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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
master
Felix Fietkau 2006-06-23 16:30:30 +00:00
parent f73272206d
commit 6c41e39df9
1 changed files with 167 additions and 39 deletions
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204
target/linux/brcm-2.4/patches/004-flash.patch
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@ -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;
+ }
+ }
+
@ -579,14 +651,70 @@ 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);
@ -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 $