bootstd: Add bootflow_iter_check_mmc() helper

Some bootflows might be able to only boot from MMC devices.

Add a helper function these bootflows can use.

Reviewed-by: Igor Opaniuk <[email protected]>
Reviewed-by: Julien Masson <[email protected]>
Reviewed-by: Guillaume La Roque <[email protected]>
Tested-by: Guillaume La Roque <[email protected]>
Signed-off-by: Mattijs Korpershoek <[email protected]>
Reviewed-by: Simon Glass <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/bootflow.h b/include/bootflow.h
index 6affc5e1a4f..4d2fc7b69b5 100644
--- a/include/bootflow.h
+++ b/include/bootflow.h
@@ -409,6 +409,15 @@ void bootflow_remove(struct bootflow *bflow);
 int bootflow_iter_check_blk(const struct bootflow_iter *iter);
 
 /**
+ * bootflow_iter_check_mmc() - Check that a bootflow uses a MMC device
+ *
+ * This checks the bootdev in the bootflow to make sure it uses a mmc device
+ *
+ * Return: 0 if OK, -ENOTSUPP if some other device is used (e.g. ethernet)
+ */
+int bootflow_iter_check_mmc(const struct bootflow_iter *iter);
+
+/**
  * bootflow_iter_check_sf() - Check that a bootflow uses SPI FLASH
  *
  * This checks the bootdev in the bootflow to make sure it uses SPI flash