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 <common.h> 9#include <blk.h> 10#include <compiler.h> 11#include <fs_internal.h> 12 13struct blk_desc *btrfs_blk_desc; 14struct disk_partition *btrfs_part_info; 15 16int btrfs_devread(u64 address, int byte_len, void *buf) 17{ 18 lbaint_t sector; 19 int byte_offset; 20 21 sector = address >> btrfs_blk_desc->log2blksz; 22 byte_offset = address % btrfs_blk_desc->blksz; 23 24 return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset, 25 byte_len, buf); 26} 27