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authorcshore <cshore@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-12-26 04:18:13 +0000
committercshore <cshore@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-12-26 04:18:13 +0000
commit612cc293e11afc7abde8057c8ccf4210e1a0b460 (patch)
treeb31fe0c8ce115d86db9ab2bf1a5da7bb585be8f9 /target
parent449cb3140d8b7c1263298b9f0813b327be4cfeb5 (diff)
Added OpenWRT-specific field to imagetag so that we can record the real root length, so that when the CRC fixup is applied and the root length is recorded as zero we can still calculate the rootfs mtd partition size.
Signed-off-by: Daniel Dickinson <daniel@cshore.neomailbox.net> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24838 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h5
-rw-r--r--target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch30
2 files changed, 5 insertions, 30 deletions
diff --git a/target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h b/target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h
index d6a5ee811..89650d1ea 100644
--- a/target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h
+++ b/target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h
@@ -48,7 +48,7 @@ struct bcm_tag {
char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE
char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE
char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of image start (kernel for OpenWRT, rootfs for stock firmware)
- char rootLength[IMAGE_LEN]; // 106-115: Size of rootfs
+ char flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs for flashing
char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel
char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel
char dualImage[DUALFLAG_LEN]; // 138-139: Unused at present
@@ -61,7 +61,8 @@ struct bcm_tag {
char imageCRC[CRC_LEN]; // 216-219: CRC32 of image less imagetag (kernel for Alice Gate)
char rootfsCRC[CRC_LEN]; // 220-223: CRC32 of rootfs partition
char kernelCRC[CRC_LEN]; // 224-227: CRC32 of kernel partition
- char reserved1[8]; // 228-235: Unused at present
+ char rootLength[4]; // 228-231: steal from reserved1 to keep the real root length so we can use in the flash map even after we have change the rootLength to 0 to satisfy devices that check CRC on every boot
+ char reserved1[4]; // 232-235: Unused at present
char headerCRC[CRC_LEN]; // 236-239: CRC32 of header excluding tagVersion
char reserved2[16]; // 240-255: Unused at present
};
diff --git a/target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch b/target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch
index c1b424d5d..4835a159a 100644
--- a/target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch
+++ b/target/linux/brcm63xx/patches-2.6.35/040-bcm963xx_flashmap.patch
@@ -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 +1,314 @@
+@@ -0,0 +1,288 @@
+/*
+ * Copyright (C) 2006-2008 Florian Fainelli <florian@openwrt.org>
+ * Mike Albon <malbon@openwrt.org>
@@ -158,6 +158,7 @@ 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);
+ tagversion = &(buf->tagVersion[0]);
+ boardid = &(buf->boardid[0]);
+
@@ -175,33 +176,6 @@ Signed-off-by: Axel Gembe <ago@bastart.eu.org>
+ return -EINVAL;
+ }
+
-+ // if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) {
-+ printk(KERN_DEBUG PFX "Squash magic %08lx: Found: %08lx\n", (long unsigned int)SQUASHFS_MAGIC, (long unsigned int)le32_to_cpu(sb.s_magic));
-+ if ((uint32_t)SQUASHFS_MAGIC != (uint32_t)le32_to_cpu(sb.s_magic) ) {
-+ /* Not a squashfs image */
-+ printk(KERN_DEBUG PFX "No squashfs image in \"%s\"\n", master->name);
-+ printk(KERN_DEBUG PFX "Jffs magic %04x: Found: %04x\n", (uint16_t)(JFFS2_MAGIC_BITMASK), *(uint16_t *)(&sb));
-+ if (*(uint16_t *)(&sb) == JFFS2_MAGIC_BITMASK) {
-+ printk(KERN_DEBUG PFX "jffs image in \"%s\"\n", master->name);
-+ /* Is JFFS2 so have rootfslen so that true length gets calculated */
-+ rootfslen = master->size - master->erasesize - offset;
-+ } else {
-+ /* We only recognize squashfs and jffs2. If it's not either of these,
-+ don't create a rootfs partition. */
-+ printk(KERN_INFO PFX "No known root filesystem in \"%s\"\n", master->name);
-+ rootfslen = 0;
-+ }
-+ } else {
-+ /* Is a squash image so find where the squash ends */
-+ if (le64_to_cpu((sb.bytes_used)) <= 0) {
-+ printk(KERN_ALERT PFX "split_squashfs: squashfs is empty in \"%s\"\n",
-+ master->name);
-+ return 0;
-+ }
-+
-+ rootfslen = (u32) le64_to_cpu(sb.bytes_used);
-+ }
-+
+ rootfslen = ( ( rootfslen % master->erasesize ) > 0 ? (((rootfslen / master->erasesize) + 1 ) * master->erasesize) : rootfslen);
+ totallen = rootfslen + kernellen + sizeof(struct bcm_tag);
+