From: AbnerChang <[email protected]> The implementation of RISC-V DxeIpl.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Abner Chang<[email protected]> --- MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 6 +- MdeModulePkg/Core/DxeIplPeim/Riscv64/DxeLoadFunc.c | 79 ++++++++++++++++++++++ 2 files changed, 84 insertions(+), 1 deletion(-) create mode 100644 MdeModulePkg/Core/DxeIplPeim/Riscv64/DxeLoadFunc.c diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf index 04ad928..13c0852 100644 --- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf +++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf @@ -6,6 +6,7 @@ # needed to run the DXE Foundation. # # Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2016, 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 @@ -29,7 +30,7 @@ # # The following information is for reference only and not required by the build tools. # -# VALID_ARCHITECTURES = IA32 X64 IPF EBC (EBC is for build only) AARCH64 +# VALID_ARCHITECTURES = IA32 X64 IPF EBC (EBC is for build only) AARCH64 RISCV64 # [Sources] @@ -57,6 +58,9 @@ [Sources.ARM, Sources.AARCH64] Arm/DxeLoadFunc.c +[Sources.RISCV64] + Riscv64/DxeLoadFunc.c + [Packages] MdePkg/MdePkg.dec MdeModulePkg/MdeModulePkg.dec diff --git a/MdeModulePkg/Core/DxeIplPeim/Riscv64/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/Riscv64/DxeLoadFunc.c new file mode 100644 index 0000000..6b42e44 --- /dev/null +++ b/MdeModulePkg/Core/DxeIplPeim/Riscv64/DxeLoadFunc.c @@ -0,0 +1,79 @@ +/** @file + RISC-V specific functionality for DxeLoad. + + Copyright (c) 2016, 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 + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +**/ + +#include "DxeIpl.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)); + ASSERT (BaseOfStack != NULL); + + // + // 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); + ASSERT_EFI_ERROR (Status); + + // + // 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 ((EFI_D_INFO, "DXE Core new stack at %x, stack pointer at %x\n", BaseOfStack, TopOfStack)); + + // + // Transfer the control to the entry point of DxeCore. + // + SwitchStack ( + (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint, + HobList.Raw, + NULL, + TopOfStack + ); +} -- 1.9.5.msysgit.0 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
