diff options
Diffstat (limited to 'IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32')
4 files changed, 329 insertions, 0 deletions
diff --git a/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.asm b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.asm new file mode 100644 index 0000000000..9f144fc4ca --- /dev/null +++ b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.asm @@ -0,0 +1,131 @@ +;; @file
+; This is the code that goes from real-mode to protected mode.
+; It consumes the reset vector, configures the stack.
+;
+; Copyright (c) 2015 - 2016, 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
+
+.code
+
+RET_ESI MACRO
+
+ movd esi, mm7 ; restore ESP from MM7
+ jmp esi
+
+ENDM
+
+;
+; Perform early platform initialization
+;
+SecPlatformInit PROC NEAR PUBLIC
+
+ RET_ESI
+
+SecPlatformInit ENDP
+
+;
+; 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
+
+ ; 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
diff --git a/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.s b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.s new file mode 100644 index 0000000000..d46d792477 --- /dev/null +++ b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/Flat32.s @@ -0,0 +1,110 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2015 - 2016, 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.
+#
+# Abstract:
+#
+# This is the code that goes from real-mode to protected mode.
+# It consumes the reset vector, configures the stack.
+#
+#------------------------------------------------------------------------------
+
+
+#
+# Contrary to the name, this file contains 16 bit code as well.
+#
+.text
+
+ASM_GLOBAL ASM_PFX(SecPlatformInit)
+ASM_PFX(SecPlatformInit):
+ movd %mm7, %esi # restore ESP from MM7
+ jmp *%esi
+
+#----------------------------------------------------------------------------
+#
+# 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:
+ #
+ # Dummy function. Consume 2 API to make sure they can be linked.
+ #
+ movl ASM_PFX(TempRamInitApi), %eax
+ #
+ # Should never return
+ #
+ jmp . #'$'
+
+#
+# ROM-based Global-Descriptor Table for the PEI Phase
+#
+.align 16
+#
+# GDT[0]: 000h: Null entry, never used.
+#
+.equ NULL_SEL, . - GDT_BASE # Selector [0]
+GDT_BASE:
+BootGdtTable:
+ .long 0
+ .long 0
+#
+# Linear code segment descriptor
+#
+.equ LINEAR_CODE_SEL, . - GDT_BASE # Selector [08h]
+ .word 0xFFFF # limit 0FFFFh
+ .word 0 # base 0
+ .byte 0
+ .byte 0x9B # present, ring 0, data, expand-up, not-writable
+ .byte 0xCF # page-granular, 32-bit
+ .byte 0
+#
+# System data segment descriptor
+#
+.equ SYS_DATA_SEL, . - GDT_BASE # Selector [010h]
+ .word 0xFFFF # limit 0FFFFh
+ .word 0 # base 0
+ .byte 0
+ .byte 0x93 # present, ring 0, data, expand-up, not-writable
+ .byte 0xCF # page-granular, 32-bit
+ .byte 0
+
+.equ GDT_SIZE, . - BootGdtTable # Size, in bytes
+
+#
+# GDT Descriptor
+#
+GdtDesc: # GDT descriptor
+ .word GDT_SIZE - 1
+ .long BootGdtTable
+
+ProtectedModeEntryLinearAddress:
+ProtectedModeEntryLinearOffset:
+ .long ProtectedModeEntryPoint
+ .word LINEAR_CODE_SEL
diff --git a/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.asm b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.asm new file mode 100644 index 0000000000..31296e0043 --- /dev/null +++ b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.asm @@ -0,0 +1,51 @@ +;; @file
+; SEC CAR function
+;
+; 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
+
+RET_ESI MACRO
+
+ movd esi, mm7 ; move ReturnAddress from MM7 to ESI
+ jmp esi
+
+ENDM
+
+.code
+
+;-----------------------------------------------------------------------------
+;
+; Section: SecCarInit
+;
+; Description: This function initializes the Cache for Data, Stack, and Code
+;
+;-----------------------------------------------------------------------------
+SecCarInit PROC NEAR PUBLIC
+
+ ;
+ ; Set up CAR
+ ;
+
+ xor eax, eax
+
+SecCarInitExit:
+
+ RET_ESI
+
+SecCarInit ENDP
+
+END
diff --git a/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.s b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.s new file mode 100644 index 0000000000..7bd40df36a --- /dev/null +++ b/IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/Ia32/SecCarInit.s @@ -0,0 +1,37 @@ +#------------------------------------------------------------------------------
+#
+# 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.
+#
+# Abstract:
+#
+# SEC CAR function
+#
+#------------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+#
+# Section: SecCarInit
+#
+# Description: This function initializes the Cache for Data, Stack, and Code
+#
+#-----------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(SecCarInit)
+ASM_PFX(SecCarInit):
+
+ #
+ # Set up CAR
+ #
+
+ xor %eax, %eax
+
+SecCarInitExit:
+
+ movd %mm7, %esi #RET_ESI
+ jmp *%esi
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