From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sat, 26 Aug 2017 22:51:09 +0000 (+0200)
Subject: efi_loader: allow creating new handles
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=3cc6e3fe9509d2b5eee6a698126acdde4746f0c6;p=u-boot.git

efi_loader: allow creating new handles

In efi_install_protocol_interface support creating
a new handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 9e741c3cf3..c8f39b5b10 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -266,6 +266,23 @@ static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
 	return EFI_EXIT(r);
 }
 
+static efi_status_t efi_create_handle(void **handle)
+{
+	struct efi_object *obj;
+	efi_status_t r;
+
+	r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
+			      sizeof(struct efi_object),
+			      (void **)&obj);
+	if (r != EFI_SUCCESS)
+		return r;
+	memset(obj, 0, sizeof(struct efi_object));
+	obj->handle = obj;
+	list_add_tail(&obj->link, &efi_obj_list);
+	*handle = obj;
+	return r;
+}
+
 /*
  * Our event capabilities are very limited. Only a small limited
  * number of events is allowed to coexist.
@@ -520,8 +537,9 @@ static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
 
 	/* Create new handle if requested. */
 	if (!*handle) {
-		r = EFI_OUT_OF_RESOURCES;
-		goto out;
+		r = efi_create_handle(handle);
+		if (r != EFI_SUCCESS)
+			goto out;
 	}
 	/* Find object. */
 	list_for_each(lhandle, &efi_obj_list) {