From 5730eb7752a985301185abf4e091022eea2c7119 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 23 Jun 2006 16:30:30 +0000
Subject: broadcom 2.4: update the trx for jffs2 directly in the flash map
driver
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4055 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
target/linux/brcm-2.4/patches/004-flash.patch | 206 +++++++++++++++++++++-----
1 file changed, 167 insertions(+), 39 deletions(-)
(limited to 'target/linux')
diff --git a/target/linux/brcm-2.4/patches/004-flash.patch b/target/linux/brcm-2.4/patches/004-flash.patch
index 3511091ed..4fbf3da7e 100644
--- a/target/linux/brcm-2.4/patches/004-flash.patch
+++ b/target/linux/brcm-2.4/patches/004-flash.patch
@@ -1,6 +1,6 @@
-diff -Nur linux-2.4.32/drivers/mtd/devices/Config.in linux-2.4.32-flash/drivers/mtd/devices/Config.in
---- linux-2.4.32/drivers/mtd/devices/Config.in 2003-06-13 16:51:34.000000000 +0200
-+++ linux-2.4.32-flash/drivers/mtd/devices/Config.in 2006-03-27 17:10:51.000000000 +0200
+diff -urN linux.old/drivers/mtd/devices/Config.in linux.dev/drivers/mtd/devices/Config.in
+--- linux.old/drivers/mtd/devices/Config.in 2006-06-22 17:35:39.000000000 +0200
++++ linux.dev/drivers/mtd/devices/Config.in 2006-06-21 21:41:24.000000000 +0200
@@ -5,6 +5,7 @@
mainmenu_option next_comment
@@ -9,9 +9,9 @@ diff -Nur linux-2.4.32/drivers/mtd/devices/Config.in linux-2.4.32-flash/drivers/
dep_tristate ' Ramix PMC551 PCI Mezzanine RAM card support' CONFIG_MTD_PMC551 $CONFIG_MTD $CONFIG_PCI
if [ "$CONFIG_MTD_PMC551" = "y" -o "$CONFIG_MTD_PMC551" = "m" ]; then
bool ' PMC551 256M DRAM Bugfix' CONFIG_MTD_PMC551_BUGFIX
-diff -Nur linux-2.4.32/drivers/mtd/devices/Makefile linux-2.4.32-flash/drivers/mtd/devices/Makefile
---- linux-2.4.32/drivers/mtd/devices/Makefile 2002-11-29 00:53:13.000000000 +0100
-+++ linux-2.4.32-flash/drivers/mtd/devices/Makefile 2006-03-27 17:10:51.000000000 +0200
+diff -urN linux.old/drivers/mtd/devices/Makefile linux.dev/drivers/mtd/devices/Makefile
+--- linux.old/drivers/mtd/devices/Makefile 2006-06-22 17:35:39.000000000 +0200
++++ linux.dev/drivers/mtd/devices/Makefile 2006-06-21 21:41:24.000000000 +0200
@@ -3,6 +3,8 @@
#
# $Id: Makefile,v 1.4 2001/06/26 21:10:05 spse Exp $
@@ -29,9 +29,9 @@ diff -Nur linux-2.4.32/drivers/mtd/devices/Makefile linux-2.4.32-flash/drivers/m
obj-$(CONFIG_MTD_DOC1000) += doc1000.o
obj-$(CONFIG_MTD_DOC2000) += doc2000.o
obj-$(CONFIG_MTD_DOC2001) += doc2001.o
-diff -Nur linux-2.4.32/drivers/mtd/devices/sflash.c linux-2.4.32-flash/drivers/mtd/devices/sflash.c
---- linux-2.4.32/drivers/mtd/devices/sflash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.32-flash/drivers/mtd/devices/sflash.c 2006-03-27 17:10:51.000000000 +0200
+diff -urN linux.old/drivers/mtd/devices/sflash.c linux.dev/drivers/mtd/devices/sflash.c
+--- linux.old/drivers/mtd/devices/sflash.c 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/drivers/mtd/devices/sflash.c 2006-06-21 21:41:24.000000000 +0200
@@ -0,0 +1,298 @@
+/*
+ * Broadcom SiliconBackplane chipcommon serial flash interface
@@ -331,10 +331,10 @@ diff -Nur linux-2.4.32/drivers/mtd/devices/sflash.c linux-2.4.32-flash/drivers/m
+
+module_init(sflash_mtd_init);
+module_exit(sflash_mtd_exit);
-diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/drivers/mtd/maps/bcm947xx-flash.c
---- linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.32-flash/drivers/mtd/maps/bcm947xx-flash.c 2006-03-27 17:07:27.000000000 +0200
-@@ -0,0 +1,416 @@
+diff -urN linux.old/drivers/mtd/maps/bcm947xx-flash.c linux.dev/drivers/mtd/maps/bcm947xx-flash.c
+--- linux.old/drivers/mtd/maps/bcm947xx-flash.c 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/drivers/mtd/maps/bcm947xx-flash.c 2006-06-23 18:08:46.000000000 +0200
+@@ -0,0 +1,544 @@
+/*
+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
@@ -377,13 +377,17 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/driv
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
-+#include <asm/io.h>
++#include <linux/wait.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 <typedefs.h>
+#include <osl.h>
@@ -521,7 +525,7 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/driv
+
+ /* found a TRX header */
+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
-+ goto done;
++ goto found;
+ }
+ }
+
@@ -530,47 +534,115 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/driv
+ mtd->name);
+ return -1;
+
-+ done:
++ 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;
-+ int blocksize;
-+
-+ trx = (struct trx_header *) buf;
++ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
+
+ blocksize = mtd->erasesize;
+ if (blocksize < 0x10000)
+ blocksize = 0x10000;
+
+ for (off = (128*1024); off < size; off += blocksize) {
-+ memset(buf, 0xe5, sizeof(buf));
++ 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;
+ }
+ }
+
@@ -579,17 +651,73 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/driv
+ 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;
++ part->size += (mtd->erasesize - 1);
++ part->size &= ~(mtd->erasesize - 1);
++ } 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 */
++ trx2 = block = kmalloc(mtd->erasesize, GFP_KERNEL);
++ 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;
+
-+ cfe_size = find_cfe_size(mtd,size);
++ cfe_size = find_cfe_size(mtd,size);
+
+ /* boot loader */
+ bcm947xx_parts[0].offset = 0;
@@ -751,9 +879,9 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/driv
+
+module_init(init_bcm947xx_map);
+module_exit(cleanup_bcm947xx_map);
-diff -Nur linux-2.4.32/drivers/mtd/maps/Config.in linux-2.4.32-flash/drivers/mtd/maps/Config.in
---- linux-2.4.32/drivers/mtd/maps/Config.in 2003-06-13 16:51:34.000000000 +0200
-+++ linux-2.4.32-flash/drivers/mtd/maps/Config.in 2006-01-31 22:03:50.000000000 +0100
+diff -urN linux.old/drivers/mtd/maps/Config.in linux.dev/drivers/mtd/maps/Config.in
+--- linux.old/drivers/mtd/maps/Config.in 2006-06-22 17:35:39.000000000 +0200
++++ linux.dev/drivers/mtd/maps/Config.in 2006-06-21 21:41:24.000000000 +0200
@@ -48,6 +48,7 @@
fi
@@ -762,9 +890,9 @@ diff -Nur linux-2.4.32/drivers/mtd/maps/Config.in linux-2.4.32-flash/drivers/mtd
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 -Nur linux-2.4.32/drivers/mtd/maps/Makefile linux-2.4.32-flash/drivers/mtd/maps/Makefile
---- linux-2.4.32/drivers/mtd/maps/Makefile 2003-06-13 16:51:34.000000000 +0200
-+++ linux-2.4.32-flash/drivers/mtd/maps/Makefile 2006-01-31 22:03:50.000000000 +0100
+diff -urN linux.old/drivers/mtd/maps/Makefile linux.dev/drivers/mtd/maps/Makefile
+--- linux.old/drivers/mtd/maps/Makefile 2006-06-22 17:35:39.000000000 +0200
++++ linux.dev/drivers/mtd/maps/Makefile 2006-06-21 21:41:24.000000000 +0200
@@ -3,6 +3,8 @@
#
# $Id: Makefile,v 1.37 2003/01/24 14:26:38 dwmw2 Exp $
--
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