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generic: 5.15: get uImage.FIT partition parser ready

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Prepare uImage.FIT partition parser for Linux 5.15

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
This commit is contained in:
Daniel Golle 2022-01-07 17:39:42 +00:00 committed by AmadeusGhost
parent 967902aff5
commit a4a0faa748
3 changed files with 31 additions and 110 deletions
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10
target/linux/generic/files/block/partitions/fit.c
View File

@ -20,6 +20,7 @@
#include <linux/of_device.h>
#include <linux/of_fdt.h>
#include <linux/libfdt.h>
#include <linux/version.h>
#include "check.h"
@ -72,7 +73,12 @@
int parse_fit_partitions(struct parsed_partitions *state, u64 fit_start_sector, u64 sectors, int *slot, int add_remain)
{
struct address_space *mapping = state->bdev->bd_inode->i_mapping;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
struct block_device *bdev = state->disk->part0;
#else
struct block_device *bdev = state->bdev;
#endif
struct address_space *mapping = bdev->bd_inode->i_mapping;
struct page *page;
void *fit, *init_fit;
struct partition_meta_info *info;
@ -107,7 +113,7 @@ int parse_fit_partitions(struct parsed_partitions *state, u64 fit_start_sector,
return 0;
}
dsectors = get_capacity(state->bdev->bd_disk);
dsectors = get_capacity(bdev->bd_disk);
if (sectors)
dsectors = (dsectors>sectors)?sectors:dsectors;

84
target/linux/generic/hack-5.15/401-mtd-super-don-t-reply-on-mtdblock-device-minor.patch
View File

@ -1,84 +0,0 @@
From f9760b158f610b1792a222cc924073724c061bfb Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Wed, 7 Apr 2021 22:37:57 +0100
Subject: [PATCH 1/2] mtd: super: don't reply on mtdblock device minor
To: linux-mtd@lists.infradead.org
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
Richard Weinberger <richard@nod.at>,
Miquel Raynal <miquel.raynal@bootlin.com>,
David Woodhouse <dwmw2@infradead.org>
For blktrans devices with partitions (ie. part_bits != 0) the
assumption that the minor number of the mtdblock device matches
the mtdnum doesn't hold true.
Properly resolve mtd device from blktrans layer instead.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/mtd/mtdsuper.c | 33 ++++++++++++++++++++++++++-------
1 file changed, 26 insertions(+), 7 deletions(-)
--- a/drivers/mtd/mtdsuper.c
+++ b/drivers/mtd/mtdsuper.c
@@ -9,6 +9,7 @@
*/
#include <linux/mtd/super.h>
+#include <linux/mtd/blktrans.h>
#include <linux/namei.h>
#include <linux/export.h>
#include <linux/ctype.h>
@@ -120,8 +121,9 @@ int get_tree_mtd(struct fs_context *fc,
struct fs_context *fc))
{
#ifdef CONFIG_BLOCK
- dev_t dev;
- int ret;
+ struct mtd_blktrans_dev *blktrans_dev;
+ struct block_device *bdev;
+ int ret, part_bits;
#endif
int mtdnr;
@@ -169,16 +171,36 @@ int get_tree_mtd(struct fs_context *fc,
/* try the old way - the hack where we allowed users to mount
* /dev/mtdblock$(n) but didn't actually _use_ the blockdev
*/
- ret = lookup_bdev(fc->source, &dev);
- if (ret) {
+ bdev = blkdev_get_by_path(fc->source, FMODE_READ, NULL);
+ if (IS_ERR(bdev)) {
+ ret = PTR_ERR(bdev);
errorf(fc, "MTD: Couldn't look up '%s': %d", fc->source, ret);
return ret;
}
- pr_debug("MTDSB: lookup_bdev() returned 0\n");
+ pr_debug("MTDSB: blkdev_get_by_path() returned 0\n");
- if (MAJOR(dev) == MTD_BLOCK_MAJOR)
- return mtd_get_sb_by_nr(fc, MINOR(dev), fill_super);
+ if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) {
+ if (!bdev->bd_disk) {
+ blkdev_put(bdev, FMODE_READ);
+ BUG();
+ return -EINVAL;
+ }
+ blktrans_dev = (struct mtd_blktrans_dev *)(bdev->bd_disk->private_data);
+ if (!blktrans_dev || !blktrans_dev->tr) {
+ blkdev_put(bdev, FMODE_READ);
+ BUG();
+ return -EINVAL;
+ }
+ mtdnr = blktrans_dev->devnum;
+ part_bits = blktrans_dev->tr->part_bits;
+ blkdev_put(bdev, FMODE_READ);
+ if (MINOR(bdev->bd_dev) != (mtdnr << part_bits))
+ return -EINVAL;
+
+ return mtd_get_sb_by_nr(fc, mtdnr, fill_super);
+ }
+ blkdev_put(bdev, FMODE_READ);
#endif /* CONFIG_BLOCK */
if (!(fc->sb_flags & SB_SILENT))

47
target/linux/generic/hack-5.15/410-block-fit-partition-parser.patch
View File

@ -98,30 +98,6 @@
return true;
}
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -428,6 +428,9 @@ int ubiblock_create(struct ubi_volume_in
goto out_cleanup_disk;
}
gd->private_data = dev;
+#ifdef CONFIG_FIT_PARTITION
+ gd->flags |= GENHD_FL_EXT_DEVT;
+#endif
sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
set_capacity(gd, disk_capacity);
dev->gd = gd;
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -345,6 +345,9 @@ int add_mtd_blktrans_dev(struct mtd_blkt
gd->first_minor = (new->devnum) << tr->part_bits;
gd->minors = 1 << tr->part_bits;
gd->fops = &mtd_block_ops;
+#ifdef CONFIG_FIT_PARTITION
+ gd->flags |= GENHD_FL_EXT_DEVT;
+#endif
if (tr->part_bits)
if (new->devnum < 26)
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -716,6 +716,9 @@ int efi_partition(struct parsed_partitio
@ -184,6 +160,29 @@
{0, NULL},
};
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -345,6 +345,8 @@ int add_mtd_blktrans_dev(struct mtd_blkt
gd->first_minor = (new->devnum) << tr->part_bits;
gd->minors = 1 << tr->part_bits;
gd->fops = &mtd_block_ops;
+ if (IS_ENABLED(CONFIG_FIT_PARTITION) && !mtd_type_is_nand(new->mtd))
+ gd->flags |= GENHD_FL_EXT_DEVT;
if (tr->part_bits)
if (new->devnum < 26)
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -428,6 +428,9 @@ int ubiblock_create(struct ubi_volume_in
goto out_cleanup_disk;
}
gd->private_data = dev;
+#ifdef CONFIG_FIT_PARTITION
+ gd->flags |= GENHD_FL_EXT_DEVT;
+#endif
sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
set_capacity(gd, disk_capacity);
dev->gd = gd;
--- a/include/linux/msdos_partition.h
+++ b/include/linux/msdos_partition.h
@@ -31,6 +31,7 @@ enum msdos_sys_ind {