kernel", offset: 0x00020000, size: 0x00100000, },
+ { name: "rootfs", offset: 0x00120000, size: 0x006A0000, },
+ { name: "VCTL", offset: 0x007C0000, size: 0x00010000, },
+ { name: "cfg", offset: 0x007D0000, size: 0x00020000, },
+ { name: "FIS directory", offset: 0x007F0000, size: 0x00010000, }
+};
--- /dev/null
+++ b/drivers/mtd/maps/sl2312_flashmap.h.16MB
@@ -0,0 +1,21 @@
+/*
+ * Please note that the name are used in mkflash script. Therefore
+ * don't change them. If you want to add different partitions, you
+ * will need to modify mkflash script as well so that the end image
+ * is what you include here!
+ *
+ * Also, the 7th item is always the size, so please don't add extra
+ * spaces in the name or other items.
+ *
+ * - Alan
+ */
+
+static struct mtd_partition sl2312_partitions[] = {
+ { name: "RedBoot", offset: 0x00000000, size: 0x00020000, },
+ { name: "Kernel", offset: 0x00020000, size: 0x00300000, },
+ { name: "Ramdisk", offset: 0x00320000, size: 0x00600000, },
+ { name: "Application", offset: 0x00920000, size: 0x00600000, },
+ { name: "VCTL", offset: 0x00F20000, size: 0x00020000, },
+ { name: "CurConf", offset: 0x00F40000, size: 0x000A0000, },
+ { name: "FIS directory", offset: 0x00FE0000, size: 0x00020000, }
+};
--- /dev/null
+++ b/drivers/mtd/maps/sl2312_flashmap.h.8MB
@@ -0,0 +1,21 @@
+/*
+ * Please note that the name are used in mkflash script. Therefore
+ * don't change them. If you want to add different partitions, you
+ * will need to modify mkflash script as well so that the end image
+ * is what you include here!
+ *
+ * Also, the 7th item is always the size, so please don't add extra
+ * spaces in the name or other items.
+ *
+ * - Alan
+ */
+
+static struct mtd_partition sl2312_partitions[] = {
+ { name: "RedBoot", offset: 0x00000000, size: 0x00020000, },
+ { name: "Kernel", offset: 0x00020000, size: 0x00200000, },
+ { name: "Ramdisk", offset: 0x00220000, size: 0x00280000, },
+ { name: "Application", offset: 0x004A0000, size: 0x00300000, },
+ { name: "VCTL", offset: 0x007A0000, size: 0x00020000, },
+ { name: "CurConf", offset: 0x007C0000, size: 0x00020000, },
+ { name: "FIS directory", offset: 0x007E0000, size: 0x00020000, }
+};
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -59,6 +59,77 @@ struct mtd_file_info {
enum mtd_file_modes mode;
};
+/***********************************************************************
+/* Storlink SoC -- flash
+/***********************************************************************/
+#ifdef CONFIG_SL2312_SHARE_PIN
+unsigned int share_pin_flag=0; // bit0:FLASH, bit1:UART, bit2:EMAC, bit3-4:IDE
+unsigned int check_sleep_flag=0; // bit0:FLASH, bit1:IDE
+static spinlock_t sl2312_flash_lock = SPIN_LOCK_UNLOCKED;
+EXPORT_SYMBOL(share_pin_flag);
+int dbg=0;
+DECLARE_WAIT_QUEUE_HEAD(wq);
+extern struct wait_queue_head_t *flash_wait;
+unsigned int flash_req=0;
+void mtd_lock()
+{
+ struct task_struct *tsk = current;
+ unsigned int value ;
+ unsigned long flags;
+ flash_req = 1;
+ DECLARE_WAITQUEUE(wait, tsk);
+ add_wait_queue(&wq, &wait);
+ for(;;)
+ {
+ set_task_state(tsk, TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&sl2312_flash_lock,flags);
+ if((share_pin_flag&0x1E)){//||(check_sleep_flag&0x00000002)) {
+ spin_unlock_irqrestore(&sl2312_flash_lock, flags);
+ check_sleep_flag |= 0x00000001;
+ if(dbg)
+ printk("mtd yield %x %x\n",share_pin_flag,check_sleep_flag);
+ wake_up_interruptible(&flash_wait);
+ schedule();
+ }
+ else {
+ check_sleep_flag &= ~0x01;
+ share_pin_flag |= 0x00000001 ; // set share pin flag
+ spin_unlock_irqrestore(&sl2312_flash_lock, flags);
+ value = readl(IO_ADDRESS((SL2312_GLOBAL_BASE+GLOBAL_MISC_REG)));
+ value = value & (~PFLASH_SHARE_BIT) ;
+ writel(value,IO_ADDRESS((SL2312_GLOBAL_BASE+GLOBAL_MISC_REG)));
+ if(dbg)
+ printk("mtd Go %x %x\n",share_pin_flag,check_sleep_flag);
+ tsk->state = TASK_RUNNING;
+ remove_wait_queue(&wq, &wait);
+ return ;
+ }
+ }
+}
+
+void mtd_unlock()
+{
+ unsigned int value ;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sl2312_flash_lock,flags); // Disable IRQ
+ value = readl(IO_ADDRESS((SL2312_GLOBAL_BASE+GLOBAL_MISC_REG)));
+ value = value | PFLASH_SHARE_BIT ; // Disable Flash PADs
+ writel(value,IO_ADDRESS((SL2312_GLOBAL_BASE+GLOBAL_MISC_REG)));
+ share_pin_flag &= ~(0x00000001); // clear share pin flag
+ check_sleep_flag &= ~0x00000001;
+ spin_unlock_irqrestore(&sl2312_flash_lock, flags); // Restore IRQ
+ if (check_sleep_flag & 0x00000002)
+ {
+ check_sleep_flag &= ~(0x00000002);
+ wake_up_interruptible(&flash_wait);
+ }
+ DEBUG(MTD_DEBUG_LEVEL0, "Flash Unlock...\n");
+ flash_req = 0;
+}
+#endif
+/***********************************************************************/
+
static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
{
struct mtd_file_info *mfi = file->private_data;
@@ -162,13 +233,21 @@ static ssize_t mtd_read(struct file *fil
int len;
char *kbuf;
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_lock(); // sl2312 share pin lock
+#endif
+
DEBUG(MTD_DEBUG_LEVEL0,"MTD_read\n");
if (*ppos + count > mtd->size)
count = mtd->size - *ppos;
- if (!count)
+ if (!count){
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return 0;
+ }
/* FIXME: Use kiovec in 2.5 to lock down the user's buffers
and pass them directly to the MTD functions */
@@ -178,8 +257,12 @@ static ssize_t mtd_read(struct file *fil
else
kbuf=kmalloc(count, GFP_KERNEL);
- if (!kbuf)
+ if (!kbuf) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -ENOMEM;
+ }
while (count) {
@@ -224,6 +307,9 @@ static ssize_t mtd_read(struct file *fil
*ppos += retlen;
if (copy_to_user(buf, kbuf, retlen)) {
kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
}
else
@@ -235,13 +321,19 @@ static ssize_t mtd_read(struct file *fil
count = 0;
}
else {
- kfree(kbuf);
+ kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return ret;
}
}
kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return total_retlen;
} /* mtd_read */
@@ -255,24 +347,40 @@ static ssize_t mtd_write(struct file *fi
int ret=0;
int len;
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_lock(); // sl2312 share pin lock
+#endif
+
DEBUG(MTD_DEBUG_LEVEL0,"MTD_write\n");
- if (*ppos == mtd->size)
+ if (*ppos == mtd->size){
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -ENOSPC;
+ }
if (*ppos + count > mtd->size)
count = mtd->size - *ppos;
- if (!count)
+ if (!count){
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return 0;
+ }
if (count > MAX_KMALLOC_SIZE)
kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
else
kbuf=kmalloc(count, GFP_KERNEL);
- if (!kbuf)
+ if (!kbuf) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -ENOMEM;
+ }
while (count) {
@@ -283,6 +391,9 @@ static ssize_t mtd_write(struct file *fi
if (copy_from_user(kbuf, buf, len)) {
kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
}
@@ -323,11 +434,17 @@ static ssize_t mtd_write(struct file *fi
}
else {
kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return ret;
}
}
kfree(kbuf);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return total_retlen;
} /* mtd_write */
@@ -381,36 +498,67 @@ static int mtd_ioctl(struct inode *inode
u_long size;
struct mtd_info_user info;
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_lock(); // sl2312 share pin lock
+#endif
+
DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT;
if (cmd & IOC_IN) {
if (!access_ok(VERIFY_READ, argp, size))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
}
if (cmd & IOC_OUT) {
if (!access_ok(VERIFY_WRITE, argp, size))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
}
switch (cmd) {
case MEMGETREGIONCOUNT:
if (copy_to_user(argp, &(mtd->numeraseregions), sizeof(int)))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
break;
case MEMGETREGIONINFO:
{
struct region_info_user ur;
- if (copy_from_user(&ur, argp, sizeof(struct region_info_user)))
+ if (copy_from_user(&ur, argp, sizeof(struct region_info_user))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
- if (ur.regionindex >= mtd->numeraseregions)
+ if (ur.regionindex >= mtd->numeraseregions) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EINVAL;
+ }
if (copy_to_user(argp, &(mtd->eraseregions[ur.regionindex]),
- sizeof(struct mtd_erase_region_info)))
+ sizeof(struct mtd_erase_region_info))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
break;
}
@@ -433,7 +581,12 @@ static int mtd_ioctl(struct inode *inode
struct erase_info *erase;
if(!(file->f_mode & 2))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EPERM;
+ }
erase=kzalloc(sizeof(struct erase_info),GFP_KERNEL);
if (!erase)
@@ -447,6 +600,9 @@ static int mtd_ioctl(struct inode *inode
if (copy_from_user(&erase->addr, argp,
sizeof(struct erase_info_user))) {
kfree(erase);
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
}
erase->mtd = mtd;
@@ -484,14 +640,26 @@ static int mtd_ioctl(struct inode *inode
struct mtd_oob_buf buf;
struct mtd_oob_ops ops;
- if(!(file->f_mode & 2))
+ if(!(file->f_mode & 2)) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EPERM;
+ }
- if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
+ if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
- if (buf.length > 4096)
+ if (buf.length > 4096) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EINVAL;
+ }
if (!mtd->write_oob)
ret = -EOPNOTSUPP;
@@ -499,8 +667,12 @@ static int mtd_ioctl(struct inode *inode
ret = access_ok(VERIFY_READ, buf.ptr,
buf.length) ? 0 : EFAULT;
- if (ret)
+ if (ret) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return ret;
+ }
ops.ooblen = buf.length;
ops.ooboffs = buf.start & (mtd->oobsize - 1);
@@ -536,19 +708,35 @@ static int mtd_ioctl(struct inode *inode
struct mtd_oob_buf buf;
struct mtd_oob_ops ops;
- if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
+ if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
- if (buf.length > 4096)
+ if (buf.length > 4096) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EINVAL;
+ }
- if (!mtd->read_oob)
+ if (!mtd->read_oob) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
ret = -EOPNOTSUPP;
+ }
else
ret = access_ok(VERIFY_WRITE, buf.ptr,
buf.length) ? 0 : -EFAULT;
- if (ret)
+ if (ret) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return ret;
+ }
ops.ooblen = buf.length;
ops.ooboffs = buf.start & (mtd->oobsize - 1);
@@ -580,7 +768,12 @@ static int mtd_ioctl(struct inode *inode
struct erase_info_user info;
if (copy_from_user(&info, argp, sizeof(info)))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
if (!mtd->lock)
ret = -EOPNOTSUPP;
@@ -594,7 +787,12 @@ static int mtd_ioctl(struct inode *inode
struct erase_info_user info;
if (copy_from_user(&info, argp, sizeof(info)))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
if (!mtd->unlock)
ret = -EOPNOTSUPP;
@@ -629,11 +827,21 @@ static int mtd_ioctl(struct inode *inode
loff_t offs;
if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
if (!mtd->block_isbad)
ret = -EOPNOTSUPP;
else
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return mtd->block_isbad(mtd, offs);
+ }
break;
}
@@ -642,11 +850,21 @@ static int mtd_ioctl(struct inode *inode
loff_t offs;
if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
if (!mtd->block_markbad)
ret = -EOPNOTSUPP;
else
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return mtd->block_markbad(mtd, offs);
+ }
break;
}
@@ -654,8 +872,12 @@ static int mtd_ioctl(struct inode *inode
case OTPSELECT:
{
int mode;
- if (copy_from_user(&mode, argp, sizeof(int)))
+ if (copy_from_user(&mode, argp, sizeof(int))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
+ }
mfi->mode = MTD_MODE_NORMAL;
@@ -670,7 +892,12 @@ static int mtd_ioctl(struct inode *inode
{
struct otp_info *buf = kmalloc(4096, GFP_KERNEL);
if (!buf)
+ {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -ENOMEM;
+ }
ret = -EOPNOTSUPP;
switch (mfi->mode) {
case MTD_MODE_OTP_FACTORY:
@@ -701,12 +928,24 @@ static int mtd_ioctl(struct inode *inode
{
struct otp_info info;
- if (mfi->mode != MTD_MODE_OTP_USER)
+ if (mfi->mode != MTD_MODE_OTP_USER) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EINVAL;
- if (copy_from_user(&info, argp, sizeof(info)))
+ }
+ if (copy_from_user(&info, argp, sizeof(info))) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EFAULT;
- if (!mtd->lock_user_prot_reg)
+ }
+ if (!mtd->lock_user_prot_reg) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EOPNOTSUPP;
+ }
ret = mtd->lock_user_prot_reg(mtd, info.start, info.length);
break;
}
@@ -742,8 +981,12 @@ static int mtd_ioctl(struct inode *inode
break;
case MTD_MODE_RAW:
- if (!mtd->read_oob || !mtd->write_oob)
+ if (!mtd->read_oob || !mtd->write_oob) {
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
return -EOPNOTSUPP;
+ }
mfi->mode = arg;
case MTD_MODE_NORMAL:
@@ -766,6 +1009,10 @@ static int mtd_ioctl(struct inode *inode
ret = -ENOTTY;
}
+#ifdef CONFIG_SL2312_SHARE_PIN
+ mtd_unlock(); // sl2312 share pin lock
+#endif
+
return ret;
} /* memory_ioctl */
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -44,6 +44,13 @@ config MTD_NAND_AUTCPU12
This enables the driver for the autronix autcpu12 board to
access the SmartMediaCard.
+config MTD_NAND_SL2312
+ tristate "NAND Flash device on Storlink board"
+ depends on ARM && MTD_NAND && ARCH_SL2312
+ help
+ This enables the driver for the Storlink board to
+ access the nand device.
+
config MTD_NAND_EDB7312
tristate "Support for Cirrus Logic EBD7312 evaluation board"
depends on ARCH_EDB7312
--- /dev/null
+++ b/drivers/mtd/nand/sl2312-flash-nand.c
@@ -0,0 +1,2287 @@
+/*
+ * drivers/mtd/sl2312.c
+ *
+ * $Id: sl2312-flash-nand.c,v 1.5 2006/06/15 07:02:29 middle Exp $
+ *
+ * Copyright (C) 2001 Toshiba Corporation
+ *
+ * 2003 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/arch/sl2312.h>
+#include "sl2312-flash-nand.h"
+
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/mtd/compatmac.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+
+
+/*
+ * NAND low-level MTD interface functions
+ */
+static void sl2312_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len);
+static void sl2312_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
+static int sl2312_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
+
+static int sl2312_nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
+static int sl2312_nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
+static int sl2312_nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
+static int sl2312_nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf);
+static int sl2312_nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
+ size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
+static int sl2312_nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf);
+static int sl2312_nand_writev (struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t * retlen);
+static int sl2312_nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
+static int sl2312_nand_erase (struct mtd_info *mtd, struct erase_info *instr, int allowbbt);
+static void sl2312_nand_sync (struct mtd_info *mtd);
+static int sl2312_nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, struct nand_oobinfo *oobsel);
+static int sl2312_nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt);
+static int sl2312_nand_erase_block(struct mtd_info *mtd, int page);
+
+/*
+ * MTD structure for sl2312 NDFMC
+ */
+static struct mtd_info *sl2312_mtd = NULL;
+static int nand_page=0,nand_col=0;
+
+/* Define default oob placement schemes for large and small page devices */
+static struct nand_oobinfo nand_oob_8 = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ .eccbytes = 3,
+ .eccpos = {0, 1, 2},
+ .oobfree = { {3, 2}, {6, 2} }
+};
+
+static struct nand_oobinfo nand_oob_16 = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ .eccbytes = 6,
+ .eccpos = {0, 1, 2, 3, 6, 7},
+ .oobfree = { {8, 8} }
+};
+
+static struct nand_oobinfo nand_oob_64 = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ .eccbytes = 24,
+ .eccpos = {
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
+ 56, 57, 58, 59, 60, 61, 62, 63},
+ .oobfree = { {2, 38} }
+};
+
+
+/*
+ * Define partitions for flash device
+ */
+/* the base address of FLASH control register */
+#define FLASH_CONTROL_BASE_ADDR (IO_ADDRESS(SL2312_FLASH_CTRL_BASE))
+#define SL2312_GLOBAL_BASE_ADDR (IO_ADDRESS(SL2312_GLOBAL_BASE))
+//#define SL2312_FLASH_BASE_ADDR (IO_ADDRESS(SL2312_FLASH_BASE))
+#define SL2312_FLASH_BASE_ADDR FLASH_VADDR(SL2312_FLASH_BASE)
+static unsigned int CHIP_EN;
+/* define read/write register utility */
+//#define FLASH_READ_REG(offset) (__raw_readl(offset+FLASH_CONTROL_BASE_ADDR))
+//#define FLASH_WRITE_REG(offset,val) (__raw_writel(val,offset+FLASH_CONTROL_BASE_ADDR))
+//#define FLASH_READ_DATA(offset) (__raw_readb(offset+SL2312_FLASH_BASE_ADDR))
+//#define FLASH_WRITE_DATA(offset,val) (__raw_writeb(val,offset+SL2312_FLASH_BASE_ADDR))
+
+unsigned int FLASH_READ_REG(unsigned int addr)
+{
+ unsigned int *base;
+ unsigned int data;
+
+ base = (unsigned int *)(FLASH_CONTROL_BASE_ADDR + addr);
+ data = *base;
+ return (data);
+}
+
+void FLASH_WRITE_REG(unsigned int addr,unsigned int data)
+{
+ unsigned int *base;
+
+ base = (unsigned int *)(FLASH_CONTROL_BASE_ADDR + addr);
+ *base = data;
+ return;
+}
+
+unsigned int FLASH_READ_DATA(unsigned int addr)
+{
+ unsigned char *base;
+ unsigned int data;
+
+ base = (unsigned char *)(SL2312_FLASH_BASE_ADDR + addr);
+ data = *base;
+ return (data);
+}
+
+void FLASH_WRITE_DATA(unsigned int addr,unsigned int data)
+{
+ unsigned char *base;
+
+ base = (unsigned char *)(SL2312_FLASH_BASE_ADDR + addr);
+ *base = data;
+ return;
+}
+
+/* the offset of FLASH control register */
+enum NFLASH_REGISTER {
+ NFLASH_ID = 0x0000,
+ NFLASH_STATUS = 0x0008,
+ NFLASH_TYPE = 0x000c,
+ NFLASH_ACCESS = 0x0030,
+ NFLASH_COUNT = 0x0034,
+ NFLASH_CMD_ADDR = 0x0038,
+ NFLASH_ADDRESS = 0x003C,
+ NFLASH_DATA = 0x0040,
+ NFLASH_TIMING = 0x004C,
+ NFLASH_ECC_STATUS = 0x0050,
+ NFLASH_ECC_CONTROL = 0x0054,
+ NFLASH_ECC_OOB = 0x005c,
+ NFLASH_ECC_CODE_GEN0 = 0x0060,
+ NFLASH_ECC_CODE_GEN1 = 0x0064,
+ NFLASH_ECC_CODE_GEN2 = 0x0068,
+ NFLASH_ECC_CODE_GEN3 = 0x006C,
+ NFLASH_FIFO_CONTROL = 0x0070,
+ NFLASH_FIFO_STATUS = 0x0074,
+ NFLASH_FIFO_ADDRESS = 0x0078,
+ NFLASH_FIFO_DATA = 0x007c,
+};
+
+
+
+//#define FLASH_BASE FLASH_CONTROL_BASE_ADDR
+//#define FLASH_SIZE 0x00800000 //INTEGRATOR_FLASH_SIZE
+
+//#define FLASH_PART_SIZE 8388608
+
+//static unsigned int flash_indirect_access = 0;
+
+
+#ifdef CONFIG_SL2312_SHARE_PIN
+void sl2312flash_enable_nand_flash(void)
+{
+ unsigned int reg_val;
+
+ reg_val = readl(SL2312_GLOBAL_BASE_ADDR + 0x30);
+ reg_val = reg_val & 0xfffffffb;
+ writel(reg_val,SL2312_GLOBAL_BASE_ADDR + 0x30);
+ return;
+}
+
+void sl2312flash_disable_nand_flash(void)
+{
+ unsigned int reg_val;
+
+ reg_val = readl(SL2312_GLOBAL_BASE_ADDR + 0x30);
+ reg_val = reg_val | 0x00000004;
+ writel(reg_val,SL2312_GLOBAL_BASE_ADDR + 0x30);
+ return;
+}
+#endif
+
+extern struct nand_oobinfo jffs2_oobinfo;
+/*
+ * Define partitions for flash devices
+ */
+
+static struct mtd_partition sl2312_partitions[] = {
+ { name: "RedBoot", offset: 0x00000000, size: 0x0020000, },
+ { name: "Kernel", offset: 0x00020000, size: 0x00200000, },
+ { name: "Ramdisk", offset: 0x00220000, size: 0x00280000, },
+ { name: "Application", offset: 0x004A0000, size: 0x00320000, },
+ { name: "VCTL", offset: 0x007C0000, size: 0x20000, },
+ { name: "CurConf", offset: 0x007E0000, size: 0x20000, },
+ { name: "FIS directory", offset: 0x007e0000, size: 0x00020000, }
+
+};
+
+
+/*
+ * hardware specific access to control-lines
+*/
+static void sl2312_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+
+ return ;
+}
+
+static int sl2312_nand_scan_bbt(struct mtd_info *mtd)
+{
+ return 0;
+}
+
+/**
+ * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
+ * @mtd: MTD device structure
+ * @ofs: offset relative to mtd start
+ */
+static int sl2312_nand_block_isbad (struct mtd_info *mtd, loff_t ofs)
+{
+ /* Check for invalid offset */
+ if (ofs > mtd->size)
+ return -EINVAL;
+
+ return sl2312_nand_block_checkbad (mtd, ofs, 1, 0);
+}
+
+/**
+ * nand_block_checkbad - [GENERIC] Check if a block is marked bad
+ * @mtd: MTD device structure
+ * @ofs: offset from device start
+ * @getchip: 0, if the chip is already selected
+ * @allowbbt: 1, if its allowed to access the bbt area
+ *
+ * Check, if the block is bad. Either by reading the bad block table or
+ * calling of the scan function.
+ */
+
+static int sl2312_nand_erase_block(struct mtd_info *mtd, int page)
+{
+ int opcode;
+ /* Send commands to erase a page */
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+
+ if(mtd->oobblock > 528)
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f0fff21); // 3 address & 2 command
+ else
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f0fff11); // 2 address & 2 command
+
+ FLASH_WRITE_REG(NFLASH_CMD_ADDR, 0x0000d060); // write read id command
+ FLASH_WRITE_REG(NFLASH_ADDRESS, page); //write address 0x00
+
+
+
+ /* read maker code */
+ opcode = 0x80003000|DWIDTH|CHIP_EN; //set start bit & 8bits write command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ //cond_resched();
+ }
+}
+
+void sl2312_flash_delay(void)
+{
+ int i;
+
+ for(i=0; i<50; i++)
+ i=i;
+}
+
+static int sl2312_nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
+{
+ struct nand_chip *this = mtd->priv;
+
+ if (!this->bbt)
+ return this->block_bad(mtd, ofs, getchip);
+
+ /* Return info from the table */
+ return nand_isbad_bbt (mtd, ofs, allowbbt);
+}
+
+/**
+ * nand_block_markbad - [MTD Interface] Mark the block at the given offset as bad
+ * @mtd: MTD device structure
+ * @ofs: offset relative to mtd start
+ */
+static int sl2312_nand_block_markbad (struct mtd_info *mtd, loff_t ofs)
+{
+ struct nand_chip *this = mtd->priv;
+ int ret;
+
+ if ((ret = sl2312_nand_block_isbad(mtd, ofs))) {
+ /* If it was bad already, return success and do nothing. */
+ if (ret > 0)
+ return 0;
+ return ret;
+ }
+
+ return this->block_markbad(mtd, ofs);
+}
+
+/*
+ * Get chip for selected access
+ */
+static inline void sl2312_nand_get_chip (struct nand_chip *this, struct mtd_info *mtd, int new_state, int *erase_state)
+{
+
+ DECLARE_WAITQUEUE (wait, current);
+
+ /*
+ * Grab the lock and see if the device is available
+ * For erasing, we keep the spinlock until the
+ * erase command is written.
+ */
+retry:
+ spin_lock_bh (&this->chip_lock);
+
+ if (this->state == FL_READY) {
+ this->state = new_state;
+ if (new_state != FL_ERASING)
+ spin_unlock_bh (&this->chip_lock);
+ return;
+ }
+
+ if (this->state == FL_ERASING) {
+ if (new_state != FL_ERASING) {
+ this->state = new_state;
+ spin_unlock_bh (&this->chip_lock);
+ this->select_chip(mtd, 0); /* select in any case */
+ this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+ return;
+ }
+ }
+
+ set_current_state (TASK_UNINTERRUPTIBLE);
+ add_wait_queue (&this->wq, &wait);
+ spin_unlock_bh (&this->chip_lock);
+ schedule ();
+ remove_wait_queue (&this->wq, &wait);
+ goto retry;
+}
+
+/*
+* read device ready pin
+*/
+static int sl2312_device_ready(struct mtd_info *mtd)
+{
+ int ready;
+
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f000070); //set only command no address and two data
+
+ FLASH_WRITE_REG(NFLASH_CMD_ADDR, 0x00000070); //write read status command
+
+
+ ready = 0x80002000|DWIDTH|CHIP_EN; //set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, ready);
+
+ while(ready&0x80000000) //polling flash access 31b
+ {
+ ready=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ ready=FLASH_READ_REG(NFLASH_DATA)&0xff;
+ return ready;
+}
+void sl2312_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+ /* reset first */
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x80000001); //set 31b = 0
+
+}
+
+
+void sl2312_device_setup(void)
+{
+
+}
+static u_char sl2312_nand_read_byte(struct mtd_info *mtd)
+{
+
+ unsigned int data=0, page=0, col=0, tmp, i;
+
+ printk ("**************************sl2312_nand_read_byte !! \n");
+ //page = FLASH_READ_REG(NFLASH_ADDRESS)&0xffffff00;
+ //col = FLASH_READ_REG(NFLASH_ADDRESS)&0x000000ff;
+ page = nand_page;
+ col = nand_col;
+ for(i=0;i<(mtd->oobblock+mtd->oobsize);i++)
+ {
+ if(i==col)
+ data = FLASH_READ_DATA(page*mtd->oobblock +i);
+ else
+ tmp = FLASH_READ_DATA(page*mtd->oobblock +i);
+ }
+ return data&0xff;
+}
+
+static void sl2312_nand_write_byte(struct mtd_info *mtd, u_char byte)
+{
+ //struct nand_chip *this = mtd->priv;
+ unsigned int page=0, col=0, i;
+ u_char *databuf,oobbuf[mtd->oobsize];
+ size_t retlen;
+ retlen=0;
+ printk ("********************sl2312_nand_write_byte !! \n");
+ page = nand_page;
+ col = nand_col;
+ databuf = kmalloc (mtd->oobsize+mtd->oobblock,GFP_KERNEL);
+
+ if (!databuf) {
+ printk ("sl2312_nand_write_byte : Unable to allocate SL2312 NAND MTD device structure.\n");
+
+ }
+
+ for(i=0;i<(mtd->oobblock+mtd->oobsize);i++)
+ databuf[i] = FLASH_READ_DATA(page*mtd->oobblock +i);
+
+ databuf[col] = byte;
+ sl2312_nand_write_ecc (mtd, page, mtd->oobblock, &retlen, databuf, oobbuf, NULL);
+
+}
+
+static void sl2312_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+{
+ int i, page=0,col=0;
+ struct nand_chip *this = mtd->priv;
+ u_char *databuf, *oobbuf;
+ size_t retlen;
+ retlen=0;
+
+
+ printk ("***********************sl2312_nand_write_buf !! \n");
+ databuf = &(this->data_buf[0]);
+ oobbuf = &(this->data_buf[mtd->oobblock]);
+ for (i = 0; i < mtd->oobsize; i++)
+ oobbuf[i] = 0xff;
+
+ if(len < mtd->oobblock)
+ {
+ //addr = FLASH_READ_REG(NFLASH_ADDRESS);
+ //page = FLASH_READ_REG(NFLASH_ADDRESS)&0xffffff00;
+ //col = FLASH_READ_REG(NFLASH_ADDRESS)&0x000000ff;
+ page = nand_page;
+ col = nand_col;
+
+ sl2312_nand_read_ecc (mtd, page, mtd->oobblock , &retlen, databuf, oobbuf, NULL);
+
+ for(i=col;i<len;i++)
+ databuf[col+i] = buf[i];
+
+ sl2312_nand_write_ecc (mtd, page, mtd->oobblock, &retlen, databuf, oobbuf, NULL);
+
+ }
+
+}
+
+static void sl2312_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+{
+ int i, page=0,col=0,addr=0,tmp=0;
+ //struct nand_chip *this = mtd->priv;
+ printk ("********************sl2312_nand_read_buf !! \n");
+ if(len < mtd->oobblock)
+ {
+ //addr = FLASH_READ_REG(NFLASH_ADDRESS);
+ //page = FLASH_READ_REG(NFLASH_ADDRESS)&0xffffff00;
+ //col = FLASH_READ_REG(NFLASH_ADDRESS)&0x000000ff;
+ page = nand_page;
+ col = nand_col;
+ for (i=col; i<((mtd->oobblock+mtd->oobsize)-col); i++)
+ {
+ if(i<len)
+ buf[i] = FLASH_READ_DATA(addr+i);
+ else
+ tmp = FLASH_READ_DATA(addr+i);
+ }
+ }
+}
+
+static int sl2312_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
+{
+ int i;
+ //struct nand_chip *this = mtd->priv;
+ u_char *datatmp, *oobtmp;
+ size_t retlen;
+ retlen=0;
+
+ datatmp = kmalloc (mtd->oobblock,GFP_KERNEL);
+ oobtmp = kmalloc (mtd->oobsize,GFP_KERNEL);
+
+ if ((!datatmp)||(!oobtmp)) {
+ printk ("sl2312_nand_verify_buf : Unable to allocate SL2312 NAND MTD device structure.\n");
+
+ }
+ //page = nand_page;
+ for(i=0;i<mtd->oobblock;i++)
+ datatmp[i] = FLASH_READ_DATA(nand_page*mtd->oobblock +i);
+ /* read oobdata */
+ for (i = 0; i < mtd->oobsize; i++)
+ oobtmp[i] = FLASH_READ_DATA(nand_page*mtd->oobblock + mtd->oobblock + i);
+
+ if(len==mtd->oobblock)
+ {
+ for (i=0; i<len; i++)
+ {
+ if (buf[i] != datatmp[i])
+ {
+ kfree(datatmp);
+ kfree(oobtmp);
+ printk("Data verify error -> page: %x, byte: %x \n",nand_page,i);
+ return i;
+ }
+ }
+ }
+ else if(len == mtd->oobsize)
+ {
+ for (i=0; i<len; i++)
+ {
+ if (buf[i] != oobtmp[i])
+ {
+ kfree(datatmp);
+ kfree(oobtmp);
+ printk("OOB verify error -> page: %x, byte: %x \n",nand_page,i);
+ return i;
+ }
+ }
+ }
+ else
+ {
+ printk (KERN_WARNING "sl2312_nand_verify_buf : verify length not match 0x%08x\n", len);
+ kfree(datatmp);
+ kfree(oobtmp);
+ return -1;
+ }
+
+ kfree(datatmp);
+ kfree(oobtmp);
+ return 0;
+}
+
+/*
+ * Send command to NAND device
+ */
+static void sl2312_nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+{
+ register struct nand_chip *this = mtd->priv;
+ int opcode;
+
+
+ /*
+ * program and erase have their own busy handlers
+ * status and sequential in needs no delay
+ */
+ switch (command) {
+
+ case NAND_CMD_PAGEPROG:
+ case NAND_CMD_ERASE1:
+ case NAND_CMD_ERASE2:
+ case NAND_CMD_SEQIN:
+ case NAND_CMD_STATUS:
+ case NAND_CMD_READ0:
+
+ /*
+ * Write out the command to the device.
+ */
+ if (column != -1 || page_addr != -1) {
+
+ /* Serially input address */
+ if (column != -1)
+ //FLASH_WRITE_REG(NFLASH_ADDRESS,column);
+ nand_col=column;
+
+ opcode = FLASH_READ_REG(NFLASH_ADDRESS);
+
+ if (page_addr != -1)
+ //FLASH_WRITE_REG(NFLASH_ADDRESS,opcode|(page_addr<<8));
+ nand_page = page_addr;
+
+ }
+ return;
+
+ case NAND_CMD_RESET:
+ if (this->dev_ready)
+ break;
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f0fff70); //set only command and no other data
+ FLASH_WRITE_REG(NFLASH_CMD_ADDR, NAND_CMD_RESET); //write reset command
+
+ opcode = 0x80002000|DWIDTH|CHIP_EN; //set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+ while ( !(sl2312_device_ready(mtd) & 0x40));
+ {
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ //sl2312_flash_delay();
+ schedule();
+ return;
+ }
+ /* This applies to read commands */
+ default:
+ /*
+ * If we don't have access to the busy pin, we apply the given
+ * command delay
+ */
+ if (!this->dev_ready) {
+ udelay (this->chip_delay);
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ return;
+ }
+ }
+
+ /* wait until command is processed */
+ while (!this->dev_ready(mtd));
+
+}
+/*Add function*/
+static void nand_read_id(int chip_no, unsigned char *id)
+{
+ unsigned int opcode, i;
+
+ if(chip_no==0)
+ CHIP_EN = NFLASH_CHIP0_EN;
+ else
+ CHIP_EN = NFLASH_CHIP1_EN;
+
+ opcode = FLASH_READ_REG(NFLASH_TYPE);
+
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+ if((opcode&0x00000300)<=0x00000100)
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f000100); //set only command & address and two data
+ else
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x7f000300); //set only command & address and 4 data
+
+ FLASH_WRITE_REG(NFLASH_CMD_ADDR, 0x00000090); //write read id command
+ FLASH_WRITE_REG(NFLASH_ADDRESS, 0x00000000); //write address 0x00
+
+ /* read maker code */
+ opcode = 0x80002000|DWIDTH|CHIP_EN;//|chip0_en; //set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+
+ opcode = FLASH_READ_REG(NFLASH_DATA);
+ if(DWIDTH==NFLASH_WiDTH16)
+ {
+ id[0] = opcode&0xff;
+ id[1] = (opcode&0xff00)>>8;
+ }
+ else
+ {
+ id[0] = opcode&0xff;
+ opcode = 0x80002000|DWIDTH|CHIP_EN;//|chip0_en; //set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+ opcode = FLASH_READ_REG(NFLASH_DATA);
+ id[1] = (opcode&0xff00)>>8;
+
+ opcode=FLASH_READ_REG(NFLASH_TYPE);
+ if((opcode&0x300)>0x100)
+ {
+ for(i=0;i<2;i++)
+ {
+ //data cycle 3 & 4 ->not use
+ opcode = 0x80002000|DWIDTH|CHIP_EN;//set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+
+ opcode=FLASH_READ_REG(NFLASH_DATA);
+ id[2+i] = (opcode&(0xff0000<<i*8))>>(8*(2+i));
+ }
+ }
+ }
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+}
+
+/*
+ * NAND erase a block
+ */
+static int sl2312_nand_erase (struct mtd_info *mtd, struct erase_info *instr, int allowbbt)
+{
+ int page, len, status, pages_per_block, ret, chipnr;
+ struct nand_chip *this = mtd->priv;
+
+ DEBUG (MTD_DEBUG_LEVEL3,
+ "nand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len);
+
+ /* Start address must align on block boundary */
+ if (instr->addr & ((1 << this->phys_erase_shift) - 1)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n");
+ return -EINVAL;
+ }
+
+ /* Length must align on block boundary */
+ if (instr->len & ((1 << this->phys_erase_shift) - 1)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n");
+ return -EINVAL;
+ }
+
+ /* Do not allow erase past end of device */
+ if ((instr->len + instr->addr) > mtd->size) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n");
+ return -EINVAL;
+ }
+
+ instr->fail_addr = 0xffffffff;
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd, FL_ERASING, NULL);
+
+ /* Shift to get first page */
+ page = (int) (instr->addr >> this->page_shift);
+ chipnr = (int) (instr->addr >> this->chip_shift);
+
+ /* Calculate pages in each block */
+ pages_per_block = 1 << (this->phys_erase_shift - this->page_shift);
+
+ /* Select the NAND device */
+ //this->select_chip(mtd, chipnr);
+ this->select_chip(mtd, 0);
+
+ /* Check the WP bit */
+ /* Check, if it is write protected */
+ status = sl2312_device_ready(mtd);
+ if (!(status & 0x80)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n");
+ instr->state = MTD_ERASE_FAILED;
+ goto erase_exit;
+ }
+
+ /* Loop through the pages */
+ len = instr->len;
+
+ instr->state = MTD_ERASING;
+
+ while (len) {
+ /* Check if we have a bad block, we do not erase bad blocks ! */
+ if (this->block_bad(mtd, ((loff_t) page) << this->page_shift, 0)) {
+ printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page);
+ //instr->state = MTD_ERASE_FAILED;
+ //goto erase_exit;
+ }
+
+ /* Invalidate the page cache, if we erase the block which contains
+ the current cached page */
+ if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block))
+ this->pagebuf = -1;
+ /////////
+
+ ///* Send commands to erase a page */
+ //FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+ //
+ //if(mtd->oobblock > 528)
+ // FLASH_WRITE_REG(NFLASH_COUNT, 0x7f0fff21); // 3 address & 2 command
+ //else
+ // FLASH_WRITE_REG(NFLASH_COUNT, 0x7f0fff11); // 2 address & 2 command
+ //
+ //FLASH_WRITE_REG(NFLASH_CMD_ADDR, 0x0000d060); // write read id command
+ //FLASH_WRITE_REG(NFLASH_ADDRESS, page); //write address 0x00
+ //
+ //
+ //
+ ///* read maker code */
+ //opcode = 0x80003000|DWIDTH|CHIP_EN; //set start bit & 8bits write command
+ //FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+ //
+ //while(opcode&0x80000000) //polling flash access 31b
+ //{
+ // opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ // //sl2312_flash_delay();
+ // schedule();
+ // //cond_resched();
+ //}
+ sl2312_nand_erase_block(mtd, page);
+ //////////////
+ status = this->waitfunc (mtd, this, FL_ERASING);
+ /* See if block erase succeeded */
+ if (status & 0x01) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page);
+ instr->state = MTD_ERASE_FAILED;
+ instr->fail_addr = (page << this->page_shift);
+ goto erase_exit;
+ }
+
+ /* Increment page address and decrement length */
+ len -= (1 << this->phys_erase_shift);
+ page += pages_per_block;
+
+ /* Check, if we cross a chip boundary */
+ if (len && !(page & this->pagemask)) {
+ chipnr++;
+ this->select_chip(mtd, 0);
+ this->select_chip(mtd, 0);
+ }
+ //sl2312_flash_delay();
+ schedule();
+ //cond_resched();
+ }
+ instr->state = MTD_ERASE_DONE;
+
+erase_exit:
+ /* De-select the NAND device */
+ this->select_chip(mtd, 0);
+ spin_unlock_bh (&this->chip_lock);
+
+ ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;;
+ /* Do call back function */
+ if (!ret && instr->callback)
+ instr->callback (instr);
+
+ /* The device is ready */
+ spin_lock_bh (&this->chip_lock);
+ this->state = FL_READY;
+ spin_unlock_bh (&this->chip_lock);
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ /* Return more or less happy */
+ return ret;
+}
+
+static void sl2312_nand_select_chip(struct mtd_info *mtd, int chip)
+{
+ //struct nand_chip *this = mtd->priv;
+
+ switch(chip) {
+ case -1:
+ CHIP_EN = NFLASH_CHIP0_EN;
+ break;
+ case 0:
+ CHIP_EN = NFLASH_CHIP0_EN;
+ break;
+ case 1:
+ CHIP_EN = NFLASH_CHIP1_EN;
+ break;
+ default:
+ CHIP_EN = NFLASH_CHIP0_EN;
+ break;
+ }
+}
+
+/**
+ * nand_default_block_markbad - [DEFAULT] mark a block bad
+ * @mtd: MTD device structure
+ * @ofs: offset from device start
+ *
+ * This is the default implementation, which can be overridden by
+ * a hardware specific driver.
+*/
+static int sl2312_nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct nand_chip *this = mtd->priv;
+ u_char buf[2] = {0, 0};
+ size_t retlen;
+ int block;
+
+ /* Get block number */
+ block = ((int) ofs) >> this->bbt_erase_shift;
+ this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
+
+ /* Do we have a flash based bad block table ? */
+ if (this->options & NAND_USE_FLASH_BBT)
+ return nand_update_bbt (mtd, ofs);
+
+ /* We write two bytes, so we dont have to mess with 16 bit access */
+ ofs += mtd->oobsize + (this->badblockpos & ~0x01);
+ return sl2312_nand_write_oob (mtd, ofs , 2, &retlen, buf);
+}
+
+/* Appropriate chip should already be selected */
+static int sl2312_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)//(struct mtd_info *mtd, unsigned long page, )
+{
+ u_char *buf, *oobbuf;
+ size_t retlen;
+ unsigned long page, chipnr;
+ struct nand_chip *this = mtd->priv;
+
+ if (getchip) {
+ page = (int)(ofs >> this->page_shift);
+ chipnr = (int)(ofs >> this->chip_shift);
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd, FL_READING, NULL);
+ /* Select the NAND device */
+ this->select_chip(mtd, chipnr);
+ } else
+ page = (int) ofs;
+
+ buf = kmalloc (mtd->oobblock,GFP_KERNEL);
+ oobbuf = kmalloc (mtd->oobsize,GFP_KERNEL);
+
+ if ((!buf)||(!oobbuf)) {
+ printk ("sl2312_nand_block_bad : Unable to allocate SL2312 NAND MTD device structure.\n");
+
+ }
+
+ sl2312_nand_read_ecc (mtd, page, mtd->oobblock , &retlen, buf, oobbuf, NULL);
+
+
+ if(((mtd->oobblock < 528)&&(oobbuf[5] != 0xff))||((mtd->oobblock > 528)&&(oobbuf[0] != 0xff)))
+ {
+ kfree(buf);
+ kfree(oobbuf);
+ return 1;
+ }
+
+ kfree(buf);
+ kfree(oobbuf);
+ return 0;
+}
+
+/*
+* Use NAND read ECC
+*/
+static int sl2312_nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
+{
+ return sl2312_nand_read_ecc (mtd, from, len, retlen, buf, NULL, NULL);
+}
+
+/*
+ * NAND read with ECC
+ */
+static int sl2312_nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
+ size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel)
+{
+ int j, col, page, opcode, i;
+ int end=0;//, ecc=0;//, end_page=0;
+ int erase_state = 0;
+ int read = 0, oob = 0, ecc_failed = 0;//, ecc_status = 0
+ struct nand_chip *this = mtd->priv;
+ u_char *data_poi, *oob_data = oob_buf;
+ //u_char ecc_calc[6];
+ //u_char ecc_code[6];
+ int eccmode;
+ int *oob_config;
+
+
+
+ // use chip default if zero
+ if (oobsel == NULL)
+ oobsel = &mtd->oobinfo;
+
+ eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
+ oob_config = oobsel->eccpos;
+
+ DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+
+ /* Do not allow reads past end of device */
+ if ((from + len) > mtd->size) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n");
+ *retlen = 0;
+ return -EINVAL;
+ }
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd ,FL_READING, &erase_state);
+
+ /* Select the NAND device */
+ this->select_chip(mtd, 0);
+
+ /* First we calculate the starting page */
+ page = from >> this->page_shift;
+
+ //end_page = mtd->oobblock + mtd->oobsize;
+ end = mtd->oobblock;
+ //ecc = mtd->eccsize;
+ /* Get raw starting column */
+ col = (from & (mtd->oobblock - 1));
+
+
+ /* Send the read command */
+ //this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
+
+ /* Loop until all data read */
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ while (read < len) {
+
+ //udelay(1200);
+ /* If we have consequent page reads, apply delay or wait for ready/busy pin */
+ if (read) {
+ if (!this->dev_ready)
+ udelay (this->chip_delay);
+ else
+ while (!this->dev_ready(mtd));
+ }
+
+ /*
+ * If the read is not page aligned, we have to read into data buffer
+ * due to ecc, else we read into return buffer direct
+ */
+ if (!col && (len - read) >= end)
+ data_poi = &buf[read];
+ else
+ data_poi = this->data_buf;
+
+ /* get oob area, if we have no oob buffer from fs-driver */
+ if (!oob_buf) {
+ oob_data = &this->data_buf[end];
+ oob = 0;
+ }
+
+ j = 0;
+ switch (eccmode) {
+ case NAND_ECC_NONE: { /* No ECC, Read in a page */
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ break;
+ }
+
+ case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */
+ break;
+
+ case NAND_ECC_HW3_256: /* Hardware ECC 3 byte /256 byte data: Read in first 256 byte, get ecc, */
+ break;
+
+ case NAND_ECC_HW3_512:
+ case NAND_ECC_HW6_512: /* Hardware ECC 3/6 byte / 512 byte data : Read in a page */
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x80000001); //set 31b = 0
+ break;
+
+ default:
+ printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0);
+ //BUG();
+ }//end switch
+
+ for(i=0;i<end;i++)
+ {
+ //udelay(7);
+ data_poi[i] = FLASH_READ_DATA(page*mtd->oobblock +i);
+ }
+ /* read oobdata */
+ for (i = 0; i < mtd->oobsize; i++)
+ {
+ //udelay(7);
+ oob_data[oob + i] = FLASH_READ_DATA(page*mtd->oobblock +end+i);
+ }
+
+ /* Skip ECC, if not active */
+ if (eccmode == NAND_ECC_NONE)
+ goto readdata;
+
+ // compare ecc and correct data
+
+ opcode=FLASH_READ_REG(NFLASH_ECC_STATUS);
+ while(!(opcode&0x80000000)) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ECC_STATUS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+ for(j=0;j<(end/512);j++)
+ {//for 2k page
+
+ opcode = 0x00000000|oob_data[mtd->oobsize-3-4*j]<<16|oob_data[mtd->oobsize-2-4*j]<<8|oob_data[mtd->oobsize-1-4*j];
+
+ //opcode=FLASH_READ_REG(NFLASH_ECC_CODE_GEN0+(j*4));
+
+ FLASH_WRITE_REG(NFLASH_ECC_OOB, opcode);
+ opcode = 0x00000000|(j<<8); //select ECC code generation 0
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, opcode); //???
+
+ opcode=FLASH_READ_REG(NFLASH_ECC_STATUS);
+ if((opcode&0x00000003)==0x03)
+ {
+ printk (KERN_WARNING "\nPageRead Uncorrectable error !!\n");
+ ecc_failed++;
+ }
+ else if((opcode&0x00000003)==0x01)
+ {
+ printk (KERN_WARNING "\nPageRead One bit data error !!");
+ // correct data
+ if((data_poi[(opcode&0xff80)>>7]>>((opcode&0x38)>>3))%1)
+ data_poi[(opcode&0xff80)>>7] &= ~(1<<((opcode&0x38)>>3));
+ else
+ data_poi[(opcode&0xff80)>>7] |= (1<<((opcode&0x38)>>3));
+
+ }
+ else if((opcode&0x00000003)==0x02)
+ {
+ printk (KERN_WARNING "\nPageRead One bit ECC error !!\n");
+ }
+ else if((opcode&0x00000003)==0x00)
+ {
+
+ }
+
+ }//for 2k page
+readdata:
+ if (col || (len - read) < end) {
+ for (j = col; j < end && read < len; j++)
+ buf[read++] = data_poi[j];
+ } else
+ read += mtd->oobblock;
+ /* For subsequent reads align to page boundary. */
+ col = 0;
+ /* Increment page address */
+ page++;
+ schedule();
+ }
+ /* De-select the NAND device */
+ //this->select_chip(mtd, -1);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_INDIRECT);
+ /* Wake up anyone waiting on the device */
+ spin_lock_bh (&this->chip_lock);
+ this->state = FL_READY;
+ wake_up (&this->wq);
+ spin_unlock_bh (&this->chip_lock);
+
+ /*
+ * Return success, if no ECC failures, else -EIO
+ * fs driver will take care of that, because
+ * retlen == desired len and result == -EIO
+ */
+ *retlen = read;
+ return ecc_failed ? -EIO : 0;
+}
+
+/*
+ * Wait for command done. This applies to erase and program only
+ * Erase can take up to 400ms and program up to 20ms according to
+ * general NAND and SmartMedia specs
+ *
+*/
+static int sl2312_nand_waitfunc(struct mtd_info *mtd, struct nand_chip *this, int state)
+{
+ unsigned long timeo = jiffies;
+ int status, opcode;
+
+ if (state == FL_ERASING)
+ timeo += (HZ * 400) / 1000;
+ else
+ timeo += (HZ * 20) / 1000;
+
+ spin_lock_bh (&this->chip_lock);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000); //set 31b = 0
+ FLASH_WRITE_REG(NFLASH_COUNT, 0x007f000070); //set only command no address and two data
+
+ FLASH_WRITE_REG(NFLASH_CMD_ADDR, 0x00000070); //write read status command
+
+
+ opcode = 0x80002000|DWIDTH|CHIP_EN; //set start bit & 8bits read command
+ FLASH_WRITE_REG(NFLASH_ACCESS, opcode);
+
+ while(opcode&0x80000000) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ACCESS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+
+ while (time_before(jiffies, timeo)) {
+ /* Check, if we were interrupted */
+ if (this->state != state) {
+ spin_unlock_bh (&this->chip_lock);
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ return 0;
+ }
+ if (this->dev_ready) {
+ if (this->dev_ready(mtd))
+ break;
+ }
+ if (FLASH_READ_REG(NFLASH_DATA) & 0x40)
+ break;
+
+ spin_unlock_bh (&this->chip_lock);
+ yield ();
+ spin_lock_bh (&this->chip_lock);
+ }
+ status = FLASH_READ_REG(NFLASH_DATA)&0xff;
+ spin_unlock_bh (&this->chip_lock);
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+ return status;
+}
+
+static int sl2312_nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
+{
+ int i, col, page, j=0;
+ //int erase_state = 0;
+ struct nand_chip *this = mtd->priv;
+ u_char *databuf, *oobbuf;
+
+ databuf = &this->data_buf[0];
+ oobbuf = &this->data_buf[mtd->oobblock];
+ for (i = 0; i < mtd->oobsize; i++)
+ oobbuf[i] = 0xff;
+
+ DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+
+ /* Shift to get page */
+ page = ((int) from) >> this->page_shift;
+
+ /* Mask to get column */
+ col = from & (mtd->oobsize-1); //0x0f;
+
+ /* Initialize return length value */
+ *retlen = 0;
+ sl2312_nand_read_ecc (mtd, page, mtd->oobblock , retlen, databuf, oobbuf, NULL);
+ for(i=col,j=0;i<mtd->oobsize||i<(col+len);i++,j++)
+ buf[j] = oobbuf[i];
+
+ *retlen = j ;
+ return 0;
+}
+
+#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0
+/*
+* Use NAND write ECC
+*/
+static int sl2312_nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
+{
+ return (sl2312_nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL));
+}
+
+/*
+ * NAND write with ECC
+ */
+static int sl2312_nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
+ size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel)
+{
+ int page, ret = 0, oob = 0, written = 0;
+ struct nand_chip *this = mtd->priv;
+
+ DEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+
+
+ /* Do not allow write past end of device */
+ if ((to + len) > mtd->size) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n");
+ return -EINVAL;
+ }
+
+ /* reject writes, which are not page aligned */
+ if (NOTALIGNED (to) || NOTALIGNED(len)) {
+ printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
+ return -EINVAL;
+ }
+
+ // if oobsel is NULL, use chip defaults
+ if (oobsel == NULL)
+ oobsel = &mtd->oobinfo;
+
+ /* Shift to get page */
+ page = ((int) to) >> this->page_shift;
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd, FL_WRITING, NULL);
+
+ /* Select the NAND device */
+ this->select_chip(mtd, 0);
+
+ /* Check the WP bit */
+ if (!(sl2312_device_ready(mtd) & 0x80)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Device is write protected!!!\n");
+ ret = -EIO;
+ goto out;
+ }
+
+ /* Loop until all data is written */
+ while (written < len) {
+ //udelay(100);
+ int cnt = mtd->oobblock;
+ this->data_poi = (u_char*) &buf[written];
+ /* We use the same function for write and writev */
+ if (eccbuf) {
+ ret = sl2312_nand_write_page (mtd, this, page, &eccbuf[oob], oobsel);
+ oob += mtd->oobsize;
+ } else
+ ret = sl2312_nand_write_page (mtd, this, page, NULL, oobsel);
+
+ if (ret)
+ goto out;
+
+ /* Update written bytes count */
+ written += cnt;
+ /* Increment page address */
+ page++;
+ }
+
+out:
+ /* De-select the NAND device */
+ //this->select_chip(mtd, -1);
+
+ /* Wake up anyone waiting on the device */
+ spin_lock_bh (&this->chip_lock);
+ this->state = FL_READY;
+ wake_up (&this->wq);
+ spin_unlock_bh (&this->chip_lock);
+
+ *retlen = written;
+ return ret;
+}
+
+/*
+ * Nand_page_program function is used for write and writev !
+ * This function will always program a full page of data
+ * If you call it with a non page aligned buffer, you're lost :)
+ */
+static int sl2312_nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, struct nand_oobinfo *oobsel)
+{
+ int i, j, status, opcode;
+ u_char ecc_code[16], *oob_data;
+ int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
+ //int *oob_config = oobsel->eccpos;
+
+ /* pad oob area, if we have no oob buffer from fs-driver */
+ if (!oob_buf) {
+ oob_data = &this->data_buf[mtd->oobblock];
+ for (i = 0; i < mtd->oobsize; i++)
+ oob_data[i] = 0xff;
+ } else
+ oob_data = oob_buf;
+
+ /* Send command to begin auto page programming */
+
+ memset(oob_data,0xff,mtd->oobsize);
+ /* Write out complete page of data, take care of eccmode */
+ switch (eccmode) {
+ /* No ecc and software ecc 3/256, write all */
+ case NAND_ECC_NONE:
+ printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ break;
+ case NAND_ECC_SOFT:
+ break;
+
+ /* Hardware ecc 3 byte / 256 data, write first half, get ecc, then second, if 512 byte pagesize */
+ case NAND_ECC_HW3_256:
+ break;
+
+ /* Hardware ecc 3 byte / 512 byte data, write full page */
+ case NAND_ECC_HW3_512:
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x80000001); //set 31b = 0
+
+ /* Hardware ecc 6 byte / 512 byte data, write full page */
+ case NAND_ECC_HW6_512:
+ break;
+
+ default:
+ printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ //BUG();
+ }
+
+ FLASH_WRITE_REG(NFLASH_ACCESS, NFLASH_DIRECT);
+
+ for(i=0;i<mtd->oobblock;i++)
+ {
+ //udelay(5);
+ FLASH_WRITE_DATA((page*mtd->oobblock)+i,this->data_poi[i]);
+ }
+ ///////////////
+ if(eccmode!=NAND_ECC_NONE)
+ {
+ opcode=FLASH_READ_REG(NFLASH_ECC_STATUS);
+ while(!(opcode&0x80000000)) //polling flash access 31b
+ {
+ opcode=FLASH_READ_REG(NFLASH_ECC_STATUS);
+ //sl2312_flash_delay();
+ schedule();
+ }
+
+
+ for(i=0;i<(mtd->oobblock/512);i++)
+ {
+ opcode=FLASH_READ_REG(NFLASH_ECC_CODE_GEN0+(i*4));
+
+ for(j=3;j>0;j--)
+ oob_data[(mtd->oobsize-j-(i*4))] = (opcode<<((4-j)*8)) >>24;
+
+ for(j=0;j<4;j++)
+ {
+ ecc_code[15-i*4] = opcode;
+ ecc_code[15-i*4-1] = opcode>>8;
+ ecc_code[15-i*4-2] = opcode>>16;
+ }
+ }
+
+ //disable ecc
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x00000000);
+
+ /* Write out OOB data */
+ for(i=0;i<mtd->oobsize;i++)
+ {
+ //udelay(5);
+ FLASH_WRITE_DATA((page*mtd->oobblock)+mtd->oobblock+i,oob_data[i]);
+ }
+ }
+ else
+ {
+ for(i=0;i<mtd->oobsize;i++)
+ {
+ //udelay(5);
+ FLASH_WRITE_DATA((page*mtd->oobblock)+mtd->oobblock+i,0xff);
+ }
+ }
+
+
+ /* call wait ready function */
+ status = this->waitfunc (mtd, this, FL_WRITING);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ /* See if device thinks it succeeded */
+ if (status & 0x01) {
+ DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page);
+ FLASH_WRITE_REG(NFLASH_ECC_CONTROL, 0x0); //set 31b = 0
+ return -EIO;
+ }
+
+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+ /*
+ * The NAND device assumes that it is always writing to
+ * a cleanly erased page. Hence, it performs its internal
+ * write verification only on bits that transitioned from
+ * 1 to 0. The device does NOT verify the whole page on a
+ * byte by byte basis. It is possible that the page was
+ * not completely erased or the page is becoming unusable
+ * due to wear. The read with ECC would catch the error
+ * later when the ECC page check fails, but we would rather
+ * catch it early in the page write stage. Better to write
+ * no data than invalid data.
+ */
+
+ /* Send command to read back the page */
+ this->cmdfunc (mtd, NAND_CMD_READ0, 0, page);
+ /* Loop through and verify the data */
+ if (this->verify_buf(mtd, this->data_poi, mtd->oobblock)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
+ return -EIO;
+ }
+
+ /* check, if we have a fs-supplied oob-buffer */
+ if (oob_buf) {
+ if (this->verify_buf(mtd, oob_data, mtd->oobsize)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
+ return -EIO;
+ }
+ } else {
+ if (eccmode != NAND_ECC_NONE) {
+ int ecc_bytes = 0;
+
+ switch (this->eccmode) {
+ case NAND_ECC_SOFT:
+ case NAND_ECC_HW3_256: ecc_bytes = (mtd->oobblock == 512) ? 6 : 3; break;
+ case NAND_ECC_HW3_512: ecc_bytes = 3; break;
+ case NAND_ECC_HW6_512: ecc_bytes = 6; break;
+ }
+
+
+
+ for(i=0;i < (mtd->oobblock+mtd->oobsize);i++)
+ {
+ if(i>=mtd->oobblock)
+ oob_data[i-mtd->oobblock] = FLASH_READ_DATA((page*mtd->oobblock) +i);
+ else
+ oob_data[0] = FLASH_READ_DATA((page*mtd->oobblock) +i);
+ }
+
+ if(this->eccmode == NAND_ECC_HW3_512)
+ {
+ for(i=0;i<(mtd->oobblock/512);i++)
+ {
+ for(j=0;j<3;j++)
+ {
+ if (oob_data[mtd->oobsize-1-j-4*i] != ecc_code[15-j-4*i]) {
+ DEBUG (MTD_DEBUG_LEVEL0,
+ "%s: Failed ECC write "
+ "verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i);
+ return -EIO;
+ }
+ }
+ }
+ }
+ }//eccmode != NAND_ECC_NONE
+ }
+ /*
+ * Terminate the read command. This is faster than sending a reset command or
+ * applying a 20us delay before issuing the next programm sequence.
+ * This is not a problem for all chips, but I have found a bunch of them.
+ */
+ //this->select_chip(mtd, -1);
+ //this->select_chip(mtd, 0);
+#endif
+
+ return 0;
+}
+
+/*
+ * NAND write with iovec
+ */
+static int sl2312_nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
+ loff_t to, size_t * retlen)
+{
+ return (sl2312_nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, 0));
+}
+
+static int sl2312_nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
+ loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel)
+{
+ int i, page, len, total_len, ret = 0, written = 0;
+ struct nand_chip *this = mtd->priv;
+
+ /* Calculate total length of data */
+ total_len = 0;
+ for (i = 0; i < count; i++)
+ total_len += (int) vecs[i].iov_len;
+
+ DEBUG (MTD_DEBUG_LEVEL3,
+ "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count);
+
+ /* Do not allow write past end of page */
+ if ((to + total_len) > mtd->size) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n");
+ return -EINVAL;
+ }
+
+ /* reject writes, which are not page aligned */
+ if (NOTALIGNED (to) || NOTALIGNED(total_len)) {
+ printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
+ return -EINVAL;
+ }
+
+ // if oobsel is NULL, use chip defaults
+ if (oobsel == NULL)
+ oobsel = &mtd->oobinfo;
+
+ /* Shift to get page */
+ page = ((int) to) >> this->page_shift;
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd, FL_WRITING, NULL);
+
+ /* Select the NAND device */
+ this->select_chip(mtd, 0);
+
+ /* Check the WP bit */
+ if (!(sl2312_device_ready(mtd) & 0x80)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "sl2312_nand_writev_ecc: Device is write protected!!!\n");
+ ret = -EIO;
+ goto out;
+ }
+
+ /* Loop until all iovecs' data has been written */
+ len = 0;
+ while (count) {
+ /*
+ * Check, if the tuple gives us not enough data for a
+ * full page write. Then we can use the iov direct,
+ * else we have to copy into data_buf.
+ */
+ if ((vecs->iov_len - len) >= mtd->oobblock) {
+ this->data_poi = (u_char *) vecs->iov_base;
+ this->data_poi += len;
+ len += mtd->oobblock;
+ /* Check, if we have to switch to the next tuple */
+ if (len >= (int) vecs->iov_len) {
+ vecs++;
+ len = 0;
+ count--;
+ }
+ } else {
+ /*
+ * Read data out of each tuple until we have a full page
+ * to write or we've read all the tuples.
+ */
+ int cnt = 0;
+ while ((cnt < mtd->oobblock) && count) {
+ if (vecs->iov_base != NULL && vecs->iov_len) {
+ this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
+ }
+ /* Check, if we have to switch to the next tuple */
+ if (len >= (int) vecs->iov_len) {
+ vecs++;
+ len = 0;
+ count--;
+ }
+ }
+ this->data_poi = this->data_buf;
+ }
+
+ /* We use the same function for write and writev !) */
+ ret = sl2312_nand_write_page (mtd, this, page, NULL, oobsel);
+ if (ret)
+ goto out;
+
+ /* Update written bytes count */
+ written += mtd->oobblock;;
+
+ /* Increment page address */
+ page++;
+ }
+
+out:
+ /* De-select the NAND device */
+ //this->select_chip(mtd, -1);
+
+ /* Wake up anyone waiting on the device */
+ spin_lock_bh (&this->chip_lock);
+ this->state = FL_READY;
+ wake_up (&this->wq);
+ spin_unlock_bh (&this->chip_lock);
+
+ *retlen = written;
+ return ret;
+}
+
+/*
+static u_char ffchars[] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+};
+*/
+/*
+ * NAND write out-of-band
+ */
+static int sl2312_nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
+{
+ int column, page, status, ret = 0, j=0;
+ struct nand_chip *this = mtd->priv;
+ u_char *databuf, *oobbuf;
+
+
+ databuf = &this->data_buf[0];
+ oobbuf = &this->data_buf[mtd->oobblock];
+ for (j = 0; j < mtd->oobsize; j++)
+ oobbuf[j] = 0xff;
+//#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+// int i;
+//#endif
+
+ DEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+
+ /* Shift to get page */
+ page = ((int) to) >> this->page_shift;
+
+ /* Mask to get column */
+ column = to & 0x1f;
+
+ /* Initialize return length value */
+ *retlen = 0;
+
+ /* Do not allow write past end of page */
+ if ((column + len) > mtd->oobsize) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n");
+ return -EINVAL;
+ }
+
+ /* Grab the lock and see if the device is available */
+ sl2312_nand_get_chip (this, mtd, FL_WRITING, NULL);
+
+ /* Select the NAND device */
+ this->select_chip(mtd, 0);
+
+ /* Reset the chip. Some chips (like the Toshiba TC5832DC found
+ in one of my DiskOnChip 2000 test units) will clear the whole
+ data page too if we don't do this. I have no clue why, but
+ I seem to have 'fixed' it in the doc2000 driver in
+ August 1999. dwmw2. */
+ this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+
+ /* Check the WP bit */
+ if (!(sl2312_device_ready(mtd) & 0x80)) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Device is write protected!!!\n");
+ ret = -EIO;
+ goto out;
+ }
+ /* Write out desired data */
+ this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page);
+
+ sl2312_nand_read_ecc (mtd, page, mtd->oobblock , retlen, databuf, oobbuf, NULL);
+
+ for(j=column;j<(column+len);j++)
+ oobbuf[j] = buf[j-column];
+ sl2312_nand_write_ecc (mtd, page, mtd->oobblock, retlen, databuf, oobbuf, NULL);
+
+ status = this->waitfunc (mtd, this, FL_WRITING);
+
+ /* See if device thinks it succeeded */
+ if (status & 0x01) {
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page);
+ ret = -EIO;
+ goto out;
+ }
+ /* Return happy */
+ *retlen = len;
+
+
+out:
+ /* De-select the NAND device */
+ //this->select_chip(mtd, -1);
+
+ /* Wake up anyone waiting on the device */
+ spin_lock_bh (&this->chip_lock);
+ this->state = FL_READY;
+ wake_up (&this->wq);
+ spin_unlock_bh (&this->chip_lock);
+
+ return ret;
+}
+
+/*
+ * NAND sync
+ */
+static void sl2312_nand_sync (struct mtd_info *mtd)
+{
+ struct nand_chip *this = mtd->priv;
+ DECLARE_WAITQUEUE (wait, current);
+
+ DEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n");
+
+retry:
+ /* Grab the spinlock */
+ spin_lock_bh (&this->chip_lock);
+
+ /* See what's going on */
+ switch (this->state) {
+ case FL_READY:
+ case FL_SYNCING:
+ this->state = FL_SYNCING;
+ spin_unlock_bh (&this->chip_lock);
+ break;
+
+ default:
+ /* Not an idle state */
+ add_wait_queue (&this->wq, &wait);
+ spin_unlock_bh (&this->chip_lock);
+ schedule ();
+
+ remove_wait_queue (&this->wq, &wait);
+ goto retry;
+ }
+
+ /* Lock the device */
+ spin_lock_bh (&this->chip_lock);
+
+ /* Set the device to be ready again */
+ if (this->state == FL_SYNCING) {
+ this->state = FL_READY;
+ wake_up (&this->wq);
+ }
+
+ /* Unlock the device */
+ spin_unlock_bh (&this->chip_lock);
+}
+
+
+/*
+ * Scan for the NAND device
+ */
+int sl2312_nand_scan (struct mtd_info *mtd, int maxchips)
+{
+ int i, j, nand_maf_id, nand_dev_id, busw;
+ struct nand_chip *this = mtd->priv;
+ unsigned char id[4];
+
+ /* Get buswidth to select the correct functions*/
+ busw = this->options & NAND_BUSWIDTH_16;
+
+ /* check for proper chip_delay setup, set 20us if not */
+ if (!this->chip_delay)
+ this->chip_delay = 20;
+
+ /* check, if a user supplied command function given */
+ if (this->cmdfunc == NULL)
+ this->cmdfunc = sl2312_nand_command;
+
+ /* check, if a user supplied wait function given */
+ if (this->waitfunc == NULL)
+ this->waitfunc = sl2312_nand_waitfunc;
+
+ if (!this->select_chip)
+ this->select_chip = sl2312_nand_select_chip;
+ if (!this->write_byte)
+ this->write_byte = sl2312_nand_write_byte; //busw ? nand_write_byte16 : nand_write_byte;
+ if (!this->read_byte)
+ this->read_byte = sl2312_nand_read_byte; //busw ? nand_read_byte16 : nand_read_byte;
+// if (!this->write_word)
+// this->write_word = nand_write_word;
+// if (!this->read_word)
+// this->read_word = nand_read_word;
+// if (!this->block_bad)
+ this->block_bad = sl2312_nand_block_bad; //nand_block_bad;
+ if (!this->block_markbad)
+ this->block_markbad = sl2312_nand_default_block_markbad;
+ if (!this->write_buf)
+ this->write_buf = sl2312_nand_write_buf; //busw ? nand_write_buf16 : nand_write_buf;
+ if (!this->read_buf)
+ this->read_buf = sl2312_nand_read_buf; //busw ? nand_read_buf16 : nand_read_buf;
+ if (!this->verify_buf)
+ this->verify_buf = sl2312_nand_verify_buf; //busw ? nand_verify_buf16 : nand_verify_buf;
+ if (!this->scan_bbt)
+ this->scan_bbt = sl2312_nand_scan_bbt;
+
+ /* Select the device */
+ this->select_chip(mtd, 0);
+
+ /* Read manufacturer and device IDs */
+ nand_read_id(0,id);
+
+ nand_maf_id = id[0];
+ nand_dev_id = id[1];
+
+ /* Print and store flash device information */
+ for (i = 0; nand_flash_ids[i].name != NULL; i++) {
+
+ if (nand_dev_id != nand_flash_ids[i].id)
+ continue;
+
+ if (!mtd->name) mtd->name = nand_flash_ids[i].name;
+ this->chipsize = nand_flash_ids[i].chipsize << 20;
+
+ /* New devices have all the information in additional id bytes */
+ if (!nand_flash_ids[i].pagesize) {
+ int extid;
+
+ /* The 4th id byte is the important one */
+ extid = id[3];
+ /* Calc pagesize */
+ mtd->oobblock = 1024 << (extid & 0x3);
+ extid >>= 2;
+ /* Calc oobsize */
+ mtd->oobsize = (8 << (extid & 0x03)) * (mtd->oobblock / 512);
+ extid >>= 2;
+ /* Calc blocksize. Blocksize is multiples of 64KiB */
+ mtd->erasesize = (64 * 1024) << (extid & 0x03);
+ extid >>= 2;
+ /* Get buswidth information */
+ busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
+
+ } else {
+ /* Old devices have this data hardcoded in the
+ * device id table */
+ mtd->erasesize = nand_flash_ids[i].erasesize;
+ mtd->oobblock = nand_flash_ids[i].pagesize;
+ mtd->oobsize = mtd->oobblock / 32;
+ busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16;
+ }
+
+ /* Check, if buswidth is correct. Hardware drivers should set
+ * this correct ! */
+ if (busw != (this->options & NAND_BUSWIDTH_16)) {
+ printk (KERN_INFO "NAND device: Manufacturer ID:"
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
+ nand_manuf_ids[i].name , mtd->name);
+ printk (KERN_WARNING
+ "NAND bus width %d instead %d bit\n",
+ (this->options & NAND_BUSWIDTH_16) ? 16 : 8,
+ busw ? 16 : 8);
+ this->select_chip(mtd, -1);
+ return 1;
+ }
+
+ /* Calculate the address shift from the page size */
+ this->page_shift = ffs(mtd->oobblock) - 1;
+ this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1;
+ this->chip_shift = ffs(this->chipsize) - 1;
+
+ /* Set the bad block position */
+ this->badblockpos = mtd->oobblock > 512 ?
+ NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
+
+ /* Get chip options, preserve non chip based options */
+ this->options &= ~NAND_CHIPOPTIONS_MSK;
+ this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK;
+ /* Set this as a default. Board drivers can override it, if neccecary */
+ this->options |= NAND_NO_AUTOINCR;
+ /* Check if this is a not a samsung device. Do not clear the options
+ * for chips which are not having an extended id.
+ */
+ if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize)
+ this->options &= ~NAND_SAMSUNG_LP_OPTIONS;
+
+ /* Check for AND chips with 4 page planes */
+ // if (this->options & NAND_4PAGE_ARRAY)
+ // this->erase_cmd = multi_erase_cmd;
+ // else
+ // this->erase_cmd = single_erase_cmd;
+
+ /* Do not replace user supplied command function ! */
+ // if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
+ // this->cmdfunc = nand_command_lp;
+
+ /* Try to identify manufacturer */
+ for (j = 0; nand_manuf_ids[j].id != 0x0; j++) {
+ if (nand_manuf_ids[j].id == nand_maf_id)
+ break;
+ }
+ printk (KERN_INFO "NAND device: Manufacturer ID:"
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
+ nand_manuf_ids[j].name , nand_flash_ids[i].name);
+ break;
+ }
+ /////////////////////////////
+
+ for (i=1; i < maxchips; i++) {
+ this->select_chip(mtd, i);
+
+ /* Send the command for reading device ID */
+ nand_read_id(1,id);
+
+ /* Read manufacturer and device IDs */
+ if (nand_maf_id != id[0] ||
+ nand_dev_id != id[1])
+ break;
+ }
+ if (i > 1)
+ printk(KERN_INFO "%d NAND chips detected\n", i);
+
+ /* Allocate buffers, if neccecary */
+ if (!this->oob_buf) {
+ size_t len;
+ len = mtd->oobsize << (this->phys_erase_shift - this->page_shift);
+ this->oob_buf = kmalloc (len, GFP_KERNEL);
+ if (!this->oob_buf) {
+ printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n");
+ return -ENOMEM;
+ }
+ this->options |= NAND_OOBBUF_ALLOC;
+ }
+
+ if (!this->data_buf) {
+ size_t len;
+ len = mtd->oobblock + mtd->oobsize;
+ this->data_buf = kmalloc (len, GFP_KERNEL);
+ if (!this->data_buf) {
+ if (this->options & NAND_OOBBUF_ALLOC)
+ kfree (this->oob_buf);
+ printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n");
+ return -ENOMEM;
+ }
+ this->options |= NAND_DATABUF_ALLOC;
+ }
+
+ /* Store the number of chips and calc total size for mtd */
+ this->numchips = i;
+ mtd->size = i * this->chipsize;
+ /* Convert chipsize to number of pages per chip -1. */
+ this->pagemask = (this->chipsize >> this->page_shift) - 1;
+ /* Preset the internal oob buffer */
+ memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift));
+
+ /* If no default placement scheme is given, select an
+ * appropriate one */
+ if (!this->autooob) {
+ /* Select the appropriate default oob placement scheme for
+ * placement agnostic filesystems */
+ switch (mtd->oobsize) {
+ case 8:
+ this->autooob = &nand_oob_8;
+ break;
+ case 16:
+ this->autooob = &nand_oob_16;
+ break;
+ case 64:
+ this->autooob = &nand_oob_64;
+ break;
+ default:
+ printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
+ mtd->oobsize);
+ BUG();
+ }
+ }
+
+ /* The number of bytes available for the filesystem to place fs dependend
+ * oob data */
+ if (this->options & NAND_BUSWIDTH_16) {
+ mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 2);
+ if (this->autooob->eccbytes & 0x01)
+ mtd->oobavail--;
+ } else
+ mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 1);
+
+
+ /*
+ * check ECC mode, default to software
+ * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize
+ * fallback to software ECC
+ */
+ this->eccsize = 256; /* set default eccsize */
+ this->eccbytes = 3;
+
+ switch (this->eccmode) {
+ case NAND_ECC_HW12_2048:
+ if (mtd->oobblock < 2048) {
+ printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n",
+ mtd->oobblock);
+ this->eccmode = NAND_ECC_SOFT;
+ this->calculate_ecc = nand_calculate_ecc;
+ this->correct_data = nand_correct_data;
+ } else
+ this->eccsize = 2048;
+ break;
+
+ case NAND_ECC_HW3_512:
+ case NAND_ECC_HW6_512:
+ case NAND_ECC_HW8_512:
+ if (mtd->oobblock == 256) {
+ printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
+ this->eccmode = NAND_ECC_SOFT;
+ this->calculate_ecc = nand_calculate_ecc;
+ this->correct_data = nand_correct_data;
+ } else
+ this->eccsize = 512; /* set eccsize to 512 */
+ break;
+
+ case NAND_ECC_HW3_256:
+ break;
+
+ case NAND_ECC_NONE:
+ printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n");
+ this->eccmode = NAND_ECC_NONE;
+ break;
+
+ case NAND_ECC_SOFT:
+ this->calculate_ecc = nand_calculate_ecc;
+ this->correct_data = nand_correct_data;
+ break;
+
+ default:
+ printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
+ BUG();
+ }
+
+ /* Check hardware ecc function availability and adjust number of ecc bytes per
+ * calculation step
+ */
+ switch (this->eccmode) {
+ case NAND_ECC_HW12_2048:
+ this->eccbytes += 4;
+ case NAND_ECC_HW8_512:
+ this->eccbytes += 2;
+ case NAND_ECC_HW6_512:
+ this->eccbytes += 3;
+// case NAND_ECC_HW3_512:
+ case NAND_ECC_HW3_256:
+ if (this->calculate_ecc && this->correct_data && this->enable_hwecc)
+ break;
+ printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n");
+ BUG();
+ }
+
+ mtd->eccsize = this->eccsize;
+
+ /* Set the number of read / write steps for one page to ensure ECC generation */
+ switch (this->eccmode) {
+ case NAND_ECC_HW12_2048:
+ this->eccsteps = mtd->oobblock / 2048;
+ break;
+ case NAND_ECC_HW3_512:
+ case NAND_ECC_HW6_512:
+ case NAND_ECC_HW8_512:
+ this->eccsteps = mtd->oobblock / 512;
+ break;
+ case NAND_ECC_HW3_256:
+ case NAND_ECC_SOFT:
+ this->eccsteps = mtd->oobblock / 256;
+ break;
+
+ case NAND_ECC_NONE:
+ this->eccsteps = 1;
+ break;
+ }
+
+ /* Initialize state, waitqueue and spinlock */
+ this->state = FL_READY;
+ init_waitqueue_head (&this->wq);
+ spin_lock_init (&this->chip_lock);
+
+ /* De-select the device */
+ this->select_chip(mtd, 0);
+
+ /* Print warning message for no device */
+ if (!mtd->size) {
+ printk (KERN_WARNING "No NAND device found!!!\n");
+ return 1;
+ }
+
+ /* Fill in remaining MTD driver data */
+ mtd->type = MTD_NANDFLASH;
+ mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC;
+ mtd->ecctype = MTD_ECC_SW;
+ mtd->erase = sl2312_nand_erase;
+ mtd->point = NULL;
+ mtd->unpoint = NULL;
+ mtd->read = sl2312_nand_read;
+ mtd->write = sl2312_nand_write;
+ mtd->read_ecc = sl2312_nand_read_ecc;
+ mtd->write_ecc = sl2312_nand_write_ecc;
+ mtd->read_oob = sl2312_nand_read_oob;
+ mtd->write_oob = sl2312_nand_write_oob;
+ mtd->readv = NULL;
+ mtd->writev = sl2312_nand_writev;
+ mtd->writev_ecc = sl2312_nand_writev_ecc;
+ mtd->sync = sl2312_nand_sync;
+ mtd->lock = NULL;
+ mtd->unlock = NULL;
+ mtd->suspend = NULL;
+ mtd->resume = NULL;
+ mtd->block_isbad = sl2312_nand_block_isbad;
+ mtd->block_markbad = sl2312_nand_block_markbad;
+
+ /* and make the autooob the default one */
+ memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
+
+ mtd->owner = THIS_MODULE;
+
+ /* Build bad block table */
+ return this->scan_bbt (mtd);
+}
+
+/*End Add function*/
+
+/*
+ * Main initialization routine
+ */
+extern int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
+
+int __init sl2312_mtd_init (void)
+{
+ struct nand_chip *this;
+ int err = 0;
+ struct mtd_partition *parts;
+ int nr_parts = 0;
+ int ret, data, *base;
+
+ printk("NAND MTD Driver Start Init ......\n");
+
+ base = (unsigned int *)(IO_ADDRESS(SL2312_GLOBAL_BASE) + 0x30);
+ data = *base;
+ data&=0xffffffeb;
+ data|=0x3; //disable p & s flash
+ *base = data;
+
+ /* Allocate memory for MTD device structure and private data */
+ sl2312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
+ if (!sl2312_mtd) {
+ printk ("Unable to allocate SL2312 NAND MTD device structure.\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ // sl2312_device_setup();
+
+ /* io is indirect via a register so don't need to ioremap address */
+
+ /* Get pointer to private data */
+ this = (struct nand_chip *) (&sl2312_mtd[1]);
+
+ /* Initialize structures */
+ memset((char *) sl2312_mtd, 0, sizeof(struct mtd_info));
+ memset((char *) this, 0, sizeof(struct nand_chip));
+
+ /* Link the private data with the MTD structure */
+ sl2312_mtd->priv = this;
+ sl2312_mtd->name = "sl2312-nand";
+
+ /* Set address of NAND IO lines */
+ this->IO_ADDR_R = (void __iomem *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE+NFLASH_DATA)); //(unsigned long)&(sl2312_ndfmcptr->dtr);
+ this->IO_ADDR_W = (void __iomem *)IO_ADDRESS((SL2312_FLASH_CTRL_BASE+NFLASH_DATA)); //(unsigned long)&(sl2312_ndfmcptr->dtr);
+ this->read_byte = sl2312_nand_read_byte;
+ this->write_byte = sl2312_nand_write_byte;
+ this->write_buf = sl2312_nand_write_buf;
+ this->read_buf = sl2312_nand_read_buf;
+ this->verify_buf = sl2312_nand_verify_buf;
+ this->select_chip = sl2312_nand_select_chip;
+ this->block_bad = sl2312_nand_block_bad;
+ this->hwcontrol = sl2312_hwcontrol;
+ this->dev_ready = sl2312_device_ready;
+ this->cmdfunc = sl2312_nand_command;
+ this->waitfunc = sl2312_nand_waitfunc;
+ //this->calculate_ecc = sl2312_readecc;
+ this->enable_hwecc = sl2312_enable_hwecc;
+ this->eccmode = NAND_ECC_HW3_512;
+ /*this->eccsize = 512; */
+ /* 20 us command delay time */
+ this->chip_delay = 20;
+
+ this->correct_data = nand_correct_data;
+// this->scan_bbt = sl2312_nand_scan_bbt;
+
+ /* Allocate memory for internal data buffer */
+ this->data_buf = kmalloc (sizeof(u_char) * (sl2312_mtd->oobblock + sl2312_mtd->oobsize), GFP_KERNEL);
+ if (!this->data_buf) {
+ printk ("Unable to allocate NAND data buffer.\n");
+ err = -ENOMEM;
+ goto out_ior;
+ }
+
+ /* Scan to find existance of the device */
+ if (sl2312_nand_scan(sl2312_mtd, 1)) {
+ err = -ENXIO;
+ goto out_ior;
+ }
+
+ /* Register the partitions */
+ parts = sl2312_partitions;
+ nr_parts = sizeof(sl2312_partitions)/sizeof(*parts);
+
+ ret = add_mtd_partitions(sl2312_mtd, sl2312_partitions, nr_parts);
+ /*If we got an error, free all resources.*/
+ if (ret < 0) {
+ del_mtd_partitions(sl2312_mtd);
+ map_destroy(sl2312_mtd);
+ }
+ goto out;
+
+//out_buf:
+// kfree (this->data_buf);
+out_ior:
+out:
+ printk("NAND MTD Driver Init Success ......\n");
+ return err;
+}
+
+module_init(sl2312_mtd_init);
+
+/*
+ * Clean up routine
+ */
+#ifdef MODULE
+static void __exit sl2312_cleanup (void)
+{
+ struct nand_chip *this = (struct nand_chip *) &sl2312_mtd[1];
+
+ /* Unregister partitions */
+ del_mtd_partitions(sl2312_mtd);
+
+ /* Unregister the device */
+ del_mtd_device (sl2312_mtd);
+
+ /* Free internal data buffers */
+ kfree (this->data_buf);
+
+ /* Free the MTD device structure */
+ kfree (sl2312_mtd);
+}
+module_exit(sl2312_cleanup);
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alice Hennessy <ahennessy@mvista.com>");
+MODULE_DESCRIPTION("Glue layer for SmartMediaCard on Toshiba RBsl2312");
--- /dev/null
+++ b/drivers/mtd/nand/sl2312-flash-nand.h
@@ -0,0 +1,24 @@
+#ifndef SL2312_FLASH_NAND_H
+#define SL2312_FLASH_NAND_H
+
+#include <linux/wait.h>
+#include <linux/spinlock.h>
+
+/*Add function*/
+static void nand_read_id(int chip_no,unsigned char *id);
+
+
+
+#define NFLASH_WiDTH8 0x00000000
+#define NFLASH_WiDTH16 0x00000400
+#define NFLASH_WiDTH32 0x00000800
+#define NFLASH_CHIP0_EN 0x00000000 // 16th bit = 0
+#define NFLASH_CHIP1_EN 0x00010000 // 16th bit = 1
+#define NFLASH_DIRECT 0x00004000
+#define NFLASH_INDIRECT 0x00000000
+
+
+#define DWIDTH NFLASH_WiDTH8
+
+
+#endif /* SL2312_FLASH_NAND_H */
--- /dev/null
+++ b/include/linux/mtd/kvctl.h
@@ -0,0 +1,40 @@
+#ifndef KVCTL_H
+#define KVCTL_H
+
+#define VCTL_HEAD_SIZE 8
+#define VCTL_ENTRY_LEN 20
+
+typedef struct
+{
+ char header[4];
+ unsigned int entry_num;
+} vctl_mheader;
+
+typedef struct
+{
+ char header[4];
+ unsigned int size;
+ unsigned int type;
+ char majorver[4];
+ char minorver[4];
+ unsigned char *payload;
+} vctl_entry;
+
+typedef struct
+{
+ unsigned char mac[6];
+ unsigned char vlanid;
+ unsigned char vlanmap;
+} vlaninfo;
+
+#define VCT_VENDORSPEC 0
+#define VCT_BOOTLOADER 1
+#define VCT_KERNEL 2
+#define VCT_VERCTL 3
+#define VCT_CURRCONF 4
+#define VCT_DEFAULTCONF 5
+#define VCT_ROOTFS 6
+#define VCT_APP 7
+#define VCT_VLAN 8
+
+#endif
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -71,3 +71,7 @@ obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
+###### for Storlink Soc #######
+obj-$(CONFIG_MTD_SL2312_CFI) += sl2312-flash-cfi.o
+obj-$(CONFIG_MTD_SL2312_SERIAL_ATMEL) += sl2312-flash-atmel.o
+obj-$(CONFIG_MTD_SL2312_SERIAL_ST) += sl2312-flash-m25p80.o
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