mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-27 21:08:26 +02:00
turned ifxmips mtd driver into a platform device
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9926 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic
parent
19e718d6f1
commit
a69c163d32
@ -72,6 +72,29 @@ static struct platform_device ifxmips_mii[] =
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},
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};
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static struct physmap_flash_data ifxmips_mtd_data = {
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.width = 2,
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};
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static struct resource ifxmips_mtd_resource = {
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.start = IFXMIPS_FLASH_START,
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.end = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device ifxmips_mtd[] =
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{
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{
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.id = 0,
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.name = "ifxmips_mtd",
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.dev = {
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.platform_data = &ifxmips_mtd_data,
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},
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.num_resources = 1,
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.resource = &ifxmips_mtd_resource,
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},
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};
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const char*
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get_system_type (void)
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{
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@ -102,6 +125,7 @@ int __init ifxmips_init_devices(void)
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ifxmips_devs[dev++] = ifxmips_led;
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ifxmips_devs[dev++] = ifxmips_gpio;
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ifxmips_devs[dev++] = ifxmips_mii;
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ifxmips_devs[dev++] = ifxmips_mtd;
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return platform_add_devices(ifxmips_devs, dev);
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}
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@ -23,7 +23,6 @@
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <asm/io.h>
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#include <linux/init.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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@ -31,16 +30,19 @@
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#include <linux/mtd/cfi.h>
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#include <asm/ifxmips/ifxmips.h>
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#include <linux/magic.h>
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#include <linux/platform_device.h>
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#define DRVNAME "ifxmips_mtd"
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static struct map_info
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danube_map = {
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.name = "IFXMIPS_FLASH",
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ifxmips_map = {
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.name = DRVNAME,
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.bankwidth = 2,
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.size = 0x400000,
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};
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static map_word
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danube_read16 (struct map_info * map, unsigned long adr)
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ifxmips_read16 (struct map_info * map, unsigned long adr)
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{
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map_word temp;
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@ -51,14 +53,14 @@ danube_read16 (struct map_info * map, unsigned long adr)
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}
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static void
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danube_write16 (struct map_info *map, map_word d, unsigned long adr)
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ifxmips_write16 (struct map_info *map, map_word d, unsigned long adr)
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{
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adr ^= 2;
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*((__u16 *) (map->virt + adr)) = d.x[0];
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}
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void
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danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
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ifxmips_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
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{
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u8 *p;
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u8 *to_8;
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@ -72,7 +74,7 @@ danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t le
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}
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void
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danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
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ifxmips_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
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{
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u8 *p = (u8*) from;
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u8 *to_8;
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@ -85,7 +87,7 @@ danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_
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}
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static struct mtd_partition
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danube_partitions[4] = {
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ifxmips_partitions[4] = {
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{
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name:"U-Boot",
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offset:0x00000000,
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@ -108,15 +110,12 @@ danube_partitions[4] = {
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},
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};
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#define IFXMIPS_FLASH_START 0x10000000
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#define IFXMIPS_FLASH_MAX 0x2000000
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int
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find_uImage_size (unsigned long start_offset){
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unsigned long temp;
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danube_copy_from(&danube_map, &temp, start_offset + 12, 4);
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printk("kernel size is %ld \n", temp + 0x40);
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ifxmips_copy_from(&ifxmips_map, &temp, start_offset + 12, 4);
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printk(KERN_INFO DRVNAME ": kernel size is %ld \n", temp + 0x40);
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return temp + 0x40;
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}
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@ -124,70 +123,90 @@ int
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detect_squashfs_partition (unsigned long start_offset){
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unsigned long temp;
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danube_copy_from(&danube_map, &temp, start_offset, 4);
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ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 4);
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return (temp == SQUASHFS_MAGIC);
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}
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int __init
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init_danube_mtd (void)
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static int
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ifxmips_mtd_probe (void)
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{
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struct mtd_info *danube_mtd = NULL;
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struct mtd_info *ifxmips_mtd = NULL;
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struct mtd_partition *parts = NULL;
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unsigned long uimage_size;
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writel(0x1d7ff, IFXMIPS_EBU_BUSCON0);
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danube_map.read = danube_read16;
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danube_map.write = danube_write16;
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danube_map.copy_from = danube_copy_from;
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danube_map.copy_to = danube_copy_to;
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ifxmips_map.read = ifxmips_read16;
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ifxmips_map.write = ifxmips_write16;
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ifxmips_map.copy_from = ifxmips_copy_from;
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ifxmips_map.copy_to = ifxmips_copy_to;
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danube_map.phys = IFXMIPS_FLASH_START;
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danube_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
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danube_map.size = IFXMIPS_FLASH_MAX;
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if (!danube_map.virt) {
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printk(KERN_WARNING "Failed to ioremap!\n");
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ifxmips_map.phys = IFXMIPS_FLASH_START;
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ifxmips_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
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ifxmips_map.size = IFXMIPS_FLASH_MAX;
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if (!ifxmips_map.virt) {
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printk(KERN_WARNING DRVNAME ": failed to ioremap!\n");
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return -EIO;
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}
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danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map);
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if (!danube_mtd) {
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iounmap(danube_map.virt);
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printk("probing failed\n");
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ifxmips_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &ifxmips_map);
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if (!ifxmips_mtd) {
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iounmap(ifxmips_map.virt);
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printk(KERN_WARNING DRVNAME ": probing failed\n");
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return -ENXIO;
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}
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danube_mtd->owner = THIS_MODULE;
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ifxmips_mtd->owner = THIS_MODULE;
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uimage_size = find_uImage_size(danube_partitions[2].offset);
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uimage_size = find_uImage_size(ifxmips_partitions[2].offset);
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if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){
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printk("Found a squashfs following the uImage\n");
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if(detect_squashfs_partition(ifxmips_partitions[2].offset + uimage_size)){
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printk(KERN_INFO DRVNAME ": found a squashfs following the uImage\n");
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} else {
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uimage_size &= ~0xffff;
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uimage_size += 0x10000;
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}
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danube_partitions[2].size = uimage_size;
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danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size;
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danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset;
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ifxmips_partitions[2].size = uimage_size;
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ifxmips_partitions[3].offset = ifxmips_partitions[2].offset + ifxmips_partitions[2].size;
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ifxmips_partitions[3].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - ifxmips_partitions[3].offset;
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parts = &danube_partitions[0];
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add_mtd_partitions(danube_mtd, parts, 4);
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parts = &ifxmips_partitions[0];
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add_mtd_partitions(ifxmips_mtd, parts, 4);
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printk("Added danube flash with %dMB\n", danube_mtd->size >> 20);
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printk(KERN_INFO DRVNAME ": added ifxmips flash with %dMB\n", ifxmips_mtd->size >> 20);
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return 0;
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}
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static struct
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platform_driver ifxmips_mtd_driver = {
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.probe = ifxmips_mtd_probe,
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.driver = {
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.name = DRVNAME,
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.owner = THIS_MODULE,
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},
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};
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int __init
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init_ifxmips_mtd (void)
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{
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int ret = platform_driver_register(&ifxmips_mtd_driver);
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if (ret)
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printk(KERN_INFO DRVNAME ": error registering platfom driver!");
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return ret;
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}
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static void
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__exit
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cleanup_danube_mtd (void)
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cleanup_ifxmips_mtd (void)
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{
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platform_driver_unregister(&ifxmips_mtd_driver);
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}
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module_init (init_danube_mtd);
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module_exit (cleanup_danube_mtd);
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module_init (init_ifxmips_mtd);
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module_exit (cleanup_ifxmips_mtd);
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MODULE_LICENSE ("GPL");
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MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>");
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@ -30,6 +30,9 @@
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#define IOMEM_RESOURCE_START 0x10000000
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#define IOMEM_RESOURCE_END 0xffffffff
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#define IFXMIPS_FLASH_START 0x10000000
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#define IFXMIPS_FLASH_MAX 0x2000000
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/*------------ ASC1 */
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