feat(st-crypto): update HASH for new hardware version used in STM32MP13

Introduce new flag to manage hardware version.
STM32MP15 currently uses the HASH_V2 and STM32MP13 uses the HASH_V4.
For STM32_HASH_V4: remove MD5 algorithm (no more supported) and
add SHA384 and SHA512.

For STM32_HASH_V2: no change.

Change-Id: I3a9ae9e38249a2421c657232cb0877004d04dae1
Signed-off-by: Nicolas Toromanoff <nicolas.toromanoff@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com>

drivers/st/crypto/stm32_hash.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,10 +8,6 @@
 #include <errno.h>
 #include <stdint.h>
 
-#include <libfdt.h>
-
-#include <platform_def.h>
-
 #include <arch_helpers.h>
 #include <common/debug.h>
 #include <drivers/clk.h>
@@ -20,9 +16,17 @@
 #include <drivers/st/stm32mp_reset.h>
 #include <lib/mmio.h>
 #include <lib/utils.h>
+#include <libfdt.h>
 #include <plat/common/platform.h>
 
+#include <platform_def.h>
+
+#if STM32_HASH_VER == 2
 #define DT_HASH_COMPAT			"st,stm32f756-hash"
+#endif
+#if STM32_HASH_VER == 4
+#define DT_HASH_COMPAT			"st,stm32mp13-hash"
+#endif
 
 #define HASH_CR				0x00U
 #define HASH_DIN			0x04U
@@ -33,11 +37,22 @@
 /* Control Register */
 #define HASH_CR_INIT			BIT(2)
 #define HASH_CR_DATATYPE_SHIFT		U(4)
-
+#if STM32_HASH_VER == 2
 #define HASH_CR_ALGO_SHA1		0x0U
 #define HASH_CR_ALGO_MD5		BIT(7)
 #define HASH_CR_ALGO_SHA224		BIT(18)
 #define HASH_CR_ALGO_SHA256		(BIT(18) | BIT(7))
+#endif
+#if STM32_HASH_VER == 4
+#define HASH_CR_ALGO_SHIFT		U(17)
+#define HASH_CR_ALGO_SHA1		(0x0U << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA224		(0x2U << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA256		(0x3U << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA384		(0xCU << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA512_224		(0xDU << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA512_256		(0xEU << HASH_CR_ALGO_SHIFT)
+#define HASH_CR_ALGO_SHA512		(0xFU << HASH_CR_ALGO_SHIFT)
+#endif
 
 /* Status Flags */
 #define HASH_SR_DCIS			BIT(1)
@@ -51,6 +66,10 @@
 #define SHA1_DIGEST_SIZE		20U
 #define SHA224_DIGEST_SIZE		28U
 #define SHA256_DIGEST_SIZE		32U
+#define SHA384_DIGEST_SIZE		48U
+#define SHA512_224_DIGEST_SIZE		28U
+#define SHA512_256_DIGEST_SIZE		32U
+#define SHA512_DIGEST_SIZE		64U
 
 #define RESET_TIMEOUT_US_1MS		1000U
 #define HASH_TIMEOUT_US			10000U
@@ -131,10 +150,12 @@ static void hash_hw_init(enum stm32_hash_algo_mode mode)
 	reg = HASH_CR_INIT | (HASH_DATA_8_BITS << HASH_CR_DATATYPE_SHIFT);
 
 	switch (mode) {
+#if STM32_HASH_VER == 2
 	case HASH_MD5SUM:
 		reg |= HASH_CR_ALGO_MD5;
 		stm32_hash.digest_size = MD5_DIGEST_SIZE;
 		break;
+#endif
 	case HASH_SHA1:
 		reg |= HASH_CR_ALGO_SHA1;
 		stm32_hash.digest_size = SHA1_DIGEST_SIZE;
@@ -143,6 +164,16 @@ static void hash_hw_init(enum stm32_hash_algo_mode mode)
 		reg |= HASH_CR_ALGO_SHA224;
 		stm32_hash.digest_size = SHA224_DIGEST_SIZE;
 		break;
+#if STM32_HASH_VER == 4
+	case HASH_SHA384:
+		reg |= HASH_CR_ALGO_SHA384;
+		stm32_hash.digest_size = SHA384_DIGEST_SIZE;
+		break;
+	case HASH_SHA512:
+		reg |= HASH_CR_ALGO_SHA512;
+		stm32_hash.digest_size = SHA512_DIGEST_SIZE;
+		break;
+#endif
 	/* Default selected algo is SHA256 */
 	case HASH_SHA256:
 	default:

include/drivers/st/stm32_hash.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,11 +7,19 @@
 #ifndef STM32_HASH_H
 #define STM32_HASH_H
 
+#include <stdint.h>
+
 enum stm32_hash_algo_mode {
+#if STM32_HASH_VER == 2
 	HASH_MD5SUM,
+#endif
 	HASH_SHA1,
 	HASH_SHA224,
-	HASH_SHA256
+	HASH_SHA256,
+#if STM32_HASH_VER == 4
+	HASH_SHA384,
+	HASH_SHA512,
+#endif
 };
 
 int stm32_hash_update(const uint8_t *buffer, size_t length);

plat/st/stm32mp1/platform.mk

@@ -110,6 +110,12 @@ $(error FWU Feature enabled only with FIP images)
 endif
 endif
 
+ifeq ($(STM32MP13),1)
+STM32_HASH_VER		:=	4
+else # Assuming STM32MP15
+STM32_HASH_VER		:=	2
+endif
+
 # Boot devices
 STM32MP_EMMC		?=	0
 STM32MP_SDMMC		?=	0
@@ -223,6 +229,7 @@ $(eval $(call assert_booleans,\
 $(eval $(call assert_numerics,\
 	$(sort \
 		PLAT_PARTITION_MAX_ENTRIES \
+		STM32_HASH_VER \
 		STM32_TF_A_COPIES \
 		STM32_TF_VERSION \
 		STM32MP_UART_BAUDRATE \
@@ -233,6 +240,7 @@ $(eval $(call add_defines,\
 		DWL_BUFFER_BASE \
 		PLAT_PARTITION_MAX_ENTRIES \
 		PLAT_XLAT_TABLES_DYNAMIC \
+		STM32_HASH_VER \
 		STM32_TF_A_COPIES \
 		STM32_TF_VERSION \
 		STM32MP_DDR_32BIT_INTERFACE \