Update IntelFspPkg to support FSP1.1
-- Add BootLoaderTolumSize support -- Extend FspApiCallingCheck with ApiParam for BootLoaderTolumSize -- Rename all Bootloader to BootLoader as official name -- Rename Ucode to Microcode -- Remove FspSelfCheck API, because it is merged into SecPlatformInit -- Add GetFspVpdDataPointer() in FspCommonLib.h -- Document FspSecPlatformLib.h -- Reorg FSP_PLAT_DATA data structure to let it match FSP spec. -- Move helper function in FspSecCore to reduce platform enabling effort -- Fix LibraryClasses declaration in DEC file. -- Enhance PatchFv to check if it is valid FSP bin. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> Reviewed-by: "Ma, Maurice" <maurice.ma@intel.com> Reviewed-by: "Rangarajan, Ravi P" <ravi.p.rangarajan@intel.com> Reviewed-by: "Mudusuru, Giri P" <giri.p.mudusuru@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17196 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Yao, Jiewen
jyao1
183
IntelFspPkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.asm
Normal file
183
IntelFspPkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.asm
Normal file
@@ -0,0 +1,183 @@
|
||||
;; @file
|
||||
; This is the code that goes from real-mode to protected mode.
|
||||
; It consumes the reset vector, configures the stack.
|
||||
;
|
||||
; Copyright (c) 2015, Intel Corporation. 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.
|
||||
;;
|
||||
|
||||
;
|
||||
; Define assembler characteristics
|
||||
;
|
||||
.586p
|
||||
.xmm
|
||||
.model flat, c
|
||||
|
||||
EXTRN TempRamInitApi:NEAR
|
||||
EXTRN FspInitApi:NEAR
|
||||
|
||||
;
|
||||
; Contrary to the name, this file contains 16 bit code as well.
|
||||
;
|
||||
_TEXT_REALMODE SEGMENT PARA PUBLIC USE16 'CODE'
|
||||
ASSUME CS:_TEXT_REALMODE, DS:_TEXT_REALMODE
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
;
|
||||
; Procedure: _ModuleEntryPoint
|
||||
;
|
||||
; Input: None
|
||||
;
|
||||
; Output: None
|
||||
;
|
||||
; Destroys: Assume all registers
|
||||
;
|
||||
; Description:
|
||||
;
|
||||
; Transition to non-paged flat-model protected mode from a
|
||||
; hard-coded GDT that provides exactly two descriptors.
|
||||
; This is a bare bones transition to protected mode only
|
||||
; used for a while in PEI and possibly DXE.
|
||||
;
|
||||
; After enabling protected mode, a far jump is executed to
|
||||
; transfer to PEI using the newly loaded GDT.
|
||||
;
|
||||
; Return: None
|
||||
;
|
||||
;----------------------------------------------------------------------------
|
||||
align 16
|
||||
_ModuleEntryPoint PROC C PUBLIC
|
||||
;
|
||||
; Load the GDT table in GdtDesc
|
||||
;
|
||||
mov esi, OFFSET GdtDesc
|
||||
db 66h
|
||||
lgdt fword ptr cs:[si]
|
||||
|
||||
;
|
||||
; Transition to 16 bit protected mode
|
||||
;
|
||||
mov eax, cr0 ; Get control register 0
|
||||
or eax, 00000003h ; Set PE bit (bit #0) & MP bit (bit #1)
|
||||
mov cr0, eax ; Activate protected mode
|
||||
|
||||
;
|
||||
; Now we're in 16 bit protected mode
|
||||
; Set up the selectors for 32 bit protected mode entry
|
||||
;
|
||||
mov ax, SYS_DATA_SEL
|
||||
mov ds, ax
|
||||
mov es, ax
|
||||
mov fs, ax
|
||||
mov gs, ax
|
||||
mov ss, ax
|
||||
|
||||
;
|
||||
; Transition to Flat 32 bit protected mode
|
||||
; The jump to a far pointer causes the transition to 32 bit mode
|
||||
;
|
||||
mov esi, offset ProtectedModeEntryLinearAddress
|
||||
jmp fword ptr cs:[si]
|
||||
|
||||
_ModuleEntryPoint ENDP
|
||||
|
||||
_TEXT_REALMODE ENDS
|
||||
|
||||
.code
|
||||
;
|
||||
; Protected mode portion initializes stack, configures cache, and calls C entry point
|
||||
;
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
;
|
||||
; Procedure: ProtectedModeEntryPoint
|
||||
;
|
||||
; Input: Executing in 32 Bit Protected (flat) mode
|
||||
; cs: 0-4GB
|
||||
; ds: 0-4GB
|
||||
; es: 0-4GB
|
||||
; fs: 0-4GB
|
||||
; gs: 0-4GB
|
||||
; ss: 0-4GB
|
||||
;
|
||||
; Output: This function never returns
|
||||
;
|
||||
; Destroys:
|
||||
; ecx
|
||||
; edi
|
||||
; esi
|
||||
; esp
|
||||
;
|
||||
; Description:
|
||||
; Perform any essential early platform initilaisation
|
||||
; Setup a stack
|
||||
;
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
ProtectedModeEntryPoint PROC NEAR C PUBLIC
|
||||
;
|
||||
; Dummy function. Consume 2 API to make sure they can be linked.
|
||||
;
|
||||
mov eax, TempRamInitApi
|
||||
mov eax, FspInitApi
|
||||
|
||||
; Should never return
|
||||
jmp $
|
||||
|
||||
ProtectedModeEntryPoint ENDP
|
||||
|
||||
;
|
||||
; ROM-based Global-Descriptor Table for the PEI Phase
|
||||
;
|
||||
align 16
|
||||
PUBLIC BootGdtTable
|
||||
|
||||
;
|
||||
; GDT[0]: 0x00: Null entry, never used.
|
||||
;
|
||||
NULL_SEL equ $ - GDT_BASE ; Selector [0]
|
||||
GDT_BASE:
|
||||
BootGdtTable DD 0
|
||||
DD 0
|
||||
;
|
||||
; Linear code segment descriptor
|
||||
;
|
||||
LINEAR_CODE_SEL equ $ - GDT_BASE ; Selector [0x8]
|
||||
DW 0FFFFh ; limit 0xFFFF
|
||||
DW 0 ; base 0
|
||||
DB 0
|
||||
DB 09Bh ; present, ring 0, data, expand-up, not-writable
|
||||
DB 0CFh ; page-granular, 32-bit
|
||||
DB 0
|
||||
;
|
||||
; System data segment descriptor
|
||||
;
|
||||
SYS_DATA_SEL equ $ - GDT_BASE ; Selector [0x10]
|
||||
DW 0FFFFh ; limit 0xFFFF
|
||||
DW 0 ; base 0
|
||||
DB 0
|
||||
DB 093h ; present, ring 0, data, expand-up, not-writable
|
||||
DB 0CFh ; page-granular, 32-bit
|
||||
DB 0
|
||||
|
||||
GDT_SIZE EQU $ - BootGDTtable ; Size, in bytes
|
||||
|
||||
;
|
||||
; GDT Descriptor
|
||||
;
|
||||
GdtDesc: ; GDT descriptor
|
||||
DW GDT_SIZE - 1 ; GDT limit
|
||||
DD OFFSET BootGdtTable ; GDT base address
|
||||
|
||||
ProtectedModeEntryLinearAddress LABEL FWORD
|
||||
ProtectedModeEntryLinearOffset LABEL DWORD
|
||||
DD OFFSET ProtectedModeEntryPoint ; Offset of our 32 bit code
|
||||
DW LINEAR_CODE_SEL
|
||||
|
||||
END
|
||||
Reference in New Issue
Block a user