DxeLoadFuncFit.c File Reference

#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PcdLib.h>
#include <Library/HobLib.h>
#include <Library/FdtLib.h>
#include "VirtualMemory.h"
#include "UefiPayloadEntry.h"

Go to the source code of this file.

Data Structures
struct	_X64_IDT_TABLE

Macros
#define	STACK_SIZE   0x20000
#define	IDT_ENTRY_COUNT   32

Typedefs
typedef struct _X64_IDT_TABLE	X64_IDT_TABLE

Functions
UINTN	Create4GPageTablesIa32Pae (IN EFI_PHYSICAL_ADDRESS StackBase, IN UINTN StackSize)
BOOLEAN	IsIa32PaeSupport (VOID)
BOOLEAN	ToBuildPageTable (VOID)
VOID	HandOffToDxeCore (IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint, IN EFI_PEI_HOB_POINTERS HobList)
EFI_STATUS EFIAPI	_ModuleEntryPoint (IN UINTN BootloaderParameter)

Variables
VOID *	mHobList
GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT	gGdtEntries []
GLOBAL_REMOVE_IF_UNREFERENCED CONST IA32_DESCRIPTOR	gGdt
GLOBAL_REMOVE_IF_UNREFERENCED IA32_DESCRIPTOR	gLidtDescriptor

Detailed Description

Ia32-specific functionality for DxeLoad.

Copyright (c) 2024, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file DxeLoadFuncFit.c.

Macro Definition Documentation

IDT_ENTRY_COUNT

#define IDT_ENTRY_COUNT   32

Definition at line 21 of file DxeLoadFuncFit.c.

STACK_SIZE

#define STACK_SIZE   0x20000

Definition at line 20 of file DxeLoadFuncFit.c.

Function Documentation

_ModuleEntryPoint()

EFI_STATUS EFIAPI _ModuleEntryPoint

(

IN UINTN

BootloaderParameter

)

Entry point to the C language phase of UEFI payload.

Parameters

[in]

BootloaderParameter

The starting address of bootloader parameter block.

Return values

It	will not return if SUCCESS, and return error when passing bootloader parameter.

Definition at line 400 of file DxeLoadFuncFit.c.

Create4GPageTablesIa32Pae()

UINTN Create4GPageTablesIa32Pae	(	IN EFI_PHYSICAL_ADDRESS	StackBase,
		IN UINTN	StackSize
	)

Allocates and fills in the Page Directory and Page Table Entries to establish a 4G page table.

Parameters

[in]	StackBase	Stack base address.
[in]	StackSize	Stack size.

Returns

The address of page table.

Definition at line 93 of file DxeLoadFuncFit.c.

HandOffToDxeCore()

VOID HandOffToDxeCore	(	IN EFI_PHYSICAL_ADDRESS	DxeCoreEntryPoint,
		IN EFI_PEI_HOB_POINTERS	HobList
	)

Transfers control to DxeCore.

This function performs a CPU architecture specific operations to execute the entry point of DxeCore with the parameters of HobList.

Parameters

DxeCoreEntryPoint	The entry point of DxeCore.
HobList	The start of HobList passed to DxeCore.

Definition at line 257 of file DxeLoadFuncFit.c.

IsIa32PaeSupport()

BOOLEAN IsIa32PaeSupport

(

VOID

)

The function will check if IA32 PAE is supported.

Return values

TRUE	IA32 PAE is supported.
FALSE	IA32 PAE is not supported.

Definition at line 191 of file DxeLoadFuncFit.c.

ToBuildPageTable()

BOOLEAN ToBuildPageTable

(

VOID

)

The function will check if page table should be setup or not.

Return values

TRUE	Page table should be created.
FALSE	Page table should not be created.

Definition at line 219 of file DxeLoadFuncFit.c.

Variable Documentation

gGdt

GLOBAL_REMOVE_IF_UNREFERENCED CONST IA32_DESCRIPTOR gGdt

Initial value:

= {
  sizeof (gGdtEntries) - 1,
  (UINTN)gGdtEntries
}

Definition at line 72 of file DxeLoadFuncFit.c.

gGdtEntries

GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT gGdtEntries[]

Initial value:

= {
  
   {
    { 0,      0, 0, 0,   0, 0, 0, 0,   0, 0, 0, 0, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0xf, 1, 0, 1, 0xf, 0, 0, 1, 1, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0x3, 1, 0, 1, 0xf, 0, 0, 1, 1, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 0, 1, 1, 0 }
  },                                                                      
   {
    { 0,      0, 0, 0,   0, 0, 0, 0,   0, 0, 0, 0, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0 }
  },                                                                      
   {
    { 0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 1, 0, 1, 0 }
  },                                                                      
   {
    { 0,      0, 0, 0,   0, 0, 0, 0,   0, 0, 0, 0, 0 }
  },                                                                      
}

Definition at line 38 of file DxeLoadFuncFit.c.

gLidtDescriptor

GLOBAL_REMOVE_IF_UNREFERENCED IA32_DESCRIPTOR gLidtDescriptor

Initial value:

= {
  sizeof (X64_IDT_GATE_DESCRIPTOR) * IDT_ENTRY_COUNT - 1,
  0
}

Definition at line 77 of file DxeLoadFuncFit.c.

mHobList

VOID* mHobList

extern

Definition at line 25 of file HobLib.c.