diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c
index 5e22ed79b2..3b0b2ecfa4 100644
--- a/hw/sh4/r2d.c
+++ b/hw/sh4/r2d.c
@@ -338,9 +338,9 @@ static void r2d_init(MachineState *machine)
         }
 
         /* initialization which should be done by firmware */
-        boot_params.loader_type = 1;
-        boot_params.initrd_start = INITRD_LOAD_OFFSET;
-        boot_params.initrd_size = initrd_size;
+        boot_params.loader_type = tswap32(1);
+        boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET);
+        boot_params.initrd_size = tswap32(initrd_size);
     }
 
     if (kernel_cmdline) {