mirror of https://github.com/hak5/openwrt-owl.git
102 lines
3.4 KiB
Diff
102 lines
3.4 KiB
Diff
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++;
|
|
}
|
|
|