fs: btrfs: Add more checksum algorithms
This mostly crossports crypto/hash.[ch] from btrfs-progs.
The differences are:
- No blake2 support
No blake2 related library in U-Boot yet.
- Use uboot xxhash/sha256 directly
No need to implement the code as U-Boot has already provided the
interface.
This adds the support for the following csums:
- SHA256
- XXHASH
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
new file mode 100644
index 0000000..58c32b5
--- /dev/null
+++ b/fs/btrfs/disk-io.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <common.h>
+#include <fs_internal.h>
+#include "disk-io.h"
+#include "crypto/hash.h"
+
+int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len)
+{
+ memset(out, 0, BTRFS_CSUM_SIZE);
+
+ switch (csum_type) {
+ case BTRFS_CSUM_TYPE_CRC32:
+ return hash_crc32c(data, len, out);
+ case BTRFS_CSUM_TYPE_XXHASH:
+ return hash_xxhash(data, len, out);
+ case BTRFS_CSUM_TYPE_SHA256:
+ return hash_sha256(data, len, out);
+ default:
+ printf("Unknown csum type %d\n", csum_type);
+ return -EINVAL;
+ }
+}