diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.3/012-mtd-bcm63xxpart-handle-Broadcom-partition-order.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.3/012-mtd-bcm63xxpart-handle-Broadcom-partition-order.patch | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.3/012-mtd-bcm63xxpart-handle-Broadcom-partition-order.patch b/target/linux/brcm63xx/patches-3.3/012-mtd-bcm63xxpart-handle-Broadcom-partition-order.patch new file mode 100644 index 000000000..b12aed6b9 --- /dev/null +++ b/target/linux/brcm63xx/patches-3.3/012-mtd-bcm63xxpart-handle-Broadcom-partition-order.patch @@ -0,0 +1,101 @@ +From a73c2d9dc7ea0d14fbf48db48e783d123162f5c3 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Thu, 19 Apr 2012 13:15:57 +0200 +Subject: [PATCH] mtd: bcm63xxpart: handle Broadcom partition order + +The original Broadcom partition order has the root fs in front of the +kernel, which resulted in miscalculated partition sizes. +Detect when such an image is on the flash and also reorder the partitions +accordingly. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +Acked-by: Florian Fainelli <florian@openwrt.org> +Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com> +--- + drivers/mtd/bcm63xxpart.c | 41 ++++++++++++++++++++++++++++++----------- + 1 file changed, 30 insertions(+), 11 deletions(-) + +--- a/drivers/mtd/bcm63xxpart.c ++++ b/drivers/mtd/bcm63xxpart.c +@@ -4,7 +4,7 @@ + * Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org> + * Mike Albon <malbon@openwrt.org> + * Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net> +- * Copyright © 2011 Jonas Gorski <jonas.gorski@gmail.com> ++ * Copyright © 2011-2012 Jonas Gorski <jonas.gorski@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by +@@ -82,6 +82,7 @@ static int bcm63xx_parse_cfe_partitions( + int namelen = 0; + int i; + u32 computed_crc; ++ bool rootfs_first = false; + + if (bcm63xx_detect_cfe(master)) + return -EINVAL; +@@ -109,6 +110,7 @@ static int bcm63xx_parse_cfe_partitions( + char *boardid = &(buf->board_id[0]); + char *tagversion = &(buf->tag_version[0]); + ++ sscanf(buf->flash_image_start, "%u", &rootfsaddr); + sscanf(buf->kernel_address, "%u", &kerneladdr); + sscanf(buf->kernel_length, "%u", &kernellen); + sscanf(buf->total_length, "%u", &totallen); +@@ -117,10 +119,19 @@ static int bcm63xx_parse_cfe_partitions( + tagversion, boardid); + + kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE; +- rootfsaddr = kerneladdr + kernellen; ++ rootfsaddr = rootfsaddr - BCM63XX_EXTENDED_SIZE; + spareaddr = roundup(totallen, master->erasesize) + cfelen; + sparelen = master->size - spareaddr - nvramlen; +- rootfslen = spareaddr - rootfsaddr; ++ ++ if (rootfsaddr < kerneladdr) { ++ /* default Broadcom layout */ ++ rootfslen = kerneladdr - rootfsaddr; ++ rootfs_first = true; ++ } else { ++ /* OpenWrt layout */ ++ rootfsaddr = kerneladdr + kernellen; ++ rootfslen = spareaddr - rootfsaddr; ++ } + } else { + pr_warn("CFE boot tag CRC invalid (expected %08x, actual %08x)\n", + buf->header_crc, computed_crc); +@@ -156,18 +167,26 @@ static int bcm63xx_parse_cfe_partitions( + curpart++; + + if (kernellen > 0) { +- parts[curpart].name = "kernel"; +- parts[curpart].offset = kerneladdr; +- parts[curpart].size = kernellen; ++ int kernelpart = curpart; ++ ++ if (rootfslen > 0 && rootfs_first) ++ kernelpart++; ++ parts[kernelpart].name = "kernel"; ++ parts[kernelpart].offset = kerneladdr; ++ parts[kernelpart].size = kernellen; + curpart++; + } + + if (rootfslen > 0) { +- parts[curpart].name = "rootfs"; +- parts[curpart].offset = rootfsaddr; +- parts[curpart].size = rootfslen; +- if (sparelen > 0) +- parts[curpart].size += sparelen; ++ int rootfspart = curpart; ++ ++ if (kernellen > 0 && rootfs_first) ++ rootfspart--; ++ parts[rootfspart].name = "rootfs"; ++ parts[rootfspart].offset = rootfsaddr; ++ parts[rootfspart].size = rootfslen; ++ if (sparelen > 0 && !rootfs_first) ++ parts[rootfspart].size += sparelen; + curpart++; + } + |