diff options
Diffstat (limited to '82802ab.c')
| -rw-r--r-- | 82802ab.c | 27 |
1 files changed, 18 insertions, 9 deletions
@@ -32,7 +32,7 @@ #include "chipdrivers.h" // I need that Berkeley bit-map printer -void print_82802ab_status(uint8_t status) +void print_status_82802ab(uint8_t status) { printf_debug("%s", status & 0x80 ? "Ready:" : "Busy:"); printf_debug("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:"); @@ -92,18 +92,27 @@ uint8_t wait_82802ab(chipaddr bios) return status; } -int erase_82802ab_block(struct flashchip *flash, unsigned int page, unsigned int pagesize) +int unlock_82802ab(struct flashchip *flash) +{ + int i; + //chipaddr wrprotect = flash->virtual_registers + page + 2; + + for (i = 0; i < flash->total_size; i+= flash->page_size) + { + chip_writeb(0, flash->virtual_registers + i + 2); + } + + return 0; +} + +int erase_block_82802ab(struct flashchip *flash, unsigned int page, unsigned int pagesize) { chipaddr bios = flash->virtual_memory; - chipaddr wrprotect = flash->virtual_registers + page + 2; uint8_t status; // clear status register chip_writeb(0x50, bios + page); - // clear write protect - chip_writeb(0, wrprotect); - // now start it chip_writeb(0x20, bios + page); chip_writeb(0xd0, bios + page); @@ -111,7 +120,7 @@ int erase_82802ab_block(struct flashchip *flash, unsigned int page, unsigned int // now let's see what the register is status = wait_82802ab(bios); - print_82802ab_status(status); + print_status_82802ab(status); if (check_erased_range(flash, page, pagesize)) { fprintf(stderr, "ERASE FAILED!\n"); @@ -130,7 +139,7 @@ int erase_82802ab(struct flashchip *flash) printf("total_size is %d; flash->page_size is %d\n", total_size, flash->page_size); for (i = 0; i < total_size; i += flash->page_size) - if (erase_82802ab_block(flash, i, flash->page_size)) { + if (erase_block_82802ab(flash, i, flash->page_size)) { fprintf(stderr, "ERASE FAILED!\n"); return -1; } @@ -184,7 +193,7 @@ int write_82802ab(struct flashchip *flash, uint8_t *buf) } /* erase block by block and write block by block; this is the most secure way */ - if (erase_82802ab_block(flash, i * page_size, page_size)) { + if (erase_block_82802ab(flash, i * page_size, page_size)) { fprintf(stderr, "ERASE FAILED!\n"); return -1; } |
