[U-Boot] [PATCH 0/4] Add ACE HW support for SHA 256

[U-Boot] [PATCH 0/4] Add ACE HW support for SHA 256

[Akshay Saraswat]

This patch set adds hardware acceleration for SHA 256
with the help of ACE.

Akshay Saraswat (4):
  Exynos: Add hardware accelerated SHA 256
  Exynos: config: Enable ACE HW for SHA 256 for Exynos
  gen: Add sha256 command
  Exynos: Flush memory region before starting SHA DMA operation

 arch/arm/cpu/armv7/exynos/Makefile         |   4 +
 arch/arm/cpu/armv7/exynos/ace_sha.c        | 123 ++++++++++++
 arch/arm/include/asm/arch-exynos/ace_sfr.h | 310 +++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-exynos/ace_sha.h |  41 ++++
 arch/arm/include/asm/arch-exynos/cpu.h     |   4 +
 common/Makefile                            |   1 +
 common/cmd_sha256.c                        |  69 +++++++
 include/configs/exynos5250-dt.h            |   3 +
 8 files changed, 555 insertions(+)
 create mode 100644 arch/arm/cpu/armv7/exynos/ace_sha.c
 create mode 100644 arch/arm/include/asm/arch-exynos/ace_sfr.h
 create mode 100644 arch/arm/include/asm/arch-exynos/ace_sha.h
 create mode 100644 common/cmd_sha256.c

-- 
1.8.0

[U-Boot] [PATCH 1/4] Exynos: Add hardware accelerated SHA 256

[Akshay Saraswat]

SHA-256 and SHA-1 accelerated using ACE hardware.

TEST=sha256 0x40008000 0x2B 0x40009000
Used mm and md to write a standard string to memory location
0x40008000 and ran the above command to verify the output.

Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
---
 arch/arm/cpu/armv7/exynos/Makefile         |   4 +
 arch/arm/cpu/armv7/exynos/ace_sha.c        | 118 +++++++++++
 arch/arm/include/asm/arch-exynos/ace_sfr.h | 310 +++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-exynos/ace_sha.h |  41 ++++
 arch/arm/include/asm/arch-exynos/cpu.h     |   4 +
 5 files changed, 477 insertions(+)
 create mode 100644 arch/arm/cpu/armv7/exynos/ace_sha.c
 create mode 100644 arch/arm/include/asm/arch-exynos/ace_sfr.h
 create mode 100644 arch/arm/include/asm/arch-exynos/ace_sha.h

diff --git a/arch/arm/cpu/armv7/exynos/Makefile b/arch/arm/cpu/armv7/exynos/Makefile
index 9119961..0a93a52 100644
--- a/arch/arm/cpu/armv7/exynos/Makefile
+++ b/arch/arm/cpu/armv7/exynos/Makefile
@@ -24,6 +24,10 @@ LIB	= $(obj)lib$(SOC).o
 
 COBJS	+= clock.o power.o soc.o system.o pinmux.o
 
+ifdef CONFIG_EXYNOS_ACE_SHA
+COBJS += ace_sha.o
+endif
+
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
 
diff --git a/arch/arm/cpu/armv7/exynos/ace_sha.c b/arch/arm/cpu/armv7/exynos/ace_sha.c
new file mode 100644
index 0000000..2715a03
--- /dev/null
+++ b/arch/arm/cpu/armv7/exynos/ace_sha.c
@@ -0,0 +1,118 @@
+/*
+ * Advanced Crypto Engine - SHA Firmware
+ *
+ * Copyright (c) 2012  Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include <common.h>
+#include <asm/arch/ace_sha.h>
+#include <asm/arch/ace_sfr.h>
+
+/* Maximum input data size is 8 MB. Timeout observed for data size above 8MB */
+#define TIMEOUT_MS		100
+
+#define SHA1_DIGEST_LEN		20
+#define SHA256_DIGEST_LEN	32
+
+/* SHA1 value for the message of zero length */
+static const unsigned char sha1_digest_emptymsg[SHA1_DIGEST_LEN] = {
+	0xDA, 0x39, 0xA3, 0xEE, 0x5E, 0x6B, 0x4B, 0x0D,
+	0x32, 0x55, 0xBF, 0xFF, 0x95, 0x60, 0x18, 0x90,
+	0xAF, 0xD8, 0x07, 0x09};
+
+/* SHA256 value for the message of zero length */
+static const unsigned char sha256_digest_emptymsg[SHA256_DIGEST_LEN] = {
+	0xE3, 0xB0, 0xC4, 0x42, 0x98, 0xFC, 0x1C, 0x14,
+	0x9A, 0xFB, 0xF4, 0xC8, 0x99, 0x6F, 0xB9, 0x24,
+	0x27, 0xAE, 0x41, 0xE4, 0x64, 0x9B, 0x93, 0x4C,
+	0xA4, 0x95, 0x99, 0x1B, 0x78, 0x52, 0xB8, 0x55};
+
+int ace_sha_hash_digest(
+	unsigned char *pout, unsigned char *pbuf,
+	unsigned int buf_len, unsigned int hash_type)
+{
+	unsigned int i, reg, len;
+	unsigned int *pdigest;
+	ulong start;
+	struct exynos_ace_sfr *ace_sha_reg =
+		(struct exynos_ace_sfr *) samsung_get_base_ace_sfr();
+
+	if (buf_len == 0) {
+		/* ACE H/W cannot compute hash value for empty string */
+		if (hash_type == ACE_SHA_TYPE_SHA1)
+			memcpy(pout, sha1_digest_emptymsg, SHA1_DIGEST_LEN);
+		else
+			memcpy(pout, sha256_digest_emptymsg, SHA256_DIGEST_LEN);
+		return 0;
+	}
+
+	/* Flush HRDMA */
+	writel(ACE_FC_HRDMACFLUSH_ON, &ace_sha_reg->fc_hrdmac);
+	writel(ACE_FC_HRDMACFLUSH_OFF, &ace_sha_reg->fc_hrdmac);
+
+	/* Set byte swap of data in */
+	writel(ACE_HASH_SWAPDI_ON | ACE_HASH_SWAPDO_ON | ACE_HASH_SWAPIV_ON,
+			&ace_sha_reg->hash_byteswap);
+
+	/* Select Hash input mux as external source */
+	reg = readl(&ace_sha_reg->fc_fifoctrl);
+	reg = (reg & ~ACE_FC_SELHASH_MASK) | ACE_FC_SELHASH_EXOUT;
+	writel(reg, &ace_sha_reg->fc_fifoctrl);
+
+	/* Set Hash as SHA1 or SHA256 and start Hash engine */
+	reg = (hash_type == ACE_SHA_TYPE_SHA1) ?
+		ACE_HASH_ENGSEL_SHA1HASH : ACE_HASH_ENGSEL_SHA256HASH;
+	reg |= ACE_HASH_STARTBIT_ON;
+	writel(reg, &ace_sha_reg->hash_control);
+
+	/* Enable FIFO mode */
+	writel(ACE_HASH_FIFO_ON, &ace_sha_reg->hash_fifo_mode);
+
+	/* Set message length */
+	writel(buf_len, &ace_sha_reg->hash_msgsize_low);
+	writel(0, &ace_sha_reg->hash_msgsize_high);
+
+	/* Set HRDMA */
+	writel((unsigned int)pbuf, &ace_sha_reg->fc_hrdmas);
+	writel(buf_len, &ace_sha_reg->fc_hrdmal);
+
+	start = get_timer(0);
+
+	while ((readl(&ace_sha_reg->hash_status) & ACE_HASH_MSGDONE_MASK) ==
+		ACE_HASH_MSGDONE_OFF) {
+
+		if (get_timer(start) > TIMEOUT_MS) {
+			debug("%s: Timeout waiting for ACE\n", __func__);
+			return -1;
+		}
+	}
+
+	/* Clear MSG_DONE bit */
+	writel(ACE_HASH_MSGDONE_ON, &ace_sha_reg->hash_status);
+
+	/* Read hash result */
+	pdigest = (unsigned int *)pout;
+	len = (hash_type == ACE_SHA_TYPE_SHA1) ? 5 : 8;
+
+	for (i = 0; i < len ; i++)
+		pdigest[i] = readl(&ace_sha_reg->hash_result[i]);
+
+	/* Clear HRDMA pending bit */
+	writel(ACE_FC_HRDMA, &ace_sha_reg->fc_intpend);
+
+	return 0;
+}
diff --git a/arch/arm/include/asm/arch-exynos/ace_sfr.h b/arch/arm/include/asm/arch-exynos/ace_sfr.h
new file mode 100644
index 0000000..8f1c893
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/ace_sfr.h
@@ -0,0 +1,310 @@
+/*
+ * Header file for Advanced Crypto Engine - SFR definitions
+ *
+ * Copyright (c) 2012  Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef __ACE_SFR_H
+#define __ACE_SFR_H
+
+struct exynos_ace_sfr {
+	unsigned int	fc_intstat;	/* base + 0 */
+	unsigned int	fc_intenset;
+	unsigned int	fc_intenclr;
+	unsigned int	fc_intpend;
+	unsigned int	fc_fifostat;
+	unsigned int	fc_fifoctrl;
+	unsigned int	fc_global;
+	unsigned int	res1;
+	unsigned int	fc_brdmas;
+	unsigned int	fc_brdmal;
+	unsigned int	fc_brdmac;
+	unsigned int	res2;
+	unsigned int	fc_btdmas;
+	unsigned int	fc_btdmal;
+	unsigned int	fc_btdmac;
+	unsigned int	res3;
+	unsigned int	fc_hrdmas;
+	unsigned int	fc_hrdmal;
+	unsigned int	fc_hrdmac;
+	unsigned int	res4;
+	unsigned int	fc_pkdmas;
+	unsigned int	fc_pkdmal;
+	unsigned int	fc_pkdmac;
+	unsigned int	fc_pkdmao;
+	unsigned char   res5[0x1a0];
+
+	unsigned int	aes_control;	/* base + 0x200 */
+	unsigned int	aes_status;
+	unsigned char	res6[0x8];
+	unsigned int	aes_in[4];
+	unsigned int	aes_out[4];
+	unsigned int	aes_iv[4];
+	unsigned int	aes_cnt[4];
+	unsigned char   res7[0x30];
+	unsigned int	aes_key[8];
+	unsigned char   res8[0x60];
+
+	unsigned int	tdes_control;	/* base + 0x300 */
+	unsigned int	tdes_status;
+	unsigned char   res9[0x8];
+	unsigned int	tdes_key[6];
+	unsigned int	tdes_iv[2];
+	unsigned int	tdes_in[2];
+	unsigned int	tdes_out[2];
+	unsigned char   res10[0xc0];
+
+	unsigned int	hash_control;	/* base + 0x400 */
+	unsigned int	hash_control2;
+	unsigned int	hash_fifo_mode;
+	unsigned int	hash_byteswap;
+	unsigned int	hash_status;
+	unsigned char   res11[0xc];
+	unsigned int	hash_msgsize_low;
+	unsigned int	hash_msgsize_high;
+	unsigned int	hash_prelen_low;
+	unsigned int	hash_prelen_high;
+	unsigned int	hash_in[16];
+	unsigned int	hash_key_in[16];
+	unsigned int	hash_iv[8];
+	unsigned char   res12[0x30];
+	unsigned int	hash_result[8];
+	unsigned char   res13[0x20];
+	unsigned int	hash_seed[8];
+	unsigned int	hash_prng[8];
+	unsigned char   res14[0x180];
+
+	unsigned int	pka_sfr[5];		/* base + 0x700 */
+};
+
+/* ACE_FC_INT */
+#define ACE_FC_PKDMA			(1 << 0)
+#define ACE_FC_HRDMA			(1 << 1)
+#define ACE_FC_BTDMA			(1 << 2)
+#define ACE_FC_BRDMA			(1 << 3)
+#define ACE_FC_PRNG_ERROR		(1 << 4)
+#define ACE_FC_MSG_DONE			(1 << 5)
+#define ACE_FC_PRNG_DONE		(1 << 6)
+#define ACE_FC_PARTIAL_DONE		(1 << 7)
+
+/* ACE_FC_FIFOSTAT */
+#define ACE_FC_PKFIFO_EMPTY		(1 << 0)
+#define ACE_FC_PKFIFO_FULL		(1 << 1)
+#define ACE_FC_HRFIFO_EMPTY		(1 << 2)
+#define ACE_FC_HRFIFO_FULL		(1 << 3)
+#define ACE_FC_BTFIFO_EMPTY		(1 << 4)
+#define ACE_FC_BTFIFO_FULL		(1 << 5)
+#define ACE_FC_BRFIFO_EMPTY		(1 << 6)
+#define ACE_FC_BRFIFO_FULL		(1 << 7)
+
+/* ACE_FC_FIFOCTRL */
+#define ACE_FC_SELHASH_MASK		(3 << 0)
+#define ACE_FC_SELHASH_EXOUT		(0 << 0)	/* independent source */
+#define ACE_FC_SELHASH_BCIN		(1 << 0)	/* blk cipher input */
+#define ACE_FC_SELHASH_BCOUT		(2 << 0)	/* blk cipher output */
+#define ACE_FC_SELBC_MASK		(1 << 2)
+#define ACE_FC_SELBC_AES		(0 << 2)	/* AES */
+#define ACE_FC_SELBC_DES		(1 << 2)	/* DES */
+
+/* ACE_FC_GLOBAL */
+#define ACE_FC_SSS_RESET		(1 << 0)
+#define ACE_FC_DMA_RESET		(1 << 1)
+#define ACE_FC_AES_RESET		(1 << 2)
+#define ACE_FC_DES_RESET		(1 << 3)
+#define ACE_FC_HASH_RESET		(1 << 4)
+#define ACE_FC_AXI_ENDIAN_MASK		(3 << 6)
+#define ACE_FC_AXI_ENDIAN_LE		(0 << 6)
+#define ACE_FC_AXI_ENDIAN_BIBE		(1 << 6)
+#define ACE_FC_AXI_ENDIAN_WIBE		(2 << 6)
+
+/* Feed control - BRDMA control */
+#define ACE_FC_BRDMACFLUSH_OFF		(0 << 0)
+#define ACE_FC_BRDMACFLUSH_ON		(1 << 0)
+#define ACE_FC_BRDMACSWAP_ON		(1 << 1)
+#define ACE_FC_BRDMACARPROT_MASK	(0x7 << 2)
+#define ACE_FC_BRDMACARPROT_OFS		(2)
+#define ACE_FC_BRDMACARCACHE_MASK	(0xf << 5)
+#define ACE_FC_BRDMACARCACHE_OFS	(5)
+
+/* Feed control - BTDMA control */
+#define ACE_FC_BTDMACFLUSH_OFF		(0 << 0)
+#define ACE_FC_BTDMACFLUSH_ON		(1 << 0)
+#define ACE_FC_BTDMACSWAP_ON		(1 << 1)
+#define ACE_FC_BTDMACAWPROT_MASK	(0x7 << 2)
+#define ACE_FC_BTDMACAWPROT_OFS		(2)
+#define ACE_FC_BTDMACAWCACHE_MASK	(0xf << 5)
+#define ACE_FC_BTDMACAWCACHE_OFS	(5)
+
+/* Feed control - HRDMA control */
+#define ACE_FC_HRDMACFLUSH_OFF		(0 << 0)
+#define ACE_FC_HRDMACFLUSH_ON		(1 << 0)
+#define ACE_FC_HRDMACSWAP_ON		(1 << 1)
+#define ACE_FC_HRDMACARPROT_MASK	(0x7 << 2)
+#define ACE_FC_HRDMACARPROT_OFS		(2)
+#define ACE_FC_HRDMACARCACHE_MASK	(0xf << 5)
+#define ACE_FC_HRDMACARCACHE_OFS	(5)
+
+/* Feed control - PKDMA control */
+#define ACE_FC_PKDMACBYTESWAP_ON	(1 << 3)
+#define ACE_FC_PKDMACDESEND_ON		(1 << 2)
+#define ACE_FC_PKDMACTRANSMIT_ON	(1 << 1)
+#define ACE_FC_PKDMACFLUSH_ON		(1 << 0)
+
+/* Feed control - PKDMA offset */
+#define ACE_FC_SRAMOFFSET_MASK		(0xfff)
+
+/* AES control */
+#define ACE_AES_MODE_MASK		(1 << 0)
+#define ACE_AES_MODE_ENC		(0 << 0)
+#define ACE_AES_MODE_DEC		(1 << 0)
+#define ACE_AES_OPERMODE_MASK		(3 << 1)
+#define ACE_AES_OPERMODE_ECB		(0 << 1)
+#define ACE_AES_OPERMODE_CBC		(1 << 1)
+#define ACE_AES_OPERMODE_CTR		(2 << 1)
+#define ACE_AES_FIFO_MASK		(1 << 3)
+#define ACE_AES_FIFO_OFF		(0 << 3)	/* CPU mode */
+#define ACE_AES_FIFO_ON			(1 << 3)	/* FIFO mode */
+#define ACE_AES_KEYSIZE_MASK		(3 << 4)
+#define ACE_AES_KEYSIZE_128		(0 << 4)
+#define ACE_AES_KEYSIZE_192		(1 << 4)
+#define ACE_AES_KEYSIZE_256		(2 << 4)
+#define ACE_AES_KEYCNGMODE_MASK		(1 << 6)
+#define ACE_AES_KEYCNGMODE_OFF		(0 << 6)
+#define ACE_AES_KEYCNGMODE_ON		(1 << 6)
+#define ACE_AES_SWAP_MASK		(0x1f << 7)
+#define ACE_AES_SWAPKEY_OFF		(0 << 7)
+#define ACE_AES_SWAPKEY_ON		(1 << 7)
+#define ACE_AES_SWAPCNT_OFF		(0 << 8)
+#define ACE_AES_SWAPCNT_ON		(1 << 8)
+#define ACE_AES_SWAPIV_OFF		(0 << 9)
+#define ACE_AES_SWAPIV_ON		(1 << 9)
+#define ACE_AES_SWAPDO_OFF		(0 << 10)
+#define ACE_AES_SWAPDO_ON		(1 << 10)
+#define ACE_AES_SWAPDI_OFF		(0 << 11)
+#define ACE_AES_SWAPDI_ON		(1 << 11)
+#define ACE_AES_COUNTERSIZE_MASK	(3 << 12)
+#define ACE_AES_COUNTERSIZE_128		(0 << 12)
+#define ACE_AES_COUNTERSIZE_64		(1 << 12)
+#define ACE_AES_COUNTERSIZE_32		(2 << 12)
+#define ACE_AES_COUNTERSIZE_16		(3 << 12)
+
+/* AES status */
+#define ACE_AES_OUTRDY_MASK		(1 << 0)
+#define ACE_AES_OUTRDY_OFF		(0 << 0)
+#define ACE_AES_OUTRDY_ON		(1 << 0)
+#define ACE_AES_INRDY_MASK		(1 << 1)
+#define ACE_AES_INRDY_OFF		(0 << 1)
+#define ACE_AES_INRDY_ON		(1 << 1)
+#define ACE_AES_BUSY_MASK		(1 << 2)
+#define ACE_AES_BUSY_OFF		(0 << 2)
+#define ACE_AES_BUSY_ON			(1 << 2)
+
+/* TDES control */
+#define ACE_TDES_MODE_MASK		(1 << 0)
+#define ACE_TDES_MODE_ENC		(0 << 0)
+#define ACE_TDES_MODE_DEC		(1 << 0)
+#define ACE_TDES_OPERMODE_MASK		(1 << 1)
+#define ACE_TDES_OPERMODE_ECB		(0 << 1)
+#define ACE_TDES_OPERMODE_CBC		(1 << 1)
+#define ACE_TDES_SEL_MASK		(3 << 3)
+#define ACE_TDES_SEL_DES		(0 << 3)
+#define ACE_TDES_SEL_TDESEDE		(1 << 3)	/* TDES EDE mode */
+#define ACE_TDES_SEL_TDESEEE		(3 << 3)	/* TDES EEE mode */
+#define ACE_TDES_FIFO_MASK		(1 << 5)
+#define ACE_TDES_FIFO_OFF		(0 << 5)	/* CPU mode */
+#define ACE_TDES_FIFO_ON		(1 << 5)	/* FIFO mode */
+#define ACE_TDES_SWAP_MASK		(0xf << 6)
+#define ACE_TDES_SWAPKEY_OFF		(0 << 6)
+#define ACE_TDES_SWAPKEY_ON		(1 << 6)
+#define ACE_TDES_SWAPIV_OFF		(0 << 7)
+#define ACE_TDES_SWAPIV_ON		(1 << 7)
+#define ACE_TDES_SWAPDO_OFF		(0 << 8)
+#define ACE_TDES_SWAPDO_ON		(1 << 8)
+#define ACE_TDES_SWAPDI_OFF		(0 << 9)
+#define ACE_TDES_SWAPDI_ON		(1 << 9)
+
+/* TDES status */
+#define ACE_TDES_OUTRDY_MASK		(1 << 0)
+#define ACE_TDES_OUTRDY_OFF		(0 << 0)
+#define ACE_TDES_OUTRDY_ON		(1 << 0)
+#define ACE_TDES_INRDY_MASK		(1 << 1)
+#define ACE_TDES_INRDY_OFF		(0 << 1)
+#define ACE_TDES_INRDY_ON		(1 << 1)
+#define ACE_TDES_BUSY_MASK		(1 << 2)
+#define ACE_TDES_BUSY_OFF		(0 << 2)
+#define ACE_TDES_BUSY_ON		(1 << 2)
+
+/* Hash control */
+#define ACE_HASH_ENGSEL_MASK		(0xf << 0)
+#define ACE_HASH_ENGSEL_SHA1HASH	(0x0 << 0)
+#define ACE_HASH_ENGSEL_SHA1HMAC	(0x1 << 0)
+#define ACE_HASH_ENGSEL_SHA1HMACIN	(0x1 << 0)
+#define ACE_HASH_ENGSEL_SHA1HMACOUT	(0x9 << 0)
+#define ACE_HASH_ENGSEL_MD5HASH		(0x2 << 0)
+#define ACE_HASH_ENGSEL_MD5HMAC		(0x3 << 0)
+#define ACE_HASH_ENGSEL_MD5HMACIN	(0x3 << 0)
+#define ACE_HASH_ENGSEL_MD5HMACOUT	(0xb << 0)
+#define ACE_HASH_ENGSEL_SHA256HASH	(0x4 << 0)
+#define ACE_HASH_ENGSEL_SHA256HMAC	(0x5 << 0)
+#define ACE_HASH_ENGSEL_PRNG		(0x8 << 0)
+#define ACE_HASH_STARTBIT_ON		(1 << 4)
+#define ACE_HASH_USERIV_EN		(1 << 5)
+
+/* Hash control 2 */
+#define ACE_HASH_PAUSE_ON		(1 << 0)
+
+/* Hash control - FIFO mode */
+#define ACE_HASH_FIFO_MASK		(1 << 0)
+#define ACE_HASH_FIFO_OFF		(0 << 0)
+#define ACE_HASH_FIFO_ON		(1 << 0)
+
+/* Hash control - byte swap */
+#define ACE_HASH_SWAP_MASK		(0xf << 0)
+#define ACE_HASH_SWAPKEY_OFF		(0 << 0)
+#define	ACE_HASH_SWAPKEY_ON		(1 << 0)
+#define ACE_HASH_SWAPIV_OFF		(0 << 1)
+#define	ACE_HASH_SWAPIV_ON		(1 << 1)
+#define ACE_HASH_SWAPDO_OFF		(0 << 2)
+#define ACE_HASH_SWAPDO_ON		(1 << 2)
+#define ACE_HASH_SWAPDI_OFF		(0 << 3)
+#define ACE_HASH_SWAPDI_ON		(1 << 3)
+
+/* Hash status */
+#define ACE_HASH_BUFRDY_MASK		(1 << 0)
+#define ACE_HASH_BUFRDY_OFF		(0 << 0)
+#define ACE_HASH_BUFRDY_ON		(1 << 0)
+#define ACE_HASH_SEEDSETTING_MASK	(1 << 1)
+#define ACE_HASH_SEEDSETTING_OFF	(0 << 1)
+#define ACE_HASH_SEEDSETTING_ON		(1 << 1)
+#define ACE_HASH_PRNGBUSY_MASK		(1 << 2)
+#define ACE_HASH_PRNGBUSY_OFF		(0 << 2)
+#define ACE_HASH_PRNGBUSY_ON		(1 << 2)
+#define ACE_HASH_PARTIALDONE_MASK	(1 << 4)
+#define ACE_HASH_PARTIALDONE_OFF	(0 << 4)
+#define ACE_HASH_PARTIALDONE_ON		(1 << 4)
+#define ACE_HASH_PRNGDONE_MASK		(1 << 5)
+#define ACE_HASH_PRNGDONE_OFF		(0 << 5)
+#define ACE_HASH_PRNGDONE_ON		(1 << 5)
+#define ACE_HASH_MSGDONE_MASK		(1 << 6)
+#define ACE_HASH_MSGDONE_OFF		(0 << 6)
+#define ACE_HASH_MSGDONE_ON		(1 << 6)
+#define ACE_HASH_PRNGERROR_MASK		(1 << 7)
+#define ACE_HASH_PRNGERROR_OFF		(0 << 7)
+#define ACE_HASH_PRNGERROR_ON		(1 << 7)
+
+#endif
diff --git a/arch/arm/include/asm/arch-exynos/ace_sha.h b/arch/arm/include/asm/arch-exynos/ace_sha.h
new file mode 100644
index 0000000..ed4e4d5
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/ace_sha.h
@@ -0,0 +1,41 @@
+/*
+ * Header file for SHA firmware
+ *
+ * Copyright (c) 2012  Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef __ACE_FW_SHA1_H
+#define __ACE_FW_SHA1_H
+
+#define ACE_SHA_TYPE_SHA1	1
+#define ACE_SHA_TYPE_SHA256	2
+
+/**
+ * Computes hash value of input pbuf using ACE
+ *
+ * @param pout    A pointer to the output buffer. When complete
+ *                32 bytes are copied to pout[0]...pout[31]. Thus, a user
+ *                should allocate at least 32 bytes@pOut in advance.
+ * @param pbuf    A pointer to the input buffer
+ * @param buflen  Byte length of input buffer
+ * @param hash_type SHA1 or SHA256
+ *
+ * @return 0      Success
+ */
+int ace_sha_hash_digest(uchar *pout, uchar *pbuf, uint buflen, uint hash_type);
+
+#endif
diff --git a/arch/arm/include/asm/arch-exynos/cpu.h b/arch/arm/include/asm/arch-exynos/cpu.h
index eb34422..2a20558 100644
--- a/arch/arm/include/asm/arch-exynos/cpu.h
+++ b/arch/arm/include/asm/arch-exynos/cpu.h
@@ -62,6 +62,7 @@
 #define EXYNOS4_GPIO_PART4_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4_DP_BASE			DEVICE_NOT_AVAILABLE
 #define EXYNOS4_SPI_ISP_BASE		DEVICE_NOT_AVAILABLE
+#define EXYNOS4_ACE_SFR_BASE		DEVICE_NOT_AVAILABLE
 
 /* EXYNOS4X12 */
 #define EXYNOS4X12_GPIO_PART3_BASE	0x03860000
@@ -95,6 +96,7 @@
 #define EXYNOS4X12_I2S_BASE            DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_SPI_BASE            DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_SPI_ISP_BASE                DEVICE_NOT_AVAILABLE
+#define EXYNOS4X12_ACE_SFR_BASE		DEVICE_NOT_AVAILABLE
 
 /* EXYNOS5 Common*/
 #define EXYNOS5_I2C_SPACING		0x10000
@@ -106,6 +108,7 @@
 #define EXYNOS5_SWRESET			0x10040400
 #define EXYNOS5_SYSREG_BASE		0x10050000
 #define EXYNOS5_WATCHDOG_BASE		0x101D0000
+#define EXYNOS5_ACE_SFR_BASE            0x10830000
 #define EXYNOS5_DMC_PHY0_BASE		0x10C00000
 #define EXYNOS5_DMC_PHY1_BASE		0x10C10000
 #define EXYNOS5_GPIO_PART3_BASE		0x10D10000
@@ -205,6 +208,7 @@ static inline unsigned int samsung_get_base_##device(void)	\
 
 SAMSUNG_BASE(adc, ADC_BASE)
 SAMSUNG_BASE(clock, CLOCK_BASE)
+SAMSUNG_BASE(ace_sfr, ACE_SFR_BASE)
 SAMSUNG_BASE(dp, DP_BASE)
 SAMSUNG_BASE(sysreg, SYSREG_BASE)
 SAMSUNG_BASE(fimd, FIMD_BASE)
-- 
1.8.0

[U-Boot] [PATCH 1/4] Exynos: Add hardware accelerated SHA 256

[Kim Phillips]

On Wed, 27 Feb 2013 10:24:39 -0500
Akshay Saraswat <akshay.s@samsung.com> wrote:

> SHA-256 and SHA-1 accelerated using ACE hardware.
> 
> TEST=sha256 0x40008000 0x2B 0x40009000
> Used mm and md to write a standard string to memory location
> 0x40008000 and ran the above command to verify the output.

can we get rid of this TEST= infrastructure format?  It's not used
on upstream u-boot.

> Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
> ---
>  arch/arm/cpu/armv7/exynos/Makefile         |   4 +
>  arch/arm/cpu/armv7/exynos/ace_sha.c        | 118 +++++++++++
>  arch/arm/include/asm/arch-exynos/ace_sfr.h | 310 +++++++++++++++++++++++++++++
>  arch/arm/include/asm/arch-exynos/ace_sha.h |  41 ++++
>  arch/arm/include/asm/arch-exynos/cpu.h     |   4 +
>  5 files changed, 477 insertions(+)
>  create mode 100644 arch/arm/cpu/armv7/exynos/ace_sha.c
>  create mode 100644 arch/arm/include/asm/arch-exynos/ace_sfr.h
>  create mode 100644 arch/arm/include/asm/arch-exynos/ace_sha.h

I doubt there's anything binding this to arch-exynos, and I bet the
h/w is going to be available - if not already - on some other parts,
so it probably belongs in a new drivers/crypto directory.

> +/* Maximum input data size is 8 MB. Timeout observed for data size above 8MB */
> +#define TIMEOUT_MS		100

So if there's a drop in processor frequency, the driver times out
too early?  Not good.

> +#define SHA1_DIGEST_LEN		20
> +#define SHA256_DIGEST_LEN	32

don't duplicate definitions that already exist in include/sha*.h.

> +	if (buf_len == 0) {
> +		/* ACE H/W cannot compute hash value for empty string */
> +		if (hash_type == ACE_SHA_TYPE_SHA1)
> +			memcpy(pout, sha1_digest_emptymsg, SHA1_DIGEST_LEN);
> +		else
> +			memcpy(pout, sha256_digest_emptymsg, SHA256_DIGEST_LEN);
> +		return 0;
> +	}

there's no protection from buf_len going over the h/w 8MB limit
mentioned above - why not fall back to the s/w implementation in
both those cases?  Or, if the h/w can be programmed to perform
multiple hash updates in 8MB data chunks, add support to do that.

> +	/* Read hash result */
> +	pdigest = (unsigned int *)pout;
> +	len = (hash_type == ACE_SHA_TYPE_SHA1) ? 5 : 8;

magic numbers - use SHAx_SUM_LEN / 4.

Kim

[U-Boot] [PATCH 2/4] Exynos: config: Enable ACE HW for SHA 256 for Exynos

[Akshay Saraswat]

This enables SHA 256 for exynos.

TEST=sha256 0x40008000 0x2B 0x40009000
Used mm and md to write a standard string to memory location
0x40008000 and ran the above command to verify the output.

Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
---
 include/configs/exynos5250-dt.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
index cabd2f2..3963aaf 100644
--- a/include/configs/exynos5250-dt.h
+++ b/include/configs/exynos5250-dt.h
@@ -45,6 +45,9 @@
 /* Keep L2 Cache Disabled */
 #define CONFIG_SYS_DCACHE_OFF
 
+#define CONFIG_CMD_SHA256
+#define CONFIG_EXYNOS_ACE_SHA
+
 #define CONFIG_SYS_SDRAM_BASE		0x40000000
 #define CONFIG_SYS_TEXT_BASE		0x43E00000
 
-- 
1.8.0

[U-Boot] [PATCH 2/4] Exynos: config: Enable ACE HW for SHA 256 for Exynos

[Simon Glass]

Hi Akshay,

On Wed, Feb 27, 2013 at 7:24 AM, Akshay Saraswat <akshay.s@samsung.com> wrote:
> This enables SHA 256 for exynos.
>
> TEST=sha256 0x40008000 0x2B 0x40009000
> Used mm and md to write a standard string to memory location
> 0x40008000 and ran the above command to verify the output.
>
> Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
> ---
>  include/configs/exynos5250-dt.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
> index cabd2f2..3963aaf 100644
> --- a/include/configs/exynos5250-dt.h
> +++ b/include/configs/exynos5250-dt.h
> @@ -45,6 +45,9 @@
>  /* Keep L2 Cache Disabled */
>  #define CONFIG_SYS_DCACHE_OFF
>
> +#define CONFIG_CMD_SHA256

This should not be needed, you can use CONFIG_CMD_HASH instead.

> +#define CONFIG_EXYNOS_ACE_SHA
> +
>  #define CONFIG_SYS_SDRAM_BASE          0x40000000
>  #define CONFIG_SYS_TEXT_BASE           0x43E00000
>
> --
> 1.8.0
>

Regards,
Simon

[U-Boot] [PATCH 3/4] gen: Add sha256 command

[Akshay Saraswat]

sha256 command is added which can be used to test SHA 256 hash
algorithm.

TEST=sha256 0x40008000 0x2B 0x40009000
Used mm and md to write a standard string to memory location
0x40008000 and ran the above command to verify the output.

Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
---
 common/Makefile     |  1 +
 common/cmd_sha256.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 common/cmd_sha256.c

diff --git a/common/Makefile b/common/Makefile
index 54fcc81..6170ed5 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -201,6 +201,7 @@ COBJS-$(CONFIG_MENU) += menu.o
 COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o
 COBJS-$(CONFIG_UPDATE_TFTP) += update.o
 COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
+COBJS-$(CONFIG_CMD_SHA256) += cmd_sha256.o
 COBJS-$(CONFIG_CMD_DFU) += cmd_dfu.o
 COBJS-$(CONFIG_CMD_GPT) += cmd_gpt.o
 endif
diff --git a/common/cmd_sha256.c b/common/cmd_sha256.c
new file mode 100644
index 0000000..e4f6b56
--- /dev/null
+++ b/common/cmd_sha256.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#ifdef CONFIG_EXYNOS_ACE_SHA
+#include <asm/arch/ace_sha.h>
+#else
+#include <sha256.h>
+#endif
+
+int do_sha256(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	unsigned long inlen;
+	unsigned char *input, *out;
+	int i;
+#ifndef CONFIG_EXYNOS_ACE_SHA
+	sha256_context sha_cnxt;
+#endif
+	if (argc < 4) {
+		printf("usage: sha256 <input> <input length> <output>\n");
+		return 0;
+	}
+	input = (unsigned char *)simple_strtoul(argv[1], NULL, 16);
+	inlen = simple_strtoul(argv[2], NULL, 16);
+	out = (unsigned char *)simple_strtoul(argv[3], NULL, 16);
+
+#ifdef CONFIG_EXYNOS_ACE_SHA
+	ace_sha_hash_digest(out, input, inlen, 2);
+#else
+	sha256_starts(&sha_cnxt);
+
+	sha256_update(&sha_cnxt, input, inlen);
+
+	sha256_finish(&sha_cnxt, out);
+#endif
+
+	for (i = 0; i < 32; i++)
+		printf("0x%02X ", out[i]);
+	printf("\n");
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	sha256,	4, 1, do_sha256,
+	"print hash result",
+	"<input> <inputlength> <output>"
+);
-- 
1.8.0

[U-Boot] [PATCH 3/4] gen: Add sha256 command

[Simon Glass]

Hi Akshay,

On Wed, Feb 27, 2013 at 7:24 AM, Akshay Saraswat <akshay.s@samsung.com> wrote:
> sha256 command is added which can be used to test SHA 256 hash
> algorithm.
>
> TEST=sha256 0x40008000 0x2B 0x40009000
> Used mm and md to write a standard string to memory location
> 0x40008000 and ran the above command to verify the output.
>
> Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
> ---
>  common/Makefile     |  1 +
>  common/cmd_sha256.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 70 insertions(+)
>  create mode 100644 common/cmd_sha256.c

Rather than adding this command, can you please use 'hash sha256'
instead? This is in common/hash.c.

Regards,
Simon

>
> diff --git a/common/Makefile b/common/Makefile
> index 54fcc81..6170ed5 100644
> --- a/common/Makefile
> +++ b/common/Makefile
> @@ -201,6 +201,7 @@ COBJS-$(CONFIG_MENU) += menu.o
>  COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o
>  COBJS-$(CONFIG_UPDATE_TFTP) += update.o
>  COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
> +COBJS-$(CONFIG_CMD_SHA256) += cmd_sha256.o
>  COBJS-$(CONFIG_CMD_DFU) += cmd_dfu.o
>  COBJS-$(CONFIG_CMD_GPT) += cmd_gpt.o
>  endif
> diff --git a/common/cmd_sha256.c b/common/cmd_sha256.c
> new file mode 100644
> index 0000000..e4f6b56
> --- /dev/null
> +++ b/common/cmd_sha256.c
> @@ -0,0 +1,69 @@
> +/*
> + * Copyright 2000-2009
> + * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
> + *
> + * See file CREDITS for list of people who contributed to this
> + * project.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + */
> +
> +#include <common.h>
> +#include <command.h>
> +#ifdef CONFIG_EXYNOS_ACE_SHA
> +#include <asm/arch/ace_sha.h>
> +#else
> +#include <sha256.h>
> +#endif
> +
> +int do_sha256(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> +{
> +       unsigned long inlen;
> +       unsigned char *input, *out;
> +       int i;
> +#ifndef CONFIG_EXYNOS_ACE_SHA
> +       sha256_context sha_cnxt;
> +#endif
> +       if (argc < 4) {
> +               printf("usage: sha256 <input> <input length> <output>\n");
> +               return 0;
> +       }
> +       input = (unsigned char *)simple_strtoul(argv[1], NULL, 16);
> +       inlen = simple_strtoul(argv[2], NULL, 16);
> +       out = (unsigned char *)simple_strtoul(argv[3], NULL, 16);
> +
> +#ifdef CONFIG_EXYNOS_ACE_SHA
> +       ace_sha_hash_digest(out, input, inlen, 2);
> +#else
> +       sha256_starts(&sha_cnxt);
> +
> +       sha256_update(&sha_cnxt, input, inlen);
> +
> +       sha256_finish(&sha_cnxt, out);
> +#endif
> +
> +       for (i = 0; i < 32; i++)
> +               printf("0x%02X ", out[i]);
> +       printf("\n");
> +
> +       return 0;
> +}
> +
> +U_BOOT_CMD(
> +       sha256, 4, 1, do_sha256,
> +       "print hash result",
> +       "<input> <inputlength> <output>"
> +);
> --
> 1.8.0
>

[U-Boot] [PATCH 3/4] gen: Add sha256 command

[Simon Glass]

Hi Akshay,

On Wed, Feb 27, 2013 at 12:22 PM, Simon Glass <sjg@chromium.org> wrote:
> Hi Akshay,
>
> On Wed, Feb 27, 2013 at 7:24 AM, Akshay Saraswat <akshay.s@samsung.com> wrote:
>> sha256 command is added which can be used to test SHA 256 hash
>> algorithm.
>>
>> TEST=sha256 0x40008000 0x2B 0x40009000
>> Used mm and md to write a standard string to memory location
>> 0x40008000 and ran the above command to verify the output.
>>
>> Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
>> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
>> ---
>>  common/Makefile     |  1 +
>>  common/cmd_sha256.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  2 files changed, 70 insertions(+)
>>  create mode 100644 common/cmd_sha256.c
>
> Rather than adding this command, can you please use 'hash sha256'
> instead? This is in common/hash.c.

And to be a bit more clear, if you plumb in your sha256 implementation
into the list of implementations at the top of hash.c, and put it
earlier than the software implementation, then it will get priority.

Regards,
Simon



>
> Regards,
> Simon
>
>>
>> diff --git a/common/Makefile b/common/Makefile
>> index 54fcc81..6170ed5 100644
>> --- a/common/Makefile
>> +++ b/common/Makefile
>> @@ -201,6 +201,7 @@ COBJS-$(CONFIG_MENU) += menu.o
>>  COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o
>>  COBJS-$(CONFIG_UPDATE_TFTP) += update.o
>>  COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
>> +COBJS-$(CONFIG_CMD_SHA256) += cmd_sha256.o
>>  COBJS-$(CONFIG_CMD_DFU) += cmd_dfu.o
>>  COBJS-$(CONFIG_CMD_GPT) += cmd_gpt.o
>>  endif
>> diff --git a/common/cmd_sha256.c b/common/cmd_sha256.c
>> new file mode 100644
>> index 0000000..e4f6b56
>> --- /dev/null
>> +++ b/common/cmd_sha256.c
>> @@ -0,0 +1,69 @@
>> +/*
>> + * Copyright 2000-2009
>> + * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
>> + *
>> + * See file CREDITS for list of people who contributed to this
>> + * project.
>> + *
>> + * This program is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License as
>> + * published by the Free Software Foundation; either version 2 of
>> + * the License, or (at your option) any later version.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + * GNU General Public License for more details.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write to the Free Software
>> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
>> + * MA 02111-1307 USA
>> + */
>> +
>> +#include <common.h>
>> +#include <command.h>
>> +#ifdef CONFIG_EXYNOS_ACE_SHA
>> +#include <asm/arch/ace_sha.h>
>> +#else
>> +#include <sha256.h>
>> +#endif
>> +
>> +int do_sha256(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>> +{
>> +       unsigned long inlen;
>> +       unsigned char *input, *out;
>> +       int i;
>> +#ifndef CONFIG_EXYNOS_ACE_SHA
>> +       sha256_context sha_cnxt;
>> +#endif
>> +       if (argc < 4) {
>> +               printf("usage: sha256 <input> <input length> <output>\n");
>> +               return 0;
>> +       }
>> +       input = (unsigned char *)simple_strtoul(argv[1], NULL, 16);
>> +       inlen = simple_strtoul(argv[2], NULL, 16);
>> +       out = (unsigned char *)simple_strtoul(argv[3], NULL, 16);
>> +
>> +#ifdef CONFIG_EXYNOS_ACE_SHA
>> +       ace_sha_hash_digest(out, input, inlen, 2);
>> +#else
>> +       sha256_starts(&sha_cnxt);
>> +
>> +       sha256_update(&sha_cnxt, input, inlen);
>> +
>> +       sha256_finish(&sha_cnxt, out);
>> +#endif
>> +
>> +       for (i = 0; i < 32; i++)
>> +               printf("0x%02X ", out[i]);
>> +       printf("\n");
>> +
>> +       return 0;
>> +}
>> +
>> +U_BOOT_CMD(
>> +       sha256, 4, 1, do_sha256,
>> +       "print hash result",
>> +       "<input> <inputlength> <output>"
>> +);
>> --
>> 1.8.0
>>

[U-Boot] [PATCH 4/4] Exynos: Flush memory region before starting SHA DMA operation

[Akshay Saraswat]

SHA256 commands weren't giving desired output since the data we set
in the memory addresses through mw.l commands was not getting updated
in actual memory. Adding this patch resolves the issue.

TEST=sha256 0x40008000 0x2B 0x40009000
Used mm and md to write a standard string to memory location
0x40008000 and ran the above command to verify the output.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
---
 arch/arm/cpu/armv7/exynos/ace_sha.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/cpu/armv7/exynos/ace_sha.c b/arch/arm/cpu/armv7/exynos/ace_sha.c
index 2715a03..9ac34be 100644
--- a/arch/arm/cpu/armv7/exynos/ace_sha.c
+++ b/arch/arm/cpu/armv7/exynos/ace_sha.c
@@ -51,6 +51,11 @@ int ace_sha_hash_digest(
 	struct exynos_ace_sfr *ace_sha_reg =
 		(struct exynos_ace_sfr *) samsung_get_base_ace_sfr();
 
+	/* Flush input and output memory buffers berore starting DMA */
+	flush_dcache_range((unsigned long) pout, (unsigned long)(pout + 0x20));
+	flush_dcache_range((unsigned long) pbuf,
+					(unsigned long)(pbuf + buf_len));
+
 	if (buf_len == 0) {
 		/* ACE H/W cannot compute hash value for empty string */
 		if (hash_type == ACE_SHA_TYPE_SHA1)
-- 
1.8.0

[U-Boot] [PATCH 4/4] Exynos: Flush memory region before starting SHA DMA operation

[Kim Phillips]

On Wed, 27 Feb 2013 10:24:42 -0500
Akshay Saraswat <akshay.s@samsung.com> wrote:

> SHA256 commands weren't giving desired output since the data we set
> in the memory addresses through mw.l commands was not getting updated
> in actual memory. Adding this patch resolves the issue.

why not use the dcache flush command instead?

Kim