openwrtv4/target/linux/generic/pending-3.18/405-mtd-old-firmware-uimage-splitter.patch
John Crispin 74d00a8c38 kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>
2017-08-05 08:46:36 +02:00

70 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
@@ -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,