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/*
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _BIOS_H_
#define _BIOS_H_
#define OFFS_ES 0 /* 16bit */
#define OFFS_GS 2 /* 16bit */
#define OFFS_DS 4 /* 16bit */
#define OFFS_EDI 6 /* 32bit */
#define OFFS_DI 6 /* low 16 bits of EDI */
#define OFFS_ESI 10 /* 32bit */
#define OFFS_SI 10 /* low 16 bits of ESI */
#define OFFS_EBP 14 /* 32bit */
#define OFFS_BP 14 /* low 16 bits of EBP */
#define OFFS_ESP 18 /* 32bit */
#define OFFS_SP 18 /* low 16 bits of ESP */
#define OFFS_EBX 22 /* 32bit */
#define OFFS_BX 22 /* low 16 bits of EBX */
#define OFFS_BL 22 /* low 8 bits of BX */
#define OFFS_BH 23 /* high 8 bits of BX */
#define OFFS_EDX 26 /* 32bit */
#define OFFS_DX 26 /* low 16 bits of EBX */
#define OFFS_DL 26 /* low 8 bits of BX */
#define OFFS_DH 27 /* high 8 bits of BX */
#define OFFS_ECX 30 /* 32bit */
#define OFFS_CX 30 /* low 16 bits of EBX */
#define OFFS_CL 30 /* low 8 bits of BX */
#define OFFS_CH 31 /* high 8 bits of BX */
#define OFFS_EAX 34 /* 32bit */
#define OFFS_AX 34 /* low 16 bits of EBX */
#define OFFS_AL 34 /* low 8 bits of BX */
#define OFFS_AH 35 /* high 8 bits of BX */
#define OFFS_VECTOR 38 /* 16bit */
#define OFFS_IP 40 /* 16bit */
#define OFFS_CS 42 /* 16bit */
#define OFFS_FLAGS 44 /* 16bit */
/* stack at 0x40:0x800 -> 0x800 */
#define SEGMENT 0x40
#define STACK 0x800
/*
* save general registers
* save some segments
* save callers stack segment
* setup BIOS segments
* setup BIOS stackpointer
*/
#define MAKE_BIOS_STACK \
pushal; \
pushw %ds; \
pushw %gs; \
pushw %es; \
pushw %ss; \
popw %gs; \
movw $SEGMENT, %ax; \
movw %ax, %ds; \
movw %ax, %es; \
movw %ax, %ss; \
movw %sp, %bp; \
movw $STACK, %sp
/*
* restore callers stack segment
* restore some segments
* restore general registers
*/
#define RESTORE_CALLERS_STACK \
pushw %gs; \
popw %ss; \
movw %bp, %sp; \
popw %es; \
popw %gs; \
popw %ds; \
popal
#ifndef __ASSEMBLY__
#define BIOS_DATA ((char *)0x400)
#define BIOS_DATA_SIZE 256
#define BIOS_BASE ((char *)0xf0000)
#define BIOS_CS 0xf000
extern ulong __bios_start;
extern ulong __bios_size;
/* these are defined in a 16bit segment and needs
* to be accessed with the RELOC_16_xxxx() macros below
*/
extern u16 ram_in_64kb_chunks;
extern u16 bios_equipment;
extern u8 pci_last_bus;
extern void *rm_int00;
extern void *rm_int01;
extern void *rm_int02;
extern void *rm_int03;
extern void *rm_int04;
extern void *rm_int05;
extern void *rm_int06;
extern void *rm_int07;
extern void *rm_int08;
extern void *rm_int09;
extern void *rm_int0a;
extern void *rm_int0b;
extern void *rm_int0c;
extern void *rm_int0d;
extern void *rm_int0e;
extern void *rm_int0f;
extern void *rm_int10;
extern void *rm_int11;
extern void *rm_int12;
extern void *rm_int13;
extern void *rm_int14;
extern void *rm_int15;
extern void *rm_int16;
extern void *rm_int17;
extern void *rm_int18;
extern void *rm_int19;
extern void *rm_int1a;
extern void *rm_int1b;
extern void *rm_int1c;
extern void *rm_int1d;
extern void *rm_int1e;
extern void *rm_int1f;
extern void *rm_def_int;
#define RELOC_16_LONG(seg, off) (*(u32 *)(seg << 4 | (u32)&off))
#define RELOC_16_WORD(seg, off) (*(u16 *)(seg << 4 | (u32)&off))
#define RELOC_16_BYTE(seg, off) (*(u8 *)(seg << 4 | (u32)&off))
#ifdef PCI_BIOS_DEBUG
extern u32 num_pci_bios_present;
extern u32 num_pci_bios_find_device;
extern u32 num_pci_bios_find_class;
extern u32 num_pci_bios_generate_special_cycle;
extern u32 num_pci_bios_read_cfg_byte;
extern u32 num_pci_bios_read_cfg_word;
extern u32 num_pci_bios_read_cfg_dword;
extern u32 num_pci_bios_write_cfg_byte;
extern u32 num_pci_bios_write_cfg_word;
extern u32 num_pci_bios_write_cfg_dword;
extern u32 num_pci_bios_get_irq_routing;
extern u32 num_pci_bios_set_irq;
extern u32 num_pci_bios_unknown_function;
#endif
#endif
#endif
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