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drivers/flash: stm32wb: Add driver for stm32wb

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Add flash driver for stm32wb

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2019-03-27 16:52:37 +01:00 • committed by Anas Nashif
commit d777413b19
9 changed files with 314 additions and 3 deletions
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4
soc/arm/st_stm32/stm32wb/dts_fixup.h
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@ -80,4 +80,8 @@
#define DT_UART_STM32_LPUART_1_CLOCK_BUS DT_ST_STM32_LPUART_40008000_CLOCK_BUS
#define DT_UART_STM32_LPUART_1_HW_FLOW_CONTROL DT_ST_STM32_LPUART_40008000_HW_FLOW_CONTROL
#define DT_FLASH_DEV_BASE_ADDRESS DT_ST_STM32WB_FLASH_CONTROLLER_58004000_BASE_ADDRESS
#define DT_FLASH_DEV_NAME DT_ST_STM32WB_FLASH_CONTROLLER_58004000_LABEL
/* End of SoC Level DTS fixup file */

63
soc/arm/st_stm32/stm32wb/flash_registers.h Normal file
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@ -0,0 +1,63 @@
/*
* Copyright (c) 2019 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _STM32WBX_FLASH_REGISTERS_H_
#define _STM32WBX_FLASH_REGISTERS_H_
enum {
STM32WBX_FLASH_LATENCY_0 = 0x0,
STM32WBX_FLASH_LATENCY_1 = 0x1,
STM32WBX_FLASH_LATENCY_2 = 0x2,
STM32WBX_FLASH_LATENCY_3 = 0x3,
STM32WBX_FLASH_LATENCY_4 = 0x4,
};
/* 3.7.1 FLASH_ACR */
union __ef_acr {
u32_t val;
struct {
u32_t latency :3 __packed;
u32_t rsvd__3_7 :5 __packed;
u32_t prften :1 __packed;
u32_t icen :1 __packed;
u32_t dcen :1 __packed;
u32_t icrst :1 __packed;
u32_t dcrst :1 __packed;
u32_t rsvd__13_14 :2 __packed;
u32_t pes :1 __packed;
u32_t empty :1 __packed;
u32_t rsvd__17_31 :15 __packed;
} bit;
};
/* FLASH register map */
struct stm32wbx_flash {
volatile union __ef_acr acr;
volatile u32_t rsvd_0;
volatile u32_t keyr;
volatile u32_t optkeyr;
volatile u32_t sr;
volatile u32_t cr;
volatile u32_t eccr;
volatile u32_t rsvd_1;
volatile u32_t optr;
volatile u32_t pcrop1asr;
volatile u32_t pcrop1aer;
volatile u32_t wrp1ar;
volatile u32_t wrp1br;
volatile u32_t pcrop1bsr;
volatile u32_t pcrop1ber;
volatile u32_t ipccbr;
volatile u32_t rsvd_2[8];
volatile u32_t c2acr;
volatile u32_t c2sr;
volatile u32_t c2cr;
volatile u32_t rsvd_3[7];
volatile u32_t sfr;
volatile u32_t srrvr;
};
#endif /* _STM32WBX_FLASH_REGISTERS_H_ */