diff options
Diffstat (limited to 'target/linux/ar7-2.4/patches/001-flash_map.patch')
| -rw-r--r-- | target/linux/ar7-2.4/patches/001-flash_map.patch | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/target/linux/ar7-2.4/patches/001-flash_map.patch b/target/linux/ar7-2.4/patches/001-flash_map.patch new file mode 100644 index 0000000000..83bc103bef --- /dev/null +++ b/target/linux/ar7-2.4/patches/001-flash_map.patch @@ -0,0 +1,307 @@ +diff -urN linux.old/drivers/mtd/maps/ar7-flash.c linux.dev/drivers/mtd/maps/ar7-flash.c +--- linux.old/drivers/mtd/maps/ar7-flash.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/drivers/mtd/maps/ar7-flash.c 2005-07-22 04:35:26.624453992 +0200 +@@ -0,0 +1,267 @@ ++/* ++ * $Id$ ++ * ++ * Normal mappings of chips in physical memory ++ */ ++ ++#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/config.h> ++#include <linux/mtd/partitions.h> ++#include <linux/squashfs_fs.h> ++ ++#define WINDOW_ADDR CONFIG_MTD_AR7_START ++#define WINDOW_SIZE CONFIG_MTD_AR7_LEN ++#define BUSWIDTH CONFIG_MTD_AR7_BUSWIDTH ++ ++#include <asm/mips-boards/prom.h> ++extern char *prom_getenv(char *name); ++ ++static int create_mtd_partitions(void); ++static void __exit ar7_mtd_cleanup(void); ++ ++#define MAX_NUM_PARTITIONS 5 ++static struct mtd_partition ar7_partinfo[MAX_NUM_PARTITIONS]; ++ ++static struct mtd_info *ar7_mtd_info; ++ ++__u8 ar7_read8(struct map_info *map, unsigned long ofs) ++{ ++ return __raw_readb(map->map_priv_1 + ofs); ++} ++ ++__u16 ar7_read16(struct map_info *map, unsigned long ofs) ++{ ++ return __raw_readw(map->map_priv_1 + ofs); ++} ++ ++__u32 ar7_read32(struct map_info *map, unsigned long ofs) ++{ ++ return __raw_readl(map->map_priv_1 + ofs); ++} ++ ++void ar7_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) ++{ ++ memcpy_fromio(to, map->map_priv_1 + from, len); ++} ++ ++void ar7_write8(struct map_info *map, __u8 d, unsigned long adr) ++{ ++ __raw_writeb(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void ar7_write16(struct map_info *map, __u16 d, unsigned long adr) ++{ ++ __raw_writew(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void ar7_write32(struct map_info *map, __u32 d, unsigned long adr) ++{ ++ __raw_writel(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void ar7_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) ++{ ++ memcpy_toio(map->map_priv_1 + to, from, len); ++} ++ ++struct map_info ar7_map = { ++ name: "Physically mapped flash", ++ size: WINDOW_SIZE, ++ buswidth: BUSWIDTH, ++ read8: ar7_read8, ++ read16: ar7_read16, ++ read32: ar7_read32, ++ copy_from: ar7_copy_from, ++ write8: ar7_write8, ++ write16: ar7_write16, ++ write32: ar7_write32, ++ copy_to: ar7_copy_to ++}; ++ ++int __init ar7_mtd_init(void) ++{ ++ int partitions; ++ ++ printk(KERN_NOTICE "ar7 flash device: 0x%lx at 0x%lx.\n", (unsigned long)WINDOW_SIZE, (unsigned long)WINDOW_ADDR); ++ ar7_map.map_priv_1 = (unsigned long)ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); ++ ++ if (!ar7_map.map_priv_1) { ++ printk("Failed to ioremap\n"); ++ return -EIO; ++ } ++ ++ ar7_mtd_info = do_map_probe("cfi_probe", &ar7_map); ++ if (!ar7_mtd_info) ++ { ++ ar7_mtd_cleanup(); ++ return -ENXIO; ++ } ++ ++ ar7_mtd_info->module = THIS_MODULE; ++ ++ if (!(partitions = create_mtd_partitions())) ++ add_mtd_device(ar7_mtd_info); ++ else ++ add_mtd_partitions(ar7_mtd_info, ar7_partinfo, partitions); ++ ++ return 0; ++} ++ ++static char *strdup(char *str) ++{ ++ int n = strlen(str)+1; ++ char *s = kmalloc(n, GFP_KERNEL); ++ if (!s) return NULL; ++ return strcpy(s, str); ++} ++ ++ ++static int create_mtd_partitions(void) ++{ ++ unsigned int offset; ++ unsigned int size; ++ unsigned int found = 0; ++ unsigned int p = 0; ++ unsigned char *flash_base; ++ unsigned char *flash_end; ++ char *env_ptr; ++ char *base_ptr; ++ char *end_ptr; ++ unsigned int adam2_size = 0x20000; ++ unsigned int config_offset = WINDOW_SIZE; ++ unsigned int rootfs_start = 0xe0000; ++ ++ printk("Parsing ADAM2 partition map...\n"); ++ ++ do { ++ char env_name[20]; ++ ++ /* get base and end addresses of flash file system from environment */ ++ sprintf(env_name, "mtd%1u", p); ++ printk("Looking for mtd device :%s:\n", env_name); ++ ++ env_ptr = prom_getenv(env_name); ++ if(env_ptr == NULL) { ++ /* No more partitions to find */ ++ break; ++ } ++ ++ /* Extract the start and stop addresses of the partition */ ++ base_ptr = strtok(env_ptr, ","); ++ end_ptr = strtok(NULL, ","); ++ if ((base_ptr == NULL) || (end_ptr == NULL)) { ++ printk("ADAM2 partition error: Invalid %s start,end.\n", env_name); ++ break; ++ } ++ ++ flash_base = (unsigned char*) simple_strtol(base_ptr, NULL, 0); ++ flash_end = (unsigned char*) simple_strtol(end_ptr, NULL, 0); ++ if((!flash_base) || (!flash_end)) { ++ printk("ADAM2 partition error: Invalid %s start,end.\n", env_name); ++ break; ++ } ++ ++ offset = virt_to_bus(flash_base) - WINDOW_ADDR; ++ size = flash_end - flash_base; ++ printk("Found a %s image (0x%x), with size (0x%x).\n",env_name, offset, size); ++ ++ ++ if (offset == 0) { ++ printk("Assuming adam2 size of 0x%x\n", size); ++ adam2_size = size; // boot loader ++ } else if (offset > 0x120000) { ++ if (config_offset > offset) ++ config_offset = offset; // reserved at the end of the flash chip ++ } else if (offset > 0x30000) { ++ printk("Assuming default rootfs offset of 0x%x\n", offset); ++ rootfs_start = offset; // probably root fs ++ } ++ ++ p++; ++ } while (p < MAX_NUM_PARTITIONS); ++ ++ p = 0; ++ ++ ar7_partinfo[p].name = strdup("adam2"); ++ ar7_partinfo[p].offset = 0; ++ ar7_partinfo[p].size = adam2_size; ++ ar7_partinfo[p++].mask_flags = 0; ++ ++ ar7_partinfo[p].name = strdup("linux"); ++ ar7_partinfo[p].offset = adam2_size; ++ ar7_partinfo[p].size = config_offset - adam2_size; ++ ar7_partinfo[p++].mask_flags = 0; ++ ++ if (ar7_read32(&ar7_map, adam2_size) == 0xfeedfa42) { ++ rootfs_start = ar7_read32(&ar7_map, adam2_size + 4) + adam2_size + 28; ++ printk("Setting new rootfs offset to %08x\n", rootfs_start); ++ } ++ ++ ar7_partinfo[p].name = strdup("rootfs"); ++ ar7_partinfo[p].offset = rootfs_start; ++ ar7_partinfo[p].size = config_offset - rootfs_start; ++ ++ ar7_partinfo[p++].mask_flags = 0; ++ ++ ar7_partinfo[p].name = strdup("config"); ++ ar7_partinfo[p].offset = config_offset; ++ ar7_partinfo[p].size = WINDOW_SIZE - config_offset; ++ ar7_partinfo[p++].mask_flags = 0; ++ ++ if (ar7_read32(&ar7_map, rootfs_start) == SQUASHFS_MAGIC) { ++ int newsize, newoffset; ++ squashfs_super_block sb; ++ ++ ar7_copy_from(&ar7_map, &sb, rootfs_start, sizeof(sb)); ++ printk("Squashfs detected (size = 0x%08x)\n", sb.bytes_used); ++ ++ newoffset = rootfs_start + sb.bytes_used; ++ ++ if ((newoffset % ar7_mtd_info->erasesize) > 0) ++ newoffset += ar7_mtd_info->erasesize - (newoffset % ar7_mtd_info->erasesize); ++ ++ ar7_partinfo[p - 2].size = newoffset - rootfs_start; ++ ++ ar7_partinfo[p].name = strdup("OpenWrt"); ++ ar7_partinfo[p].offset = newoffset; ++ ar7_partinfo[p].size = config_offset - newoffset; ++ ar7_partinfo[p++].mask_flags = 0; ++ } else { ++ printk("Unknown filesystem. Moving rootfs partition to next erase block"); ++ if ((rootfs_start % ar7_mtd_info->erasesize) > 0) { ++ ar7_partinfo[p - 2].offset += ar7_mtd_info->erasesize - (rootfs_start % ar7_mtd_info->erasesize); ++ ar7_partinfo[p - 2].size -= ar7_mtd_info->erasesize - (rootfs_start % ar7_mtd_info->erasesize); ++ } ++ } ++ ++ return p; ++} ++ ++static void __exit ar7_mtd_cleanup(void) ++{ ++ if (ar7_mtd_info) { ++ del_mtd_partitions(ar7_mtd_info); ++ del_mtd_device(ar7_mtd_info); ++ map_destroy(ar7_mtd_info); ++ } ++ ++ if (ar7_map.map_priv_1) { ++ iounmap((void *)ar7_map.map_priv_1); ++ ar7_map.map_priv_1 = 0; ++ } ++} ++ ++module_init(ar7_mtd_init); ++module_exit(ar7_mtd_cleanup); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Felix Fietkau"); ++MODULE_DESCRIPTION("AR7 CFI map driver"); +diff -urN linux.old/drivers/mtd/maps/Config.in linux.dev/drivers/mtd/maps/Config.in +--- linux.old/drivers/mtd/maps/Config.in 2005-07-21 05:36:32.414242296 +0200 ++++ linux.dev/drivers/mtd/maps/Config.in 2005-07-21 06:29:04.067118232 +0200 +@@ -48,6 +48,21 @@ + fi + + if [ "$CONFIG_MIPS" = "y" ]; then ++ if [ "$CONFIG_AR7" = "y" ]; then ++ dep_tristate ' Flash chip mapping on Texas Instruments AR7' CONFIG_MTD_AR7 $CONFIG_MTD_CFI $CONFIG_MTD_PARTITIONS ++ dep_bool ' Use defaults for Texas Instruments AR7' CONFIG_MTD_AR7_DEFAULTS $CONFIG_MTD_AR7 ++ if [ "$CONFIG_MTD_AR7" = "y" -o "$CONFIG_MTD_AR7" = "m" ]; then ++ if [ "$CONFIG_MTD_AR7_DEFAULTS" = "y" ]; then ++ define_hex CONFIG_MTD_AR7_START 0x10000000 ++ define_hex CONFIG_MTD_AR7_LEN 0x400000 ++ define_int CONFIG_MTD_AR7_BUSWIDTH 2 ++ else ++ hex ' Physical start address of flash mapping' CONFIG_MTD_AR7_START 0x10000000 ++ hex ' Physical length of flash mapping' CONFIG_MTD_AR7_LEN 0x400000 ++ int ' Bus width in octets' CONFIG_MTD_AR7_BUSWIDTH 2 ++ fi ++ fi ++ fi + dep_tristate ' Pb1000 MTD support' CONFIG_MTD_PB1000 $CONFIG_MIPS_PB1000 + dep_tristate ' Pb1500 MTD support' CONFIG_MTD_PB1500 $CONFIG_MIPS_PB1500 + dep_tristate ' Pb1100 MTD support' CONFIG_MTD_PB1100 $CONFIG_MIPS_PB1100 +diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile +--- linux.old/drivers/mtd/maps/Makefile 2005-07-21 05:36:32.414242296 +0200 ++++ linux.dev/drivers/mtd/maps/Makefile 2005-07-21 06:56:33.265401984 +0200 +@@ -10,6 +10,7 @@ + endif + + # Chip mappings ++obj-$(CONFIG_MTD_AR7) += ar7-flash.o + obj-$(CONFIG_MTD_CDB89712) += cdb89712.o + obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o + obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o |