1 /****************************************************************************** 2 * Copyright (c) 2004, 2008 IBM Corporation 3 * Copyright (c) 2009 Pattrick Hueper <[email protected]> 4 * 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are 9 * met: 10 * 11 * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer 16 * in the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Contributors: 32 * IBM Corporation - initial implementation 33 *****************************************************************************/ 34 35 #ifndef _BIOSEMU_BIOSEMU_H_ 36 #define _BIOSEMU_BIOSEMU_H_ 37 38 #define MIN_REQUIRED_VMEM_SIZE 0x100000 // 1MB 39 40 //define default segments for different components 41 #define STACK_SEGMENT 0x1000 //1000:xxxx 42 #define STACK_START_OFFSET 0xfffe 43 44 #define DATA_SEGMENT 0x2000 45 #define VBE_SEGMENT 0x3000 46 47 #define PMM_CONV_SEGMENT 0x4000 // 4000:xxxx is PMM conventional memory area, extended memory area 48 // will be anything beyond MIN_REQUIRED_MEMORY_SIZE 49 #define PNP_DATA_SEGMENT 0x5000 50 51 #define OPTION_ROM_CODE_SEGMENT 0xc000 52 53 #define BIOS_DATA_SEGMENT 0xF000 54 // both EBDA values are _initial_ values, they may (and will be) changed at runtime by option ROMs!! 55 #define INITIAL_EBDA_SEGMENT 0xF600 // segment of the Extended BIOS Data Area 56 #define INITIAL_EBDA_SIZE 0x400 // size of the EBDA (at least 1KB!! since size is stored in KB!) 57 58 #define PMM_INT_NUM 0xFC // we misuse INT FC for PMM functionality, at the PMM Entry Point 59 // Address, there will only be a call to this INT and a RETF 60 #define PNP_INT_NUM 0xFD 61 62 /* array of function pointers to override generic interrupt handlers 63 * a YABEL caller can add functions to this array before calling YABEL 64 * if a interrupt occurs, YABEL checks whether a function is set in 65 * this array and only runs the generic interrupt handler code, if 66 * the function pointer is NULL */ 67 typedef int (* yabel_handleIntFunc)(void); 68 extern yabel_handleIntFunc yabel_intFuncArray[256]; 69 void mainboard_interrupt_handlers(int, yabel_handleIntFunc); 70 71 struct device; 72 73 u32 biosemu(u8 *biosmem, u32 biosmem_size, struct device *dev, unsigned long rom_addr); 74 #endif 75