Merge tag 'efi-2020-07-rc2-2' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2020-07-rc2-2

This patch contains error corrections and code simplifications for the UEFI
sub-system.

1 files changed, 29 insertions, 0 deletions

diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index fd3df80b0b9..0582e02158f 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -588,3 +588,32 @@ efi_status_t efi_disk_register(void)
 
 	return EFI_SUCCESS;
 }
+
+/**
+ * efi_disk_is_system_part() - check if handle refers to an EFI system partition
+ *
+ * @handle:	handle of partition
+ *
+ * Return:	true if handle refers to an EFI system partition
+ */
+bool efi_disk_is_system_part(efi_handle_t handle)
+{
+	struct efi_handler *handler;
+	struct efi_disk_obj *diskobj;
+	disk_partition_t info;
+	efi_status_t ret;
+	int r;
+
+	/* check if this is a block device */
+	ret = efi_search_protocol(handle, &efi_block_io_guid, &handler);
+	if (ret != EFI_SUCCESS)
+		return false;
+
+	diskobj = container_of(handle, struct efi_disk_obj, header);
+
+	r = part_get_info(diskobj->desc, diskobj->part, &info);
+	if (r)
+		return false;
+
+	return !!(info.bootable & PART_EFI_SYSTEM_PARTITION);
+}