diff options
Diffstat (limited to 'stm50.c')
| -rw-r--r-- | stm50.c | 55 |
1 files changed, 0 insertions, 55 deletions
@@ -27,63 +27,8 @@ */ #include "flash.h" -#include "flashchips.h" #include "chipdrivers.h" -static int stm50_unlock_address(struct flashctx *flash, int offset) -{ - chipaddr wrprotect = flash->virtual_registers + 2; - static const uint8_t unlock_sector = 0x00; - msg_cdbg("unlocking at 0x%x\n", offset); - chip_writeb(flash, unlock_sector, wrprotect + offset); - if (chip_readb(flash, wrprotect + offset) != unlock_sector) { - msg_cerr("Cannot unlock address 0x%x\n", offset); - return -1; - } - return 0; -} - -/* Chips known to use a non-uniform block and sector layout for locking (as well as for erasing): - * Name Size Address range of lock registers - * M50FLW080A 1MB FFB00002 - FFBFF002 - * M50FLW080B 1MB FFB00002 - FFBFF002 - * M50FW002 256k FFBC0002 - FFBFC002 - * M50LPW116 2MB FFA00002 - FFBFC002 - */ -int unlock_stm50_nonuniform(struct flashctx *flash) -{ - int i; - struct eraseblock *eraseblocks = flash->chip->block_erasers[0].eraseblocks; - unsigned int done = 0; - for (i = 0; i < NUM_ERASEREGIONS && eraseblocks[i].count != 0; i++) { - unsigned int block_size = eraseblocks[i].size; - unsigned int block_count = eraseblocks[i].count; - - int j; - for (j = 0; j < block_count; j++) { - if (stm50_unlock_address(flash, done)) { - msg_cerr("UNLOCK FAILED!\n"); - return -1; - } - done += block_count * block_size; - } - } - return 0; -} - -/* Unlocking for uniform 64 kB blocks starting at offset 2 of the feature registers. */ -int unlock_stm50_uniform(struct flashctx *flash) -{ - int i; - for (i = 0; i < flash->chip->total_size * 1024; i+= 64 * 1024) { - if (stm50_unlock_address(flash, i)) { - msg_cerr("UNLOCK FAILED!\n"); - return -1; - } - } - return 0; -} - static int stm50_erase_sector(struct flashctx *flash, unsigned int addr) { chipaddr bios = flash->virtual_memory + addr; |
