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Use the rewritten flash map driver, huge thanks nbd !

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4425 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian 2006-08-03 14:43:03 +00:00
parent 65d0d16336
commit 0876cd76ed
1 changed files with 152 additions and 93 deletions
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227
target/linux/brcm63xx-2.6/patches/040-bcm963xx_flashmap.patch
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@ -1,116 +1,126 @@
diff -urN linux-2.6.16.7/drivers/mtd/maps/bcm963xx.c linux-2.6.16.7-brcm63xx/drivers/mtd/maps/bcm963xx.c diff -urN linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c
--- linux-2.6.16.7/drivers/mtd/maps/bcm963xx.c 1970-01-01 01:00:00.000000000 +0100 --- linux-2.6.17/drivers/mtd/maps/bcm963xx-flash.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/bcm963xx.c 2006-07-07 22:00:36.000000000 +0200 +++ linux-2.6.17-brcm63xx/drivers/mtd/maps/bcm963xx-flash.c 2006-08-03 16:29:52.000000000 +0200
@@ -0,0 +1,106 @@ @@ -0,0 +1,116 @@
+/* +/*
+ * A simple flash mapping code for BCM963xx board flash memory + * $Id$
+ * It is simple because it only treats all the flash memory as ROM + * Copyright (C) 2006 Florian Fainelli
+ * It is used with chips/map_rom.c + * Copyright (C) $Date$ $Author$
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* This is the BCM963xx flash map driver, in its actual state it only supports BCM96348 devices
+ * this driver is able to manage both bootloader we found on these boards : CFE and RedBoot
+ *
+ * RedBoot :
+ * - this bootloader allows us to parse partitions and therefore deduce the MTD partition table
+ *
+ * CFE :
+ * - we have to use a "physically mapped flash" defined bellow
+ * + *
+ * Song Wang (songw@broadcom.com)
+ */ + */
+ +
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/io.h> +#include <asm/io.h>
+#include <linux/mtd/mtd.h> +#include <linux/init.h>
+#include <linux/mtd/map.h> +#include <linux/mtd/map.h>
+#include <linux/config.h> +#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+ +
+#include <board.h> +#define WINDOW_ADDR 0x1e400000 /* Real address of the flash */
+#include <bcmTag.h> +#define WINDOW_SIZE 0x800000 /* Size of flash */
+#define VERSION "1.0" +#define BUSWIDTH 2 /* Buswidth */
+ +
+extern PFILE_TAG kerSysImageTagGet(void); +extern int boot_loader_type; /* For RedBoot / CFE detection */
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
+static struct mtd_partition *parsed_parts;
+ +
+static struct mtd_info *mymtd; +static void __exit bcm963xx_mtd_cleanup(void);
+ +
+static map_word brcm_physmap_read16(struct map_info *map, unsigned long ofs) +static struct mtd_info *bcm963xx_mtd_info;
+{
+ map_word val;
+ +
+ val.x[0] = __raw_readw(map->map_priv_1 + ofs); +static struct map_info bcm963xx_map = {
+ + .name = "bcm963xx",
+ return val; + .size = WINDOW_SIZE,
+} + .bankwidth = BUSWIDTH,
+ + .phys = WINDOW_ADDR,
+static void brcm_physmap_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ memcpy_fromio(to, map->map_priv_1 + from, len);
+}
+
+static struct map_info brcm_physmap_map = {
+ .name = "Physically mapped flash",
+ .bankwidth = 2,
+ .read = brcm_physmap_read16,
+ .copy_from = brcm_physmap_copy_from
+}; +};
+ +
+static int __init init_brcm_physmap(void) +static struct mtd_partition bcm963xx_parts[] = {
+ { name: "bootloader", size: 0, offset: 0, mask_flags: MTD_WRITEABLE },
+ { name: "rootfs", size: 0, offset: 0},
+ { name: "jffs2", size: 5 * 0x10000, offset: 57*0x10000}
+};
+
+static int __init bcm963xx_mtd_init(void)
+{ +{
+ PFILE_TAG pTag = NULL; + printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
+ u_int32_t rootfs_addr, kernel_addr; + bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+ FLASH_ADDR_INFO info;
+ +
+ printk("bcm963xx_mtd driver v%s\n", VERSION); + if (!bcm963xx_map.virt) {
+ kerSysFlashAddrInfoGet( &info ); + printk("bcm963xx: Failed to ioremap\n");
+
+ /* Read the flash memory map from flash memory. */
+ if (!(pTag = kerSysImageTagGet())) {
+ printk("Failed to read image tag from flash\n");
+ return -EIO; + return -EIO;
+ } + }
+ +
+ rootfs_addr = (u_int32_t) simple_strtoul(pTag->rootfsAddress, NULL, 10); + simple_map_init(&bcm963xx_map);
+ kernel_addr = (u_int32_t) simple_strtoul(pTag->kernelAddress, NULL, 10);
+ +
+ brcm_physmap_map.size = kernel_addr - rootfs_addr; + bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
+ brcm_physmap_map.map_priv_1 = (unsigned long)rootfs_addr;
+ +
+ if (!brcm_physmap_map.map_priv_1) { + if (bcm963xx_mtd_info) {
+ printk("Wrong rootfs starting address\n"); + bcm963xx_mtd_info->owner = THIS_MODULE;
+ return -EIO; + int parsed_nr_parts = 0;
+ char * part_type;
+
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+ if (parsed_nr_parts == 0) {
+ int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0);
+ if (ret > 0) {
+ part_type = "RedBoot";
+ parsed_nr_parts = ret;
+ } + }
+
+ if (brcm_physmap_map.size <= 0) {
+ printk("Wrong rootfs size\n");
+ return -EIO;
+ } + }
+ +#endif
+ mymtd = do_map_probe("map_rom", &brcm_physmap_map); + add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts);
+ if (mymtd) {
+ mymtd->owner = THIS_MODULE;
+ add_mtd_device(mymtd);
+ +
+ return 0; + return 0;
+ } + }
+ + iounmap(bcm963xx_map.virt);
+ return -ENXIO; + return -ENXIO;
+} +}
+ +
+static void __exit cleanup_brcm_physmap(void) +static void __exit bcm963xx_mtd_cleanup(void)
+{ +{
+ if (mymtd) { + if (bcm963xx_mtd_info) {
+ del_mtd_device(mymtd); + del_mtd_partitions(bcm963xx_mtd_info);
+ map_destroy(mymtd); + map_destroy(bcm963xx_mtd_info);
+ } + }
+ if (brcm_physmap_map.map_priv_1) { +
+ brcm_physmap_map.map_priv_1 = 0; + if (bcm963xx_map.virt) {
+ iounmap(bcm963xx_map.virt);
+ bcm963xx_map.virt = 0;
+ } + }
+} +}
+ +
+module_init(init_brcm_physmap); +module_init(bcm963xx_mtd_init);
+module_exit(cleanup_brcm_physmap); +module_exit(bcm963xx_mtd_cleanup);
+
+ +
+MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Song Wang songw@broadcom.com"); +MODULE_AUTHOR("Florian Fainelli");
+MODULE_DESCRIPTION("Configurable MTD map driver for read-only root file system"); diff -urN linux-2.6.17/drivers/mtd/maps/Kconfig linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig
diff -urN linux-2.6.16.7/drivers/mtd/maps/Kconfig linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Kconfig --- linux-2.6.17/drivers/mtd/maps/Kconfig 2006-06-18 03:49:35.000000000 +0200
--- linux-2.6.16.7/drivers/mtd/maps/Kconfig 2006-04-17 23:53:25.000000000 +0200 +++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Kconfig 2006-08-03 16:32:05.000000000 +0200
+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Kconfig 2006-07-07 22:02:13.000000000 +0200
@@ -224,6 +224,13 @@ @@ -224,6 +224,13 @@
Flash memory access on 4G Systems MTX-1 Board. If you have one of Flash memory access on 4G Systems MTX-1 Board. If you have one of
these boards and would like to use the flash chips on it, say 'Y'. these boards and would like to use the flash chips on it, say 'Y'.
@ -119,17 +129,66 @@ diff -urN linux-2.6.16.7/drivers/mtd/maps/Kconfig linux-2.6.16.7-brcm63xx/driver
+ tristate "BCM963xx Flash device" + tristate "BCM963xx Flash device"
+ depends on MIPS && MIPS_BRCM + depends on MIPS && MIPS_BRCM
+ help + help
+ This driver seems to detect and provide a valid flash map to the system + Flash memory access on BCM963xx boards. Currently only works with
+ of course, it needs checking and testing. + RedBoot, CFE support coming soon.
+ +
config MTD_DILNETPC config MTD_DILNETPC
tristate "CFI Flash device mapped on DIL/Net PC" tristate "CFI Flash device mapped on DIL/Net PC"
depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
diff -urN linux-2.6.16.7/drivers/mtd/maps/Makefile linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Makefile diff -urN linux-2.6.17/drivers/mtd/maps/Makefile linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile
--- linux-2.6.16.7/drivers/mtd/maps/Makefile 2006-04-17 23:53:25.000000000 +0200 --- linux-2.6.17/drivers/mtd/maps/Makefile 2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6.16.7-brcm63xx/drivers/mtd/maps/Makefile 2006-07-07 22:01:29.000000000 +0200 +++ linux-2.6.17-brcm63xx/drivers/mtd/maps/Makefile 2006-08-03 16:32:27.000000000 +0200
@@ -71,3 +71,4 @@ @@ -71,3 +71,4 @@
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
obj-$(CONFIG_MTD_TQM834x) += tqm834x.o obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
+obj-$(CONFIG_MTD_BCM963XX) += bcm963xx.o +obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o
diff -urN linux-2.6.17/drivers/mtd/redboot.c linux-2.6.17-brcm63xx/drivers/mtd/redboot.c
--- linux-2.6.17/drivers/mtd/redboot.c 2006-06-18 03:49:35.000000000 +0200
+++ linux-2.6.17-brcm63xx/drivers/mtd/redboot.c 2006-08-03 16:32:39.000000000 +0200
@@ -39,7 +39,7 @@
return 1;
}
-static int parse_redboot_partitions(struct mtd_info *master,
+int parse_redboot_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
unsigned long fis_origin)
{
@@ -120,11 +120,19 @@
goto out;
}
+ if (!fis_origin) {
+ for (i = 0; i < numslots; i++) {
+ if (!strncmp(buf[i].name, "RedBoot", 8)) {
+ fis_origin = (buf[i].flash_base & (master->size << 1) - 1);
+ }
+ }
+ }
+
for (i = 0; i < numslots; i++) {
struct fis_list *new_fl, **prev;
if (buf[i].name[0] == 0xff)
- continue;
+ break;
if (!redboot_checksum(&buf[i]))
break;
@@ -135,11 +143,10 @@
goto out;
}
new_fl->img = &buf[i];
- if (fis_origin) {
- buf[i].flash_base -= fis_origin;
- } else {
- buf[i].flash_base &= master->size-1;
- }
+ if (fis_origin) {
+ buf[i].flash_base -= fis_origin;
+ }
+ buf[i].flash_base &= (master->size << 1) - 1;
/* I'm sure the JFFS2 code has done me permanent damage.
* I now think the following is _normal_