177 lines
5.5 KiB
Diff
177 lines
5.5 KiB
Diff
--- a/block/partitions/Kconfig
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+++ b/block/partitions/Kconfig
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@@ -101,6 +101,13 @@ config ATARI_PARTITION
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Say Y here if you would like to use hard disks under Linux which
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were partitioned under the Atari OS.
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+config FIT_PARTITION
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+ bool "Flattened-Image-Tree (FIT) partition support" if PARTITION_ADVANCED
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+ default n
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+ help
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+ Say Y here if your system needs to mount the filesystem part of
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+ a Flattened-Image-Tree (FIT) image commonly used with Das U-Boot.
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+
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config IBM_PARTITION
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bool "IBM disk label and partition support"
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depends on PARTITION_ADVANCED && S390
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--- a/block/partitions/Makefile
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+++ b/block/partitions/Makefile
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@@ -9,6 +9,7 @@ obj-$(CONFIG_ACORN_PARTITION) += acorn.o
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obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
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obj-$(CONFIG_ATARI_PARTITION) += atari.o
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obj-$(CONFIG_AIX_PARTITION) += aix.o
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+obj-$(CONFIG_FIT_PARTITION) += fit.o
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obj-$(CONFIG_CMDLINE_PARTITION) += cmdline.o
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obj-$(CONFIG_MAC_PARTITION) += mac.o
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obj-$(CONFIG_LDM_PARTITION) += ldm.o
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--- a/drivers/mtd/ubi/block.c
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+++ b/drivers/mtd/ubi/block.c
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@@ -396,7 +396,7 @@ int ubiblock_create(struct ubi_volume_in
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dev->leb_size = vi->usable_leb_size;
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/* Initialize the gendisk of this ubiblock device */
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- gd = alloc_disk(1);
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+ gd = alloc_disk(0);
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if (!gd) {
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pr_err("UBI: block: alloc_disk failed\n");
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ret = -ENODEV;
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@@ -413,6 +413,7 @@ int ubiblock_create(struct ubi_volume_in
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goto out_put_disk;
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}
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gd->private_data = dev;
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+ gd->flags |= GENHD_FL_EXT_DEVT;
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sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
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set_capacity(gd, disk_capacity);
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dev->gd = gd;
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--- a/block/partition-generic.c
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+++ b/block/partition-generic.c
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@@ -18,6 +18,10 @@
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#include <linux/ctype.h>
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#include <linux/genhd.h>
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#include <linux/blktrace_api.h>
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+#ifdef CONFIG_FIT_PARTITION
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+#include <linux/root_dev.h>
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+#endif
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+
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#include "partitions/check.h"
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@@ -180,6 +184,18 @@ ssize_t part_fail_store(struct device *d
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}
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#endif
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+static ssize_t part_name_show(struct device *dev,
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+ struct device_attribute *attr, char *buf)
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+{
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+ struct hd_struct *p = dev_to_part(dev);
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+
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+ if (p->info && p->info->volname)
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+ return sprintf(buf, "%s\n", p->info->volname);
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+
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+ buf[0] = '\0';
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+ return 0;
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+}
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+
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static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
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static DEVICE_ATTR(start, 0444, part_start_show, NULL);
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static DEVICE_ATTR(size, 0444, part_size_show, NULL);
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@@ -188,6 +204,7 @@ static DEVICE_ATTR(alignment_offset, 044
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static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL);
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static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
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static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
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+static DEVICE_ATTR(name, 0444, part_name_show, NULL);
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#ifdef CONFIG_FAIL_MAKE_REQUEST
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static struct device_attribute dev_attr_fail =
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__ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
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@@ -202,6 +219,7 @@ static struct attribute *part_attrs[] =
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&dev_attr_discard_alignment.attr,
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&dev_attr_stat.attr,
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&dev_attr_inflight.attr,
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+ &dev_attr_name.attr,
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#ifdef CONFIG_FAIL_MAKE_REQUEST
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&dev_attr_fail.attr,
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#endif
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@@ -634,6 +652,10 @@ rescan:
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if (state->parts[p].flags & ADDPART_FLAG_RAID)
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md_autodetect_dev(part_to_dev(part)->devt);
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#endif
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+#ifdef CONFIG_FIT_PARTITION
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+ if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0)
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+ ROOT_DEV = part_to_dev(part)->devt;
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+#endif
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}
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free_partitions(state);
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return 0;
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--- a/block/partitions/check.c
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+++ b/block/partitions/check.c
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@@ -33,6 +33,7 @@
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#include "ibm.h"
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#include "ultrix.h"
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#include "efi.h"
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+#include "fit.h"
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#include "karma.h"
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#include "sysv68.h"
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#include "cmdline.h"
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@@ -73,6 +74,9 @@ static int (*check_part[])(struct parsed
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#ifdef CONFIG_EFI_PARTITION
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efi_partition, /* this must come before msdos */
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#endif
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+#ifdef CONFIG_FIT_PARTITION
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+ fit_partition,
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+#endif
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#ifdef CONFIG_SGI_PARTITION
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sgi_partition,
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#endif
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--- a/include/linux/genhd.h
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+++ b/include/linux/genhd.h
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@@ -614,6 +614,7 @@ struct unixware_disklabel {
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#define ADDPART_FLAG_NONE 0
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#define ADDPART_FLAG_RAID 1
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#define ADDPART_FLAG_WHOLEDISK 2
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+#define ADDPART_FLAG_ROOTDEV 4
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extern int blk_alloc_devt(struct hd_struct *part, dev_t *devt);
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extern void blk_free_devt(dev_t devt);
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--- /dev/null
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+++ b/block/partitions/fit.h
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@@ -0,0 +1,3 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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+int fit_partition(struct parsed_partitions *);
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+int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain);
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--- a/block/partitions/efi.c
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+++ b/block/partitions/efi.c
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@@ -681,6 +681,9 @@ int efi_partition(struct parsed_partitio
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gpt_entry *ptes = NULL;
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u32 i;
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unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
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+#ifdef CONFIG_FIT_PARTITION
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+ u32 extra_slot = 64;
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+#endif
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if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
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kfree(gpt);
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@@ -722,6 +725,11 @@ int efi_partition(struct parsed_partitio
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label_count++;
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}
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state->parts[i + 1].has_info = true;
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+#ifdef CONFIG_FIT_PARTITION
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+ /* If this is a U-Boot FIT volume it may have subpartitions */
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+ if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID))
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+ (void) parse_fit_partitions(state, start * ssz, size * ssz, &extra_slot, 1);
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+#endif
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}
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kfree(ptes);
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kfree(gpt);
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--- a/block/partitions/efi.h
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+++ b/block/partitions/efi.h
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@@ -52,6 +52,9 @@
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#define PARTITION_LINUX_LVM_GUID \
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EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
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0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
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+#define PARTITION_LINUX_FIT_GUID \
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+ EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \
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+ 0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)
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typedef struct _gpt_header {
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__le64 signature;
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