[openwrt/openwrt] mediatek: phase out uImage.FIT partition parser

LEDE Commits lede-commits at lists.infradead.org
Wed Aug 28 07:12:27 PDT 2024


dangole pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/dd1bfbe97113185e8f968a889c26f9a4be19fbdf

commit dd1bfbe97113185e8f968a889c26f9a4be19fbdf
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Sat Aug 10 03:55:46 2024 +0100

    mediatek: phase out uImage.FIT partition parser
    
    All boards using the deprecated uImage.FIT partition parser have
    been migrated to the new fitblk driver. Drop the now no longer
    needed partition parser.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 target/linux/mediatek/files/block/partitions/fit.c | 307 ---------------------
 target/linux/mediatek/filogic/config-6.6           |   1 -
 target/linux/mediatek/mt7622/config-6.6            |   1 -
 target/linux/mediatek/mt7623/config-6.6            |   1 -
 target/linux/mediatek/mt7629/config-6.6            |   1 -
 .../041-block-fit-partition-parser.patch           | 216 ---------------
 6 files changed, 527 deletions(-)

diff --git a/target/linux/mediatek/files/block/partitions/fit.c b/target/linux/mediatek/files/block/partitions/fit.c
deleted file mode 100644
index 01b0f42c7c..0000000000
--- a/target/linux/mediatek/files/block/partitions/fit.c
+++ /dev/null
@@ -1,307 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  fs/partitions/fit.c
- *  Copyright (C) 2021  Daniel Golle
- *
- *  headers extracted from U-Boot mkimage sources
- *  (C) Copyright 2008 Semihalf
- *  (C) Copyright 2000-2005
- *  Wolfgang Denk, DENX Software Engineering, wd at denx.de.
- *
- *  based on existing partition parsers
- *  Copyright (C) 1991-1998  Linus Torvalds
- *  Re-organised Feb 1998 Russell King
- */
-
-#define pr_fmt(fmt) fmt
-
-#include <linux/types.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_fdt.h>
-#include <linux/libfdt.h>
-#include <linux/version.h>
-
-#include "check.h"
-
-#define FIT_IMAGES_PATH		"/images"
-#define FIT_CONFS_PATH		"/configurations"
-
-/* hash/signature/key node */
-#define FIT_HASH_NODENAME	"hash"
-#define FIT_ALGO_PROP		"algo"
-#define FIT_VALUE_PROP		"value"
-#define FIT_IGNORE_PROP		"uboot-ignore"
-#define FIT_SIG_NODENAME	"signature"
-#define FIT_KEY_REQUIRED	"required"
-#define FIT_KEY_HINT		"key-name-hint"
-
-/* cipher node */
-#define FIT_CIPHER_NODENAME	"cipher"
-#define FIT_ALGO_PROP		"algo"
-
-/* image node */
-#define FIT_DATA_PROP		"data"
-#define FIT_DATA_POSITION_PROP	"data-position"
-#define FIT_DATA_OFFSET_PROP	"data-offset"
-#define FIT_DATA_SIZE_PROP	"data-size"
-#define FIT_TIMESTAMP_PROP	"timestamp"
-#define FIT_DESC_PROP		"description"
-#define FIT_ARCH_PROP		"arch"
-#define FIT_TYPE_PROP		"type"
-#define FIT_OS_PROP		"os"
-#define FIT_COMP_PROP		"compression"
-#define FIT_ENTRY_PROP		"entry"
-#define FIT_LOAD_PROP		"load"
-
-/* configuration node */
-#define FIT_KERNEL_PROP		"kernel"
-#define FIT_FILESYSTEM_PROP	"filesystem"
-#define FIT_RAMDISK_PROP	"ramdisk"
-#define FIT_FDT_PROP		"fdt"
-#define FIT_LOADABLE_PROP	"loadables"
-#define FIT_DEFAULT_PROP	"default"
-#define FIT_SETUP_PROP		"setup"
-#define FIT_FPGA_PROP		"fpga"
-#define FIT_FIRMWARE_PROP	"firmware"
-#define FIT_STANDALONE_PROP	"standalone"
-
-#define FIT_MAX_HASH_LEN	HASH_MAX_DIGEST_SIZE
-
-#define MIN_FREE_SECT		16
-#define REMAIN_VOLNAME		"rootfs_data"
-
-int parse_fit_partitions(struct parsed_partitions *state, u64 fit_start_sector, u64 sectors, int *slot, int add_remain)
-{
-	struct block_device *bdev = state->disk->part0;
-	struct address_space *mapping = bdev->bd_inode->i_mapping;
-	struct page *page;
-	void *fit, *init_fit;
-	struct partition_meta_info *info;
-	char tmp[sizeof(info->volname)];
-	u64 dsize, dsectors, imgmaxsect = 0;
-	u32 size, image_pos, image_len;
-	const u32 *image_offset_be, *image_len_be, *image_pos_be;
-	int ret = 1, node, images, config;
-	const char *image_name, *image_type, *image_description, *config_default,
-		*config_description, *config_loadables, *bootconf_c;
-	int image_name_len, image_type_len, image_description_len, config_default_len,
-		config_description_len, config_loadables_len, bootconf_len;
-	sector_t start_sect, nr_sects;
-	size_t label_min;
-	struct device_node *np = NULL;
-	char *bootconf = NULL, *bootconf_term;
-	const char *loadable;
-	const char *select_rootfs = NULL;
-	bool found;
-	int loadables_rem_len, loadable_len;
-
-	if (fit_start_sector % (1<<(PAGE_SHIFT - SECTOR_SHIFT)))
-		return -ERANGE;
-
-	page = read_mapping_page(mapping, fit_start_sector >> (PAGE_SHIFT - SECTOR_SHIFT), NULL);
-	if (IS_ERR(page))
-		return -EFAULT;
-
-	if (PageError(page))
-		return -EFAULT;
-
-	init_fit = page_address(page);
-
-	if (!init_fit) {
-		put_page(page);
-		return -EFAULT;
-	}
-
-	if (fdt_check_header(init_fit)) {
-		put_page(page);
-		return 0;
-	}
-
-	dsectors = get_capacity(bdev->bd_disk);
-	if (sectors)
-		dsectors = (dsectors>sectors)?sectors:dsectors;
-
-	dsize = dsectors << SECTOR_SHIFT;
-	size = fdt_totalsize(init_fit);
-
-	/* silently skip non-external-data legacy FIT images */
-	if (size > PAGE_SIZE) {
-		put_page(page);
-		return 0;
-	}
-
-	if (size >= dsize) {
-		state->access_beyond_eod = 1;
-		put_page(page);
-		return -EFBIG;
-	}
-
-	fit = kmemdup(init_fit, size, GFP_KERNEL);
-	put_page(page);
-	if (!fit)
-		return -ENOMEM;
-
-	np = of_find_node_by_path("/chosen");
-	if (np) {
-		/* new fitblk driver should take over if /chosen/rootdisk is defined */
-		if (of_get_property(np, "rootdisk", NULL))
-			return 0;
-
-		bootconf_c = of_get_property(np, "u-boot,bootconf", &bootconf_len);
-		if (bootconf_c && bootconf_len)
-			bootconf = kmemdup_nul(bootconf_c, bootconf_len, GFP_KERNEL);
-	}
-
-	if (bootconf) {
-		bootconf_term = strchr(bootconf, '#');
-		if (bootconf_term)
-			*bootconf_term = '\0';
-	}
-
-	config = fdt_path_offset(fit, FIT_CONFS_PATH);
-	if (config < 0) {
-		printk(KERN_ERR "FIT: Cannot find %s node: %d\n", FIT_CONFS_PATH, config);
-		ret = -ENOENT;
-		goto ret_out;
-	}
-
-	config_default = fdt_getprop(fit, config, FIT_DEFAULT_PROP, &config_default_len);
-
-	if (!config_default && !bootconf) {
-		printk(KERN_ERR "FIT: Cannot find default configuration\n");
-		ret = -ENOENT;
-		goto ret_out;
-	}
-
-	node = fdt_subnode_offset(fit, config, bootconf?:config_default);
-	if (node < 0) {
-		printk(KERN_ERR "FIT: Cannot find %s node: %d\n", bootconf?:config_default, node);
-		ret = -ENOENT;
-		goto ret_out;
-	}
-
-	config_description = fdt_getprop(fit, node, FIT_DESC_PROP, &config_description_len);
-	config_loadables = fdt_getprop(fit, node, FIT_LOADABLE_PROP, &config_loadables_len);
-
-	printk(KERN_DEBUG "FIT: %s configuration: \"%s\"%s%s%s\n",
-		bootconf?"Selected":"Default", bootconf?:config_default,
-		config_description?" (":"", config_description?:"", config_description?")":"");
-
-	if (!config_loadables || !config_loadables_len) {
-		printk(KERN_ERR "FIT: No loadables configured in \"%s\"\n", bootconf?:config_default);
-		ret = -ENOENT;
-		goto ret_out;
-	}
-
-	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
-	if (images < 0) {
-		printk(KERN_ERR "FIT: Cannot find %s node: %d\n", FIT_IMAGES_PATH, images);
-		ret = -EINVAL;
-		goto ret_out;
-	}
-
-	fdt_for_each_subnode(node, fit, images) {
-		image_name = fdt_get_name(fit, node, &image_name_len);
-		image_type = fdt_getprop(fit, node, FIT_TYPE_PROP, &image_type_len);
-		image_offset_be = fdt_getprop(fit, node, FIT_DATA_OFFSET_PROP, NULL);
-		image_pos_be = fdt_getprop(fit, node, FIT_DATA_POSITION_PROP, NULL);
-		image_len_be = fdt_getprop(fit, node, FIT_DATA_SIZE_PROP, NULL);
-		if (!image_name || !image_type || !image_len_be)
-			continue;
-
-		image_len = be32_to_cpu(*image_len_be);
-		if (!image_len)
-			continue;
-
-		if (image_offset_be)
-			image_pos = be32_to_cpu(*image_offset_be) + size;
-		else if (image_pos_be)
-			image_pos = be32_to_cpu(*image_pos_be);
-		else
-			continue;
-
-		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 - 1, image_name,
-			image_description?"(":"", image_description?:"", image_description?") ":"");
-
-		if (strcmp(image_type, FIT_FILESYSTEM_PROP))
-			continue;
-
-		/* check if sub-image is part of configured loadables */
-		found = false;
-		loadable = config_loadables;
-		loadables_rem_len = config_loadables_len;
-		while (loadables_rem_len > 1) {
-			loadable_len = strnlen(loadable, loadables_rem_len - 1) + 1;
-			loadables_rem_len -= loadable_len;
-			if (!strncmp(image_name, loadable, loadable_len)) {
-				found = true;
-				break;
-			}
-			loadable += loadable_len;
-		}
-		if (!found)
-			continue;
-
-		if (image_pos & ((1 << PAGE_SHIFT)-1)) {
-			printk(KERN_ERR "FIT: image %s start not aligned to page boundaries, skipping\n", image_name);
-			continue;
-		}
-
-		if (image_len & ((1 << PAGE_SHIFT)-1)) {
-			printk(KERN_ERR "FIT: sub-image %s end not aligned to page boundaries, skipping\n", image_name);
-			continue;
-		}
-
-		start_sect = image_pos >> SECTOR_SHIFT;
-		nr_sects = image_len >> SECTOR_SHIFT;
-		imgmaxsect = (imgmaxsect < (start_sect + nr_sects))?(start_sect + nr_sects):imgmaxsect;
-
-		if (start_sect + nr_sects > dsectors) {
-			state->access_beyond_eod = 1;
-			continue;
-		}
-
-		put_partition(state, ++(*slot), fit_start_sector + start_sect, nr_sects);
-		state->parts[*slot].flags = ADDPART_FLAG_READONLY;
-		state->parts[*slot].has_info = true;
-		info = &state->parts[*slot].info;
-
-		label_min = min_t(int, sizeof(info->volname) - 1, image_name_len);
-		strncpy(info->volname, image_name, label_min);
-		info->volname[label_min] = '\0';
-
-		snprintf(tmp, sizeof(tmp), "(%s)", info->volname);
-		strlcat(state->pp_buf, tmp, PAGE_SIZE);
-
-		/* Mark first loadable listed to be mounted as rootfs */
-		if (!strcmp(image_name, config_loadables)) {
-			select_rootfs = image_name;
-			state->parts[*slot].flags |= ADDPART_FLAG_ROOTDEV;
-		}
-	}
-
-	if (select_rootfs)
-		printk(KERN_DEBUG "FIT: selecting configured loadable \"%s\" to be root filesystem\n", select_rootfs);
-
-	if (add_remain && (imgmaxsect + MIN_FREE_SECT) < dsectors) {
-		put_partition(state, ++(*slot), fit_start_sector + imgmaxsect, dsectors - imgmaxsect);
-		state->parts[*slot].flags = 0;
-		info = &state->parts[*slot].info;
-		strcpy(info->volname, REMAIN_VOLNAME);
-		snprintf(tmp, sizeof(tmp), "(%s)", REMAIN_VOLNAME);
-		strlcat(state->pp_buf, tmp, PAGE_SIZE);
-	}
-ret_out:
-	kfree(bootconf);
-	kfree(fit);
-	return ret;
-}
-
-int fit_partition(struct parsed_partitions *state) {
-	int slot = 0;
-	return parse_fit_partitions(state, 0, 0, &slot, 0);
-}
diff --git a/target/linux/mediatek/filogic/config-6.6 b/target/linux/mediatek/filogic/config-6.6
index cb36d74e1d..818bcfa081 100644
--- a/target/linux/mediatek/filogic/config-6.6
+++ b/target/linux/mediatek/filogic/config-6.6
@@ -158,7 +158,6 @@ CONFIG_EINT_MTK=y
 CONFIG_EXCLUSIVE_SYSTEM_RAM=y
 CONFIG_EXT4_FS=y
 CONFIG_F2FS_FS=y
-CONFIG_FIT_PARTITION=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FRAME_POINTER=y
diff --git a/target/linux/mediatek/mt7622/config-6.6 b/target/linux/mediatek/mt7622/config-6.6
index fab9c7dbe6..cf445b2b71 100644
--- a/target/linux/mediatek/mt7622/config-6.6
+++ b/target/linux/mediatek/mt7622/config-6.6
@@ -164,7 +164,6 @@ CONFIG_EINT_MTK=y
 CONFIG_EXCLUSIVE_SYSTEM_RAM=y
 CONFIG_EXT4_FS=y
 CONFIG_F2FS_FS=y
-# CONFIG_FIT_PARTITION is not set
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FRAME_POINTER=y
diff --git a/target/linux/mediatek/mt7623/config-6.6 b/target/linux/mediatek/mt7623/config-6.6
index 9d6c5eed96..bb00bee8f3 100644
--- a/target/linux/mediatek/mt7623/config-6.6
+++ b/target/linux/mediatek/mt7623/config-6.6
@@ -224,7 +224,6 @@ CONFIG_FB_SYS_COPYAREA=y
 CONFIG_FB_SYS_FILLRECT=y
 CONFIG_FB_SYS_FOPS=y
 CONFIG_FB_SYS_IMAGEBLIT=y
-# CONFIG_FIT_PARTITION is not set
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FONT_8x16=y
diff --git a/target/linux/mediatek/mt7629/config-6.6 b/target/linux/mediatek/mt7629/config-6.6
index ec029de2fe..1748efab77 100644
--- a/target/linux/mediatek/mt7629/config-6.6
+++ b/target/linux/mediatek/mt7629/config-6.6
@@ -106,7 +106,6 @@ CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_EINT_MTK=y
 CONFIG_EXCLUSIVE_SYSTEM_RAM=y
-# CONFIG_FIT_PARTITION is not set
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FS_IOMAP=y
diff --git a/target/linux/mediatek/patches-6.6/041-block-fit-partition-parser.patch b/target/linux/mediatek/patches-6.6/041-block-fit-partition-parser.patch
deleted file mode 100644
index de91497a85..0000000000
--- a/target/linux/mediatek/patches-6.6/041-block-fit-partition-parser.patch
+++ /dev/null
@@ -1,216 +0,0 @@
-From 69357074558daf6ff24c9f58714935e9e095a865 Mon Sep 17 00:00:00 2001
-From: OpenWrt community <openwrt-devel at lists.openwrt.org>
-Date: Wed, 13 Jul 2022 13:37:33 +0200
-Subject: [PATCH] kernel: add block fit partition parser
-
----
- block/blk.h                     |  2 ++
- block/partitions/Kconfig        |  7 +++++++
- block/partitions/Makefile       |  1 +
- block/partitions/check.h        |  3 +++
- block/partitions/core.c         | 17 +++++++++++++++++
- block/partitions/efi.c          |  8 ++++++++
- block/partitions/efi.h          |  3 +++
- block/partitions/msdos.c        | 10 ++++++++++
- drivers/mtd/mtd_blkdevs.c       |  2 ++
- drivers/mtd/ubi/block.c         |  3 +++
- include/linux/msdos_partition.h |  1 +
- 11 files changed, 57 insertions(+)
-
---- a/block/blk.h
-+++ b/block/blk.h
-@@ -424,6 +424,8 @@ void blk_free_ext_minor(unsigned int min
- #define ADDPART_FLAG_NONE	0
- #define ADDPART_FLAG_RAID	1
- #define ADDPART_FLAG_WHOLEDISK	2
-+#define ADDPART_FLAG_READONLY	4
-+#define ADDPART_FLAG_ROOTDEV	8
- int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
- 		sector_t length);
- int bdev_del_partition(struct gendisk *disk, int partno);
---- a/block/partitions/Kconfig
-+++ b/block/partitions/Kconfig
-@@ -103,6 +103,13 @@ config ATARI_PARTITION
- 	  Say Y here if you would like to use hard disks under Linux which
- 	  were partitioned under the Atari OS.
- 
-+config FIT_PARTITION
-+	bool "Flattened-Image-Tree (FIT) partition support" if PARTITION_ADVANCED
-+	default n
-+	help
-+	  Say Y here if your system needs to mount the filesystem part of
-+	  a Flattened-Image-Tree (FIT) image commonly used with Das U-Boot.
-+
- config IBM_PARTITION
- 	bool "IBM disk label and partition support"
- 	depends on PARTITION_ADVANCED && S390
---- a/block/partitions/Makefile
-+++ b/block/partitions/Makefile
-@@ -8,6 +8,7 @@ obj-$(CONFIG_ACORN_PARTITION) += acorn.o
- obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
- obj-$(CONFIG_ATARI_PARTITION) += atari.o
- obj-$(CONFIG_AIX_PARTITION) += aix.o
-+obj-$(CONFIG_FIT_PARTITION) += fit.o
- obj-$(CONFIG_CMDLINE_PARTITION) += cmdline.o
- obj-$(CONFIG_MAC_PARTITION) += mac.o
- obj-$(CONFIG_LDM_PARTITION) += ldm.o
---- a/block/partitions/check.h
-+++ b/block/partitions/check.h
-@@ -57,6 +57,7 @@ int amiga_partition(struct parsed_partit
- int atari_partition(struct parsed_partitions *state);
- int cmdline_partition(struct parsed_partitions *state);
- int efi_partition(struct parsed_partitions *state);
-+int fit_partition(struct parsed_partitions *state);
- int ibm_partition(struct parsed_partitions *);
- int karma_partition(struct parsed_partitions *state);
- int ldm_partition(struct parsed_partitions *state);
-@@ -67,3 +68,5 @@ int sgi_partition(struct parsed_partitio
- int sun_partition(struct parsed_partitions *state);
- int sysv68_partition(struct parsed_partitions *state);
- int ultrix_partition(struct parsed_partitions *state);
-+
-+int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain);
---- a/block/partitions/core.c
-+++ b/block/partitions/core.c
-@@ -11,6 +11,9 @@
- #include <linux/vmalloc.h>
- #include <linux/raid/detect.h>
- #include <linux/property.h>
-+#ifdef CONFIG_FIT_PARTITION
-+#include <linux/root_dev.h>
-+#endif
- 
- #include "check.h"
- 
-@@ -48,6 +51,9 @@ static int (*const check_part[])(struct
- #ifdef CONFIG_EFI_PARTITION
- 	efi_partition,		/* this must come before msdos */
- #endif
-+#ifdef CONFIG_FIT_PARTITION
-+	fit_partition,
-+#endif
- #ifdef CONFIG_SGI_PARTITION
- 	sgi_partition,
- #endif
-@@ -464,6 +470,11 @@ static struct block_device *add_partitio
- 			goto out_del;
- 	}
- 
-+#ifdef CONFIG_FIT_PARTITION
-+	if (flags & ADDPART_FLAG_READONLY)
-+		bdev->bd_read_only = true;
-+#endif
-+
- 	/* everything is up and running, commence */
- 	err = xa_insert(&disk->part_tbl, partno, bdev, GFP_KERNEL);
- 	if (err)
-@@ -656,6 +667,11 @@ static bool blk_add_partition(struct gen
- 	    (state->parts[p].flags & ADDPART_FLAG_RAID))
- 		md_autodetect_dev(part->bd_dev);
- 
-+#ifdef CONFIG_FIT_PARTITION
-+	if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0)
-+		ROOT_DEV = part->bd_dev;
-+#endif
-+
- 	return true;
- }
- 
---- a/block/partitions/efi.c
-+++ b/block/partitions/efi.c
-@@ -716,6 +716,9 @@ int efi_partition(struct parsed_partitio
- 	gpt_entry *ptes = NULL;
- 	u32 i;
- 	unsigned ssz = queue_logical_block_size(state->disk->queue) / 512;
-+#ifdef CONFIG_FIT_PARTITION
-+	u32 extra_slot = 64;
-+#endif
- 
- 	if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
- 		kfree(gpt);
-@@ -749,6 +752,11 @@ int efi_partition(struct parsed_partitio
- 				ARRAY_SIZE(ptes[i].partition_name));
- 		utf16_le_to_7bit(ptes[i].partition_name, label_max, info->volname);
- 		state->parts[i + 1].has_info = true;
-+#ifdef CONFIG_FIT_PARTITION
-+		/* If this is a U-Boot FIT volume it may have subpartitions */
-+		if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID))
-+			(void) parse_fit_partitions(state, start * ssz, size * ssz, &extra_slot, 1);
-+#endif
- 	}
- 	kfree(ptes);
- 	kfree(gpt);
---- a/block/partitions/efi.h
-+++ b/block/partitions/efi.h
-@@ -51,6 +51,9 @@
- #define PARTITION_LINUX_LVM_GUID \
-     EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
-               0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
-+#define PARTITION_LINUX_FIT_GUID \
-+    EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \
-+              0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)
- 
- typedef struct _gpt_header {
- 	__le64 signature;
---- a/block/partitions/msdos.c
-+++ b/block/partitions/msdos.c
-@@ -564,6 +564,15 @@ 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);
-@@ -575,6 +584,7 @@ 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/drivers/mtd/mtd_blkdevs.c
-+++ b/drivers/mtd/mtd_blkdevs.c
-@@ -359,7 +359,9 @@ int add_mtd_blktrans_dev(struct mtd_blkt
- 	} else {
- 		snprintf(gd->disk_name, sizeof(gd->disk_name),
- 			 "%s%d", tr->name, new->devnum);
--		gd->flags |= GENHD_FL_NO_PART;
-+
-+		if (!IS_ENABLED(CONFIG_FIT_PARTITION) || mtd_type_is_nand(new->mtd))
-+			gd->flags |= GENHD_FL_NO_PART;
- 	}
- 
- 	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);
---- a/drivers/mtd/ubi/block.c
-+++ b/drivers/mtd/ubi/block.c
-@@ -410,7 +410,9 @@ int ubiblock_create(struct ubi_volume_in
- 		ret = -ENODEV;
- 		goto out_cleanup_disk;
- 	}
--	gd->flags |= GENHD_FL_NO_PART;
-+	if (!IS_ENABLED(CONFIG_FIT_PARTITION))
-+		gd->flags |= GENHD_FL_NO_PART;
-+
- 	gd->private_data = dev;
- 	sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
- 	set_capacity(gd, disk_capacity);
---- 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,
- 




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