[edk2-devel] [edk2-platforms][PATCH V3 13/17] Silicon/ARM/NeoverseN1Soc: Enable SCP QSPI flash region

["Sahil Kaushal" <sahil.kaushal@arm.com>]

From: sahil <sahil@arm.com>

Enable SCP QSPI flash region access by adding it in the PlatformLibMem.
This flash is shared between AP core and System Control Processor. The
lower addresses are used to store SCP and AP boot images and higher
addresses will be used for variable storage.

Signed-off-by: sahil <sahil@arm.com>
---
 Silicon/ARM/NeoverseN1Soc/Include/NeoverseN1Soc.h              | 7 +++++++
 Silicon/ARM/NeoverseN1Soc/Library/PlatformLib/PlatformLibMem.c | 8 +++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Silicon/ARM/NeoverseN1Soc/Include/NeoverseN1Soc.h b/Silicon/ARM/NeoverseN1Soc/Include/NeoverseN1Soc.h
index 5483e7bc5f68..2dae57a0f01a 100644
--- a/Silicon/ARM/NeoverseN1Soc/Include/NeoverseN1Soc.h
+++ b/Silicon/ARM/NeoverseN1Soc/Include/NeoverseN1Soc.h
@@ -4,6 +4,9 @@
 *
 * SPDX-License-Identifier: BSD-2-Clause-Patent
 *
+* Arm Neoverse N1 System Development Platform Technical Reference Manual
+* https://developer.arm.com/documentation/101489/0000/?lang=en
+*
 **/
 
 #ifndef NEOVERSEN1SOC_PLATFORM_H_
@@ -41,6 +44,10 @@
 #define NEOVERSEN1SOC_EXP_PERIPH_BASE0               0x1C000000
 #define NEOVERSEN1SOC_EXP_PERIPH_BASE0_SZ            0x1300000
 
+// SCP QSPI flash device
+#define NEOVERSEN1SOC_SCP_QSPI_AHB_BASE              0x18000000
+#define NEOVERSEN1SOC_SCP_QSPI_AHB_SZ                0x2000000
+
 /*
  * Platform information structure stored in Non-secure SRAM. Platform
  * information are passed from the trusted firmware with the below structure
diff --git a/Silicon/ARM/NeoverseN1Soc/Library/PlatformLib/PlatformLibMem.c b/Silicon/ARM/NeoverseN1Soc/Library/PlatformLib/PlatformLibMem.c
index 80daedb33416..282bfbc81736 100644
--- a/Silicon/ARM/NeoverseN1Soc/Library/PlatformLib/PlatformLibMem.c
+++ b/Silicon/ARM/NeoverseN1Soc/Library/PlatformLib/PlatformLibMem.c
@@ -14,7 +14,7 @@
 #include <NeoverseN1Soc.h>
 
 // The total number of descriptors, including the final "end-of-table" descriptor.
-#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 19
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 20
 
 /**
   Returns the Virtual Memory Map of the platform.
@@ -203,6 +203,12 @@ ArmPlatformGetVirtualMemoryMap (
   VirtualMemoryTable[Index].Length          = NEOVERSEN1SOC_EXP_PERIPH_BASE0_SZ;
   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 
+  // SCP QSPI flash device
+  VirtualMemoryTable[++Index].PhysicalBase  = NEOVERSEN1SOC_SCP_QSPI_AHB_BASE;
+  VirtualMemoryTable[Index].VirtualBase     = NEOVERSEN1SOC_SCP_QSPI_AHB_BASE;
+  VirtualMemoryTable[Index].Length          = NEOVERSEN1SOC_SCP_QSPI_AHB_SZ;
+  VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
   if (PlatInfo->MultichipMode == 1) {
     //Remote DDR (2GB)
     VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdExtMemorySpace) +
-- 
2.25.1



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