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-rw-r--r--target/linux/brcm-2.6/patches/002-flash-map.patch241
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
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 01:10:49 +0000