-/* Memory segments (32bit Privileged mode addresses) */
-#ifndef CONFIG_CPU_SH2A
-#define P0SEG 0x00000000
-#define P1SEG 0x80000000
-#define P2SEG 0xa0000000
-#define P3SEG 0xc0000000
-#define P4SEG 0xe0000000
-#else
-#define P0SEG 0x00000000
-#define P1SEG 0x00000000
-#define P2SEG 0x20000000
-#define P3SEG 0x00000000
-#define P4SEG 0x80000000
-#endif
+/* If this CPU supports segmentation, hook up the helpers */
+#ifdef P1SEG
+
+/*
+ [ P0/U0 (virtual) ] 0x00000000 <------ User space
+ [ P1 (fixed) cached ] 0x80000000 <------ Kernel space
+ [ P2 (fixed) non-cachable] 0xA0000000 <------ Physical access
+ [ P3 (virtual) cached] 0xC0000000 <------ vmalloced area
+ [ P4 control ] 0xE0000000
+ */