From: Daniel Golle Date: Sat, 27 Feb 2021 03:18:46 +0000 (+0000) Subject: image: extend FIT partition parser for use on eMMC/SDcard X-Git-Tag: v22.03.0-rc1~3304 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6b0295a47d0e101a9c423b76fd4b6e12deebe651;p=openwrt%2Fstaging%2Fpepe2k.git image: extend FIT partition parser for use on eMMC/SDcard Introduce a magic GUID_PARTITION_LINUX_FIT_GUID to designate a GPT partition to be interpreted by the FIT partition parser. In that way, sub-partitions for (external-data) uImage.FIT stored directly in a partition can be split, similar like we do for devices with raw flash storage. Signed-off-by: Daniel Golle --- diff --git a/target/linux/generic/files/block/partitions/fit.c b/target/linux/generic/files/block/partitions/fit.c index 8ccbcf2fc2..c0d9642505 100644 --- a/target/linux/generic/files/block/partitions/fit.c +++ b/target/linux/generic/files/block/partitions/fit.c @@ -67,17 +67,20 @@ #define FIT_MAX_HASH_LEN HASH_MAX_DIGEST_SIZE -int fit_partition(struct parsed_partitions *state) +#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 address_space *mapping = state->bdev->bd_inode->i_mapping; - struct page *page = read_mapping_page(mapping, 0, NULL); + struct page *page; void *fit, *init_fit; struct partition_meta_info *info; char tmp[sizeof(info->volname)]; - u64 dsize, dsectors; + 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, slot; + int ret = 1, node, images, config; const char *image_name, *image_type, *image_description, *config_default, *config_description, *config_loadables; int image_name_len, image_type_len, image_description_len, config_default_len, @@ -85,6 +88,10 @@ int fit_partition(struct parsed_partitions *state) sector_t start_sect, nr_sects; size_t label_min; + 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 (!page) return -ENOMEM; @@ -101,6 +108,9 @@ int fit_partition(struct parsed_partitions *state) } dsectors = get_capacity(state->bdev->bd_disk); + if (sectors) + dsectors = (dsectors>sectors)?sectors:dsectors; + dsize = dsectors << SECTOR_SHIFT; printk(KERN_DEBUG "FIT: volume size: %llu sectors (%llu bytes)\n", dsectors, dsize); @@ -158,7 +168,6 @@ int fit_partition(struct parsed_partitions *state) goto ret_out; } - slot = 1; 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); @@ -200,15 +209,16 @@ int fit_partition(struct parsed_partitions *state) 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, start_sect, nr_sects); - state->parts[slot].flags = 0; - info = &state->parts[slot].info; + put_partition(state, ++(*slot), fit_start_sector + start_sect, nr_sects); + state->parts[*slot].flags = 0; + info = &state->parts[*slot].info; label_min = min_t(int, sizeof(info->volname) - 1, image_name_len); strncpy(info->volname, image_name, label_min); @@ -217,17 +227,28 @@ int fit_partition(struct parsed_partitions *state) snprintf(tmp, sizeof(tmp), "(%s)", info->volname); strlcat(state->pp_buf, tmp, PAGE_SIZE); - state->parts[slot].has_info = true; + state->parts[*slot].has_info = true; if (config_loadables && !strcmp(image_name, config_loadables)) { printk(KERN_DEBUG "FIT: selecting configured loadable %s to be root filesystem\n", image_name); - state->parts[slot].flags |= ADDPART_FLAG_ROOTDEV; + state->parts[*slot].flags |= ADDPART_FLAG_ROOTDEV; } - - ++slot; } + 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(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/generic/hack-5.10/400-block-fit-partition-parser.patch b/target/linux/generic/hack-5.10/400-block-fit-partition-parser.patch index 9eaf8637d0..c703000c0a 100644 --- a/target/linux/generic/hack-5.10/400-block-fit-partition-parser.patch +++ b/target/linux/generic/hack-5.10/400-block-fit-partition-parser.patch @@ -44,18 +44,26 @@ int ibm_partition(struct parsed_partitions *); int karma_partition(struct parsed_partitions *state); int ldm_partition(struct parsed_partitions *state); +@@ -68,3 +69,5 @@ 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 -@@ -10,6 +10,8 @@ +@@ -10,6 +10,10 @@ #include #include #include ++#ifdef CONFIG_FIT_PARTITION +#include ++#endif + #include "check.h" static int (*check_part[])(struct parsed_partitions *) = { -@@ -46,6 +48,9 @@ static int (*check_part[])(struct parsed +@@ -46,6 +50,9 @@ static int (*check_part[])(struct parsed #ifdef CONFIG_EFI_PARTITION efi_partition, /* this must come before msdos */ #endif @@ -65,12 +73,49 @@ #ifdef CONFIG_SGI_PARTITION sgi_partition, #endif -@@ -694,6 +699,9 @@ static bool blk_add_partition(struct gen +@@ -215,6 +222,18 @@ static ssize_t part_discard_alignment_sh + p->start_sect)); + } + ++static ssize_t part_name_show(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct hd_struct *p = dev_to_part(dev); ++ ++ if (p->info && p->info->volname) ++ return sprintf(buf, "%s\n", p->info->volname); ++ ++ buf[0] = '\0'; ++ return 0; ++} ++ + static DEVICE_ATTR(partition, 0444, part_partition_show, NULL); + static DEVICE_ATTR(start, 0444, part_start_show, NULL); + static DEVICE_ATTR(size, 0444, part_size_show, NULL); +@@ -223,6 +242,7 @@ static DEVICE_ATTR(alignment_offset, 044 + static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL); + static DEVICE_ATTR(stat, 0444, part_stat_show, NULL); + static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL); ++static DEVICE_ATTR(name, 0444, part_name_show, NULL); + #ifdef CONFIG_FAIL_MAKE_REQUEST + static struct device_attribute dev_attr_fail = + __ATTR(make-it-fail, 0644, part_fail_show, part_fail_store); +@@ -237,6 +257,7 @@ static struct attribute *part_attrs[] = + &dev_attr_discard_alignment.attr, + &dev_attr_stat.attr, + &dev_attr_inflight.attr, ++ &dev_attr_name.attr, + #ifdef CONFIG_FAIL_MAKE_REQUEST + &dev_attr_fail.attr, + #endif +@@ -694,6 +715,11 @@ static bool blk_add_partition(struct gen (state->parts[p].flags & ADDPART_FLAG_RAID)) md_autodetect_dev(part_to_dev(part)->devt); ++#ifdef CONFIG_FIT_PARTITION + if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0) + ROOT_DEV = part_to_dev(part)->devt; ++#endif + return true; } @@ -94,3 +139,62 @@ sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id); set_capacity(gd, disk_capacity); dev->gd = gd; +--- a/block/partitions/efi.c ++++ b/block/partitions/efi.c +@@ -704,7 +704,7 @@ int efi_partition(struct parsed_partitio + { + gpt_header *gpt = NULL; + gpt_entry *ptes = NULL; +- u32 i; ++ u32 i, slot = 0; + unsigned ssz = bdev_logical_block_size(state->bdev) / 512; + + if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) { +@@ -722,23 +722,30 @@ int efi_partition(struct parsed_partitio + u64 size = le64_to_cpu(ptes[i].ending_lba) - + le64_to_cpu(ptes[i].starting_lba) + 1ULL; + +- if (!is_pte_valid(&ptes[i], last_lba(state->bdev))) ++ if (!is_pte_valid(&ptes[i], last_lba(state->bdev))) { ++ ++slot; + continue; ++ } + +- put_partition(state, i+1, start * ssz, size * ssz); ++ put_partition(state, ++slot, start * ssz, size * ssz); + + /* If this is a RAID volume, tell md */ + if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_RAID_GUID)) +- state->parts[i + 1].flags = ADDPART_FLAG_RAID; ++ state->parts[slot].flags = ADDPART_FLAG_RAID; + +- info = &state->parts[i + 1].info; ++ info = &state->parts[slot].info; + efi_guid_to_str(&ptes[i].unique_partition_guid, info->uuid); + + /* Naively convert UTF16-LE to 7 bits. */ + label_max = min(ARRAY_SIZE(info->volname) - 1, + 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; ++ state->parts[slot].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, &slot, 1); ++#endif + } + kfree(ptes); + kfree(gpt); +--- a/block/partitions/efi.h ++++ b/block/partitions/efi.h +@@ -52,6 +52,9 @@ + #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; diff --git a/target/linux/generic/hack-5.4/400-block-fit-partition-parser.patch b/target/linux/generic/hack-5.4/400-block-fit-partition-parser.patch index 13cf5e8ca0..1f756fac9b 100644 --- a/target/linux/generic/hack-5.4/400-block-fit-partition-parser.patch +++ b/target/linux/generic/hack-5.4/400-block-fit-partition-parser.patch @@ -45,20 +45,60 @@ dev->gd = gd; --- a/block/partition-generic.c +++ b/block/partition-generic.c -@@ -18,6 +18,7 @@ +@@ -18,6 +18,10 @@ #include #include #include ++#ifdef CONFIG_FIT_PARTITION +#include ++#endif ++ #include "partitions/check.h" -@@ -634,6 +635,8 @@ rescan: +@@ -180,6 +184,18 @@ ssize_t part_fail_store(struct device *d + } + #endif + ++static ssize_t part_name_show(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct hd_struct *p = dev_to_part(dev); ++ ++ if (p->info && p->info->volname) ++ return sprintf(buf, "%s\n", p->info->volname); ++ ++ buf[0] = '\0'; ++ return 0; ++} ++ + static DEVICE_ATTR(partition, 0444, part_partition_show, NULL); + static DEVICE_ATTR(start, 0444, part_start_show, NULL); + static DEVICE_ATTR(size, 0444, part_size_show, NULL); +@@ -188,6 +204,7 @@ static DEVICE_ATTR(alignment_offset, 044 + static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL); + static DEVICE_ATTR(stat, 0444, part_stat_show, NULL); + static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL); ++static DEVICE_ATTR(name, 0444, part_name_show, NULL); + #ifdef CONFIG_FAIL_MAKE_REQUEST + static struct device_attribute dev_attr_fail = + __ATTR(make-it-fail, 0644, part_fail_show, part_fail_store); +@@ -202,6 +219,7 @@ static struct attribute *part_attrs[] = + &dev_attr_discard_alignment.attr, + &dev_attr_stat.attr, + &dev_attr_inflight.attr, ++ &dev_attr_name.attr, + #ifdef CONFIG_FAIL_MAKE_REQUEST + &dev_attr_fail.attr, + #endif +@@ -634,6 +652,10 @@ rescan: if (state->parts[p].flags & ADDPART_FLAG_RAID) md_autodetect_dev(part_to_dev(part)->devt); #endif ++#ifdef CONFIG_FIT_PARTITION + if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0) + ROOT_DEV = part_to_dev(part)->devt; ++#endif } free_partitions(state); return 0; @@ -94,6 +134,67 @@ extern void blk_free_devt(dev_t devt); --- /dev/null +++ b/block/partitions/fit.h -@@ -0,0 +1,2 @@ -+/* SPDX-License-Identifier: GPL-2.0 */ +@@ -0,0 +1,3 @@ ++/* SPDX-License-Identifier: GPL-2.0-only */ +int fit_partition(struct parsed_partitions *); ++int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain); +--- a/block/partitions/efi.c ++++ b/block/partitions/efi.c +@@ -679,7 +679,7 @@ int efi_partition(struct parsed_partitio + { + gpt_header *gpt = NULL; + gpt_entry *ptes = NULL; +- u32 i; ++ u32 i, slot = 0; + unsigned ssz = bdev_logical_block_size(state->bdev) / 512; + + if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) { +@@ -698,16 +698,18 @@ int efi_partition(struct parsed_partitio + u64 size = le64_to_cpu(ptes[i].ending_lba) - + le64_to_cpu(ptes[i].starting_lba) + 1ULL; + +- if (!is_pte_valid(&ptes[i], last_lba(state->bdev))) ++ if (!is_pte_valid(&ptes[i], last_lba(state->bdev))) { ++ ++slot; + continue; ++ } + +- put_partition(state, i+1, start * ssz, size * ssz); ++ put_partition(state, ++slot, start * ssz, size * ssz); + + /* If this is a RAID volume, tell md */ + if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_RAID_GUID)) +- state->parts[i + 1].flags = ADDPART_FLAG_RAID; ++ state->parts[slot].flags = ADDPART_FLAG_RAID; + +- info = &state->parts[i + 1].info; ++ info = &state->parts[slot].info; + efi_guid_to_str(&ptes[i].unique_partition_guid, info->uuid); + + /* Naively convert UTF16-LE to 7 bits. */ +@@ -721,7 +723,12 @@ int efi_partition(struct parsed_partitio + info->volname[label_count] = c; + label_count++; + } +- state->parts[i + 1].has_info = true; ++ state->parts[slot].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, &slot, 1); ++#endif + } + kfree(ptes); + kfree(gpt); +--- a/block/partitions/efi.h ++++ b/block/partitions/efi.h +@@ -52,6 +52,9 @@ + #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;