[edk2-devel] [edk2-staging/RISC-V-V2 PATCH v3 20/39] MdeModulePkg/DxeIplPeim : RISC-V platform level DxeIPL
Abner Chang
abner.chang at hpe.com
Mon Oct 28 01:58:58 UTC 2019
Implementation of RISC-V platform level DxeIPL.
Signed-off-by: Abner Chang <abner.chang at hpe.com>
Cc: Dandan Bi <dandan.bi at intel.com>
Cc: Liming Gao <liming.gao at intel.com>
Cc: Leif Lindholm <leif.lindholm at linaro.org>
Cc: Gilbert Chen <gilbert.chen at hpe.com>
---
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 13 +++-
RiscVPkg/Include/Library/RiscVPlatformDxeIpl.h | 41 ++++++++++++
MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c | 76 ++++++++++++++++++++++
3 files changed, 129 insertions(+), 1 deletion(-)
create mode 100644 RiscVPkg/Include/Library/RiscVPlatformDxeIpl.h
create mode 100644 MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
index 98bc17f..5532323 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
@@ -7,6 +7,7 @@
#
# Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
+# Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -25,7 +26,7 @@
#
# The following information is for reference only and not required by the build tools.
#
-# VALID_ARCHITECTURES = IA32 X64 EBC (EBC is for build only) AARCH64
+# VALID_ARCHITECTURES = IA32 X64 EBC (EBC is for build only) AARCH64 RISCV64
#
[Sources]
@@ -49,6 +50,9 @@
[Sources.ARM, Sources.AARCH64]
Arm/DxeLoadFunc.c
+[Sources.RISCV64]
+ RiscV64/DxeLoadFunc.c
+
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
@@ -56,6 +60,9 @@
[Packages.ARM, Packages.AARCH64]
ArmPkg/ArmPkg.dec
+[Packages.RISCV64]
+ RiscVPkg/RiscVPkg.dec
+
[LibraryClasses]
PcdLib
MemoryAllocationLib
@@ -75,6 +82,10 @@
[LibraryClasses.ARM, LibraryClasses.AARCH64]
ArmMmuLib
+[LibraryClasses.RISCV64]
+ RiscVPlatformDxeIplLib
+ RiscVOpensbiLib
+
[Ppis]
gEfiDxeIplPpiGuid ## PRODUCES
gEfiPeiDecompressPpiGuid ## PRODUCES
diff --git a/RiscVPkg/Include/Library/RiscVPlatformDxeIpl.h b/RiscVPkg/Include/Library/RiscVPlatformDxeIpl.h
new file mode 100644
index 0000000..30058f2
--- /dev/null
+++ b/RiscVPkg/Include/Library/RiscVPlatformDxeIpl.h
@@ -0,0 +1,41 @@
+/** @file
+ Header file of RISC-V platform DXE IPL
+
+ Copyright (c) 2019, Hewlett Packard Enterprise Development LP.All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef RISC_V_PLATFORM_DXEIPL_H_
+#define RISC_V_PLATFORM_DXEIPL_H_
+
+typedef struct {
+ VOID *TopOfStack;
+ VOID *BaseOfStack;
+ EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint;
+ EFI_PEI_HOB_POINTERS HobList;
+} OPENSBI_SWITCH_MODE_CONTEXT;
+
+/**
+ RISC-V platform DXE IPL to DXE core handoff process.
+
+ This function performs a CPU architecture specific operations to execute
+ the entry point of DxeCore with the parameters of HobList.
+ It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
+
+ @param BaseOfStack Base address of stack
+ @param TopOfStack Top address of stack
+ @param DxeCoreEntryPoint The entry point of DxeCore.
+ @param HobList The start of HobList passed to DxeCore.
+
+**/
+
+VOID
+RiscVPlatformHandOffToDxeCore (
+ IN VOID *BaseOfStack,
+ IN VOID *TopOfStack,
+ IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,
+ IN EFI_PEI_HOB_POINTERS HobList
+ );
+#endif
+
diff --git a/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
new file mode 100644
index 0000000..48efdd8
--- /dev/null
+++ b/MdeModulePkg/Core/DxeIplPeim/RiscV64/DxeLoadFunc.c
@@ -0,0 +1,76 @@
+/** @file
+ RISC-V specific functionality for DxeLoad.
+
+ Copyright (c) 2016 - 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "DxeIpl.h"
+#include <Library/RiscVPlatformDxeIpl.h>
+
+typedef
+VOID*
+(EFIAPI *DXEENTRYPOINT) (
+ IN VOID *HobStart
+ );
+
+/**
+ Transfers control to DxeCore.
+
+ This function performs a CPU architecture specific operations to execute
+ the entry point of DxeCore with the parameters of HobList.
+ It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
+
+ @param DxeCoreEntryPoint The entry point of DxeCore.
+ @param HobList The start of HobList passed to DxeCore.
+
+**/
+VOID
+HandOffToDxeCore (
+ IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,
+ IN EFI_PEI_HOB_POINTERS HobList
+ )
+{
+ VOID *BaseOfStack;
+ VOID *TopOfStack;
+ EFI_STATUS Status;
+ //
+ //
+ // Allocate 128KB for the Stack
+ //
+ BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));
+ if (BaseOfStack == NULL) {
+ DEBUG((DEBUG_ERROR, "%a: Can't allocate memory for stack.", __FUNCTION__));
+ ASSERT(FALSE);
+ }
+
+ //
+ // Compute the top of the stack we were allocated. Pre-allocate a UINTN
+ // for safety.
+ //
+ TopOfStack = (VOID *)((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
+ TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
+
+ //
+ // End of PEI phase signal
+ //
+ Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);
+ if (EFI_ERROR (Status)) {
+ DEBUG((DEBUG_ERROR, "%a: Fail to signal End of PEI event.", __FUNCTION__));
+ ASSERT(FALSE);
+ }
+ //
+ // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.
+ //
+ UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, STACK_SIZE);
+
+ DEBUG ((DEBUG_INFO, "DXE Core new stack at %x, stack pointer at %x\n", BaseOfStack, TopOfStack));
+
+ //
+ // Transfer the control to the entry point of DxeCore.
+ //
+ RiscVPlatformHandOffToDxeCore (BaseOfStack, TopOfStack, DxeCoreEntryPoint, HobList);
+}
+
--
2.7.4
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