diff options
Diffstat (limited to 'libmaple/stm32f1')
| -rw-r--r-- | libmaple/stm32f1/flash.c | 41 | ||||
| -rw-r--r-- | libmaple/stm32f1/include/family/flash.h | 135 | ||||
| -rw-r--r-- | libmaple/stm32f1/rules.mk | 2 |
3 files changed, 178 insertions, 0 deletions
diff --git a/libmaple/stm32f1/flash.c b/libmaple/stm32f1/flash.c new file mode 100644 index 0000000..73fc93f --- /dev/null +++ b/libmaple/stm32f1/flash.c @@ -0,0 +1,41 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung. + * Copyright (c) 2011 LeafLabs, LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file libmaple/stm32f1/flash.c + * @brief Flash management functions + */ + +#include <libmaple/flash.h> +#include <libmaple/bitband.h> + +/** + * @brief Turn on the hardware prefetcher. + */ +void flash_enable_prefetch(void) { + *bb_perip(&FLASH_BASE->ACR, FLASH_ACR_PRFTBE_BIT) = 1; +} diff --git a/libmaple/stm32f1/include/family/flash.h b/libmaple/stm32f1/include/family/flash.h new file mode 100644 index 0000000..aedb326 --- /dev/null +++ b/libmaple/stm32f1/include/family/flash.h @@ -0,0 +1,135 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file libmaple/stm32f1/flash.h + * @brief STM32F1 Flash header. + * + * Provides register map, base pointer, and register bit definitions + * for the Flash controller on the STM32F1 line. + */ + +#ifndef _LIBMAPLE_STM32F1_FLASH_H_ +#define _LIBMAPLE_STM32F1_FLASH_H_ + +#ifdef __cplusplus +extern "C"{ +#endif + +#include <libmaple/libmaple.h> + +/* + * Register map + */ + +/** Flash register map type */ +typedef struct flash_reg_map { + __io uint32 ACR; /**< Access control register */ + __io uint32 KEYR; /**< Key register */ + __io uint32 OPTKEYR; /**< OPTKEY register */ + __io uint32 SR; /**< Status register */ + __io uint32 CR; /**< Control register */ + __io uint32 AR; /**< Address register */ + __io uint32 OBR; /**< Option byte register */ + __io uint32 WRPR; /**< Write protection register */ +} flash_reg_map; + +/** Flash register map base pointer */ +#define FLASH_BASE ((struct flash_reg_map*)0x40022000) + +/* + * Register bit definitions + */ + +/* Access control register */ + +#define FLASH_ACR_PRFTBS_BIT 5 +#define FLASH_ACR_PRFTBE_BIT 4 +#define FLASH_ACR_HLFCYA_BIT 3 + +#define FLASH_ACR_PRFTBS BIT(FLASH_ACR_PRFTBS_BIT) +#define FLASH_ACR_PRFTBE BIT(FLASH_ACR_PRFTBE_BIT) +#define FLASH_ACR_HLFCYA BIT(FLASH_ACR_HLFCYA_BIT) +#define FLASH_ACR_LATENCY 0x7 + +/* Status register */ + +#define FLASH_SR_EOP_BIT 5 +#define FLASH_SR_WRPRTERR_BIT 4 +#define FLASH_SR_PGERR_BIT 2 +#define FLASH_SR_BSY_BIT 0 + +#define FLASH_SR_EOP BIT(FLASH_SR_EOP_BIT) +#define FLASH_SR_WRPRTERR BIT(FLASH_SR_WRPRTERR_BIT) +#define FLASH_SR_PGERR BIT(FLASH_SR_PGERR_BIT) +#define FLASH_SR_BSY BIT(FLASH_SR_BSY_BIT) + +/* Control register */ + +#define FLASH_CR_EOPIE_BIT 12 +#define FLASH_CR_ERRIE_BIT 10 +#define FLASH_CR_OPTWRE_BIT 9 +#define FLASH_CR_LOCK_BIT 7 +#define FLASH_CR_STRT_BIT 6 +#define FLASH_CR_OPTER_BIT 5 +#define FLASH_CR_OPTPG_BIT 4 +#define FLASH_CR_MER_BIT 2 +#define FLASH_CR_PER_BIT 1 +#define FLASH_CR_PG_BIT 0 + +#define FLASH_CR_EOPIE BIT(FLASH_CR_EOPIE_BIT) +#define FLASH_CR_ERRIE BIT(FLASH_CR_ERRIE_BIT) +#define FLASH_CR_OPTWRE BIT(FLASH_CR_OPTWRE_BIT) +#define FLASH_CR_LOCK BIT(FLASH_CR_LOCK_BIT) +#define FLASH_CR_STRT BIT(FLASH_CR_STRT_BIT) +#define FLASH_CR_OPTER BIT(FLASH_CR_OPTER_BIT) +#define FLASH_CR_OPTPG BIT(FLASH_CR_OPTPG_BIT) +#define FLASH_CR_MER BIT(FLASH_CR_MER_BIT) +#define FLASH_CR_PER BIT(FLASH_CR_PER_BIT) +#define FLASH_CR_PG BIT(FLASH_CR_PG_BIT) + +/* Option byte register */ + +#define FLASH_OBR_nRST_STDBY_BIT 4 +#define FLASH_OBR_nRST_STOP_BIT 3 +#define FLASH_OBR_WDG_SW_BIT 2 +#define FLASH_OBR_RDPRT_BIT 1 +#define FLASH_OBR_OPTERR_BIT 0 + +#define FLASH_OBR_DATA1 (0xFF << 18) +#define FLASH_OBR_DATA0 (0xFF << 10) +#define FLASH_OBR_USER 0x3FF +#define FLASH_OBR_nRST_STDBY BIT(FLASH_OBR_nRST_STDBY_BIT) +#define FLASH_OBR_nRST_STOP BIT(FLASH_OBR_nRST_STOP_BIT) +#define FLASH_OBR_WDG_SW BIT(FLASH_OBR_WDG_SW_BIT) +#define FLASH_OBR_RDPRT BIT(FLASH_OBR_RDPRT_BIT) +#define FLASH_OBR_OPTERR BIT(FLASH_OBR_OPTERR_BIT) + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/libmaple/stm32f1/rules.mk b/libmaple/stm32f1/rules.mk index 3c87920..2bdc423 100644 --- a/libmaple/stm32f1/rules.mk +++ b/libmaple/stm32f1/rules.mk @@ -10,7 +10,9 @@ CFLAGS_$(d) = -I$(d) $(LIBMAPLE_INCLUDES) -Wall -Werror # Local rules and targets sSRCS_$(d) := isrs_performance.S \ vector_table_performance.S + cSRCS_$(d) := rcc.c +cSRCS_$(d) += flash.c sFILES_$(d) := $(sSRCS_$(d):%=$(d)/%) cFILES_$(d) := $(cSRCS_$(d):%=$(d)/%) |