Add option for defining platform DRAM2 base

The default DRAM2 base address for Arm platforms
is 0x880000000. However, on some platforms the
firmware may want to move the start address to
a different value.

To support this introduce PLAT_ARM_DRAM2_BASE that
defaults to 0x880000000; but can be overridden by
a platform (e.g. in platform_def.h).

Change-Id: I0d81195e06070bc98f376444b48ada2db1666e28
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>

include/plat/arm/board/common/board_css_def.h

 /*
- * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -54,7 +54,7 @@
  * Required platform porting definitions common to all ARM CSS-based
  * development platforms
  */
-
+#define PLAT_ARM_DRAM2_BASE			ULL(0x880000000)
 #define PLAT_ARM_DRAM2_SIZE			ULL(0x180000000)
 
 /* UART related constants */

include/plat/arm/common/arm_def.h

 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -148,7 +148,7 @@
 #define ARM_DRAM1_END			(ARM_DRAM1_BASE +		\
 					 ARM_DRAM1_SIZE - 1)
 
-#define ARM_DRAM2_BASE			UL(0x880000000)
+#define ARM_DRAM2_BASE			PLAT_ARM_DRAM2_BASE
 #define ARM_DRAM2_SIZE			PLAT_ARM_DRAM2_SIZE
 #define ARM_DRAM2_END			(ARM_DRAM2_BASE +		\
 					 ARM_DRAM2_SIZE - 1)

plat/arm/board/fvp/include/platform_def.h

@@ -48,6 +48,7 @@
 /* No SCP in FVP */
 #define PLAT_ARM_SCP_TZC_DRAM1_SIZE	UL(0x0)
 
+#define PLAT_ARM_DRAM2_BASE		ULL(0x880000000)
 #define PLAT_ARM_DRAM2_SIZE		UL(0x80000000)
 
 /*

plat/arm/board/fvp_ve/include/platform_def.h

@@ -25,7 +25,7 @@
 #define ARM_DRAM1_END			(ARM_DRAM1_BASE +		\
 					 ARM_DRAM1_SIZE - 1)
 
-#define ARM_DRAM2_BASE			UL(0x880000000)
+#define ARM_DRAM2_BASE			PLAT_ARM_DRAM2_BASE
 #define ARM_DRAM2_SIZE			PLAT_ARM_DRAM2_SIZE
 #define ARM_DRAM2_END			(ARM_DRAM2_BASE +		\
 					 ARM_DRAM2_SIZE - 1)
@@ -230,6 +230,7 @@
 #define PLAT_ARM_TRUSTED_ROM_BASE	0x00000000
 #define PLAT_ARM_TRUSTED_ROM_SIZE	0x04000000	/* 64 MB */
 
+#define PLAT_ARM_DRAM2_BASE		ULL(0x880000000)
 #define PLAT_ARM_DRAM2_SIZE		ULL(0x80000000)
 
 /*