sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Revert "UefiCpuPkg: Has APs in 64 bit long-mode before booting to OS."

Browse Source 
This reverts commit 73ccde8f6d since it
results in a hang of the IA32 processor and needs further clean-up.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=4234
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
This commit is contained in:
Yuanhao Xie
2023-01-09 11:37:21 +08:00
committed by mergify[bot]
parent d8d829b89d
commit cbcf0cd65e
7 changed files with 200 additions and 184 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
UefiCpuPkg/Library/MpInitLib/X64/CreatePageTable.c
View File

@@ -1,75 +0,0 @@
/** @file
Function to create page talbe.
Only create page table for x64, and leave the CreatePageTable empty for Ia32.
Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/CpuPageTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Base.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
/**
Create 1:1 mapping page table in reserved memory to map the specified address range.
@param[in] LinearAddress The start of the linear address range.
@param[in] Length The length of the linear address range.
@return The page table to be created.
**/
UINTN
CreatePageTable (
IN UINTN Address,
IN UINTN Length
)
{
EFI_STATUS Status;
VOID *PageTableBuffer;
UINTN PageTableBufferSize;
UINTN PageTable;
IA32_MAP_ATTRIBUTE MapAttribute;
IA32_MAP_ATTRIBUTE MapMask;
MapAttribute.Uint64 = Address;
MapAttribute.Bits.Present = 1;
MapAttribute.Bits.ReadWrite = 1;
MapMask.Bits.PageTableBaseAddress = 1;
MapMask.Bits.Present = 1;
MapMask.Bits.ReadWrite = 1;
PageTable = 0;
PageTableBufferSize = 0;
Status = PageTableMap (
&PageTable,
Paging4Level,
NULL,
&PageTableBufferSize,
Address,
Length,
&MapAttribute,
&MapMask
);
ASSERT (Status == EFI_BUFFER_TOO_SMALL);
DEBUG ((DEBUG_INFO, "AP Page Table Buffer Size = %x\n", PageTableBufferSize));
PageTableBuffer = AllocateReservedPages (EFI_SIZE_TO_PAGES (PageTableBufferSize));
ASSERT (PageTableBuffer != NULL);
Status = PageTableMap (
&PageTable,
Paging4Level,
PageTableBuffer,
&PageTableBufferSize,
Address,
Length,
&MapAttribute,
&MapMask
);
ASSERT_EFI_ERROR (Status);
return PageTable;
}