diff options
Diffstat (limited to 'util/flash_and_burn/jedec.c')
| -rw-r--r-- | util/flash_and_burn/jedec.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/util/flash_and_burn/jedec.c b/util/flash_and_burn/jedec.c index d99e774be7..19a233b81c 100644 --- a/util/flash_and_burn/jedec.c +++ b/util/flash_and_burn/jedec.c @@ -89,6 +89,35 @@ int erase_sector_jedec(volatile unsigned char *bios, unsigned int page) return (0); } +int erase_block_jedec(volatile unsigned char *bios, unsigned int block) +{ + volatile unsigned char *Temp; + + /* Issue the Sector Erase command */ + Temp = bios + 0x5555; /* set up address to be BASE:5555h */ + *Temp = 0xAA; /* write data 0xAA to the address */ + myusec_delay(10); + Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */ + *Temp = 0x55; /* write data 0x55 to the address */ + myusec_delay(10); + Temp = bios + 0x5555; /* set up address to be BASE:5555h */ + *Temp = 0x80; /* write data 0x80 to the address */ + myusec_delay(10); + Temp = bios + 0x5555; /* set up address to be BASE:5555h */ + *Temp = 0xAA; /* write data 0xAA to the address */ + myusec_delay(10); + Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */ + *Temp = 0x55; /* write data 0x55 to the address */ + myusec_delay(10); + Temp = bios + block; /* set up address to be the current sector */ + *Temp = 0x50; /* write data 0x30 to the address */ + myusec_delay(10); + + /* wait for Toggle bit ready */ + toggle_ready_jedec(bios); + + return (0); +} int erase_chip_jedec(struct flashchip *flash) { |