board: emsdp: fix the bug in memory layout

* fix up the rom information
* use ext psram for application

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>

Author: Wayne Ren

board/emsdp/rev1/configs/target_mem_config.h

@@ -74,11 +74,11 @@
 #endif
 
 #ifndef EXT_ROM_START
-#define EXT_ROM_START 	0x10000000
+#define EXT_ROM_START 	0x00000000
 #endif
 
 #ifndef EXT_ROM_SIZE
-#define EXT_ROM_SIZE	0x1000000
+#define EXT_ROM_SIZE	0x40000
 #endif
 
 #ifndef EXT_RAM_START
@@ -133,15 +133,15 @@
  */
 #ifndef REGION_ROM
 #ifdef ARC_FEATURE_ICACHE_PRESENT
-#define REGION_ROM	REGION_EXT_ROM
+#define REGION_ROM	REGION_EXT_RAM
 #else
 #define REGION_ROM	REGION_ICCM
 #endif
 #endif
 
 #ifndef REGION_RAM
 #ifdef ARC_FEATURE_DCACHE_PRESENT
-#define REGION_RAM	REGION_EXT_ROM
+#define REGION_RAM	REGION_EXT_RAM
 #else
 #define REGION_RAM	REGION_DCCM
 #endif

board/emsdp/rev2/configs/target_mem_config.h

@@ -133,15 +133,15 @@
  */
 #ifndef REGION_ROM
 #ifdef ARC_FEATURE_ICACHE_PRESENT
-#define REGION_ROM	REGION_EXT_ROM
+#define REGION_ROM	REGION_EXT_RAM
 #else
 #define REGION_ROM	REGION_ICCM
 #endif
 #endif
 
 #ifndef REGION_RAM
 #ifdef ARC_FEATURE_DCACHE_PRESENT
-#define REGION_RAM	REGION_EXT_ROM
+#define REGION_RAM	REGION_EXT_RAM
 #else
 #define REGION_RAM	REGION_DCCM
 #endif