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- --- a/drivers/mtd/Kconfig
- +++ b/drivers/mtd/Kconfig
- @@ -27,6 +27,11 @@ config MTD_SPLIT_FIRMWARE_NAME
- 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
- +
- source "drivers/mtd/mtdsplit/Kconfig"
-
- endmenu
- --- a/drivers/mtd/mtdpart.c
- +++ b/drivers/mtd/mtdpart.c
- @@ -682,6 +682,37 @@ mtd_pad_erasesize(struct mtd_info *mtd,
- 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;
- +
- + if (config_enabled(CONFIG_MTD_SPLIT_UIMAGE_FW))
- + pr_err("Dedicated partitioner didn't split firmware partition, please fill a bug report!\n");
- + else
- + pr_warn("Support for built-in firmware splitter will be removed, please use CONFIG_MTD_SPLIT_UIMAGE_FW\n");
- +
- + __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
- @@ -690,7 +721,14 @@ mtd_pad_erasesize(struct mtd_info *mtd,
-
- static void split_firmware(struct mtd_info *master, struct mtd_part *part)
- {
- - run_parsers_by_type(part, MTD_PARSER_TYPE_FIRMWARE);
- + int ret;
- +
- + ret = run_parsers_by_type(part, MTD_PARSER_TYPE_FIRMWARE);
- + if (ret > 0)
- + return;
- +
- + if (config_enabled(CONFIG_MTD_UIMAGE_SPLIT))
- + split_uimage(master, part);
- }
-
- void __weak arch_split_mtd_part(struct mtd_info *master, const char *name,
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