diff options
| -rw-r--r-- | flash.h | 5 | ||||
| -rw-r--r-- | flashchips.c | 2 | ||||
| -rw-r--r-- | spi.c | 4 |
3 files changed, 11 insertions, 0 deletions
@@ -167,7 +167,12 @@ extern struct flashchip flashchips[]; #define SST_49LF016C 0x5C #define SST_49LF160C 0x4C +/* + * ST25P chips are SPI, first byte of device ID is memory type, second + * byte of device ID is related to log(bitsize) at least for some chips. + */ #define ST_ID 0x20 /* ST */ +#define ST_M25P80 0x2014 #define ST_M50FLW040A 0x08 #define ST_M50FLW040B 0x28 #define ST_M50FLW080A 0x80 diff --git a/flashchips.c b/flashchips.c index 72d5619..41ae1b1 100644 --- a/flashchips.c +++ b/flashchips.c @@ -140,6 +140,8 @@ struct flashchip flashchips[] = { probe_jedec, erase_chip_jedec, write_jedec}, {"M29F040B", ST_ID, ST_M29F040B, 512, 64 * 1024, probe_29f040b, erase_29f040b, write_29f040b}, + {"M25P80", ST_ID, ST_M25P80, 1024, 64 * 1024, + probe_spi, generic_spi_chip_erase, generic_spi_chip_write}, {"82802ab", 137, 173, 512, 64 * 1024, probe_82802ab, erase_82802ab, write_82802ab}, {"82802ac", 137, 172, 1024, 64 * 1024, @@ -280,7 +280,11 @@ uint8_t generic_spi_read_status_register() int generic_spi_chip_erase(struct flashchip *flash) { const unsigned char cmd[] = JEDEC_CE_2; + uint8_t statusreg; + statusreg = generic_spi_read_status_register(); + printf("chip status register before erase is %02x\n", statusreg); + generic_spi_write_enable(); /* Send CE (Chip Erase) */ generic_spi_command(JEDEC_CE_2_OUTSIZE, JEDEC_CE_2_INSIZE, cmd, NULL); |
