diff options
| -rw-r--r-- | target/linux/brcm-2.6/patches/002-flash-map.patch | 241 |
1 files changed, 188 insertions, 53 deletions
diff --git a/target/linux/brcm-2.6/patches/002-flash-map.patch b/target/linux/brcm-2.6/patches/002-flash-map.patch index b8aeafa60..a8ed9092c 100644 --- a/target/linux/brcm-2.6/patches/002-flash-map.patch +++ b/target/linux/brcm-2.6/patches/002-flash-map.patch @@ -1,10 +1,11 @@ -diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-flash/drivers/mtd/maps/bcm47xx-flash.c ---- linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/bcm47xx-flash.c 2005-12-19 00:33:31.276241000 +0100 -@@ -0,0 +1,316 @@ +diff -urN linux.old/drivers/mtd/maps/bcm47xx-flash.c linux.dev/drivers/mtd/maps/bcm47xx-flash.c +--- linux.old/drivers/mtd/maps/bcm47xx-flash.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/drivers/mtd/maps/bcm47xx-flash.c 2006-06-23 19:54:06.000000000 +0200 +@@ -0,0 +1,451 @@ +/* -+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) ++ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org> ++ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) + * + * original functions for finding root filesystem from Mike Baker + * @@ -43,18 +44,24 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> -+#include <asm/io.h> ++#include <linux/wait.h> ++#include <linux/config.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#ifdef CONFIG_MTD_PARTITIONS +#include <linux/mtd/partitions.h> +#endif -+#include <linux/config.h> ++#include <linux/squashfs_fs.h> ++#include <linux/jffs2.h> ++#include <linux/crc32.h> ++#include <asm/io.h> + +#include <trxhdr.h> + ++#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) ++#define NVRAM_SPACE 0x8000 +#define WINDOW_ADDR 0x1c000000 -+#define WINDOW_SIZE (0x400000*2) ++#define WINDOW_SIZE 0x800000 +#define BUSWIDTH 2 + +static struct mtd_info *bcm947xx_mtd; @@ -104,13 +111,15 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + unsigned char buf[512]; + int off; + size_t len; -+ int cfe_size_flag; ++ int blocksize; + + trx = (struct trx_header *) buf; + -+ cfe_size_flag=0; ++ blocksize = mtd->erasesize; ++ if (blocksize < 0x10000) ++ blocksize = 0x10000; + -+ for (off = (256*1024); off < size; off += mtd->erasesize) { ++ for (off = (128*1024); off < size; off += blocksize) { + memset(buf, 0xe5, sizeof(buf)); + + /* @@ -122,9 +131,8 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + + /* found a TRX header */ + if (le32_to_cpu(trx->magic) == TRX_MAGIC) { -+ goto done; ++ goto found; + } -+ cfe_size_flag += 1; + } + + printk(KERN_NOTICE @@ -132,42 +140,115 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + mtd->name); + return -1; + -+ done: -+ printk(KERN_NOTICE "bootloader size flag: %d\n", cfe_size_flag); -+ return cfe_size_flag; ++ found: ++ printk(KERN_NOTICE "bootloader size: %d\n", off); ++ return off; ++ ++} ++ ++/* ++ * 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 ++ * and to speed things up, we locally cache a whole flash sector while it is ++ * being written to until a different sector is required. ++ */ ++ ++static void erase_callback(struct erase_info *done) ++{ ++ wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; ++ wake_up(wait_q); ++} ++ ++static int erase_write (struct mtd_info *mtd, unsigned long pos, ++ int len, const char *buf) ++{ ++ struct erase_info erase; ++ DECLARE_WAITQUEUE(wait, current); ++ wait_queue_head_t wait_q; ++ size_t retlen; ++ int ret; ++ ++ /* ++ * First, let's erase the flash block. ++ */ ++ ++ init_waitqueue_head(&wait_q); ++ erase.mtd = mtd; ++ erase.callback = erase_callback; ++ erase.addr = pos; ++ erase.len = len; ++ erase.priv = (u_long)&wait_q; ++ ++ set_current_state(TASK_INTERRUPTIBLE); ++ add_wait_queue(&wait_q, &wait); ++ ++ ret = MTD_ERASE(mtd, &erase); ++ if (ret) { ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&wait_q, &wait); ++ printk (KERN_WARNING "erase of region [0x%lx, 0x%x] " ++ "on \"%s\" failed\n", ++ pos, len, mtd->name); ++ return ret; ++ } ++ ++ schedule(); /* Wait for erase to finish. */ ++ remove_wait_queue(&wait_q, &wait); + ++ /* ++ * Next, writhe data to flash. ++ */ ++ ++ ret = MTD_WRITE (mtd, pos, len, &retlen, buf); ++ if (ret) ++ return ret; ++ if (retlen != len) ++ return -EIO; ++ return 0; +} + ++ ++ ++ +static int __init +find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) +{ -+ struct trx_header *trx; -+ unsigned char buf[512]; -+ int off; ++ struct trx_header trx, *trx2; ++ unsigned char buf[512], *block; ++ int off, blocksize; ++ u32 i, crc = ~0; + size_t len; ++ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf; + -+ trx = (struct trx_header *) buf; ++ blocksize = mtd->erasesize; ++ if (blocksize < 0x10000) ++ blocksize = 0x10000; + -+ for (off = (256*1024); off < size; off += mtd->erasesize) { -+ memset(buf, 0xe5, sizeof(buf)); ++ for (off = (128*1024); off < size; off += blocksize) { ++ memset(&trx, 0xe5, sizeof(trx)); + + /* + * Read into buffer + */ -+ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) || -+ len != sizeof(buf)) ++ if (MTD_READ(mtd, off, sizeof(trx), &len, (char *) &trx) || ++ len != sizeof(trx)) + continue; + + /* found a TRX header */ -+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) { -+ part->offset = le32_to_cpu(trx->offsets[2]) ? : -+ le32_to_cpu(trx->offsets[1]); -+ part->size = le32_to_cpu(trx->len); ++ if (le32_to_cpu(trx.magic) == TRX_MAGIC) { ++ part->offset = le32_to_cpu(trx.offsets[2]) ? : ++ le32_to_cpu(trx.offsets[1]); ++ part->size = le32_to_cpu(trx.len); + + part->size -= part->offset; + part->offset += off; + -+ goto done; ++ goto found; + } + } + @@ -176,39 +257,93 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + mtd->name); + return -1; + -+ done: ++ 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; ++ } ++ ++ 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)) ++ return 0; ++ crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i)); ++ } ++ trx.crc32 = crc; ++ ++ /* read first eraseblock from the trx */ ++ block = kmalloc(mtd->erasesize, GFP_KERNEL); ++ trx2 = (struct trx_header *) block; ++ if (MTD_READ(mtd, off, mtd->erasesize, &len, block) || len != mtd->erasesize) { ++ 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); ++ ++ /* Write updated trx header to the flash */ ++ memcpy(block, &trx, sizeof(trx)); ++ if (mtd->unlock) ++ mtd->unlock(mtd, off, mtd->erasesize); ++ erase_write(mtd, off, mtd->erasesize, block); ++ if (mtd->sync) ++ mtd->sync(mtd); ++ kfree(block); ++ printk("Done\n"); ++ } ++ + return part->size; +} + +struct mtd_partition * __init +init_mtd_partitions(struct mtd_info *mtd, size_t size) +{ ++ int cfe_size; + -+ int cfe_size_flag; -+ -+ /* if cfe_size_flag=0, cfe size is 256 kb, else 384 kb */ -+ cfe_size_flag = find_cfe_size(mtd, size); ++ cfe_size = find_cfe_size(mtd,size); + + /* boot loader */ + bcm947xx_parts[0].offset = 0; -+ if (cfe_size_flag == 0) { -+ bcm947xx_parts[0].size = 1024*256; -+ } else { -+ /* netgear wgt634u has 384 kb bootloader */ -+ bcm947xx_parts[0].size = 1024*384; -+ } ++ bcm947xx_parts[0].size = cfe_size; + + /* nvram */ -+ if (cfe_size_flag == 0) { -+ bcm947xx_parts[3].offset = size - mtd->erasesize; ++ if (cfe_size != 384 * 1024) { ++ bcm947xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize); ++ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize); + } else { + /* nvram (old 128kb config partition on netgear wgt634u) */ + bcm947xx_parts[3].offset = bcm947xx_parts[0].size; ++ bcm947xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize); + } -+ bcm947xx_parts[3].size = mtd->erasesize; + + /* linux (kernel and rootfs) */ -+ if (cfe_size_flag == 0) { ++ if (cfe_size != 384 * 1024) { + bcm947xx_parts[1].offset = bcm947xx_parts[0].size; + bcm947xx_parts[1].size = bcm947xx_parts[3].offset - + bcm947xx_parts[1].offset; @@ -227,11 +362,11 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + /* entirely jffs2 */ + bcm947xx_parts[4].name = NULL; + bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset - -+ bcm947xx_parts[3].size; ++ bcm947xx_parts[3].size; + } else { + /* legacy setup */ + /* calculate leftover flash, and assign it to the jffs2 partition */ -+ if (cfe_size_flag == 0) { ++ if (cfe_size != 384 * 1024) { + bcm947xx_parts[4].offset = bcm947xx_parts[2].offset + + bcm947xx_parts[2].size; + if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) { @@ -318,9 +453,9 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/bcm47xx-flash.c linux-2.6.15-rc5-fla + +module_init(init_bcm947xx_map); +module_exit(cleanup_bcm947xx_map); -diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Kconfig linux-2.6.15-rc5-flash/drivers/mtd/maps/Kconfig ---- linux-2.6.15-rc5/drivers/mtd/maps/Kconfig 2005-12-04 06:10:42.000000000 +0100 -+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/Kconfig 2005-12-18 19:36:11.555087000 +0100 +diff -urN linux.old/drivers/mtd/maps/Kconfig linux.dev/drivers/mtd/maps/Kconfig +--- linux.old/drivers/mtd/maps/Kconfig 2006-06-23 19:13:51.000000000 +0200 ++++ linux.dev/drivers/mtd/maps/Kconfig 2006-06-23 18:47:58.000000000 +0200 @@ -299,6 +299,12 @@ Mapping for the Flaga digital module. If you don't have one, ignore this setting. @@ -334,10 +469,10 @@ diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Kconfig linux-2.6.15-rc5-flash/drive config MTD_BEECH tristate "CFI Flash device mapped on IBM 405LP Beech" depends on MTD_CFI && BEECH -diff -Nur linux-2.6.15-rc5/drivers/mtd/maps/Makefile linux-2.6.15-rc5-flash/drivers/mtd/maps/Makefile ---- linux-2.6.15-rc5/drivers/mtd/maps/Makefile 2005-12-04 06:10:42.000000000 +0100 -+++ linux-2.6.15-rc5-flash/drivers/mtd/maps/Makefile 2005-12-18 19:36:11.555087000 +0100 -@@ -31,6 +31,7 @@ +diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile +--- linux.old/drivers/mtd/maps/Makefile 2006-06-23 19:13:51.000000000 +0200 ++++ linux.dev/drivers/mtd/maps/Makefile 2006-06-23 18:47:58.000000000 +0200 +@@ -30,6 +30,7 @@ obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o |