diff options
| -rw-r--r-- | chip/stm32/system.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/chip/stm32/system.c b/chip/stm32/system.c index 27ed7398e9..89ee7a76e4 100644 --- a/chip/stm32/system.c +++ b/chip/stm32/system.c @@ -40,7 +40,14 @@ static uint16_t bkpdata_read(enum bkpdata_index index) if (index < 0 || index >= STM32_BKP_ENTRIES) return 0; +#if defined(CHIP_FAMILY_STM32L) || defined(CHIP_FAMILY_STM32F0) + if (index & 1) + return STM32_BKP_DATA(index >> 1) >> 16; + else + return STM32_BKP_DATA(index >> 1) & 0xFFFF; +#else return STM32_BKP_DATA(index); +#endif } /** @@ -53,7 +60,19 @@ static int bkpdata_write(enum bkpdata_index index, uint16_t value) if (index < 0 || index >= STM32_BKP_ENTRIES) return EC_ERROR_INVAL; +#if defined(CHIP_FAMILY_STM32L) || defined(CHIP_FAMILY_STM32F0) + if (index & 1) { + uint32_t val = STM32_BKP_DATA(index >> 1); + val = (val & 0x0000FFFF) | (value << 16); + STM32_BKP_DATA(index >> 1) = val; + } else { + uint32_t val = STM32_BKP_DATA(index >> 1); + val = (val & 0xFFFF0000) | value; + STM32_BKP_DATA(index >> 1) = val; + } +#else STM32_BKP_DATA(index) = value; +#endif return EC_SUCCESS; } |