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patches-2.6.35: mtd flashmap: Really fixed sparelen and rootfslen. The real rootfslen for OpenWRT images comes from a bigendian uint32_t in reserved1 of the bcm_tag, which is now used to correctly calculate the rootfslen (and thus the sparelen).

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SVN-Revision: 24843
This commit is contained in:
Daniel Dickinson 2010-12-28 08:10:32 +00:00
parent 5ee2a6c696
commit dc9c1ac1f7
1 changed files with 5 additions and 17 deletions
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20
target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch
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@ -73,7 +73,7 @@ Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o
--- /dev/null
+++ b/drivers/mtd/maps/bcm963xx-flash.c
@@ -0,0 +1,288 @@
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2006-2008 Florian Fainelli <florian@openwrt.org>
+ * Mike Albon <malbon@openwrt.org>
@ -136,12 +136,11 @@ Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+ int ret;
+ size_t retlen;
+ unsigned int rootfsaddr, kerneladdr, spareaddr;
+ unsigned int rootfslen, kernellen, sparelen, totallen;
+ unsigned int rootfslen, kernellen, sparelen;
+ int namelen = 0;
+ int i, offset;
+ char *boardid;
+ char *tagversion;
+ struct squashfs_super_block sb;
+
+ /* Allocate memory for buffer */
+ buf = vmalloc(sizeof(struct bcm_tag));
@ -157,8 +156,7 @@ Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+
+ sscanf(buf->kernelAddress, "%u", &kerneladdr);
+ sscanf(buf->kernelLength, "%u", &kernellen);
+ sscanf(buf->totalLength, "%u", &totallen);
+ sscanf(buf->rootLength, "%u", &rootfslen);
+ rootfslen = *(uint32_t *)(&(buf->rootLength[0]));
+ tagversion = &(buf->tagVersion[0]);
+ boardid = &(buf->boardid[0]);
+
@ -167,20 +165,10 @@ Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+ kerneladdr = kerneladdr - EXTENDED_SIZE;
+ rootfsaddr = kerneladdr + kernellen;
+
+ // offset = master->erasesize + sizeof(struct bcm_tag) + kernellen;
+ offset = rootfsaddr;
+ ret = master->read(master, offset, sizeof(sb), &retlen, (void *) &sb);
+ if (ret || (retlen != sizeof(sb))) {
+ printk(KERN_ALERT PFX "parse_cfe_partitions: error occured while reading "
+ "from \"%s\"\n", master->name);
+ return -EINVAL;
+ }
+
+ rootfslen = ( ( rootfslen % master->erasesize ) > 0 ? (((rootfslen / master->erasesize) + 1 ) * master->erasesize) : rootfslen);
+ totallen = rootfslen + kernellen + sizeof(struct bcm_tag);
+
+ spareaddr = rootfsaddr + rootfslen;
+ sparelen = master->size - totallen - master->erasesize;
+ sparelen = master->size - spareaddr - master->erasesize;
+
+ /* Determine number of partitions */
+ namelen = 8;