cf1d454983
Add FSP2.0 support. This series of patch is to support FSP2.0 specification at https://firmware.intel.com/sites/default/files/FSP_EAS_v2.0_Draft%20External.pdf Some major updates include: 1) One FSP binary is separated to multiple components: FSP-T, FSP-M, FSP-S, and optional FSP-O. Each component has its own configuration data region. 2) All FSP-APIs use same UPD format - FSP_UPD_HEADER. 3) Add EnumInitPhaseEndOfFirmware notifyphase. 4) FSP1.1/FSP1.0 compatibility is NOT maintained. 5) We also add rename Fsp* to FspWrapper* in IntelFsp2WrapperPkg, to indicate that it is for FspWrapper only. IntelFspPkg and IntelFspWrapperPkg will be deprecated. The new Intel platform will follow FSP2.0 and use IntelFsp2Pkg and IntelFsp2WrapperPkg. The old platform can still use IntelFspPkg and IntelFspWrapperPkg for compatibility consideration. Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com> Cc: Maurice Ma <maurice.ma@intel.com> Cc: Ravi P Rangarajan <ravi.p.rangarajan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> Reviewed-by: Ravi P Rangarajan <ravi.p.rangarajan@intel.com>
132 lines
3.5 KiB
NASM
132 lines
3.5 KiB
NASM
;; @file
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; This is the code that goes from real-mode to protected mode.
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; It consumes the reset vector, configures the stack.
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;
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; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;;
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;
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; Define assembler characteristics
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;
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.586p
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.xmm
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.model flat, c
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EXTRN TempRamInitApi:NEAR
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.code
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RET_ESI MACRO
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movd esi, mm7 ; restore ESP from MM7
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jmp esi
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ENDM
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;
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; Perform early platform initialization
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;
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SecPlatformInit PROC NEAR PUBLIC
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RET_ESI
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SecPlatformInit ENDP
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;
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; Protected mode portion initializes stack, configures cache, and calls C entry point
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;
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;----------------------------------------------------------------------------
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;
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; Procedure: ProtectedModeEntryPoint
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;
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; Input: Executing in 32 Bit Protected (flat) mode
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; cs: 0-4GB
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; ds: 0-4GB
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; es: 0-4GB
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; fs: 0-4GB
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; gs: 0-4GB
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; ss: 0-4GB
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;
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; Output: This function never returns
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;
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; Destroys:
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; ecx
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; edi
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; esi
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; esp
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;
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; Description:
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; Perform any essential early platform initilaisation
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; Setup a stack
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;
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;----------------------------------------------------------------------------
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ProtectedModeEntryPoint PROC NEAR C PUBLIC
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;
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; Dummy function. Consume 2 API to make sure they can be linked.
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;
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mov eax, TempRamInitApi
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; Should never return
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jmp $
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ProtectedModeEntryPoint ENDP
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;
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; ROM-based Global-Descriptor Table for the PEI Phase
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;
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align 16
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PUBLIC BootGdtTable
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;
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; GDT[0]: 0x00: Null entry, never used.
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;
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NULL_SEL equ $ - GDT_BASE ; Selector [0]
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GDT_BASE:
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BootGdtTable DD 0
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DD 0
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;
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; Linear code segment descriptor
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;
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LINEAR_CODE_SEL equ $ - GDT_BASE ; Selector [0x8]
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DW 0FFFFh ; limit 0xFFFF
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DW 0 ; base 0
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DB 0
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DB 09Bh ; present, ring 0, data, expand-up, not-writable
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DB 0CFh ; page-granular, 32-bit
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DB 0
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;
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; System data segment descriptor
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;
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SYS_DATA_SEL equ $ - GDT_BASE ; Selector [0x10]
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DW 0FFFFh ; limit 0xFFFF
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DW 0 ; base 0
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DB 0
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DB 093h ; present, ring 0, data, expand-up, not-writable
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DB 0CFh ; page-granular, 32-bit
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DB 0
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GDT_SIZE EQU $ - BootGDTtable ; Size, in bytes
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;
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; GDT Descriptor
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;
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GdtDesc: ; GDT descriptor
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DW GDT_SIZE - 1 ; GDT limit
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DD OFFSET BootGdtTable ; GDT base address
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ProtectedModeEntryLinearAddress LABEL FWORD
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ProtectedModeEntryLinearOffset LABEL DWORD
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DD OFFSET ProtectedModeEntryPoint ; Offset of our 32 bit code
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DW LINEAR_CODE_SEL
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END
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