#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
+#ifndef CONFIG_MAX_MEM_MAPPED
+#if defined(CONFIG_4xx) || defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
+#define CONFIG_MAX_MEM_MAPPED ((phys_size_t)2 << 30)
+#else
+#define CONFIG_MAX_MEM_MAPPED (256 << 20)
+#endif
+#endif
+
#endif