efi: Relocate FDT to 127MB instead of 128MB

Sandbox only has 128MB of memory so we cannot relocate the device tree up
to start at 128MB. Use 127MB instead, which should be safe.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

cmd/bootefi.c

@@ -158,8 +158,8 @@ static void *copy_fdt(void *fdt)
 	fdt_size = ALIGN(fdt_size + EFI_PAGE_SIZE - 1, EFI_PAGE_SIZE);
 	fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
 
-	/* Safe fdt location is at 128MB */
-	new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
+	/* Safe fdt location is at 127MB */
+	new_fdt_addr = fdt_ram_start + (127 * 1024 * 1024) + fdt_size;
 	if (efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
 			       EFI_RUNTIME_SERVICES_DATA, fdt_pages,
 			       &new_fdt_addr) != EFI_SUCCESS) {