| /****************************************************************************** |
| * Copyright (c) 2004, 2008 IBM Corporation |
| * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| |
| #ifndef _BIOSEMU_BIOSEMU_H_ |
| #define _BIOSEMU_BIOSEMU_H_ |
| |
| #define MIN_REQUIRED_VMEM_SIZE 0x100000 // 1MB |
| |
| //define default segments for different components |
| #define STACK_SEGMENT 0x1000 //1000:xxxx |
| #define STACK_START_OFFSET 0xfffe |
| |
| #define DATA_SEGMENT 0x2000 |
| #define VBE_SEGMENT 0x3000 |
| |
| #define PMM_CONV_SEGMENT 0x4000 // 4000:xxxx is PMM conventional memory area, extended memory area |
| // will be anything beyound MIN_REQUIRED_MEMORY_SIZE |
| #define PNP_DATA_SEGMENT 0x5000 |
| |
| #define OPTION_ROM_CODE_SEGMENT 0xc000 |
| |
| #define BIOS_DATA_SEGMENT 0xF000 |
| // both EBDA values are _initial_ values, they may (and will be) changed at runtime by option ROMs!! |
| #define INITIAL_EBDA_SEGMENT 0xF600 // segment of the Extended BIOS Data Area |
| #define INITIAL_EBDA_SIZE 0x400 // size of the EBDA (at least 1KB!! since size is stored in KB!) |
| |
| #define PMM_INT_NUM 0xFC // we misuse INT FC for PMM functionality, at the PMM Entry Point |
| // Address, there will only be a call to this INT and a RETF |
| #define PNP_INT_NUM 0xFD |
| |
| /* array of funtion pointers to override generic interrupt handlers |
| * a YABEL caller can add functions to this array before calling YABEL |
| * if a interrupt occurs, YABEL checks wether a function is set in |
| * this array and only runs the generic interrupt handler code, if |
| * the function pointer is NULL */ |
| typedef int (* yabel_handleIntFunc)(void); |
| extern yabel_handleIntFunc yabel_intFuncArray[256]; |
| void mainboard_interrupt_handlers(int, yabel_handleIntFunc); |
| |
| struct device; |
| |
| u32 biosemu(u8 *biosmem, u32 biosmem_size, struct device *dev, unsigned long rom_addr); |
| #endif |
