IN EFI_PEI_SERVICES **PeiServices\r
);\r
\r
-EFI_PHYSICAL_ADDRESS\r
-CreateIdentityMappingPageTables (\r
- IN UINT32 NumberOfProcessorPhysicalAddressBits\r
- )\r
-;\r
-\r
-VOID\r
-ActivateLongMode (\r
- IN EFI_PHYSICAL_ADDRESS PageTables,\r
- IN EFI_PHYSICAL_ADDRESS HobStart,\r
- IN EFI_PHYSICAL_ADDRESS Stack,\r
- IN EFI_PHYSICAL_ADDRESS CodeEntryPoint1,\r
- IN EFI_PHYSICAL_ADDRESS CodeEntryPoint2\r
- );\r
-\r
-VOID\r
-LoadGo64Gdt();\r
\r
#endif\r
<Filename>DxeIpl.dxs</Filename>\r
<Filename SupArchList="IA32 X64 EBC">Ia32/ImageRead.c</Filename>\r
<Filename SupArchList="IA32">Ia32/DxeLoadFunc.c</Filename>\r
- <Filename SupArchList="IA32">Ia32/LongMode.asm</Filename>\r
- <Filename ToolChainFamily="GCC" SupArchList="IA32">Ia32/LongMode.S</Filename>\r
<Filename SupArchList="IA32">Ia32/VirtualMemory.c</Filename>\r
<Filename SupArchList="IA32">Ia32/VirtualMemory.h</Filename>\r
<Filename SupArchList="X64 EBC">X64/DxeLoadFunc.c</Filename>\r
--*/\r
\r
#include "DxeIpl.h"\r
+#include "VirtualMemory.h"\r
+\r
+//
+// Global Descriptor Table (GDT)
+//
+GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT gGdtEntries [] = {\r
+/* selector { Global Segment Descriptor } */ \r
+/* 0x00 */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //null descriptor \r
+/* 0x08 */ {0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}, //linear data segment descriptor\r
+/* 0x10 */ {0xffff, 0, 0, 0xf, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}, //linear code segment descriptor\r
+/* 0x18 */ {0xffff, 0, 0, 0x3, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}, //system data segment descriptor\r
+/* 0x20 */ {0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}, //system code segment descriptor\r
+/* 0x28 */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //spare segment descriptor\r
+/* 0x30 */ {0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}, //system data segment descriptor\r
+/* 0x38 */ {0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 1, 0, 1, 0}, //system code segment descriptor\r
+/* 0x40 */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, //spare segment descriptor\r
+};\r
+\r
+//\r
+// IA32 Gdt register\r
+//\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST IA32_DESCRIPTOR gGdt = {\r
+ sizeof (gGdtEntries) - 1,\r
+ (UINTN) gGdtEntries\r
+ };\r
\r
VOID\r
HandOffToDxeCore (\r
EFI_STATUS Status;\r
EFI_PHYSICAL_ADDRESS BaseOfStack;\r
EFI_PHYSICAL_ADDRESS TopOfStack;\r
- EFI_PHYSICAL_ADDRESS PageTables;\r
+ UINTN PageTables;\r
\r
Status = PeiServicesAllocatePages (EfiBootServicesData, EFI_SIZE_TO_PAGES (STACK_SIZE), &BaseOfStack);\r
ASSERT_EFI_ERROR (Status);\r
// X64 Calling Conventions requires that the stack must be aligned to 16 bytes\r
//\r
TopOfStack = (EFI_PHYSICAL_ADDRESS) (UINTN) ALIGN_POINTER (TopOfStack, 16);\r
+\r
//\r
// Load the GDT of Go64. Since the GDT of 32-bit Tiano locates in the BS_DATA\r
// memory, it may be corrupted when copying FV to high-end memory \r
//\r
- LoadGo64Gdt();\r
+ AsmWriteGdtr (&gGdt);\r
//\r
- // Limit to 36 bits of addressing for debug. Should get it from CPU\r
- //\r
- PageTables = CreateIdentityMappingPageTables (36);\r
+ // Create page table and save PageMapLevel4 to CR3\r
//\r
+ PageTables = CreateIdentityMappingPageTables ();\r
+ AsmWriteCr3 (PageTables);\r
+ //\r
// Go to Long Mode. Interrupts will not get turned on until the CPU AP is loaded.\r
// Call x64 drivers passing in single argument, a pointer to the HOBs.\r
- //\r
- ActivateLongMode (\r
- PageTables, \r
- (EFI_PHYSICAL_ADDRESS)(UINTN)(HobList.Raw), \r
- TopOfStack,\r
- 0x00000000,\r
- DxeCoreEntryPoint\r
+ // \r
+ AsmEnablePaging64 (\r
+ SYS_CODE64_SEL,\r
+ DxeCoreEntryPoint,\r
+ (EFI_PHYSICAL_ADDRESS)(UINTN)(HobList.Raw),\r
+ 0,\r
+ TopOfStack\r
);\r
} else {\r
//\r
);\r
} \r
}\r
+\r
+++ /dev/null
-#------------------------------------------------------------------------------
-#*
-#* Copyright (c) 2006, Intel Corporation
-#* All rights reserved. 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.
-#*
-#* LongMode.S
-#*
-#* Abstract:
-#*
-#* Transition from 32-bit protected mode EFI environment into x64
-#* 64-bit bit long mode.
-#*
-#* This file is not fully ported or operational.
-#*
-#------------------------------------------------------------------------------
-
-.686p:
-#.MODEL flat
-
-#
-# Create the exception handler code in IA32 C code
-#
-
-.code:
-.stack:
-.MMX:
-.XMM:
-
-.global _LoadGo64Gdt;
-_LoadGo64Gdt:
- pushl %ebp # C prolog
- pushl %edi
- movl %esp, %ebp
- #
- # Disable interrupts
- #
- cli
- #
- # Reload the selectors
- # Note:
- # Make the Selectors 64-bit ready
- #
- movl gdtr, %edi # Load GDT register
- movw %cs, %ax # Get the selector data from our code image
- mov %ax, %es
-# FIXME MISMATCH: " lgdt FWORD PTR es:[edi] "
-
- .byte 0x67
- .byte 0xea # Far Jump Offset:Selector to reload CS
-# FIXME MISMATCH: " dd OFFSET DataSelectorRld"
-# FIXME MISMATCH: " dw LINEAR_CODE_SEL "
-DataSelectorRld:
- movw SYS_DATA_SEL, %ax # Update the Base for the new selectors, too
- movw %ax, %ds
- movw %ax, %es
- movw %ax, %fs
- movw %ax, %gs
- movw %ax, %ss
-
- popl %edi
- popl %ebp
- ret
-#_LoadGo64Gdt ENDP
-
-
-# VOID
-# ActivateLongMode (
-# IN EFI_PHYSICAL_ADDRESS PageTables,
-# IN EFI_PHYSICAL_ADDRESS HobStart,
-# IN EFI_PHYSICAL_ADDRESS Stack,
-# IN EFI_PHYSICAL_ADDRESS PpisNeededByDxeIplEntryPoint,
-# IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint
-# )
-#
-# Input: [ebp][0h] = Original ebp
-# [ebp][4h] = Return address
-# [ebp][8h] = PageTables
-# [ebp][10h] = HobStart
-# [ebp][18h] = Stack
-# [ebp][20h] = CodeEntryPoint1 <--- Call this first (for each call, pass HOB pointer)
-# [ebp][28h] = CodeEntryPoint2 <--- Call this second
-#
-#
-.global _ActivateLongMode;
-_ActivateLongMode:
- pushl %ebp # C prolog
- movl %esp, %ebp
-
- #
- # Use CPUID to determine if the processor supports long mode.
- #
- movl $0x80000000, %eax # Extended-function code 8000000h.
- cpuid # Is largest extended function
- cmpl $0x80000000, %eax # any function > 80000000h?
- jbe no_long_mode # If not, no long mode.
- movl $0x80000001, %eax # Extended-function code 8000001h.
- cpuid # Now EDX = extended-features flags.
- btl $29, %edx # Test if long mode is supported.
- jnc no_long_mode # Exit if not supported.
-
- #
- # Enable the 64-bit page-translation-table entries by
- # setting CR4.PAE=1 (this is _required_ before activating
- # long mode). Paging is not enabled until after long mode
- # is enabled.
- #
- movl %cr4, %eax
- btsl $5, %eax
- movl %eax, %cr4
-
- #
- # Get the long-mode page tables, and initialize the
- # 64-bit CR3 (page-table base address) to point to the base
- # of the PML4 page table. The PML4 page table must be located
- # below 4 Gbytes because only 32 bits of CR3 are loaded when
- # the processor is not in 64-bit mode.
- #
- movl 0x8(%ebp), %eax # Get Page Tables
- movl %eax, %cr3 # Initialize CR3 with PML4 base.
-
- #
- # Enable long mode (set EFER.LME=1).
- #
- movl $0xc0000080, %ecx # EFER MSR number.
- rdmsr # Read EFER.
- btsl $8, %eax # Set LME=1.
- wrmsr # Write EFER.
-
- #
- # Enable paging to activate long mode (set CR0.PG=1)
- #
-
-
- movl %cr0, %eax # Read CR0.
- btsl $31, %eax # Set PG=1.
- movl %eax, %cr0 # Write CR0.
- jmp go_to_long_mode
-go_to_long_mode:
-
- #
- # This is the next instruction after enabling paging. Jump to long mode
- #
- .byte 0x67
- .byte 0xea # Far Jump Offset:Selector to reload CS
-#FIXME MISMATCH: " dd OFFSET in_long_mode"
-#FIXME MISMATCH: " dw SYS_CODE64_SEL "
-in_long_mode:
- movw SYS_DATA64_SEL, %ax
- movw %ax, %es
- movw %ax, %ss
- movw %ax, %ds
- jmp .
-
-
- #
- # We're in long mode, so marshall the arguments to call the
- # passed in function pointers
- # Recall
- # [ebp][10h] = HobStart
- # [ebp][18h] = Stack
- # [ebp][20h] = PpisNeededByDxeIplEntryPoint <--- Call this first (for each call, pass HOB pointer)
- # [ebp][28h] = DxeCoreEntryPoint <--- Call this second
- #
- .byte 0x48
- movl 0x18(%ebp), %ebx # Setup the stack
- .byte 0x48
- movl %ebx, %esp # On a new stack now
-
-
-## 00000905 FF D0 call rax
-
- .byte 0x48
- movl 0x10(%ebp), %ecx # Pass Hob Start in RCX
- .byte 0x48
- movl 0x28(%ebp), %eax # Get the function pointer for
- # DxeCoreEntryPoint into EAX
-
-## 00000905 FF D0 call rax
- .byte 0xff
- .byte 0xd0
-
- #
- # WE SHOULD NEVER GET HERE!!!!!!!!!!!!!
- #
-no_long_mode:
- jmp no_long_mode
-#_ActivateLongMode ENDP
-
- .align 16
-
-gdtr: #FIXME MISMATCH: "gdtr dw _GDT_END - _GDT_BASE - 1 "
-#FIXME MISMATCH: " dd OFFSET _GDT_BASE "
-
-#-----------------------------------------------------------------------------;
-# global descriptor table (GDT)
-#-----------------------------------------------------------------------------;
-
- .align 16
-
-.global _GDT_BASE
-_GDT_BASE:
-# null descriptor
-.equ NULL_SEL, .-_GDT_BASE # Selector [0]
- .word 0 # limit 15:0
- .word 0 # base 15:0
- .byte 0 # base 23:16
- .byte 0 # type
- .byte 0 # limit 19:16, flags
- .byte 0 # base 31:24
-
-# linear data segment descriptor
-.equ LINEAR_SEL, .-_GDT_BASE # Selector [0x8]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x92 # present, ring 0, data, expand-up, writable
- .byte 0xCF # page-granular, 32-bit
- .byte 0
-
-# linear code segment descriptor
-.equ LINEAR_CODE_SEL, .-_GDT_BASE # Selector [0x10]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x9F # present, ring 0, data, expand-up, writable
- .byte 0xCF # page-granular, 32-bit
- .byte 0
-
-# system data segment descriptor
-.equ SYS_DATA_SEL, .-_GDT_BASE # Selector [0x18]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x93 # present, ring 0, data, expand-up, writable
- .byte 0xCF # page-granular, 32-bit
- .byte 0
-
-# system code segment descriptor
-.equ SYS_CODE_SEL, .-_GDT_BASE # Selector [0x20]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x9A # present, ring 0, data, expand-up, writable
- .byte 0xCF # page-granular, 32-bit
- .byte 0
-
-# spare segment descriptor
-.equ SPARE3_SEL, .-_GDT_BASE # Selector [0x28]
- .word 0 # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0 # present, ring 0, data, expand-up, writable
- .byte 0 # page-granular, 32-bit
- .byte 0
-
-#
-# system data segment descriptor
-#
-.equ SYS_DATA64_SEL, .-_GDT_BASE # Selector [0x30]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x92 # P | DPL [1..2] | 1 | 1 | C | R | A
- .byte 0xCF # G | D | L | AVL | Segment [19..16]
- .byte 0
-
-#
-# system code segment descriptor
-#
-.equ SYS_CODE64_SEL, .-_GDT_BASE # Selector [0x38]
- .word 0xFFFF # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0x9A # P | DPL [1..2] | 1 | 1 | C | R | A
- .byte 0xAF # G | D | L | AVL | Segment [19..16]
- .byte 0
-
-# spare segment descriptor
-.equ SPARE4_SEL, .-_GDT_BASE # Selector [0x40]
- .word 0 # limit 0xFFFFF
- .word 0 # base 0
- .byte 0
- .byte 0 # present, ring 0, data, expand-up, writable
- .byte 0 # page-granular, 32-bit
- .byte 0
-
-_GDT_END:
-
-
-
+++ /dev/null
- TITLE LongMode.asm: Assembly code for the entering long mode
-
-;------------------------------------------------------------------------------
-;*
-;* Copyright (c) 2006, Intel Corporation
-;* All rights reserved. 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.
-;*
-;* LongMode.asm
-;*
-;* Abstract:
-;*
-;* Transition from 32-bit protected mode EFI environment into x64
-;* 64-bit bit long mode.
-;*
-;------------------------------------------------------------------------------
-
-.686p
-.model flat
-
-;
-; Create the exception handler code in IA32 C code
-;
-
-.code
-.stack
-.MMX
-.XMM
-
-_LoadGo64Gdt PROC Near Public
- push ebp ; C prolog
- push edi
- mov ebp, esp
- ;
- ; Disable interrupts
- ;
- cli
- ;
- ; Reload the selectors
- ; Note:
- ; Make the Selectors 64-bit ready
- ;
- mov edi, OFFSET gdtr ; Load GDT register
- mov ax,cs ; Get the selector data from our code image
- mov es,ax
- lgdt FWORD PTR es:[edi] ; and update the GDTR
-
- db 067h
- db 0eah ; Far Jump Offset:Selector to reload CS
- dd OFFSET DataSelectorRld; Offset is ensuing instruction boundary
- dw LINEAR_CODE_SEL ; Selector is our code selector, 10h
-DataSelectorRld::
- mov ax, SYS_DATA_SEL ; Update the Base for the new selectors, too
- mov ds, ax
- mov es, ax
- mov fs, ax
- mov gs, ax
- mov ss, ax
-
- pop edi
- pop ebp
- ret
-_LoadGo64Gdt endp
-
-
-; VOID
-; ActivateLongMode (
-; IN EFI_PHYSICAL_ADDRESS PageTables,
-; IN EFI_PHYSICAL_ADDRESS HobStart,
-; IN EFI_PHYSICAL_ADDRESS Stack,
-; IN EFI_PHYSICAL_ADDRESS PpisNeededByDxeIplEntryPoint,
-; IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint
-; )
-;
-; Input: [ebp][0h] = Original ebp
-; [ebp][4h] = Return address
-; [ebp][8h] = PageTables
-; [ebp][10h] = HobStart
-; [ebp][18h] = Stack
-; [ebp][20h] = CodeEntryPoint1 <--- Call this first (for each call, pass HOB pointer)
-; [ebp][28h] = CodeEntryPoint2 <--- Call this second
-;
-;
-_ActivateLongMode PROC Near Public
- push ebp ; C prolog
- mov ebp, esp
-
- ;
- ; Use CPUID to determine if the processor supports long mode.
- ;
- mov eax, 80000000h ; Extended-function code 8000000h.
- cpuid ; Is largest extended function
- cmp eax, 80000000h ; any function > 80000000h?
- jbe no_long_mode ; If not, no long mode.
- mov eax, 80000001h ; Extended-function code 8000001h.
- cpuid ; Now EDX = extended-features flags.
- bt edx, 29 ; Test if long mode is supported.
- jnc no_long_mode ; Exit if not supported.
-
- ;
- ; Enable the 64-bit page-translation-table entries by
- ; setting CR4.PAE=1 (this is _required_ before activating
- ; long mode). Paging is not enabled until after long mode
- ; is enabled.
- ;
- mov eax, cr4
- bts eax, 5
- mov cr4, eax
-
- ;
- ; Get the long-mode page tables, and initialize the
- ; 64-bit CR3 (page-table base address) to point to the base
- ; of the PML4 page table. The PML4 page table must be located
- ; below 4 Gbytes because only 32 bits of CR3 are loaded when
- ; the processor is not in 64-bit mode.
- ;
- mov eax, [ebp+8h] ; Get Page Tables
- mov cr3, eax ; Initialize CR3 with PML4 base.
-
- ;
- ; Enable long mode (set EFER.LME=1).
- ;
- mov ecx, 0c0000080h ; EFER MSR number.
- rdmsr ; Read EFER.
- bts eax, 8 ; Set LME=1.
- wrmsr ; Write EFER.
-
- ;
- ; Enable paging to activate long mode (set CR0.PG=1)
- ;
-
-
- mov eax, cr0 ; Read CR0.
- bts eax, 31 ; Set PG=1.
- mov cr0, eax ; Write CR0.
- jmp go_to_long_mode
-go_to_long_mode:
-
- ;
- ; This is the next instruction after enabling paging. Jump to long mode
- ;
- db 067h
- db 0eah ; Far Jump Offset:Selector to reload CS
- dd OFFSET in_long_mode; Offset is ensuing instruction boundary
- dw SYS_CODE64_SEL ; Selector is our code selector, 10h
-in_long_mode::
- mov ax, SYS_DATA64_SEL
- mov es, ax
- mov ss, ax
- mov ds, ax
-;; jmp $
-
-
- ;
- ; We're in long mode, so marshall the arguments to call the
- ; passed in function pointers
- ; Recall
- ; [ebp][10h] = HobStart
- ; [ebp][18h] = Stack
- ; [ebp][20h] = PpisNeededByDxeIplEntryPoint <--- Call this first (for each call, pass HOB pointer)
- ; [ebp][28h] = DxeCoreEntryPoint <--- Call this second
- ;
- db 48h
- mov ebx, [ebp+18h] ; Setup the stack
- db 48h
- mov esp, ebx ; On a new stack now
-
-
-;; 00000905 FF D0 call rax
-
- db 48h
- mov ecx, [ebp+10h] ; Pass Hob Start in RCX
- db 48h
- mov eax, [ebp+28h] ; Get the function pointer for
- ; DxeCoreEntryPoint into EAX
-
-;; 00000905 FF D0 call rax
- db 0ffh
- db 0d0h
-
- ;
- ; WE SHOULD NEVER GET HERE!!!!!!!!!!!!!
- ;
-no_long_mode:
- jmp no_long_mode
-_ActivateLongMode endp
-
- align 16
-
-gdtr dw GDT_END - GDT_BASE - 1 ; GDT limit
- dd OFFSET GDT_BASE ; (GDT base gets set above)
-
-;-----------------------------------------------------------------------------;
-; global descriptor table (GDT)
-;-----------------------------------------------------------------------------;
-
- align 16
-
-public GDT_BASE
-GDT_BASE:
-; null descriptor
-NULL_SEL equ $-GDT_BASE ; Selector [0]
- dw 0 ; limit 15:0
- dw 0 ; base 15:0
- db 0 ; base 23:16
- db 0 ; type
- db 0 ; limit 19:16, flags
- db 0 ; base 31:24
-
-; linear data segment descriptor
-LINEAR_SEL equ $-GDT_BASE ; Selector [0x8]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 092h ; present, ring 0, data, expand-up, writable
- db 0CFh ; page-granular, 32-bit
- db 0
-
-; linear code segment descriptor
-LINEAR_CODE_SEL equ $-GDT_BASE ; Selector [0x10]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 09Fh ; present, ring 0, data, expand-up, writable
- db 0CFh ; page-granular, 32-bit
- db 0
-
-; system data segment descriptor
-SYS_DATA_SEL equ $-GDT_BASE ; Selector [0x18]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 093h ; present, ring 0, data, expand-up, writable
- db 0CFh ; page-granular, 32-bit
- db 0
-
-; system code segment descriptor
-SYS_CODE_SEL equ $-GDT_BASE ; Selector [0x20]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 09Ah ; present, ring 0, data, expand-up, writable
- db 0CFh ; page-granular, 32-bit
- db 0
-
-; spare segment descriptor
-SPARE3_SEL equ $-GDT_BASE ; Selector [0x28]
- dw 0 ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 0 ; present, ring 0, data, expand-up, writable
- db 0 ; page-granular, 32-bit
- db 0
-
-;
-; system data segment descriptor
-;
-SYS_DATA64_SEL equ $-GDT_BASE ; Selector [0x30]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 092h ; P | DPL [1..2] | 1 | 1 | C | R | A
- db 0CFh ; G | D | L | AVL | Segment [19..16]
- db 0
-
-;
-; system code segment descriptor
-;
-SYS_CODE64_SEL equ $-GDT_BASE ; Selector [0x38]
- dw 0FFFFh ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 09Ah ; P | DPL [1..2] | 1 | 1 | C | R | A
- db 0AFh ; G | D | L | AVL | Segment [19..16]
- db 0
-
-; spare segment descriptor
-SPARE4_SEL equ $-GDT_BASE ; Selector [0x40]
- dw 0 ; limit 0xFFFFF
- dw 0 ; base 0
- db 0
- db 0 ; present, ring 0, data, expand-up, writable
- db 0 ; page-granular, 32-bit
- db 0
-
-GDT_END:
-
-END
-
\r
#include "VirtualMemory.h"\r
\r
-EFI_PHYSICAL_ADDRESS\r
+UINTN\r
CreateIdentityMappingPageTables (\r
VOID\r
)\r
);\r
}\r
\r
- return (EFI_PHYSICAL_ADDRESS) (UINTN)PageMap; // FIXME\r
+ return (UINTN)PageMap; // FIXME\r
}\r
\r
#define _VIRTUAL_MEMORY_H_\r
\r
\r
+#define SYS_CODE64_SEL 0x38\r
+\r
#pragma pack(1)\r
\r
+typedef union {\r
+ struct {\r
+ UINT32 LimitLow : 16;\r
+ UINT32 BaseLow : 16;\r
+ UINT32 BaseMid : 8;\r
+ UINT32 Type : 4;\r
+ UINT32 System : 1;\r
+ UINT32 Dpl : 2;\r
+ UINT32 Present : 1;\r
+ UINT32 LimitHigh : 4;\r
+ UINT32 Software : 1;\r
+ UINT32 Reserved : 1;\r
+ UINT32 DefaultSize : 1;\r
+ UINT32 Granularity : 1;\r
+ UINT32 BaseHigh : 8;\r
+ } Bits;\r
+ UINT64 Uint64;\r
+} IA32_GDT;\r
+\r
//\r
// Page-Map Level-4 Offset (PML4) and\r
// Page-Directory-Pointer Offset (PDPE) entries 4K & 2MB\r
\r
#pragma pack()\r
\r
-EFI_PHYSICAL_ADDRESS\r
+UINTN\r
CreateIdentityMappingPageTables (\r
VOID\r
)\r
projects / mirror_edk2.git / commitdiff