[edk2-devel] [edk2-staging/RISC-V PATCH v1 14/14]: MdeModulePkg/DxeIplPeim: Abstract platform DXEIPL on RISC-V platform.

[Abner Chang]

Provide DxeIpl platform implementation-specifc library for RISC-V platform. Two libraries are provided in this commit,
  * Defualt library which simply switch stack and transfer
    control to DXE core.
  * Switch stack, privilege mode and then transfer control to
    DXE core through RISC-V opensbi.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Abner Chang <abner.chang at hpe.com>
---
 MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf            |  9 ++++++++-
 MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c | 11 ++++-------
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
index ea79536..b4c35e5 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
@@ -6,7 +6,7 @@
 #  needed to run the DXE Foundation.
 #
 #  Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
-#  Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+#  Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
 #  which accompanies this distribution.  The full text of the license may be found at
@@ -68,6 +68,9 @@
 [Packages.ARM, Packages.AARCH64]
   ArmPkg/ArmPkg.dec
 
+[Packages.RISCV64]
+  RiscVPkg/RiscVPkg.dec
+
 [LibraryClasses]
   PcdLib
   MemoryAllocationLib
@@ -86,6 +89,10 @@
 [LibraryClasses.ARM, LibraryClasses.AARCH64]
   ArmLib
 
+[LibraryClasses.RISCV64]
+  RiscVPlatformDxeIplLib
+  RiscVOpensbiLib
+
 [Ppis]
   gEfiDxeIplPpiGuid                 ## PRODUCES
   gEfiPeiDecompressPpiGuid          ## PRODUCES
diff --git a/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
index 2d5c7b9..934dfa5 100644
--- a/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
+++ b/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
@@ -1,7 +1,7 @@
 /** @file
   RISC-V specific functionality for DxeLoad.
 
-  Copyright (c) 2016, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+  Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
 
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -13,6 +13,7 @@
 **/
 
 #include "DxeIpl.h"
+#include "Library/RiscVPlatformDxeIpl.h"
 
 typedef
 VOID*
@@ -70,10 +71,6 @@ HandOffToDxeCore (
   //
   // Transfer the control to the entry point of DxeCore.
   //
-  SwitchStack (
-    (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,
-    HobList.Raw,
-    NULL,
-    TopOfStack
-    );
+  RiscVPlatformHandOffToDxeCore (BaseOfStack, TopOfStack, DxeCoreEntryPoint, HobList);
 }
+
-- 
2.7.4


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