diff options
Diffstat (limited to 'ports/stm32/storage.c')
| -rw-r--r-- | ports/stm32/storage.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ports/stm32/storage.c b/ports/stm32/storage.c index d26ac821e..066fb48a6 100644 --- a/ports/stm32/storage.c +++ b/ports/stm32/storage.c @@ -171,6 +171,12 @@ bool storage_read_block(uint8_t *dest, uint32_t block) { return true; + } else if (block < FLASH_PART1_START_BLOCK) { + // Blocks between MBR and first partition: return zeros + // (This handles blocks 1 to FLASH_PART1_START_BLOCK-1) + memset(dest, 0, FLASH_BLOCK_SIZE); + return true; + #if defined(MICROPY_HW_BDEV_READBLOCK) } else if (FLASH_PART1_START_BLOCK <= block && block < FLASH_PART1_START_BLOCK + MICROPY_HW_BDEV_IOCTL(BDEV_IOCTL_NUM_BLOCKS, 0)) { return MICROPY_HW_BDEV_READBLOCK(dest, block - FLASH_PART1_START_BLOCK); @@ -184,6 +190,10 @@ bool storage_write_block(const uint8_t *src, uint32_t block) { if (block == 0) { // can't write MBR, but pretend we did return true; + } else if (block < FLASH_PART1_START_BLOCK) { + // Blocks between MBR and first partition: ignore writes + // (This handles blocks 1 to FLASH_PART1_START_BLOCK-1) + return true; #if defined(MICROPY_HW_BDEV_WRITEBLOCK) } else if (FLASH_PART1_START_BLOCK <= block && block < FLASH_PART1_START_BLOCK + MICROPY_HW_BDEV_IOCTL(BDEV_IOCTL_NUM_BLOCKS, 0)) { return MICROPY_HW_BDEV_WRITEBLOCK(src, block - FLASH_PART1_START_BLOCK); |