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toradex: configblock: initialize MMC before switching partition

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If the module is in serial downloader mode, we do no longer read the
environment from eMMC. Therefor, the eMMC is unitialized when trying
to read the config block. Use mmc_init to initialize the selected
MMC device before using it.

Note: In case the MMC has already been initialized, the mmc_init
detects that and returns immediately.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
This commit is contained in:
Stefan Agner 2019-07-12 12:35:05 +02:00 committed by Stefano Babic
parent 5fdef6c4c5
commit 42a4f18255
1 changed files with 4 additions and 0 deletions
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4
board/toradex/common/tdx-cfg-block.c
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@ -129,6 +129,10 @@ static int tdx_cfg_block_mmc_storage(u8 *config_block, int write)
ret = -ENODEV;
goto out;
}
if (mmc_init(mmc)) {
puts("MMC init failed\n");
return -EINVAL;
}
if (part != mmc_get_blk_desc(mmc)->hwpart) {
if (blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part)) {
puts("MMC partition switch failed\n");