1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2014, Intel Corporation. All rights reserved.<BR> 4; This program and the accompanying materials 5; are licensed and made available under the terms and conditions of the BSD License 6; which accompanies this distribution. The full text of the license may be found at 7; http://opensource.org/licenses/bsd-license.php. 8; 9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11; 12; Module Name: 13; 14; ResetVec.nasmb 15; 16; Abstract: 17; 18; Reset Vector Data structure 19; This structure is located at 0xFFFFFFC0 20; 21;------------------------------------------------------------------------------ 22 23; .stack 0x0 24; SECTION .text 25USE16 26 27; 28; The layout of this file is fixed. The build tool makes assumption of the layout. 29; 30 31 ORG 0h 32; 33; Reserved 34; 35ReservedData: DD 0eeeeeeeeh, 0eeeeeeeeh 36 37 TIMES 0x10-($-$$) DB 0 38; 39; This is located at 0xFFFFFFD0h 40; 41 mov di, "PA" 42 jmp ApStartup 43 44 TIMES 0x20-($-$$) DB 0 45; 46; Pointer to the entry point of the PEI core 47; It is located at 0xFFFFFFE0, and is fixed up by some build tool 48; So if the value 8..1 appears in the final FD image, tool failure occurs. 49; 50PeiCoreEntryPoint: DD 87654321h 51 52; 53; This is the handler for all kinds of exceptions. Since it's for debugging 54; purpose only, nothing except a dead loop would be done here. Developers could 55; analyze the cause of the exception if a debugger had been attached. 56; 57global ASM_PFX(InterruptHandler) 58ASM_PFX(InterruptHandler): 59 jmp $ 60 iret 61 62 TIMES 0x30-($-$$) DB 0 63; 64; For IA32, the reset vector must be at 0xFFFFFFF0, i.e., 4G-16 byte 65; Execution starts here upon power-on/platform-reset. 66; 67ResetHandler: 68 nop 69 nop 70ApStartup: 71 ; 72 ; Jmp Rel16 instruction 73 ; Use machine code directly in case of the assembler optimization 74 ; SEC entry point relative address will be fixed up by some build tool. 75 ; 76 ; Typically, SEC entry point is the function _ModuleEntryPoint() defined in 77 ; SecEntry.asm 78 ; 79 DB 0e9h 80 DW -3 81 82 83 TIMES 0x38-($-$$) DB 0 84; 85; Ap reset vector segment address is at 0xFFFFFFF8 86; This will be fixed up by some build tool, 87; so if the value 1..8 appears in the final FD image, 88; tool failure occurs 89; 90ApSegAddress: dd 12345678h 91 92 TIMES 0x3c-($-$$) DB 0 93; 94; BFV Base is at 0xFFFFFFFC 95; This will be fixed up by some build tool, 96; so if the value 1..8 appears in the final FD image, 97; tool failure occurs. 98; 99BfvBase: DD 12345678h 100 101; 102; Nothing can go here, otherwise the layout of this file would change. 103; 104