The AAI (Auto Address Increment Programming) command (0xAD) can be found
in SST25VF080B. I am wondering if it is available in every SPI chip. If
yes, the SB600 pragramming would be much faster than doing it one byte
at a time. I tested on my board with SB600. I don't make a patch because
I am not sure I can do that.
Zheng
int sb600_spi_write(struct flashchip *flash, uint8_t *buf)
{
int rc = 0, i;
int total_size = flash->total_size * 1024;
uint8_t cmd[8] = {0xAD, 0x00, 0x00, 0x00};
/* Erase first */
printf("Erasing flash before programming... ");
flash->erase(flash);
printf("done.\n");
cmd[4] = buf[0];
cmd[5] = buf[1];
spi_disable_blockprotect();
spi_write_enable();
sb600_spi_command(6, 0, cmd, 0);
printf("Programming flash");
for (i = 2, buf += 2; i < total_size; i+=2, buf+=2) {
/* spi_byte_program(i, *buf); */
cmd[1] = buf[0];
cmd[2] = buf[1];
sb600_spi_command(3, 0, cmd, 0);
/* wait program complete. */
if (i % 0x8000 == 0)
printf(".");
while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP)
;
}
printf(" done.\n");
spi_write_disable();
return rc;
}
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