mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
173 lines
4.6 KiB
C
173 lines
4.6 KiB
C
/*
|
|
* (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;
|
|
|
|
extern void *realmode_reset;
|
|
extern void *realmode_pci_bios_call_entry;
|
|
|
|
#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
|