mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
94 lines
3 KiB
C
94 lines
3 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 */
|
|
|
|
#define SEGMENT 0x40
|
|
#define STACK 0x800 /* stack at 0x40:0x800 -> 0x800 */
|
|
|
|
/* save general registers */
|
|
/* save some segments */
|
|
/* save callers stack segment .. */
|
|
/* ... in gs */
|
|
/* setup my 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
|
|
|
|
#define RESTORE_CALLERS_STACK \
|
|
pushw %gs ; /* restore callers stack segment */ \
|
|
popw %ss ; \
|
|
movw %bp,%sp ; /* restore stackpointer */ \
|
|
\
|
|
popw %es ; /* restore segment selectors */ \
|
|
popw %gs ; \
|
|
popw %ds ; \
|
|
\
|
|
popal /* restore GP registers */
|
|
|
|
#endif
|