diff options
Diffstat (limited to 'target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch')
| -rw-r--r-- | target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch | 50 |
1 files changed, 3 insertions, 47 deletions
diff --git a/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch index ede59104b3..5ffacaf642 100644 --- a/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch +++ b/target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch @@ -1,6 +1,6 @@ --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig -@@ -12,6 +12,28 @@ menuconfig MTD +@@ -12,6 +12,23 @@ menuconfig MTD if MTD @@ -19,11 +19,6 @@ + depends on MTD_SPLIT_FIRMWARE + default "firmware" + -+config MTD_UIMAGE_SPLIT -+ bool "Enable split support for firmware partitions containing a uImage" -+ depends on MTD_SPLIT_FIRMWARE -+ default y -+ +endmenu + config MTD_TESTS @@ -120,47 +115,10 @@ int mtd_del_partition(struct mtd_info *master, int partno) { struct mtd_part *slave, *next; -@@ -614,6 +628,74 @@ int mtd_del_partition(struct mtd_info *m +@@ -614,6 +628,35 @@ int mtd_del_partition(struct mtd_info *m } EXPORT_SYMBOL_GPL(mtd_del_partition); -+static inline unsigned long -+mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len) -+{ -+ unsigned long mask = mtd->erasesize - 1; -+ -+ len += offset & mask; -+ len = (len + mask) & ~mask; -+ len -= offset & mask; -+ return len; -+} -+ -+#define UBOOT_MAGIC 0x27051956 -+ -+static void split_uimage(struct mtd_info *master, struct mtd_part *part) -+{ -+ struct { -+ __be32 magic; -+ __be32 pad[2]; -+ __be32 size; -+ } hdr; -+ size_t len; -+ -+ if (mtd_read(master, part->offset, sizeof(hdr), &len, (void *) &hdr)) -+ return; -+ -+ if (len != sizeof(hdr) || hdr.magic != cpu_to_be32(UBOOT_MAGIC)) -+ return; -+ -+ len = be32_to_cpu(hdr.size) + 0x40; -+ len = mtd_pad_erasesize(master, part->offset, len); -+ if (len + master->erasesize > part->mtd.size) -+ return; -+ -+ __mtd_add_partition(master, "rootfs", part->offset + len, -+ part->mtd.size - len, false); -+} -+ +#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME +#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME +#else @@ -169,8 +127,6 @@ + +static void split_firmware(struct mtd_info *master, struct mtd_part *part) +{ -+ if (config_enabled(CONFIG_MTD_UIMAGE_SPLIT)) -+ split_uimage(master, part); +} + +void __weak arch_split_mtd_part(struct mtd_info *master, const char *name, @@ -195,7 +151,7 @@ /* * 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 -@@ -643,6 +725,7 @@ int add_mtd_partitions(struct mtd_info * +@@ -643,6 +686,7 @@ int add_mtd_partitions(struct mtd_info * mutex_unlock(&mtd_partitions_mutex); add_mtd_device(&slave->mtd); |