1 files changed, 86 insertions, 0 deletions
diff --git a/roms/u-boot/lib/efi_loader/efi_root_node.c b/roms/u-boot/lib/efi_loader/efi_root_node.c
new file mode 100644
index 000000000..739c6867f
--- /dev/null
+++ b/roms/u-boot/lib/efi_loader/efi_root_node.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Root node for system services
+ *
+ *  Copyright (c) 2018 Heinrich Schuchardt
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <efi_dt_fixup.h>
+#include <efi_loader.h>
+
+const efi_guid_t efi_u_boot_guid = U_BOOT_GUID;
+
+efi_handle_t efi_root = NULL;
+
+struct efi_root_dp {
+	struct efi_device_path_vendor vendor;
+	struct efi_device_path end;
+} __packed;
+
+/**
+ * efi_root_node_register() - create root node
+ *
+ * Create the root node on which we install all protocols that are
+ * not related to a loaded image or a driver.
+ *
+ * Return:	status code
+ */
+efi_status_t efi_root_node_register(void)
+{
+	efi_status_t ret;
+	struct efi_root_dp *dp;
+
+	/* Create device path protocol */
+	dp = calloc(1, sizeof(*dp));
+	if (!dp)
+		return EFI_OUT_OF_RESOURCES;
+
+	/* Fill vendor node */
+	dp->vendor.dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
+	dp->vendor.dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR;
+	dp->vendor.dp.length = sizeof(struct efi_device_path_vendor);
+	dp->vendor.guid = efi_u_boot_guid;
+
+	/* Fill end node */
+	dp->end.type = DEVICE_PATH_TYPE_END;
+	dp->end.sub_type = DEVICE_PATH_SUB_TYPE_END;
+	dp->end.length = sizeof(struct efi_device_path);
+
+	/* Create root node and install protocols */
+	ret = EFI_CALL(efi_install_multiple_protocol_interfaces
+			(&efi_root,
+			 /* Device path protocol */
+			 &efi_guid_device_path, dp,
+#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT)
+			 /* Device path to text protocol */
+			 &efi_guid_device_path_to_text_protocol,
+			 (void *)&efi_device_path_to_text,
+#endif
+#ifdef CONFIG_EFI_DEVICE_PATH_UTIL
+			 /* Device path utilities protocol */
+			 &efi_guid_device_path_utilities_protocol,
+			 (void *)&efi_device_path_utilities,
+#endif
+#ifdef CONFIG_EFI_DT_FIXUP
+			 /* Device-tree fix-up protocol */
+			 &efi_guid_dt_fixup_protocol,
+			 (void *)&efi_dt_fixup_prot,
+#endif
+#if CONFIG_IS_ENABLED(EFI_UNICODE_COLLATION_PROTOCOL2)
+			 &efi_guid_unicode_collation_protocol2,
+			 (void *)&efi_unicode_collation_protocol2,
+#endif
+#if CONFIG_IS_ENABLED(EFI_LOADER_HII)
+			 /* HII string protocol */
+			 &efi_guid_hii_string_protocol,
+			 (void *)&efi_hii_string,
+			 /* HII database protocol */
+			 &efi_guid_hii_database_protocol,
+			 (void *)&efi_hii_database,
+#endif
+			 NULL));
+	efi_root->type = EFI_OBJECT_TYPE_U_BOOT_FIRMWARE;
+	return ret;
+}