X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/3e0bf90d9e58d95d4a3604505db492d57b2d15a9..015aed13171ff6201459286e15fc5e0686a46907:/target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c diff --git a/target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c b/target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c index df506d7fa..230fceee2 100644 --- a/target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c +++ b/target/linux/adm5120-2.6/files/drivers/mtd/maps/adm5120_mtd.c @@ -3,7 +3,7 @@ * Copyright (C) 2005 Waldemar Brodkorb * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) * - * original functions for finding root filesystem from Mike Baker + * original functions for finding root filesystem from Mike Baker * * 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 @@ -24,10 +24,10 @@ * 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., * 675 Mass Ave, Cambridge, MA 02139, USA. - * + * * Copyright 2001-2003, Broadcom Corporation * All Rights Reserved. - * + * * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS @@ -43,6 +43,7 @@ #include #include #include +#include #ifdef CONFIG_MTD_PARTITIONS #include #endif @@ -57,7 +58,7 @@ extern int parse_myloader_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long origin); -/* Macros for switching flash bank +/* Macros for switching flash bank ADM5120 only support 2MB flash address space so GPIO5 is used as A20 */ @@ -69,7 +70,7 @@ extern int parse_myloader_partitions(struct mtd_info *master, #define TRX_MAGIC 0x30524448 /* "HDR0" */ #define TRX_VERSION 1 #define TRX_MAX_LEN 0x3A0000 -#define TRX_NO_HEADER 1 /* Do not write TRX header */ +#define TRX_NO_HEADER 1 /* Do not write TRX header */ #define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */ #define TRX_MAX_OFFSET 3 @@ -103,7 +104,6 @@ static struct mtd_partition adm5120_cfe_parts[] = { { name: "linux", offset: 0, size: 0, }, { name: "rootfs", offset: 0, size: 0, }, { name: "nvram", offset: 0, size: 0, }, - { name: "OpenWrt", offset: 0, size: 0, }, { name: NULL, }, }; @@ -150,7 +150,7 @@ static void adm5120_map_copy_from(struct map_info *map, void *to, unsigned long flash_switch_bank(FLASH_BOUNDARY); inline_map_copy_from(map, to, from, len); } - + } static int __init @@ -172,7 +172,7 @@ find_cfe_size(struct mtd_info *mtd, size_t size) memset(buf, 0xe5, sizeof(buf)); /* - * Read into buffer + * Read into buffer */ if (mtd->read(mtd, off, sizeof(buf), &len, buf) || len != sizeof(buf)) @@ -199,7 +199,7 @@ find_cfe_size(struct mtd_info *mtd, size_t size) * Copied from mtdblock.c * * Cache stuff... - * + * * Since typical flash erasable sectors are much larger than what Linux's * buffer cache can handle, we must implement read-modify-write on flash * sectors for each block write requests. To avoid over-erasing flash sectors @@ -213,7 +213,7 @@ static void erase_callback(struct erase_info *done) wake_up(wait_q); } -static int erase_write (struct mtd_info *mtd, unsigned long pos, +static int erase_write (struct mtd_info *mtd, unsigned long pos, int len, const char *buf) { struct erase_info erase; @@ -282,7 +282,7 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) memset(&trx, 0xe5, sizeof(trx)); /* - * Read into buffer + * Read into buffer */ if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) || len != sizeof(trx)) @@ -290,9 +290,9 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) /* found a TRX header */ if (le32_to_cpu(trx.magic) == TRX_MAGIC) { - part->offset = le32_to_cpu(trx.offsets[2]) ? : + part->offset = le32_to_cpu(trx.offsets[2]) ? : le32_to_cpu(trx.offsets[1]); - part->size = le32_to_cpu(trx.len); + part->size = le32_to_cpu(trx.len); part->size -= part->offset; part->offset += off; @@ -309,33 +309,17 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) found: if (part->size == 0) return 0; - + if (mtd->read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf)) return 0; - if (*((__u32 *) buf) == SQUASHFS_MAGIC) { - printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used); - - /* Update the squashfs partition size based on the superblock info */ - part->size = sb->bytes_used; - len = part->offset + part->size; - len += (mtd->erasesize - 1); - len &= ~(mtd->erasesize - 1); - part->size = len - part->offset; - } else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) { - printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name); - - /* Move the squashfs outside of the trx */ - part->size = 0; - } else { - printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name); - return 0; - } + /* Move the fs outside of the trx */ + part->size = 0; if (trx.len != part->offset + part->size - off) { /* Update the trx offsets and length */ trx.len = part->offset + part->size - off; - + /* Update the trx crc32 */ for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) { if (mtd->read(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf)) @@ -351,7 +335,7 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) printk("Error accessing the first trx eraseblock\n"); return 0; } - + printk("Updating TRX offsets and length:\n"); printk("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32); printk("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32); @@ -366,7 +350,7 @@ find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) kfree(block); printk("Done\n"); } - + return part->size; } @@ -395,47 +379,21 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size) /* linux (kernel and rootfs) */ if (cfe_size != 384 * 1024) { adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size; - adm5120_cfe_parts[1].size = adm5120_cfe_parts[3].offset - + adm5120_cfe_parts[1].size = adm5120_cfe_parts[3].offset - adm5120_cfe_parts[1].offset; } else { /* do not count the elf loader, which is on one block */ - adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size + + adm5120_cfe_parts[1].offset = adm5120_cfe_parts[0].size + adm5120_cfe_parts[3].size + mtd->erasesize; - adm5120_cfe_parts[1].size = size - - adm5120_cfe_parts[0].size - - (2*adm5120_cfe_parts[3].size) - + adm5120_cfe_parts[1].size = size - + adm5120_cfe_parts[0].size - + (2*adm5120_cfe_parts[3].size) - mtd->erasesize; } /* find and size rootfs */ - if (find_root(mtd,size,&adm5120_cfe_parts[2])==0) { - /* entirely jffs2 */ - adm5120_cfe_parts[4].name = NULL; - adm5120_cfe_parts[2].size = size - adm5120_cfe_parts[2].offset - - adm5120_cfe_parts[3].size; - } else { - /* legacy setup */ - /* calculate leftover flash, and assign it to the jffs2 partition */ - if (cfe_size != 384 * 1024) { - adm5120_cfe_parts[4].offset = adm5120_cfe_parts[2].offset + - adm5120_cfe_parts[2].size; - if ((adm5120_cfe_parts[4].offset % mtd->erasesize) > 0) { - adm5120_cfe_parts[4].offset += mtd->erasesize - - (adm5120_cfe_parts[4].offset % mtd->erasesize); - } - adm5120_cfe_parts[4].size = adm5120_cfe_parts[3].offset - - adm5120_cfe_parts[4].offset; - } else { - adm5120_cfe_parts[4].offset = adm5120_cfe_parts[2].offset + - adm5120_cfe_parts[2].size; - if ((adm5120_cfe_parts[4].offset % mtd->erasesize) > 0) { - adm5120_cfe_parts[4].offset += mtd->erasesize - - (adm5120_cfe_parts[4].offset % mtd->erasesize); - } - adm5120_cfe_parts[4].size = size - adm5120_cfe_parts[3].size - - adm5120_cfe_parts[4].offset; - } - } + find_root(mtd,size,&adm5120_cfe_parts[2]); + adm5120_cfe_parts[2].size = size - adm5120_cfe_parts[2].offset - adm5120_cfe_parts[3].size; return adm5120_cfe_parts; } @@ -449,8 +407,8 @@ int __init init_adm5120_map(void) struct mtd_partition *parts; int i, parsed_nr_parts = 0; #endif - printk("adm5120 : flash init : 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); - adm5120_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); + printk("adm5120 : flash init : 0x%08x 0x%08x\n", WINDOW_ADDR, adm5120_board.flash0_size); + adm5120_map.virt = ioremap_nocache(WINDOW_ADDR, adm5120_board.flash0_size); if (!adm5120_map.virt) { printk("Failed to ioremap\n"); @@ -460,7 +418,7 @@ int __init init_adm5120_map(void) adm5120_map.read = adm5120_map_read; adm5120_map.write = adm5120_map_write; adm5120_map.copy_from = adm5120_map_copy_from; - + if (!(adm5120_mtd = do_map_probe("cfi_probe", &adm5120_map))) { printk("Failed to do_map_probe\n"); iounmap((void *)adm5120_map.virt); @@ -475,14 +433,14 @@ int __init init_adm5120_map(void) #ifdef CONFIG_MTD_PARTITIONS - if (adm5120_info.boot_loader == BOOT_LOADER_CFE) + if (adm5120_boot_loader == BOOT_LOADER_CFE) { printk(KERN_NOTICE "adm5120 : using CFE flash mapping\n"); parts = init_mtd_partitions(adm5120_mtd, size); - + for (i = 0; parts[i].name; i++); ret = add_mtd_partitions(adm5120_mtd, parts, i); - + if (ret) { printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); goto fail; @@ -490,11 +448,11 @@ int __init init_adm5120_map(void) } #endif #ifdef CONFIG_MTD_MYLOADER_PARTS - if (adm5120_info.boot_loader == BOOT_LOADER_MYLOADER) + if (adm5120_boot_loader == BOOT_LOADER_MYLOADER) { printk(KERN_NOTICE "adm5120 : using MyLoader flash mapping\n"); char *part_type; - + if (parsed_nr_parts == 0) { ret = parse_myloader_partitions(adm5120_mtd, &parts, 0);