#define KERNEL_LOAD_ADDR        0x20000000
 #define KERNEL_MAX_SIZE         (256 * MiB)
 #define INITRD_LOAD_ADDR        0x60000000
+#define INITRD_MAX_SIZE         (256 * MiB)
 
 static const char *pnv_chip_core_typename(const PnvChip *o)
 {
     if (machine->initrd_filename) {
         pnv->initrd_base = INITRD_LOAD_ADDR;
         pnv->initrd_size = load_image_targphys(machine->initrd_filename,
-                                  pnv->initrd_base, 0x10000000); /* 128MB max */
+                                  pnv->initrd_base, INITRD_MAX_SIZE);
         if (pnv->initrd_size < 0) {
             error_report("Could not load initial ram disk '%s'",
                          machine->initrd_filename);