refactor(sgi): rewrite address space size definitions
The value of the macro CSS_SGI_REMOTE_CHIP_MEM_OFFSET can be different
across all the Neoverse reference design platforms. This value depends
on the number of address bits used per chip. So let all platforms define
CSS_SGI_ADDR_BITS_PER_CHIP which specifies the number of address bits
used per chip.
In addition to this, reuse the definition of CSS_SGI_ADDR_BITS_PER_CHIP
for single chip platforms and CSS_SGI_REMOTE_CHIP_MEM_OFFSET for multi-
chip platforms to determine the maximum address space size. Also,
increase the RD-N2 multi-chip address space per chip from 4TB to 64TB.
Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
Change-Id: If5e69ec26c2389304c71911729d4addbdf8b2686
diff --git a/plat/arm/board/rde1edge/include/platform_def.h b/plat/arm/board/rde1edge/include/platform_def.h
index a9b30a4..69bfd7b 100644
--- a/plat/arm/board/rde1edge/include/platform_def.h
+++ b/plat/arm/board/rde1edge/include/platform_def.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2021, Arm Limited. All rights reserved.
+ * Copyright (c) 2018-2022, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -26,12 +26,15 @@
#define CSS_SYSTEM_PWR_DMN_LVL ARM_PWR_LVL3
+/* Maximum number of address bits used per chip */
+#define CSS_SGI_ADDR_BITS_PER_CHIP U(36)
+
/*
* Physical and virtual address space limits for MMU in AARCH64 & AARCH32 modes
*/
#ifdef __aarch64__
-#define PLAT_PHY_ADDR_SPACE_SIZE (1ULL << 36)
-#define PLAT_VIRT_ADDR_SPACE_SIZE (1ULL << 36)
+#define PLAT_PHY_ADDR_SPACE_SIZE (1ULL << CSS_SGI_ADDR_BITS_PER_CHIP)
+#define PLAT_VIRT_ADDR_SPACE_SIZE (1ULL << CSS_SGI_ADDR_BITS_PER_CHIP)
#else
#define PLAT_PHY_ADDR_SPACE_SIZE (1ULL << 32)
#define PLAT_VIRT_ADDR_SPACE_SIZE (1ULL << 32)