1 /* 2 * BTRFS filesystem implementation for U-Boot 3 * 4 * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <compiler.h> 11 #include <fs_internal.h> 12 13 struct blk_desc *btrfs_blk_desc; 14 disk_partition_t *btrfs_part_info; 15 16 int 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