[PATCH 17/27] efi: Add a bootdev for EFI media
Simon Glass
sjg at chromium.org
Wed May 28 10:24:43 CEST 2025
Bootstd needs a driver so that it can scan EFI media within the EFI app.
Add one.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
drivers/block/efi_blk.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/block/efi_blk.c b/drivers/block/efi_blk.c
index 9766cd6f832..6d67bff32bc 100644
--- a/drivers/block/efi_blk.c
+++ b/drivers/block/efi_blk.c
@@ -9,6 +9,7 @@
*/
#include <blk.h>
+#include <bootdev.h>
#include <dm.h>
#include <efi.h>
#include <efi_api.h>
@@ -79,6 +80,31 @@ static const struct blk_ops efi_blk_ops = {
.write = efi_bl_write,
};
+static int efi_bootdev_bind(struct udevice *dev)
+{
+ struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
+
+ ucp->prio = BOOTDEVP_3_INTERNAL_SLOW;
+
+ return 0;
+}
+
+struct bootdev_ops efi_bootdev_ops = {
+};
+
+static const struct udevice_id efi_bootdev_ids[] = {
+ { .compatible = "u-boot,bootdev-efi" },
+ { }
+};
+
+U_BOOT_DRIVER(efi_bootdev) = {
+ .name = "efi_bootdev",
+ .id = UCLASS_BOOTDEV,
+ .ops = &efi_bootdev_ops,
+ .bind = efi_bootdev_bind,
+ .of_match = efi_bootdev_ids,
+};
+
U_BOOT_DRIVER(efi_block) = {
.name = "efi_block",
.id = UCLASS_BLK,
@@ -103,6 +129,10 @@ static int efi_media_bind(struct udevice *dev)
blk_plat = dev_get_plat(blk);
blk_plat->blkio = plat->blkio;
+ ret = bootdev_setup_for_sibling_blk(blk, "efi_bootdev");
+ if (ret)
+ return log_msg_ret("emb", ret);
+
return 0;
}
--
2.43.0
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