diff options
Diffstat (limited to 'target/linux/generic/patches-3.18/408-mtd-old-rootfs-squashfs-splitter.patch')
| -rw-r--r-- | target/linux/generic/patches-3.18/408-mtd-old-rootfs-squashfs-splitter.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/408-mtd-old-rootfs-squashfs-splitter.patch b/target/linux/generic/patches-3.18/408-mtd-old-rootfs-squashfs-splitter.patch new file mode 100644 index 0000000000..07d4f7d824 --- /dev/null +++ b/target/linux/generic/patches-3.18/408-mtd-old-rootfs-squashfs-splitter.patch @@ -0,0 +1,76 @@ +--- a/drivers/mtd/Kconfig ++++ b/drivers/mtd/Kconfig +@@ -18,6 +18,11 @@ config MTD_ROOTFS_ROOT_DEV + bool "Automatically set 'rootfs' partition to be root filesystem" + default y + ++config MTD_ROOTFS_SPLIT ++ bool "Automatically split 'rootfs' partition for squashfs" ++ select MTD_SPLIT ++ default y ++ + config MTD_SPLIT_FIRMWARE + bool "Automatically split firmware partition for kernel+rootfs" + default y +--- a/drivers/mtd/mtdpart.c ++++ b/drivers/mtd/mtdpart.c +@@ -681,6 +681,47 @@ mtd_pad_erasesize(struct mtd_info *mtd, + return len; + } + ++static int split_squashfs(struct mtd_info *master, int offset, int *split_offset) ++{ ++ size_t squashfs_len; ++ int len, ret; ++ ++ ret = mtd_get_squashfs_len(master, offset, &squashfs_len); ++ if (ret) ++ return ret; ++ ++ len = mtd_pad_erasesize(master, offset, squashfs_len); ++ *split_offset = offset + len; ++ ++ return 0; ++} ++ ++static void split_rootfs_data(struct mtd_info *master, struct mtd_part *part) ++{ ++ unsigned int split_offset = 0; ++ unsigned int split_size; ++ int ret; ++ ++ ret = split_squashfs(master, part->offset, &split_offset); ++ if (ret) ++ return; ++ ++ if (split_offset <= 0) ++ return; ++ ++ if (config_enabled(CONFIG_MTD_SPLIT_SQUASHFS_ROOT)) ++ pr_err("Dedicated partitioner didn't create \"rootfs_data\" partition, please fill a bug report!\n"); ++ else ++ pr_warn("Support for built-in \"rootfs_data\" splitter will be removed, please use CONFIG_MTD_SPLIT_SQUASHFS_ROOT\n"); ++ ++ split_size = part->mtd.size - (split_offset - part->offset); ++ printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=0x%x, len=0x%x\n", ++ ROOTFS_SPLIT_NAME, split_offset, split_size); ++ ++ __mtd_add_partition(master, ROOTFS_SPLIT_NAME, split_offset, ++ split_size, false); ++} ++ + #define UBOOT_MAGIC 0x27051956 + + static void split_uimage(struct mtd_info *master, struct mtd_part *part) +@@ -738,7 +779,10 @@ static void mtd_partition_split(struct m + return; + + if (!strcmp(part->mtd.name, "rootfs")) { +- run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS); ++ int num = run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS); ++ ++ if (num <= 0 && config_enabled(CONFIG_MTD_ROOTFS_SPLIT)) ++ split_rootfs_data(master, part); + + rootfs_found = 1; + } |