efi_loader: move efi_save_gd() call to board_r.c

The first functions of the UEFI sub-system are invoked before reaching the
U-Boot shell, e.g. efi_set_bootdev(), efi_dp_from_name(),
efi_dp_from_file(). We should be able to print out device paths for
debugging purposes here.

When printing device paths via printf("%pD\n", dp) this invokes functions
defined as EFIAPI. So efi_save_gd() must be called beforehand.

So let's move the efi_save_gd() call to function initr_reloc_global_data(()
in board_r.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

common/board_r.c

@@ -154,6 +154,13 @@ static int initr_reloc_global_data(void)
 	gd->fdt_blob += gd->reloc_off;
 #endif
 #ifdef CONFIG_EFI_LOADER
+	/*
+	 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
+	 * As this register may be overwritten by an EFI payload we save it here
+	 * and restore it on every callback entered.
+	 */
+	efi_save_gd();
+
 	efi_runtime_relocate(gd->relocaddr, NULL);
 #endif
 

lib/efi_driver/efi_uclass.c

@@ -300,9 +300,6 @@ efi_status_t efi_driver_init(void)
 	struct driver *drv;
 	efi_status_t ret = EFI_SUCCESS;
 
-	/* Save 'gd' pointer */
-	efi_save_gd();
-
 	debug("EFI: Initializing EFI driver framework\n");
 	for (drv = ll_entry_start(struct driver, driver);
 	     drv < ll_entry_end(struct driver, driver); ++drv) {

lib/efi_loader/efi_setup.c

@@ -20,13 +20,6 @@ efi_status_t efi_init_obj_list(void)
 {
 	efi_status_t ret = EFI_SUCCESS;
 
-	/*
-	 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
-	 * As this register may be overwritten by an EFI payload we save it here
-	 * and restore it on every callback entered.
-	 */
-	efi_save_gd();
-
 	/*
 	 * Variable PlatformLang defines the language that the machine has been
 	 * configured for.