diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.7/0300-owrt-mtd-split.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.7/0300-owrt-mtd-split.patch | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/target/linux/lantiq/patches-3.7/0300-owrt-mtd-split.patch b/target/linux/lantiq/patches-3.7/0300-owrt-mtd-split.patch deleted file mode 100644 index ee5fa73..0000000 --- a/target/linux/lantiq/patches-3.7/0300-owrt-mtd-split.patch +++ /dev/null @@ -1,221 +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 -@@ -844,6 +844,168 @@ 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 temp + 0x40; -+} -+ -+static unsigned long find_eva_size(struct mtd_info *mtd, -+ unsigned long offset) -+{ -+#define EVA_MAGIC 0xfeed1281 -+ 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) != EVA_MAGIC) -+ return 0; -+ -+ ret = mtd_read(mtd, offset + 4, 4, &len, (void *)&temp); -+ if (ret || len != sizeof(temp)) -+ return 0; -+ -+ /* add eva header size */ -+ temp = le32_to_cpu(temp) + 0x18; -+ -+ temp &= ~0xffff; -+ temp += 0x10000; -+ return temp; -+} -+ -+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 int detect_eva_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 be32_to_cpu(temp) == SQUASHFS_MAGIC; -+} -+ -+static unsigned long find_brnimage_size(struct mtd_info *mtd, -+ unsigned long offset) -+{ -+ unsigned long buf[4]; -+ // Assume at most 2MB of kernel image -+ unsigned long end = offset + (2 << 20); -+ unsigned long ptr = offset + 0x400 - 12; -+ size_t len; -+ int ret; -+ -+ while (ptr < end) { -+ long size_min = ptr - 0x400 - 12 - offset; -+ long size_max = ptr + 12 - offset; -+ ret = mtd_read(mtd, ptr, 16, &len, (void *)buf); -+ if (ret || len != 16) -+ return 0; -+ -+ if (le32_to_cpu(buf[0]) < size_min || -+ le32_to_cpu(buf[0]) > size_max) { -+ ptr += 0x400; -+ continue; -+ } -+ -+ if (le32_to_cpu(buf[3]) == SQUASHFS_MAGIC) -+ return ptr + 12 - offset; -+ -+ ptr += 0x400; -+ } -+ -+ 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_eva_size(mtd, part->offset); -+ if (!split_partitions[0].size) { -+ split_partitions[0].size = find_brnimage_size(mtd, part->offset); -+ if (!split_partitions[0].size) { -+ printk(KERN_NOTICE "no uImage or brnImage or eva found in linux partition\n"); -+ return -1; -+ } -+ } -+ } -+ -+ if (detect_eva_squashfs_partition(mtd, -+ part->offset -+ + split_partitions[0].size)) { -+ split_partitions[0].size += 0x100; -+ pr_info("found eva dummy squashfs behind kernel\n"); -+ } else 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 -@@ -860,7 +1022,7 @@ 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 - -@@ -877,6 +1039,15 @@ int add_mtd_partitions(struct mtd_info * - - add_mtd_device(&slave->mtd); - -+#ifdef CONFIG_MTD_UIMAGE_SPLIT -+ if (!strcmp(parts[i].name, "linux")) { -+ ret = split_uimage(master, &parts[i]); -+ -+ if (ret) -+ printk(KERN_WARNING "Can't split linux partition\n"); -+ } -+#endif -+ - if (!strcmp(parts[i].name, "rootfs")) { - #ifdef CONFIG_MTD_ROOTFS_ROOT_DEV - if (ROOT_DEV == 0) { |