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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * BTRFS filesystem implementation for U-Boot
4 *
5 * 2017 Marek Behún, CZ.NIC, kabel@kernel.org
6 */
7
8#include <blk.h>
9#include <compiler.h>
10#include <fs_internal.h>
11
12struct blk_desc *btrfs_blk_desc;
13struct disk_partition *btrfs_part_info;
14
15int btrfs_devread(u64 address, int byte_len, void *buf)
16{
17 lbaint_t sector;
18 int byte_offset;
19
20 sector = address >> btrfs_blk_desc->log2blksz;
21 byte_offset = address % btrfs_blk_desc->blksz;
22
23 return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset,
24 byte_len, buf);
25}