-#define CONFIG_SYS_FLASH_ERASE_TOUT (20*CONFIG_SYS_HZ) /* Timeout for Flash Erase */
-#define CONFIG_SYS_FLASH_WRITE_TOUT (20*CONFIG_SYS_HZ) /* Timeout for Flash Write */
-#define CONFIG_SYS_MAX_FLASH_SECT (256)
+#define CONFIG_SYS_FLASH_ERASE_TOUT (2 * CONFIG_SYS_HZ) /* Erase Timeout */
+#define CONFIG_SYS_FLASH_WRITE_TOUT (2 * CONFIG_SYS_HZ) /* Write Timeout */
+
+/*
+ * Note that CONFIG_SYS_MAX_FLASH_SECT allows for a parameter block
+ * i.e.
+ * the bottom "sector" (bottom boot), or top "sector"
+ * (top boot), is a seperate erase region divided into
+ * 4 (equal) smaller sectors. This, notionally, allows
+ * quicker erase/rewrire of the most frequently changed
+ * area......
+ * CONFIG_SYS_MAX_FLASH_SECT is padded up to a multiple of 4
+ */
+
+#ifdef CONFIG_ARCH_VERSATILE_AB
+#define FLASH_SECTOR_SIZE 0x00020000 /* 128 KB sectors */
+#define CONFIG_ENV_SECT_SIZE (2 * FLASH_SECTOR_SIZE)
+#define CONFIG_SYS_MAX_FLASH_SECT (520)
+#endif
+
+#ifdef CONFIG_ARCH_VERSATILE_PB /* Versatile PB is default */
+#define FLASH_SECTOR_SIZE 0x00040000 /* 256 KB sectors */
+#define CONFIG_ENV_SECT_SIZE FLASH_SECTOR_SIZE
+#define CONFIG_SYS_MAX_FLASH_SECT (260)
+#endif
+
+#define CONFIG_SYS_FLASH_BASE 0x34000000
+#define CONFIG_SYS_MAX_FLASH_BANKS 1
+
+#define CONFIG_SYS_MONITOR_LEN (4 * CONFIG_ENV_SECT_SIZE)
+
+/* The ARM Boot Monitor is shipped in the lowest sector of flash */