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// 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/blake2.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;
}
/* We use the full CSUM_SIZE(32) for BLAKE2B */
#define BTRFS_BLAKE2_HASH_SIZE 32
int hash_blake2(const u8 *buf, size_t length, u8 *out)
{
blake2b_state S;
blake2b_init(&S, BTRFS_BLAKE2_HASH_SIZE);
blake2b_update(&S, buf, length);
blake2b_final(&S, out, BTRFS_BLAKE2_HASH_SIZE);
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);
}
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