diff options
| author | Daniel Kochmański | 2015-05-29 16:55:41 +0200 |
|---|---|---|
| committer | Hans de Goede | 2015-07-24 16:17:08 +0200 |
| commit | 645c48f50eab307a9879a82c4d066e74114ec78a (patch) | |
| tree | 6172bf372026f375bab16294b1baeaac74b384be /drivers/mmc | |
| parent | 1b26bab12e85e8b0d382d6775e40d14445249574 (diff) | |
sunxi: Create helper function veryfing valid boot signature on MMC
This patch extracts checking for valid SD card "eGON.BT0" signature from
`board_mmc_init` into function `sunxi_mmc_has_egon_boot_signature`.
Buffer for mmc sector is allocated and freed at runtime. `panic` is
triggered on malloc failure.
Signed-off-by: Daniel Kochmański <dkochmanski@turtle-solutions.eu>
CC: Roy Spliet <r.spliet@ultimaker.com>
Cc: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: Small bugfix to make it work for devs other then mmc0]
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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 e7ab828a8f1..f9b9493c892 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, |