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drivers: flash: Add STM32G0XX flash support

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Add flash support for STM32G0X SoC series.

Signed-off-by: Philippe Retornaz <philippe@shapescale.com
Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2019-07-05 15:02:21 +02:00 • committed by Maureen Helm
commit bfc2ea6dd5
8 changed files with 267 additions and 6 deletions
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3
soc/arm/st_stm32/stm32g0/dts_fixup.h
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@ -8,4 +8,7 @@
#define DT_NUM_IRQ_PRIO_BITS DT_ARM_V6M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
#define DT_FLASH_DEV_BASE_ADDRESS DT_ST_STM32G0_FLASH_CONTROLLER_40022000_BASE_ADDRESS
#define DT_FLASH_DEV_NAME DT_ST_STM32G0_FLASH_CONTROLLER_40022000_LABEL
/* End of SoC Level DTS fixup file */

53
soc/arm/st_stm32/stm32g0/flash_registers.h Normal file
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@ -0,0 +1,53 @@
/*
* Copyright (c) 2019 Philippe Retornaz <philippe@shapescale.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _STM32G0X_FLASH_REGISTERS_H_
#define _STM32G0X_FLASH_REGISTERS_H_
#define FLASH_SR_BSY FLASH_SR_BSY1
enum {
STM32_FLASH_LATENCY_0 = 0x0,
STM32_FLASH_LATENCY_1 = 0x1,
STM32_FLASH_LATENCY_2 = 0x2,
};
/* 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 rsvd__10 :1 __packed;
u32_t icrst :1 __packed;
u32_t rsvd__12_15 :4 __packed;
u32_t empty :1 __packed;
u32_t rsvd__17 :1 __packed;
u32_t dbg_swend :1 __packed;
u32_t rsvd__19_31 :13 __packed;
} bit;
};
/* FLASH register map */
struct stm32g0x_flash {
volatile union __ef_acr acr;
volatile u32_t rsvd__4;
volatile u32_t keyr;
volatile u32_t optkeyr;
volatile u32_t sr;
volatile u32_t cr;
volatile u32_t eccr;
volatile u32_t rsvd_0;
volatile u32_t optr;
volatile u32_t pcrop1sr;
volatile u32_t pcrop1er;
volatile u32_t wrp1ar;
volatile u32_t wrp1br;
};
#endif /* _STM32G0X_FLASH_REGISTERS_H_ */