diff options
Diffstat (limited to 'target/linux/ramips/patches-3.8/0208-owrt-mtd-split.patch')
| -rw-r--r-- | target/linux/ramips/patches-3.8/0208-owrt-mtd-split.patch | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/target/linux/ramips/patches-3.8/0208-owrt-mtd-split.patch b/target/linux/ramips/patches-3.8/0208-owrt-mtd-split.patch deleted file mode 100644 index f15d16f6da..0000000000 --- a/target/linux/ramips/patches-3.8/0208-owrt-mtd-split.patch +++ /dev/null @@ -1,151 +0,0 @@ -From 2a295753a10823a47542c779a25bbb1f52c71281 Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Fri, 3 Aug 2012 10:27:13 +0200 -Subject: [PATCH 19/25] owrt mtd split - ---- - .../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 1 + - arch/mips/lantiq/setup.c | 7 + - drivers/mtd/Kconfig | 4 + - drivers/mtd/mtdpart.c | 173 +++++++++++++++++++- - 4 files changed, 184 insertions(+), 1 deletions(-) - ---- a/drivers/mtd/Kconfig -+++ b/drivers/mtd/Kconfig -@@ -31,6 +31,10 @@ config MTD_ROOTFS_SPLIT - bool "Automatically split 'rootfs' partition for squashfs" - default y - -+config MTD_UIMAGE_SPLIT -+ bool "Automatically split 'linux' partition into 'kernel' and 'rootfs'" -+ default y -+ - config MTD_REDBOOT_PARTS - tristate "RedBoot partition table parsing" - ---help--- ---- a/drivers/mtd/mtdpart.c -+++ b/drivers/mtd/mtdpart.c -@@ -833,6 +833,99 @@ static int refresh_rootfs_split(struct m - } - #endif /* CONFIG_MTD_ROOTFS_SPLIT */ - -+#ifdef CONFIG_MTD_UIMAGE_SPLIT -+static unsigned long find_uimage_size(struct mtd_info *mtd, -+ unsigned long offset) -+{ -+#define UBOOT_MAGIC 0x56190527 -+ unsigned long magic = 0; -+ unsigned long temp; -+ size_t len; -+ int ret; -+ -+ ret = mtd_read(mtd, offset, 4, &len, (void *)&magic); -+ if (ret || len != sizeof(magic)) -+ return 0; -+ -+ if (le32_to_cpu(magic) != UBOOT_MAGIC) -+ return 0; -+ -+ ret = mtd_read(mtd, offset + 12, 4, &len, (void *)&temp); -+ if (ret || len != sizeof(temp)) -+ return 0; -+ -+ return be32_to_cpu(temp) + 0x40; -+} -+ -+static int detect_squashfs_partition(struct mtd_info *mtd, unsigned long offset) -+{ -+ unsigned long temp; -+ size_t len; -+ int ret; -+ -+ ret = mtd_read(mtd, offset, 4, &len, (void *)&temp); -+ if (ret || len != sizeof(temp)) -+ return 0; -+ -+ return le32_to_cpu(temp) == SQUASHFS_MAGIC; -+} -+ -+static unsigned long find_squashfs_offset(struct mtd_info *mtd, unsigned long _offset) -+{ -+ /* scan the first 2MB at 64K offsets */ -+ int i; -+ -+ for (i = 0; i < 32; i++) { -+ unsigned long offset = i * 64 * 1024; -+ if (detect_squashfs_partition(mtd, _offset + offset)) -+ return offset; -+ } -+ return 0; -+} -+ -+static int split_uimage(struct mtd_info *mtd, -+ const struct mtd_partition *part) -+{ -+ static struct mtd_partition split_partitions[] = { -+ { -+ .name = "kernel", -+ .offset = 0x0, -+ .size = 0x0, -+ }, { -+ .name = "rootfs", -+ .offset = 0x0, -+ .size = 0x0, -+ }, -+ }; -+ -+ split_partitions[0].size = find_uimage_size(mtd, part->offset); -+ if (!split_partitions[0].size) { -+ split_partitions[0].size = find_squashfs_offset(mtd, part->offset); -+ if (!split_partitions[0].size) { -+ pr_err("failed to split firmware partition\n"); -+ return -1; -+ } -+ } -+ -+ if (!detect_squashfs_partition(mtd, -+ part->offset -+ + split_partitions[0].size)) { -+ split_partitions[0].size &= ~(mtd->erasesize - 1); -+ split_partitions[0].size += mtd->erasesize; -+ } else { -+ pr_info("found squashfs behind kernel\n"); -+ } -+ -+ split_partitions[0].offset = part->offset; -+ split_partitions[1].offset = part->offset + split_partitions[0].size; -+ split_partitions[1].size = part->size - split_partitions[0].size; -+ -+ add_mtd_partitions(mtd, split_partitions, 2); -+ -+ return 0; -+} -+#endif -+ - /* - * This function, given a master MTD object and a partition table, creates - * and registers slave MTD objects which are bound to the master according to -@@ -849,7 +942,7 @@ int add_mtd_partitions(struct mtd_info * - struct mtd_part *slave; - uint64_t cur_offset = 0; - int i; --#ifdef CONFIG_MTD_ROOTFS_SPLIT -+#if defined(CONFIG_MTD_ROOTFS_SPLIT) || defined(CONFIG_MTD_UIMAGE_SPLIT) - int ret; - #endif - -@@ -866,6 +959,14 @@ int add_mtd_partitions(struct mtd_info * - - add_mtd_device(&slave->mtd); - -+#ifdef CONFIG_MTD_UIMAGE_SPLIT -+ if (!strcmp(parts[i].name, "firmware")) { -+ ret = split_uimage(master, &parts[i]); -+ if (ret) -+ printk(KERN_WARNING "Can't split firmware partition\n"); -+ } -+#endif -+ - if (!strcmp(parts[i].name, "rootfs")) { - #ifdef CONFIG_MTD_ROOTFS_ROOT_DEV - if (ROOT_DEV == 0) { |