diff options
Diffstat (limited to 'stm50.c')
-rw-r--r-- | stm50.c | 24 |
1 files changed, 18 insertions, 6 deletions
@@ -84,10 +84,9 @@ int unlock_stm50_uniform(struct flashctx *flash) return 0; } -/* This function is unused. */ -int erase_sector_stm50(struct flashctx *flash, unsigned int sector, unsigned int sectorsize) +static int stm50_erase_sector(struct flashctx *flash, unsigned int addr) { - chipaddr bios = flash->virtual_memory + sector; + chipaddr bios = flash->virtual_memory + addr; // clear status register chip_writeb(flash, 0x50, bios); @@ -96,8 +95,21 @@ int erase_sector_stm50(struct flashctx *flash, unsigned int sector, unsigned int chip_writeb(flash, 0xd0, bios); programmer_delay(10); - wait_82802ab(flash); + uint8_t status = wait_82802ab(flash); + print_status_82802ab(status); - /* FIXME: Check the status register for errors. */ - return 0; + return status == 0x80; +} + +/* Some ST M50* chips do support erasing of sectors. This function will derive the erase function to use from + * the length of the of the block. For calls that apparently do not address a sector (but a block) we just call + * the block erase function instead. FIXME: This duplicates the behavior of the remaining erasers for blocks and + * might be fixed when flashrom supports multiple functions per eraser or erasers that do erase parts of the + * chip only. */ +int erase_sector_stm50(struct flashctx *flash, unsigned int addr, unsigned int len) +{ + if (len == 4096) + return stm50_erase_sector(flash, addr); + else + return erase_block_82802ab(flash, addr, len); } |