1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * BTRFS filesystem implementation for U-Boot 4 * 5 * 2017 Marek Behun, CZ.NIC, marek.behun (at) nic.cz 6 */ 7 8 #include <common.h> 9 #include <compiler.h> 10 #include <fs_internal.h> 11 12 struct blk_desc *btrfs_blk_desc; 13 disk_partition_t *btrfs_part_info; 14 15 int 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 } 26
