diff options
Diffstat (limited to 'spi.c')
| -rw-r--r-- | spi.c | 26 |
1 files changed, 26 insertions, 0 deletions
@@ -615,3 +615,29 @@ int spi_chip_write(struct flashchip *flash, uint8_t *buf) return 1; } + +int spi_aai_write(struct flashchip *flash, uint8_t *buf) { + uint32_t pos = 2, size = flash->total_size * 1024; + unsigned char w[6] = {0xad, 0, 0, 0, buf[0], buf[1]}; + switch (flashbus) { + case BUS_TYPE_WBSIO_SPI: + fprintf(stderr, "%s: impossible with Winbond SPI masters, degrading to byte program\n", __func__); + return spi_chip_write(flash, buf); + default: + break; + } + flash->erase(flash); + spi_write_enable(); + spi_command(6, 0, w, NULL); + while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP) + myusec_delay(5); /* SST25VF040B Tbp is max 10us */ + while (pos < size) { + w[1] = buf[pos++]; + w[2] = buf[pos++]; + spi_command(3, 0, w, NULL); + while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP) + myusec_delay(5); /* SST25VF040B Tbp is max 10us */ + } + spi_write_disable(); + return 0; +} |