board: emsk: fix the ddr related definitons

* add ddr fixup in dts_fixup.h
* use DT_DDR_XXX in linker.ld

Signed-off-by: Wayne Ren <[email protected]>

Author: Wayne Ren

soc/arc/snps_emsk/dts_fixup.h

@@ -1,11 +1,14 @@
 /* SoC level DTS fixup file */
 
 /* CCM configuration */
-#define DT_DCCM_BASE_ADDRESS       DT_ARC_DCCM_80000000_BASE_ADDRESS
-#define DT_DCCM_SIZE               (DT_ARC_DCCM_80000000_SIZE >> 10)
+#define DT_DCCM_BASE_ADDRESS		DT_ARC_DCCM_80000000_BASE_ADDRESS
+#define DT_DCCM_SIZE			(DT_ARC_DCCM_80000000_SIZE >> 10)
 
-#define DT_ICCM_BASE_ADDRESS       DT_ARC_ICCM_0_BASE_ADDRESS
-#define DT_ICCM_SIZE               (DT_ARC_ICCM_0_SIZE >> 10)
+#define DT_ICCM_BASE_ADDRESS		DT_ARC_ICCM_0_BASE_ADDRESS
+#define DT_ICCM_SIZE			(DT_ARC_ICCM_0_SIZE >> 10)
+
+#define DT_DDR_BASE_ADDRESS		DT_MMIO_SRAM_10000000_BASE_ADDRESS
+#define DT_DDR_SIZE			(DT_MMIO_SRAM_10000000_SIZE >> 10)
 
 /*
  * UART configuration

soc/arc/snps_emsk/linker.ld

@@ -17,9 +17,9 @@
  * DRAM includes the exception vector table at reset, which is at
  * the beginning of the region.
  */
-#if defined(DT_MMIO_SRAM_0_BASE_ADDRESS) && (DT_MMIO_SRAM_0_SIZE > 0)
-#define SRAM_START		DT_MMIO_SRAM_0_BASE_ADDRESS
-#define SRAM_SIZE		(DT_MMIO_SRAM_0_SIZE >> 10)
+#if defined(DT_DDR_BASE_ADDRESS) && (DT_DDR_SIZE > 0)
+#define SRAM_START		DT_DDR_BASE_ADDRESS
+#define SRAM_SIZE		DT_DDR_SIZE
 #endif
 
 /* Instruction Closely Coupled Memory (ICCM) base address and size */