diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/sunxi_mmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index e7ab828a8f..f9b9493c89 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -433,6 +433,23 @@ static int sunxi_mmc_getcd(struct mmc *mmc) return !gpio_get_value(cd_pin); } +int sunxi_mmc_has_egon_boot_signature(struct mmc *mmc) +{ + char *buf = malloc(512); + int valid_signature = 0; + + if (buf == NULL) + panic("Failed to allocate memory\n"); + + if (mmc_getcd(mmc) && mmc_init(mmc) == 0 && + mmc->block_dev.block_read(mmc->block_dev.dev, 16, 1, buf) == 1 && + strncmp(&buf[4], "eGON.BT0", 8) == 0) + valid_signature = 1; + + free(buf); + return valid_signature; +} + static const struct mmc_ops sunxi_mmc_ops = { .send_cmd = sunxi_mmc_send_cmd, .set_ios = sunxi_mmc_set_ios, |
