71 lines
1.9 KiB
Diff
71 lines
1.9 KiB
Diff
--- 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
|
|
@@ -696,6 +696,37 @@ 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
|
|
@@ -704,7 +735,14 @@ 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,
|