cmd: eficonfig: add support for setting fdt
We already support creating a load option where the device-path
field contains the concatenation of the binary device-path and
optionally the device path of the initrd which we expose via the
EFI_LOAD_FILE2_PROTOCOL.
Allow to append another device-path pointing to the device-tree
identified by the device-tree GUID.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c
index 73d0279..348612c 100644
--- a/lib/efi_loader/efi_helper.c
+++ b/lib/efi_loader/efi_helper.c
@@ -99,6 +99,50 @@
return NULL;
}
+/**
+ * efi_load_option_dp_join() - join device-paths for load option
+ *
+ * @dp: in: binary device-path, out: joined device-path
+ * @dp_size: size of joined device-path
+ * @initrd_dp: initrd device-path or NULL
+ * @fdt_dp: device-tree device-path or NULL
+ * Return: status_code
+ */
+efi_status_t efi_load_option_dp_join(struct efi_device_path **dp,
+ size_t *dp_size,
+ struct efi_device_path *initrd_dp,
+ struct efi_device_path *fdt_dp)
+{
+ if (!dp)
+ return EFI_INVALID_PARAMETER;
+
+ *dp_size = efi_dp_size(*dp);
+
+ if (initrd_dp) {
+ struct efi_device_path *tmp_dp = *dp;
+
+ *dp = efi_dp_concat(tmp_dp, initrd_dp, *dp_size);
+ efi_free_pool(tmp_dp);
+ if (!*dp)
+ return EFI_OUT_OF_RESOURCES;
+ *dp_size += efi_dp_size(initrd_dp) + sizeof(END);
+ }
+
+ if (fdt_dp) {
+ struct efi_device_path *tmp_dp = *dp;
+
+ *dp = efi_dp_concat(tmp_dp, fdt_dp, *dp_size);
+ efi_free_pool(tmp_dp);
+ if (!dp)
+ return EFI_OUT_OF_RESOURCES;
+ *dp_size += efi_dp_size(fdt_dp) + sizeof(END);
+ }
+
+ *dp_size += sizeof(END);
+
+ return EFI_SUCCESS;
+}
+
const struct guid_to_hash_map {
efi_guid_t guid;
const char algo[32];