[edk2-devel] [PATCH RESEND edk2-platforms][PATCH V2 08/14] Platform/ARM: Add HostRegisterBaseAddress variable

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

From: sahil <sahil@arm.com>

This variable holds the QSPI controller's base address.
It is defined in ARM.dec as well with the default value of 0x0.
In case a platform is not using it, they can just ignore this
variable and the default value of 0x0 will be propogated and
the variable will not be used.

Signed-off-by: sahil <sahil@arm.com>
---
 Platform/ARM/ARM.dec                                      |  3 ++
 Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.inf          |  3 ++
 Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.inf |  2 ++
 Platform/ARM/Drivers/NorFlashDxe/NorFlashCommon.h         |  1 +
 Platform/ARM/Include/Library/NorFlashDeviceLib.h          |  1 +
 Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.c            | 34 +++++++++++++++++---
 Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.c   | 12 ++++---
 7 files changed, 48 insertions(+), 8 deletions(-)

diff --git a/Platform/ARM/ARM.dec b/Platform/ARM/ARM.dec
index 86d1fcb4878e..a5e28c372903 100644
--- a/Platform/ARM/ARM.dec
+++ b/Platform/ARM/ARM.dec
@@ -26,3 +26,6 @@
 
 [PcdsFeatureFlag.common]
   gPlatformArmTokenSpaceGuid.PcdNorFlashCheckBlockLocked|FALSE|BOOLEAN|0x0000001
+
+[PcdsFixedAtBuild.common]
+  gPlatformArmTokenSpaceGuid.PcdNorFlashRegBaseAddress|0x0|UINT32|0x00000002
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.inf b/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.inf
index de160025b632..6522968d6c5a 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.inf
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.inf
@@ -65,5 +65,8 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
 
+[FixedPcd]
+  gPlatformArmTokenSpaceGuid.PcdNorFlashRegBaseAddress
+
 [Depex]
   gEfiCpuArchProtocolGuid
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.inf b/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.inf
index d9e7de07165c..eb86d423f106 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.inf
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.inf
@@ -59,5 +59,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
 
+  gPlatformArmTokenSpaceGuid.PcdNorFlashRegBaseAddress
+
 [Depex]
   TRUE
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashCommon.h b/Platform/ARM/Drivers/NorFlashDxe/NorFlashCommon.h
index 7fcb949843e8..98464e4868b1 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashCommon.h
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashCommon.h
@@ -34,6 +34,7 @@
 //
 EFI_STATUS
 NorFlashCreateInstance (
+  IN UINTN                HostRegisterBase,
   IN UINTN                NorFlashDeviceBase,
   IN UINTN                NorFlashRegionBase,
   IN UINTN                NorFlashSize,
diff --git a/Platform/ARM/Include/Library/NorFlashDeviceLib.h b/Platform/ARM/Include/Library/NorFlashDeviceLib.h
index e5017130a091..29b8b8901525 100644
--- a/Platform/ARM/Include/Library/NorFlashDeviceLib.h
+++ b/Platform/ARM/Include/Library/NorFlashDeviceLib.h
@@ -29,6 +29,7 @@ struct _NOR_FLASH_INSTANCE {
   UINT32                                 Signature;
   EFI_HANDLE                             Handle;
 
+  UINTN                                  HostRegisterBaseAddress;
   UINTN                                  DeviceBaseAddress;
   UINTN                                  RegionBaseAddress;
   UINTN                                  Size;
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.c b/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.c
index 1c12572ab663..f5c0dadf84e0 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.c
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashDxe.c
@@ -1,6 +1,6 @@
 /** @file  NorFlashDxe.c
 
-  Copyright (c) 2011 - 2021, Arm Limited. All rights reserved.<BR>
+  Copyright (c) 2011 - 2024, Arm Limited. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -30,6 +30,7 @@ NOR_FLASH_INSTANCE  mNorFlashInstanceTemplate = {
   NOR_FLASH_SIGNATURE, // Signature
   NULL,                // Handle ... NEED TO BE FILLED
 
+  0, // HostRegisterBaseAddress  ... NEED TO BE FILLED
   0, // DeviceBaseAddress ... NEED TO BE FILLED
   0, // RegionBaseAddress ... NEED TO BE FILLED
   0, // Size ... NEED TO BE FILLED
@@ -99,6 +100,7 @@ NOR_FLASH_INSTANCE  mNorFlashInstanceTemplate = {
 
 EFI_STATUS
 NorFlashCreateInstance (
+  IN UINTN                HostRegisterBase,
   IN UINTN                NorFlashDeviceBase,
   IN UINTN                NorFlashRegionBase,
   IN UINTN                NorFlashSize,
@@ -118,9 +120,10 @@ NorFlashCreateInstance (
     return EFI_OUT_OF_RESOURCES;
   }
 
-  Instance->DeviceBaseAddress = NorFlashDeviceBase;
-  Instance->RegionBaseAddress = NorFlashRegionBase;
-  Instance->Size              = NorFlashSize;
+  Instance->HostRegisterBaseAddress = HostRegisterBase;
+  Instance->DeviceBaseAddress       = NorFlashDeviceBase;
+  Instance->RegionBaseAddress       = NorFlashRegionBase;
+  Instance->Size                    = NorFlashSize;
 
   Instance->BlockIoProtocol.Media = &Instance->Media;
   Instance->Media.MediaId         = Index;
@@ -184,6 +187,27 @@ NorFlashInitialise (
   UINT32                 Index;
   NOR_FLASH_DESCRIPTION  *NorFlashDevices;
   BOOLEAN                ContainVariableStorage;
+  EFI_PHYSICAL_ADDRESS   HostRegisterBaseAddress;
+
+  // Register host register region if available
+  HostRegisterBaseAddress = PcdGet32 (PcdNorFlashRegBaseAddress);
+
+  if (HostRegisterBaseAddress != 0) {
+    Status = gDS->AddMemorySpace (
+                    EfiGcdMemoryTypeMemoryMappedIo,
+                    HostRegisterBaseAddress,
+                    SIZE_4KB,
+                    EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
+                    );
+    ASSERT_EFI_ERROR (Status);
+
+    Status = gDS->SetMemorySpaceAttributes (
+                    HostRegisterBaseAddress,
+                    SIZE_4KB,
+                    EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
+                    );
+    ASSERT_EFI_ERROR (Status);
+  }
 
   Status = NorFlashPlatformInitialization ();
   if (EFI_ERROR (Status)) {
@@ -215,6 +239,7 @@ NorFlashInitialise (
     }
 
     Status = NorFlashCreateInstance (
+               HostRegisterBaseAddress,
                NorFlashDevices[Index].DeviceBaseAddress,
                NorFlashDevices[Index].RegionBaseAddress,
                NorFlashDevices[Index].Size,
@@ -368,6 +393,7 @@ NorFlashVirtualNotifyEvent (
   UINTN  Index;
 
   for (Index = 0; Index < mNorFlashDeviceCount; Index++) {
+    EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->HostRegisterBaseAddress);
     EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->DeviceBaseAddress);
     EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->RegionBaseAddress);
 
diff --git a/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.c b/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.c
index 85198b98e8a8..ef9bed37d140 100644
--- a/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.c
+++ b/Platform/ARM/Drivers/NorFlashDxe/NorFlashStandaloneMm.c
@@ -1,6 +1,6 @@
 /** @file  NorFlashStandaloneMm.c
 
-  Copyright (c) 2011 - 2021, Arm Limited. All rights reserved.<BR>
+  Copyright (c) 2011 - 2024, Arm Limited. All rights reserved.<BR>
   Copyright (c) 2020, Linaro, Ltd. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -24,6 +24,7 @@ NOR_FLASH_INSTANCE  mNorFlashInstanceTemplate = {
   NOR_FLASH_SIGNATURE, // Signature
   NULL,                // Handle ... NEED TO BE FILLED
 
+  0, // HostRegisterBaseAddress  ... NEED TO BE FILLED
   0, // DeviceBaseAddress ... NEED TO BE FILLED
   0, // RegionBaseAddress ... NEED TO BE FILLED
   0, // Size ... NEED TO BE FILLED
@@ -93,6 +94,7 @@ NOR_FLASH_INSTANCE  mNorFlashInstanceTemplate = {
 
 EFI_STATUS
 NorFlashCreateInstance (
+  IN UINTN                HostRegisterBase,
   IN UINTN                NorFlashDeviceBase,
   IN UINTN                NorFlashRegionBase,
   IN UINTN                NorFlashSize,
@@ -112,9 +114,10 @@ NorFlashCreateInstance (
     return EFI_OUT_OF_RESOURCES;
   }
 
-  Instance->DeviceBaseAddress = NorFlashDeviceBase;
-  Instance->RegionBaseAddress = NorFlashRegionBase;
-  Instance->Size              = NorFlashSize;
+  Instance->HostRegisterBaseAddress = HostRegisterBase;
+  Instance->DeviceBaseAddress       = NorFlashDeviceBase;
+  Instance->RegionBaseAddress       = NorFlashRegionBase;
+  Instance->Size                    = NorFlashSize;
 
   Instance->BlockIoProtocol.Media = &Instance->Media;
   Instance->Media.MediaId         = Index;
@@ -194,6 +197,7 @@ NorFlashInitialise (
     }
 
     Status = NorFlashCreateInstance (
+               PcdGet32 (PcdNorFlashRegBaseAddress),
                NorFlashDevices[Index].DeviceBaseAddress,
                NorFlashDevices[Index].RegionBaseAddress,
                NorFlashDevices[Index].Size,
-- 
2.25.1



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