| // SPDX-License-Identifier: GPL-2.0+ |
| |
| #include <linux/xxhash.h> |
| #include <linux/unaligned/access_ok.h> |
| #include <linux/types.h> |
| #include <u-boot/sha256.h> |
| #include <u-boot/crc.h> |
| |
| static u32 btrfs_crc32c_table[256]; |
| |
| void btrfs_hash_init(void) |
| { |
| static int inited = 0; |
| |
| if (!inited) { |
| crc32c_init(btrfs_crc32c_table, 0x82F63B78); |
| inited = 1; |
| } |
| } |
| |
| int hash_sha256(const u8 *buf, size_t length, u8 *out) |
| { |
| sha256_context ctx; |
| |
| sha256_starts(&ctx); |
| sha256_update(&ctx, buf, length); |
| sha256_finish(&ctx, out); |
| |
| return 0; |
| } |
| |
| int hash_xxhash(const u8 *buf, size_t length, u8 *out) |
| { |
| u64 hash; |
| |
| hash = xxh64(buf, length, 0); |
| put_unaligned_le64(hash, out); |
| |
| return 0; |
| } |
| |
| int hash_crc32c(const u8 *buf, size_t length, u8 *out) |
| { |
| u32 crc; |
| |
| crc = crc32c_cal((u32)~0, (char *)buf, length, btrfs_crc32c_table); |
| put_unaligned_le32(~crc, out); |
| |
| return 0; |
| } |
| |
| u32 crc32c(u32 seed, const void * data, size_t len) |
| { |
| return crc32c_cal(seed, data, len, btrfs_crc32c_table); |
| } |