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aa5b67ce22
UBI partition is abstraction over UBI volumes. Can be used by UBI block device. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Heiko Schocher <hs@denx.de> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2024 SaluteDevices, Inc.
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*
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* Author: Alexey Romanov <avromanov@salutedevices.com>
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*/
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#include <memalign.h>
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#include <part.h>
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#include <ubi_uboot.h>
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static inline struct ubi_device *get_ubi_device(void)
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{
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return ubi_devices[0];
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}
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static struct ubi_volume *ubi_get_volume_by_index(int vol_id)
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{
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struct ubi_device *ubi = get_ubi_device();
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int i;
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for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
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struct ubi_volume *volume = ubi->volumes[i];
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if (!volume)
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continue;
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if (volume->vol_id >= UBI_INTERNAL_VOL_START)
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continue;
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if (volume->vol_id == vol_id)
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return volume;
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}
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return NULL;
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}
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static int __maybe_unused part_get_info_ubi(struct blk_desc *dev_desc, int part_idx,
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struct disk_partition *info)
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{
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struct ubi_volume *vol;
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/*
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* We must use part_idx - 1 instead of part_idx, because
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* part_get_info_by_name() start indexing at 1, not 0.
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* ubi volumes idexed starting at 0
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*/
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vol = ubi_get_volume_by_index(part_idx - 1);
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if (!vol)
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return 0;
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snprintf(info->name, PART_NAME_LEN, vol->name);
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info->start = 0;
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info->size = (unsigned long)vol->used_bytes / dev_desc->blksz;
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info->blksz = dev_desc->blksz;
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/* Save UBI volume ID in blk device descriptor */
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dev_desc->hwpart = vol->vol_id;
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return 0;
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}
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static void __maybe_unused part_print_ubi(struct blk_desc *dev_desc)
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{
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struct ubi_device *ubi = get_ubi_device();
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int i;
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for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
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struct ubi_volume *volume = ubi->volumes[i];
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if (!volume)
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continue;
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if (volume->vol_id >= UBI_INTERNAL_VOL_START)
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continue;
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printf("%d: %s\n", volume->vol_id, volume->name);
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}
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}
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static int part_test_ubi(struct blk_desc *dev_desc)
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{
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1)
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return -1;
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return 0;
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}
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U_BOOT_PART_TYPE(ubi) = {
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.name = "ubi",
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.part_type = PART_TYPE_UBI,
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.max_entries = UBI_ENTRY_NUMBERS,
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.get_info = part_get_info_ptr(part_get_info_ubi),
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.print = part_print_ptr(part_print_ubi),
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.test = part_test_ubi,
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};
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