[openwrt/openwrt] kernel: make uImage.FIT partition parser work on MBR partitions

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/8d633bf9f71e52aaefa917c83ab8e71622253e74

commit 8d633bf9f71e52aaefa917c83ab8e71622253e74
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Mon Jul 12 16:54:45 2021 +0100

    kernel: make uImage.FIT partition parser work on MBR partitions
    
    Introduce new partition type 0x2e representing uImage.FIT and trigger
    FIT partition parser on partitions having that type.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 target/linux/generic/files/block/partitions/fit.c  |  4 +--
 .../hack-5.10/410-block-fit-partition-parser.patch | 36 ++++++++++++++++++++++
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/target/linux/generic/files/block/partitions/fit.c b/target/linux/generic/files/block/partitions/fit.c
index 823ee715de..27e44a4af4 100644
--- a/target/linux/generic/files/block/partitions/fit.c
+++ b/target/linux/generic/files/block/partitions/fit.c
@@ -189,8 +189,8 @@ int parse_fit_partitions(struct parsed_partitions *state, u64 fit_start_sector,
 
 		image_description = fdt_getprop(fit, node, FIT_DESC_PROP, &image_description_len);
 
-		printk(KERN_DEBUG "FIT: %16s sub-image 0x%08x - 0x%08x \"%s\" %s%s%s\n",
-			image_type, image_pos, image_pos + image_len, image_name,
+		printk(KERN_DEBUG "FIT: %16s sub-image 0x%08x..0x%08x \"%s\" %s%s%s\n",
+			image_type, image_pos, image_pos + image_len - 1, image_name,
 			image_description?"(":"", image_description?:"", image_description?") ":"");
 
 		if (strcmp(image_type, FIT_FILESYSTEM_PROP))
diff --git a/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch b/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch
index 2528f3afa1..6c2132e85e 100644
--- a/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch
+++ b/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch
@@ -217,3 +217,39 @@
  
  	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);
  
+--- a/block/partitions/msdos.c
++++ b/block/partitions/msdos.c
+@@ -565,6 +565,15 @@ static void parse_minix(struct parsed_pa
+ #endif /* CONFIG_MINIX_SUBPARTITION */
+ }
+ 
++static void parse_fit_mbr(struct parsed_partitions *state,
++			  sector_t offset, sector_t size, int origin)
++{
++#ifdef CONFIG_FIT_PARTITION
++	u32 extra_slot = 64;
++	(void) parse_fit_partitions(state, offset, size, &extra_slot, 1);
++#endif /* CONFIG_FIT_PARTITION */
++}
++
+ static struct {
+ 	unsigned char id;
+ 	void (*parse)(struct parsed_partitions *, sector_t, sector_t, int);
+@@ -576,6 +585,7 @@ static struct {
+ 	{UNIXWARE_PARTITION, parse_unixware},
+ 	{SOLARIS_X86_PARTITION, parse_solaris_x86},
+ 	{NEW_SOLARIS_X86_PARTITION, parse_solaris_x86},
++	{FIT_PARTITION, parse_fit_mbr},
+ 	{0, NULL},
+ };
+ 
+--- a/include/linux/msdos_partition.h
++++ b/include/linux/msdos_partition.h
+@@ -31,6 +31,7 @@ enum msdos_sys_ind {
+ 	LINUX_LVM_PARTITION = 0x8e,
+ 	LINUX_RAID_PARTITION = 0xfd,	/* autodetect RAID partition */
+ 
++	FIT_PARTITION = 0x2e,		/* U-Boot uImage.FIT */
+ 	SOLARIS_X86_PARTITION =	0x82,	/* also Linux swap partitions */
+ 	NEW_SOLARIS_X86_PARTITION = 0xbf,
+