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drivers: flash: Add STM32G4X flash support

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Add flash driver support for STM32G4X SoC series.

Signed-off-by: Richard Osterloh <richard.osterloh@gmail.com>
This commit is contained in:
Richard Osterloh 2019-09-04 09:43:59 +01:00 • committed by Andrew Boie
commit c68e027c28
9 changed files with 290 additions and 4 deletions
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3
soc/arm/st_stm32/stm32g4/dts_fixup.h
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@ -116,4 +116,7 @@
#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_STM32G4_FLASH_CONTROLLER_40022000_BASE_ADDRESS
#define DT_FLASH_DEV_NAME DT_ST_STM32G4_FLASH_CONTROLLER_40022000_LABEL
/* End of SoC Level DTS fixup file */

67
soc/arm/st_stm32/stm32g4/flash_registers.h Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2019 Richard Osterloh <richard.osterloh@gmail.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _STM32G4X_FLASH_REGISTERS_H_
#define _STM32G4X_FLASH_REGISTERS_H_
enum {
STM32G4X_FLASH_LATENCY_0 = 0x0,
STM32G4X_FLASH_LATENCY_1 = 0x1,
STM32G4X_FLASH_LATENCY_2 = 0x2,
STM32G4X_FLASH_LATENCY_3 = 0x3,
STM32G4X_FLASH_LATENCY_4 = 0x4,
STM32G4X_FLASH_LATENCY_5 = 0x5,
STM32G4X_FLASH_LATENCY_6 = 0x6,
STM32G4X_FLASH_LATENCY_7 = 0x7,
STM32G4X_FLASH_LATENCY_8 = 0x8,
STM32G4X_FLASH_LATENCY_9 = 0x9,
STM32G4X_FLASH_LATENCY_10 = 0x10,
STM32G4X_FLASH_LATENCY_11 = 0x11,
STM32G4X_FLASH_LATENCY_12 = 0x12,
STM32G4X_FLASH_LATENCY_13 = 0x13,
STM32G4X_FLASH_LATENCY_14 = 0x14,
};
/* 3.7.1 FLASH_ACR */
union __ef_acr {
u32_t val;
struct {
u32_t latency :4 __packed;
u32_t rsvd__4_7 :4 __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 run_pd :1 __packed;
u32_t sleep_pd :1 __packed;
u32_t rsvd__15_17 :3 __packed;
u32_t dbg_swend :1 __packed;
u32_t rsvd__19_31 :13 __packed;
} bit;
};
/* 3.7.13 Embedded flash registers */
struct stm32g4x_flash {
volatile union __ef_acr acr;
volatile u32_t pdkeyr;
volatile u32_t keyr;
volatile u32_t optkeyr;
volatile u32_t sr;
volatile u32_t cr;
volatile u32_t eccr;
volatile u32_t optr;
volatile u32_t pcrop1sr;
volatile u32_t pcrop1er;
volatile u32_t wrp1ar;
volatile u32_t wrp1br;
volatile u32_t pcrop2sr;
volatile u32_t pcrop2er;
volatile u32_t wrp2ar;
volatile u32_t wrp2br;
};
#endif /* _STM32G4X_FLASH_REGISTERS_H_ */