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lib: sha256: move common function to sha256_common.c

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The function sha256_csum_wd is defined in lib/sha256.c
and in lib/mbedtls/sha256.c. To avoid duplicating this
function (and future function), we move this function
to the file lib/sha256_common.c

Reviewed-by: Raymond Mao <raymond.mao@linaro.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This commit is contained in:
Philippe Reynes 2024-12-19 14:05:49 +01:00 • committed by Tom Rini
parent 70a42bf217
commit ccc5e16683
5 changed files with 52 additions and 63 deletions
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1
lib/Makefile
View file

@ -77,6 +77,7 @@ obj-$(CONFIG_BLAKE2) += blake2/blake2b.o
obj-$(CONFIG_$(XPL_)MD5_LEGACY) += md5.o
obj-$(CONFIG_$(XPL_)SHA1_LEGACY) += sha1.o
obj-$(CONFIG_$(XPL_)SHA256) += sha256_common.o
obj-$(CONFIG_$(XPL_)SHA256_LEGACY) += sha256.o
obj-$(CONFIG_$(XPL_)SHA512_LEGACY) += sha512.o

27
lib/mbedtls/sha256.c
View file

@ -33,30 +33,3 @@ void sha256_finish(sha256_context *ctx, uint8_t digest[SHA256_SUM_LEN])
mbedtls_sha256_finish(ctx, digest);
mbedtls_sha256_free(ctx);
}
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz)
{
sha256_context ctx;
sha256_starts(&ctx);
if (IS_ENABLED(CONFIG_HW_WATCHDOG) || IS_ENABLED(CONFIG_WATCHDOG)) {
const unsigned char *curr = input;
const unsigned char *end = input + ilen;
int chunk;
while (curr < end) {
chunk = end - curr;
if (chunk > chunk_sz)
chunk = chunk_sz;
sha256_update(&ctx, curr, chunk);
curr += chunk;
schedule();
}
} else {
sha256_update(&ctx, input, ilen);
}
sha256_finish(&ctx, output);
}

36
lib/sha256.c
View file

@ -264,39 +264,3 @@ void sha256_finish(sha256_context * ctx, uint8_t digest[32])
PUT_UINT32_BE(ctx->state[6], digest, 24);
PUT_UINT32_BE(ctx->state[7], digest, 28);
}
/*
* Output = SHA-256( input buffer ). Trigger the watchdog every 'chunk_sz'
* bytes of input processed.
*/
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz)
{
sha256_context ctx;
#if !defined(USE_HOSTCC) && \
(defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG))
const unsigned char *end;
unsigned char *curr;
int chunk;
#endif
sha256_starts(&ctx);
#if !defined(USE_HOSTCC) && \
(defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG))
curr = (unsigned char *)input;
end = input + ilen;
while (curr < end) {
chunk = end - curr;
if (chunk > chunk_sz)
chunk = chunk_sz;
sha256_update(&ctx, curr, chunk);
curr += chunk;
schedule();
}
#else
sha256_update(&ctx, input, ilen);
#endif
sha256_finish(&ctx, output);
}

50
lib/sha256_common.c Normal file
View file

@ -0,0 +1,50 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* FIPS-180-2 compliant SHA-256 implementation
*
* Copyright (C) 2001-2003 Christophe Devine
*/
#ifndef USE_HOSTCC
#include <u-boot/schedule.h>
#endif /* USE_HOSTCC */
#include <string.h>
#include <u-boot/sha256.h>
#include <linux/compiler_attributes.h>
/*
* Output = SHA-256( input buffer ). Trigger the watchdog every 'chunk_sz'
* bytes of input processed.
*/
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz)
{
sha256_context ctx;
#if !defined(USE_HOSTCC) && \
(defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG))
const unsigned char *end;
unsigned char *curr;
int chunk;
#endif
sha256_starts(&ctx);
#if !defined(USE_HOSTCC) && \
(defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG))
curr = (unsigned char *)input;
end = input + ilen;
while (curr < end) {
chunk = end - curr;
if (chunk > chunk_sz)
chunk = chunk_sz;
sha256_update(&ctx, curr, chunk);
curr += chunk;
schedule();
}
#else
sha256_update(&ctx, input, ilen);
#endif
sha256_finish(&ctx, output);
}

1
tools/Makefile
View file

@ -135,6 +135,7 @@ dumpimage-mkimage-objs := aisimage.o \
generated/lib/hash-checksum.o \
generated/lib/sha1.o \
generated/lib/sha256.o \
generated/lib/sha256_common.o \
generated/lib/sha512.o \
generated/common/hash.o \
ublimage.o \