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hash: Use Kconfig to enable hashing in host tools and SPL

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At present when building host tools, we force CONFIG_SHAxxx to be enabled
regardless of the board Kconfig setting. This is done in the image.h
header file.

For SPL we currently just assume the algorithm is desired if U-Boot proper
enables it.

Clean this up by adding new Kconfig options to enable hashing on the host,
relying on CONFIG_IS_ENABLED() to deal with the different builds.

Add new SPL Kconfigs for hardware-accelerated hashing, to maintain the
current settings.

This allows us to drop the image.h code and the I_WANT_MD5 hack.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Simon Glass 2021-09-25 19:43:18 -06:00 committed by Tom Rini
parent 603d15a572
commit 2c21256b27
6 changed files with 72 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
common/hash.c
View file

@ -25,6 +25,7 @@
#else
#include "mkimage.h"
#include <time.h>
#include <linux/kconfig.h>
#endif /* !USE_HOSTCC*/
#include <hash.h>
@ -41,7 +42,7 @@ DECLARE_GLOBAL_DATA_PTR;
static void reloc_update(void);
#if defined(CONFIG_SHA1) && !defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA1) && !CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
static int hash_init_sha1(struct hash_algo *algo, void **ctxp)
{
sha1_context *ctx = malloc(sizeof(sha1_context));
@ -69,7 +70,7 @@ static int hash_finish_sha1(struct hash_algo *algo, void *ctx, void *dest_buf,
}
#endif
#if defined(CONFIG_SHA256) && !defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA256) && !CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
static int hash_init_sha256(struct hash_algo *algo, void **ctxp)
{
sha256_context *ctx = malloc(sizeof(sha256_context));
@ -97,7 +98,7 @@ static int hash_finish_sha256(struct hash_algo *algo, void *ctx, void
}
#endif
#if defined(CONFIG_SHA384) && !defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA384) && !CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
static int hash_init_sha384(struct hash_algo *algo, void **ctxp)
{
sha512_context *ctx = malloc(sizeof(sha512_context));
@ -125,7 +126,7 @@ static int hash_finish_sha384(struct hash_algo *algo, void *ctx, void
}
#endif
#if defined(CONFIG_SHA512) && !defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA512) && !CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
static int hash_init_sha512(struct hash_algo *algo, void **ctxp)
{
sha512_context *ctx = malloc(sizeof(sha512_context));
@ -207,18 +208,13 @@ static int hash_finish_crc32(struct hash_algo *algo, void *ctx, void *dest_buf,
return 0;
}
#ifdef USE_HOSTCC
# define I_WANT_MD5 1
#else
# define I_WANT_MD5 CONFIG_IS_ENABLED(MD5)
#endif
/*
* These are the hash algorithms we support. If we have hardware acceleration
* is enable we will use that, otherwise a software version of the algorithm.
* Note that algorithm names must be in lower case.
*/
static struct hash_algo hash_algo[] = {
#if I_WANT_MD5
#if CONFIG_IS_ENABLED(MD5)
{
.name = "md5",
.digest_size = MD5_SUM_LEN,
@ -226,17 +222,17 @@ static struct hash_algo hash_algo[] = {
.hash_func_ws = md5_wd,
},
#endif
#ifdef CONFIG_SHA1
#if CONFIG_IS_ENABLED(SHA1)
{
.name = "sha1",
.digest_size = SHA1_SUM_LEN,
.chunk_size = CHUNKSZ_SHA1,
#ifdef CONFIG_SHA_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA_HW_ACCEL)
.hash_func_ws = hw_sha1,
#else
.hash_func_ws = sha1_csum_wd,
#endif
#ifdef CONFIG_SHA_PROG_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
@ -247,17 +243,17 @@ static struct hash_algo hash_algo[] = {
#endif
},
#endif
#ifdef CONFIG_SHA256
#if CONFIG_IS_ENABLED(SHA256)
{
.name = "sha256",
.digest_size = SHA256_SUM_LEN,
.chunk_size = CHUNKSZ_SHA256,
#ifdef CONFIG_SHA_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA_HW_ACCEL)
.hash_func_ws = hw_sha256,
#else
.hash_func_ws = sha256_csum_wd,
#endif
#ifdef CONFIG_SHA_PROG_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
@ -268,17 +264,17 @@ static struct hash_algo hash_algo[] = {
#endif
},
#endif
#ifdef CONFIG_SHA384
#if CONFIG_IS_ENABLED(SHA384)
{
.name = "sha384",
.digest_size = SHA384_SUM_LEN,
.chunk_size = CHUNKSZ_SHA384,
#ifdef CONFIG_SHA512_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA512_HW_ACCEL)
.hash_func_ws = hw_sha384,
#else
.hash_func_ws = sha384_csum_wd,
#endif
#if defined(CONFIG_SHA512_HW_ACCEL) && defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA512_HW_ACCEL) && CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
@ -289,17 +285,17 @@ static struct hash_algo hash_algo[] = {
#endif
},
#endif
#ifdef CONFIG_SHA512
#if CONFIG_IS_ENABLED(SHA512)
{
.name = "sha512",
.digest_size = SHA512_SUM_LEN,
.chunk_size = CHUNKSZ_SHA512,
#ifdef CONFIG_SHA512_HW_ACCEL
#if CONFIG_IS_ENABLED(SHA512_HW_ACCEL)
.hash_func_ws = hw_sha512,
#else
.hash_func_ws = sha512_csum_wd,
#endif
#if defined(CONFIG_SHA512_HW_ACCEL) && defined(CONFIG_SHA_PROG_HW_ACCEL)
#if CONFIG_IS_ENABLED(SHA512_HW_ACCEL) && CONFIG_IS_ENABLED(SHA_PROG_HW_ACCEL)
.hash_init = hw_sha_init,
.hash_update = hw_sha_update,
.hash_finish = hw_sha_finish,
@ -331,9 +327,9 @@ static struct hash_algo hash_algo[] = {
};
/* Try to minimize code size for boards that don't want much hashing */
#if defined(CONFIG_SHA256) || defined(CONFIG_CMD_SHA1SUM) || \
defined(CONFIG_CRC32_VERIFY) || defined(CONFIG_CMD_HASH) || \
defined(CONFIG_SHA384) || defined(CONFIG_SHA512)
#if CONFIG_IS_ENABLED(SHA256) || CONFIG_IS_ENABLED(CMD_SHA1SUM) || \
CONFIG_IS_ENABLED(CRC32_VERIFY) || CONFIG_IS_ENABLED(CMD_HASH) || \
CONFIG_IS_ENABLED(SHA384) || CONFIG_IS_ENABLED(SHA512)
#define multi_hash() 1
#else
#define multi_hash() 0
@ -438,7 +434,8 @@ int hash_block(const char *algo_name, const void *data, unsigned int len,
return 0;
}
#if defined(CONFIG_CMD_HASH) || defined(CONFIG_CMD_SHA1SUM) || defined(CONFIG_CMD_CRC32)
#if !defined(CONFIG_SPL_BUILD) && (defined(CONFIG_CMD_HASH) || \
defined(CONFIG_CMD_SHA1SUM) || defined(CONFIG_CMD_CRC32))
/**
* store_result: Store the resulting sum to an address or variable
*

2
include/fdt_support.h
View file

@ -7,7 +7,7 @@
#ifndef __FDT_SUPPORT_H
#define __FDT_SUPPORT_H
#ifdef CONFIG_OF_LIBFDT
#if defined(CONFIG_OF_LIBFDT) && !defined(USE_HOSTCC)
#include <asm/u-boot.h>
#include <linux/libfdt.h>

6
include/hash.h
View file

@ -6,13 +6,17 @@
#ifndef _HASH_H
#define _HASH_H
#ifdef USE_HOSTCC
#include <linux/kconfig.h>
#endif
struct cmd_tbl;
/*
* Maximum digest size for all algorithms we support. Having this value
* avoids a malloc() or C99 local declaration in common/cmd_hash.c.
*/
#if defined(CONFIG_SHA384) || defined(CONFIG_SHA512)
#if CONFIG_IS_ENABLED(SHA384) || CONFIG_IS_ENABLED(SHA512)
#define HASH_MAX_DIGEST_SIZE 64
#else
#define HASH_MAX_DIGEST_SIZE 32

5
include/image.h
View file

@ -31,11 +31,6 @@ struct fdt_region;
#define IMAGE_ENABLE_OF_LIBFDT 1
#define CONFIG_FIT_VERBOSE 1 /* enable fit_format_{error,warning}() */
#define CONFIG_FIT_RSASSA_PSS 1
#define CONFIG_MD5
#define CONFIG_SHA1
#define CONFIG_SHA256
#define CONFIG_SHA384
#define CONFIG_SHA512
#define IMAGE_ENABLE_IGNORE 0
#define IMAGE_INDENT_STRING ""

18
lib/Kconfig
View file

@ -438,6 +438,24 @@ config SPL_SHA384
The SHA384 algorithm produces a 384-bit (48-byte) hash value
(digest).
config SPL_SHA_HW_ACCEL
bool "Enable hardware acceleration for SHA hash functions"
default y if SHA_HW_ACCEL
help
This option enables hardware acceleration for the SHA1 and SHA256
hashing algorithms. This affects the 'hash' command and also the
hash_lookup_algo() function.
config SPL_SHA_PROG_HW_ACCEL
bool "Enable Progressive hashing support using hardware in SPL"
depends on SHA_PROG_HW_ACCEL
default y
help
This option enables hardware-acceleration for SHA progressive
hashing.
Data can be streamed in a block at a time and the hashing is
performed in hardware.
endif
if SHA_HW_ACCEL

25
tools/Kconfig
View file

@ -45,4 +45,29 @@ config TOOLS_FIT_SIGNATURE_MAX_SIZE
depends on TOOLS_FIT_SIGNATURE
default 0x10000000
config TOOLS_MD5
def_bool y
help
Enable MD5 support in the tools builds
config TOOLS_SHA1
def_bool y
help
Enable SHA1 support in the tools builds
config TOOLS_SHA256
def_bool y
help
Enable SHA256 support in the tools builds
config TOOLS_SHA384
def_bool y
help
Enable SHA384 support in the tools builds
config TOOLS_SHA512
def_bool y
help
Enable SHA512 support in the tools builds
endmenu