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flash/stm32: driver for STM32F4x series

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Change-Id: I0f90bcda7a694de81c594a6616da0faf40306702
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
This commit is contained in:
Jorge Ramirez-Ortiz 2017-01-29 18:01:38 +01:00 • committed by Kumar Gala
commit 29a8e0292e
6 changed files with 340 additions and 9 deletions
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58
arch/arm/soc/st_stm32/stm32f4/flash_map.h Normal file
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@ -0,0 +1,58 @@
/*
* Copyright (c) 2017 Linaro Limited.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _STM32F4X_FLASH_MAP_H_
#define _STM32F4X_FLASH_MAP_H_
#include "sys/types.h"
struct stm32f4x_flash_sector {
const off_t start;
const off_t end;
};
#define STM32F4X_FLASH_SECTOR(offset, bytes) \
{ \
.start = offset, \
.end = offset + bytes - 1, \
}
__attribute__((unused))
struct stm32f4x_flash_sector stm32f4xx_sectors[] = {
STM32F4X_FLASH_SECTOR(0x00000, KB(16)),
STM32F4X_FLASH_SECTOR(0x04000, KB(16)),
STM32F4X_FLASH_SECTOR(0x08000, KB(16)),
STM32F4X_FLASH_SECTOR(0x0c000, KB(16)),
STM32F4X_FLASH_SECTOR(0x10000, KB(64)),
STM32F4X_FLASH_SECTOR(0x20000, KB(128)),
STM32F4X_FLASH_SECTOR(0x40000, KB(128)),
#ifdef CONFIG_SOC_STM32F401XE
STM32F4X_FLASH_SECTOR(0x60000, KB(128)),
#endif
};
#define STM32F4X_FLASH_TIMEOUT ((uint32_t) 0x000B0000)
#define STM32F4X_SECTOR_MASK ((uint32_t) 0xFFFFFF07)
#define STM32F4X_SECTORS ARRAY_SIZE(stm32f4xx_sectors)
#define STM32F4X_FLASH_END \
(stm32f4xx_sectors[ARRAY_SIZE(stm32f4xx_sectors) - 1].end)
int stm32f4x_get_sector(off_t offset)
{
int i;
for (i = 0; i < STM32F4X_SECTORS; i++) {
if (offset > stm32f4xx_sectors[i].end) {
continue;
}
break;
}
return i;
}
#endif /* _STM32F4X_FLASHMAP_H_ */

8
arch/arm/soc/st_stm32/stm32f4/flash_registers.h
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@ -40,12 +40,12 @@ union __flash_acr {
/* 3.8.7 Embedded flash registers */
struct stm32f4x_flash {
union __flash_acr acr;
uint32_t key;
uint32_t optkey;
volatile union __flash_acr acr;
volatile uint32_t key;
volatile uint32_t optkey;
volatile uint32_t status;
volatile uint32_t ctrl;
uint32_t optctrl;
volatile uint32_t optctrl;
};
/**