dev.c 589 B

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