diff options
Diffstat (limited to 'src/flash/nor/stm32x.c')
| -rw-r--r-- | src/flash/nor/stm32x.c | 75 |
1 files changed, 74 insertions, 1 deletions
diff --git a/src/flash/nor/stm32x.c b/src/flash/nor/stm32x.c index 7779ea3a..0edadfd2 100644 --- a/src/flash/nor/stm32x.c +++ b/src/flash/nor/stm32x.c @@ -25,12 +25,85 @@ #endif #include "imp.h" -#include "stm32x.h" #include <helper/binarybuffer.h> #include <target/algorithm.h> #include <target/armv7m.h> +/* stm32x register locations */ + +#define STM32_FLASH_ACR 0x40022000 +#define STM32_FLASH_KEYR 0x40022004 +#define STM32_FLASH_OPTKEYR 0x40022008 +#define STM32_FLASH_SR 0x4002200C +#define STM32_FLASH_CR 0x40022010 +#define STM32_FLASH_AR 0x40022014 +#define STM32_FLASH_OBR 0x4002201C +#define STM32_FLASH_WRPR 0x40022020 + +/* option byte location */ + +#define STM32_OB_RDP 0x1FFFF800 +#define STM32_OB_USER 0x1FFFF802 +#define STM32_OB_DATA0 0x1FFFF804 +#define STM32_OB_DATA1 0x1FFFF806 +#define STM32_OB_WRP0 0x1FFFF808 +#define STM32_OB_WRP1 0x1FFFF80A +#define STM32_OB_WRP2 0x1FFFF80C +#define STM32_OB_WRP3 0x1FFFF80E + +/* FLASH_CR register bits */ + +#define FLASH_PG (1 << 0) +#define FLASH_PER (1 << 1) +#define FLASH_MER (1 << 2) +#define FLASH_OPTPG (1 << 4) +#define FLASH_OPTER (1 << 5) +#define FLASH_STRT (1 << 6) +#define FLASH_LOCK (1 << 7) +#define FLASH_OPTWRE (1 << 9) + +/* FLASH_SR register bits */ + +#define FLASH_BSY (1 << 0) +#define FLASH_PGERR (1 << 2) +#define FLASH_WRPRTERR (1 << 4) +#define FLASH_EOP (1 << 5) + +/* STM32_FLASH_OBR bit definitions (reading) */ + +#define OPT_ERROR 0 +#define OPT_READOUT 1 +#define OPT_RDWDGSW 2 +#define OPT_RDRSTSTOP 3 +#define OPT_RDRSTSTDBY 4 + +/* register unlock keys */ + +#define KEY1 0x45670123 +#define KEY2 0xCDEF89AB + + +struct stm32x_options +{ + uint16_t RDP; + uint16_t user_options; + uint16_t protection[4]; +}; + +struct stm32x_flash_bank +{ + struct stm32x_options option_bytes; + struct working_area *write_algorithm; + int ppage_size; + int probed; +}; + +struct stm32x_mem_layout { + uint32_t sector_start; + uint32_t sector_size; +}; + static int stm32x_mass_erase(struct flash_bank *bank); /* flash bank stm32x <base> <size> 0 0 <target#> |