| Alexey Romanov | c9f6113 | 2024-07-18 08:45:27 +0300 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * (C) Copyright 2024 SaluteDevices, Inc. |
| 4 | * |
| 5 | * Author: Alexey Romanov <avromanov@salutedevices.com> |
| 6 | */ |
| 7 | |
| 8 | #include <memalign.h> |
| 9 | #include <part.h> |
| 10 | #include <ubi_uboot.h> |
| 11 | |
| 12 | static inline struct ubi_device *get_ubi_device(void) |
| 13 | { |
| 14 | return ubi_devices[0]; |
| 15 | } |
| 16 | |
| 17 | static struct ubi_volume *ubi_get_volume_by_index(int vol_id) |
| 18 | { |
| 19 | struct ubi_device *ubi = get_ubi_device(); |
| 20 | int i; |
| 21 | |
| 22 | for (i = 0; i < (ubi->vtbl_slots + 1); i++) { |
| 23 | struct ubi_volume *volume = ubi->volumes[i]; |
| 24 | |
| 25 | if (!volume) |
| 26 | continue; |
| 27 | |
| 28 | if (volume->vol_id >= UBI_INTERNAL_VOL_START) |
| 29 | continue; |
| 30 | |
| 31 | if (volume->vol_id == vol_id) |
| 32 | return volume; |
| 33 | } |
| 34 | |
| 35 | return NULL; |
| 36 | } |
| 37 | |
| 38 | static int __maybe_unused part_get_info_ubi(struct blk_desc *dev_desc, int part_idx, |
| 39 | struct disk_partition *info) |
| 40 | { |
| 41 | struct ubi_volume *vol; |
| 42 | |
| 43 | /* |
| 44 | * We must use part_idx - 1 instead of part_idx, because |
| 45 | * part_get_info_by_name() start indexing at 1, not 0. |
| 46 | * ubi volumes idexed starting at 0 |
| 47 | */ |
| 48 | vol = ubi_get_volume_by_index(part_idx - 1); |
| 49 | if (!vol) |
| 50 | return 0; |
| 51 | |
| 52 | snprintf(info->name, PART_NAME_LEN, vol->name); |
| 53 | |
| 54 | info->start = 0; |
| 55 | info->size = (unsigned long)vol->used_bytes / dev_desc->blksz; |
| 56 | info->blksz = dev_desc->blksz; |
| 57 | |
| 58 | /* Save UBI volume ID in blk device descriptor */ |
| 59 | dev_desc->hwpart = vol->vol_id; |
| 60 | |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static void __maybe_unused part_print_ubi(struct blk_desc *dev_desc) |
| 65 | { |
| 66 | struct ubi_device *ubi = get_ubi_device(); |
| 67 | int i; |
| 68 | |
| 69 | for (i = 0; i < (ubi->vtbl_slots + 1); i++) { |
| 70 | struct ubi_volume *volume = ubi->volumes[i]; |
| 71 | |
| 72 | if (!volume) |
| 73 | continue; |
| 74 | |
| 75 | if (volume->vol_id >= UBI_INTERNAL_VOL_START) |
| 76 | continue; |
| 77 | |
| 78 | printf("%d: %s\n", volume->vol_id, volume->name); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | static int part_test_ubi(struct blk_desc *dev_desc) |
| 83 | { |
| 84 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
| 85 | |
| 86 | if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1) |
| 87 | return -1; |
| 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | U_BOOT_PART_TYPE(ubi) = { |
| 93 | .name = "ubi", |
| 94 | .part_type = PART_TYPE_UBI, |
| 95 | .max_entries = UBI_ENTRY_NUMBERS, |
| 96 | .get_info = part_get_info_ptr(part_get_info_ubi), |
| 97 | .print = part_print_ptr(part_print_ubi), |
| 98 | .test = part_test_ubi, |
| 99 | }; |