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authorcshore <cshore@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-04-15 12:18:25 +0000
committercshore <cshore@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-04-15 12:18:25 +0000
commitf5c866b902908a8e2c63c63e027d5aa562f1c9e7 (patch)
treebe3eed32a0f0f4abc6895b3890ee1276d15d3a42 /target/linux/brcm63xx/files/arch
parent1518b9d70ce04d329cb964455c5d1b9d86fd775b (diff)
bcm63xx: Move the OpenWrt rootfs length field
Dual image capable CFEs store an image sequence at the same place as currently OpenWrt stores the actual rootfs length, so it will get overwritten when flashing through such a CFE. To prevent this from happening, move the rootfs length field to the next four bytes, thus completely using the reserved1 field. Since the reserved1 field is now completely in use, it does not make sense to allow it to be set from the imagetag utility, so remove the option. Signed-off-by: Jonas Gorski <jonas.gorski+openwrt@gmail.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26680 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm63xx/files/arch')
-rw-r--r--target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h4
1 files changed, 2 insertions, 2 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 89650d1ea3..2730edc9ad 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
@@ -61,8 +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 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 imageSequence[4]; // 228-231: Image sequence number
+ char rootLength[4]; // 232-235: 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 headerCRC[CRC_LEN]; // 236-239: CRC32 of header excluding tagVersion
char reserved2[16]; // 240-255: Unused at present
};