[stm32] Added basic support for hash processor

Added hash processor register definitions and main functions. Hash
processor is supported in stm32f21, stm32f41 and stm32f43 and can be
used to calculate Md5 and Sha1.

include/libopencm3/stm32/common/hash_common_f24.h

@@ -0,0 +1,177 @@
+/** @addtogroup hash_defines
+
+@author @htmlonly &copy; @endhtmlonly 2013 Mikhail Avkhimenia <mikhail@avkhimenia.net>
+
+*/
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2013 Mikhail Avkhimenia <mikhail@avkhimenia.net>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**@{*/
+
+#ifdef LIBOPENCM3_HASH_H
+#ifndef LIBOPENCM3_HASH_COMMON_F24_H
+#define LIBOPENCM3_HASH_COMMON_F24_H
+
+#include <libopencm3/cm3/common.h>
+
+/* --- Convenience macros -------------------------------------------------- */
+
+/****************************************************************************/
+/** @defgroup hash_reg_base HASH register base addresses
+@ingroup STM32F_hash_defines
+
+@{*/
+#define HASH_BASE 	(PERIPH_BASE_AHB2 + 0x60400)
+#define HASH		HASH_BASE
+/**@}*/
+
+/* --- HASH registers ------------------------------------------------------ */
+
+/* HASH control register (HASH_CR) */
+#define HASH_CR 	MMIO32(HASH + 0x00)
+
+/* HASH data input register (HASH_DIR) */
+#define HASH_DIN 	MMIO32(HASH + 0x04)
+
+/* HASH start register (HASH_STR) */
+#define HASH_STR 	MMIO32(HASH + 0x08)
+
+/* HASH digest registers (HASH_HR[5]) */
+#define HASH_HR 	((volatile uint32_t*)(HASH + 0x0C)) //x5
+
+/* HASH interrupt enable register (HASH_IMR) */
+#define HASH_IMR 	MMIO32(HASH + 0x20)
+
+/* HASH status register (HASH_SR) */
+#define HASH_SR 	MMIO32(HASH + 0x28)
+
+/* HASH context swap registers (HASH_CSR[51]) */
+#define HASH_CSR 	((volatile uint32_t*)(HASH + 0xF8)) //x51
+
+/* --- HASH_CR values ------------------------------------------------------ */
+
+/* INIT: Initialize message digest calculation */
+#define HASH_CR_INIT		(1 << 2)
+
+/* DMAE: DMA enable */
+#define HASH_CR_DMAE		(1 << 3)
+
+/* DATATYPE: Data type selection */
+/****************************************************************************/
+/** @defgroup hash_data_type HASH Data Type
+@ingroup hash_defines
+
+@{*/
+#define HASH_DATA_32BIT			(0 << 4)
+#define HASH_DATA_16BIT			(1 << 4)
+#define HASH_DATA_8BIT			(2 << 4)
+#define HASH_DATA_BITSTRING		(3 << 4)
+/**@}*/
+#define HASH_CR_DATATYPE	(3 << 4)
+
+/* MODE: Mode selection */
+/****************************************************************************/
+/** @defgroup hash_mode HASH Mode
+@ingroup hash_defines
+
+@{*/
+#define HASH_MODE_HASH		(0 << 6)
+#define HASH_MODE_HMAC		(1 << 6)
+/**@}*/
+#define HASH_CR_MODE		(1 << 6)
+
+/* ALGO: Algorithm selection */
+/****************************************************************************/
+/** @defgroup hash_algorithm HASH Algorithm
+@ingroup hash_defines
+
+@{*/
+#define HASH_ALGO_SHA1		(0 << 7)
+#define HASH_ALGO_MD5		(1 << 7)
+/**@}*/
+#define HASH_CR_ALGO		(1 << 7)
+
+/* NBW: Number of words already pushed */
+#define HASH_CR_NBW			(15 << 8)
+
+/* DINNE: DIN(Data input register) not empty */
+#define HASH_CR_DINNE		(1 << 12)
+
+/* LKEY: Long key selection */
+/****************************************************************************/
+/** @defgroup hash_key_length HASH Key length
+@ingroup hash_defines
+
+@{*/
+#define HASH_KEY_SHORT		(0 << 16)
+#define HASH_KEY_LONG		(1 << 16)
+/**@}*/
+#define HASH_CR_LKEY		(1 << 16)
+
+/* --- HASH_STR values ----------------------------------------------------- */
+
+/* NBLW: Number of valid bits in the last word of the message in the bit string */
+#define HASH_STR_NBW		(31 << 0)
+
+/* DCAL: Digest calculation */
+#define HASH_STR_DCAL		(1 << 8)
+
+/* --- HASH_IMR values ----------------------------------------------------- */
+
+/* DINIE: Data input interrupt enable */
+#define HASH_IMR_DINIE		(1 << 0)
+
+/* DCIE: Digest calculation completion interrupt enable */
+#define HASH_IMR_DCIE		(1 << 1)
+
+/* --- HASH_SR values ------------------------------------------------------ */
+
+/* DINIS: Data input interrupt status */
+#define HASH_SR_DINIS		(1 << 0)
+
+/* DCIS: Digest calculation completion interrupt status */
+#define HASH_SR_DCIS		(1 << 1)
+
+/* DMAS: DMA Status */
+#define HASH_SR_DMAS		(1 << 2)
+
+/* BUSY: Busy bit */
+#define HASH_SR_BUSY		(1 << 3)
+
+/* --- HASH function prototypes ------------------------------------------------------- */
+
+BEGIN_DECLS
+
+void hash_set_mode(u8 mode);
+void hash_set_algorithm(u8 algorithm);
+void hash_set_data_type(u8 datatype);
+void hash_set_key_length(u8 keylength);
+void hash_set_last_word_valid_bits(u8 validbits);
+void hash_init();
+void hash_add_data(u32 data);
+void hash_digest();
+void hash_get_result(u32 *data);
+
+END_DECLS
+/**@}*/
+#endif
+#else
+#warning "hash_common_f24.h should not be included explicitly, only via hash.h"
+#endif

include/libopencm3/stm32/f2/hash.h

@@ -0,0 +1,37 @@
+/** @defgroup hash_defines HASH Defines
+
+@ingroup STM32F2xx_defines
+
+@brief Defined Constants and Types for the STM32F2xx HASH Controller
+
+@version 1.0.0
+
+@date 31 May 2013
+
+LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_HASH_H
+#define LIBOPENCM3_HASH_H
+
+#include <libopencm3/stm32/memorymap.h>
+#include <libopencm3/stm32/common/hash_common_f24.h>
+
+#endif

include/libopencm3/stm32/f4/hash.h

@@ -0,0 +1,37 @@
+/** @defgroup hash_defines HASH Defines
+
+@ingroup STM32F4xx_defines
+
+@brief Defined Constants and Types for the STM32F4xx HASH Controller
+
+@version 1.0.0
+
+@date 31 May 2013
+
+LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_HASH_H
+#define LIBOPENCM3_HASH_H
+
+#include <libopencm3/stm32/memorymap.h>
+#include <libopencm3/stm32/common/hash_common_f24.h>
+
+#endif

include/libopencm3/stm32/hash.h

@@ -0,0 +1,26 @@
+/* This provides unification of code over STM32F subfamilies */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(STM32F2)
+#       include <libopencm3/stm32/f2/hash.h>
+#elif defined(STM32F4)
+#       include <libopencm3/stm32/f4/hash.h>
+#else
+#       error "hash processor is supported only in stm32f21, stm32f41 and stm32f43 families."
+#endif

lib/stm32/common/hash_common_f24.c

@@ -0,0 +1,159 @@
+/** @addtogroup hash_file
+
+@author @htmlonly &copy; @endhtmlonly 2013 Mikhail Avkhimenia <mikhail@avkhimenia.net>
+
+This library supports the HASH processor in the STM32F2 and STM32F4
+series of ARM Cortex Microcontrollers by ST Microelectronics.
+
+LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2013 Mikhail Avkhimenia <mikhail@avkhimenia.net>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**@{*/
+
+#include <libopencm3/stm32/hash.h>
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Set Mode
+
+Sets up the specified mode - either HASH or HMAC.
+
+@param[in] mode unsigned int8. Hash processor mode: @ref hash_mode
+*/
+
+void hash_set_mode(u8 mode)
+{
+	HASH_CR &= ~HASH_CR_MODE;
+	HASH_CR |= mode;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Set Algorithm
+
+Sets up the specified algorithm - either MD5 or SHA1.
+
+@param[in] algorithm unsigned int8. Hash algorithm: @ref hash_algorithm
+*/
+
+void hash_set_algorithm(u8 algorithm)
+{
+	HASH_CR &= ~HASH_CR_ALGO;
+	HASH_CR |= algorithm;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Set Data Type
+
+Sets up the specified data type: 32Bit, 16Bit, 8Bit, Bitstring.
+
+@param[in] datatype unsigned int8. Hash data type: @ref hash_data_type
+*/
+
+void hash_set_data_type(u8 datatype)
+{
+	HASH_CR &= ~HASH_CR_DATATYPE;
+	HASH_CR |= datatype;	
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Set Key Length
+
+Sets up the specified key length: Long, Short.
+
+@param[in] keylength unsigned int8. Hash data type: @ref hash_key_length
+*/
+
+void hash_set_key_length(u8 keylength)
+{
+	HASH_CR &= ~HASH_CR_LKEY;
+	HASH_CR |= keylength;	
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Set Last Word Valid Bits
+
+Specifies the number of valid bits in the last word.
+
+@param[in] validbits unsigned int8. Number of valid bits.
+*/
+
+void hash_set_last_word_valid_bits(u8 validbits)
+{
+	HASH_STR &= ~(HASH_STR_NBW);
+	HASH_STR |= 32 - validbits;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Init
+
+Initializes the HASH processor.
+
+*/
+
+void hash_init()
+{
+	HASH_CR |= HASH_CR_INIT;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Add data
+
+Puts data into the HASH processor's queue.
+
+@param[in] data unsigned int32. Hash input data.
+*/
+
+void hash_add_data(u32 data)
+{
+	HASH_DIN = data;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Digest
+
+Starts the processing of the last data block.
+
+*/
+
+void hash_digest()
+{
+	HASH_STR |= HASH_STR_DCAL;
+}
+
+/*-----------------------------------------------------------------------------*/
+/** @brief HASH Get Hash Result
+
+Makes a copy of the resulting hash.
+
+@param[out] data unsigned int32. Hash 4\5 words long depending on the algorithm.
+@param[in] algorithm unsigned int8. Hash algorithm: @ref hash_algorithm
+*/
+
+void hash_get_result(u32 *data)
+{
+	data[0] = HASH_HR[0];
+	data[1] = HASH_HR[1];
+	data[2] = HASH_HR[2];
+	data[3] = HASH_HR[3];
+
+	if ((HASH_CR & HASH_CR_ALGO) == HASH_ALGO_SHA1)
+		data[4] = HASH_HR[4];
+}

lib/stm32/f2/Makefile

@@ -39,7 +39,7 @@ OBJS            += crc_common_all.o dac_common_all.o dma_common_f24.o \
                    gpio_common_all.o gpio_common_f24.o i2c_common_all.o \
                    iwdg_common_all.o rtc_common_bcd.o spi_common_all.o \
                    timer_common_all.o timer_common_f24.o usart_common_all.o \
-									 flash_common_f24.o
+									 flash_common_f24.o hash_common_f24.o
 
 VPATH += ../../usb:../:../../cm3:../common
 

lib/stm32/f4/Makefile

@@ -40,7 +40,7 @@ OBJS            += crc_common_all.o dac_common_all.o dma_common_f24.o \
                    gpio_common_all.o gpio_common_f24.o i2c_common_all.o \
                    iwdg_common_all.o pwr_common_all.o rtc_common_bcd.o \
                    spi_common_all.o timer_common_all.o timer_common_f24.o \
-                   usart_common_all.o flash_common_f24.o
+                   usart_common_all.o flash_common_f24.o hash_common_f24.o
 
 OBJS            += usb.o usb_standard.o usb_control.o usb_fx07_common.o \
 		   usb_f107.o usb_f207.o