1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
|
/****************************************************************************
*
* BIOS emulator and interface
* to Realmode X86 Emulator Library
*
* Copyright (C) 1996-1999 SciTech Software, Inc.
*
* ========================================================================
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of the authors not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The authors makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* ========================================================================
*
* Language: ANSI C
* Environment: Any
* Developer: Kendall Bennett
*
* Description: Header file for the real mode x86 BIOS emulator, which is
* used to warmboot any number of VGA compatible PCI/AGP
* controllers under any OS, on any processor family that
* supports PCI. We also allow the user application to call
* real mode BIOS functions and Int 10h functions (including
* the VESA BIOS).
*
****************************************************************************/
#ifndef __BIOSEMU_H
#define __BIOSEMU_H
#include <bios_emul.h>
#ifdef __KERNEL__
#include "x86emu.h"
#else
#include "x86emu.h"
#include "pmapi.h"
#include "pcilib.h"
#endif
/*---------------------- Macros and type definitions ----------------------*/
#pragma pack(1)
#define CRT_C 24 /* 24 CRT Controller Registers */
#define ATT_C 21 /* 21 Attribute Controller Registers */
#define GRA_C 9 /* 9 Graphics Controller Registers */
#define SEQ_C 5 /* 5 Sequencer Registers */
#define PAL_C 768 /* 768 Palette Registers */
/****************************************************************************
REMARKS:
Data structure used to describe the details for the BIOS emulator system
environment as used by the X86 emulator library.
HEADER:
biosemu.h
MEMBERS:
vgaInfo - VGA BIOS information structure
biosmem_base - Base of the BIOS image
biosmem_limit - Limit of the BIOS image
busmem_base - Base of the VGA bus memory
timer - Timer used to emulate PC timer ports
timer0 - Latched value for timer 0
timer0Latched - true if timer 0 value was just latched
timer2 - Current value for timer 2
emulateVGA - true to emulate VGA I/O and memory accesses
****************************************************************************/
typedef struct {
BE_VGAInfo vgaInfo;
ulong biosmem_base;
ulong biosmem_limit;
ulong busmem_base;
u32 timer0;
int timer0Latched;
u32 timer1;
int timer1Latched;
u32 timer2;
int timer2Latched;
int emulateVGA;
u8 emu61;
u8 emu70;
int flipFlop3C0;
u32 configAddress;
u8 emu3C0;
u8 emu3C1[ATT_C];
u8 emu3C2;
u8 emu3C4;
u8 emu3C5[SEQ_C];
u8 emu3C6;
uint emu3C7;
uint emu3C8;
u8 emu3C9[PAL_C];
u8 emu3CE;
u8 emu3CF[GRA_C];
u8 emu3D4;
u8 emu3D5[CRT_C];
u8 emu3DA;
} BE_sysEnv;
#ifdef __KERNEL__
/* Define some types when compiling for the Linux kernel that normally
* come from the SciTech PM library.
*/
/****************************************************************************
REMARKS:
Structure describing the 32-bit extended x86 CPU registers
HEADER:
pmapi.h
MEMBERS:
eax - Value of the EAX register
ebx - Value of the EBX register
ecx - Value of the ECX register
edx - Value of the EDX register
esi - Value of the ESI register
edi - Value of the EDI register
cflag - Value of the carry flag
****************************************************************************/
typedef struct {
u32 eax;
u32 ebx;
u32 ecx;
u32 edx;
u32 esi;
u32 edi;
u32 cflag;
} RMDWORDREGS;
/****************************************************************************
REMARKS:
Structure describing the 16-bit x86 CPU registers
HEADER:
pmapi.h
MEMBERS:
ax - Value of the AX register
bx - Value of the BX register
cx - Value of the CX register
dx - Value of the DX register
si - Value of the SI register
di - Value of the DI register
cflag - Value of the carry flag
****************************************************************************/
#ifdef __BIG_ENDIAN__
typedef struct {
u16 ax_hi, ax;
u16 bx_hi, bx;
u16 cx_hi, cx;
u16 dx_hi, dx;
u16 si_hi, si;
u16 di_hi, di;
u16 cflag_hi, cflag;
} RMWORDREGS;
#else
typedef struct {
u16 ax, ax_hi;
u16 bx, bx_hi;
u16 cx, cx_hi;
u16 dx, dx_hi;
u16 si, si_hi;
u16 di, di_hi;
u16 cflag, cflag_hi;
} RMWORDREGS;
#endif
/****************************************************************************
REMARKS:
Structure describing the 8-bit x86 CPU registers
HEADER:
pmapi.h
MEMBERS:
al - Value of the AL register
ah - Value of the AH register
bl - Value of the BL register
bh - Value of the BH register
cl - Value of the CL register
ch - Value of the CH register
dl - Value of the DL register
dh - Value of the DH register
****************************************************************************/
#ifdef __BIG_ENDIAN__
typedef struct {
u16 ax_hi;
u8 ah, al;
u16 bx_hi;
u8 bh, bl;
u16 cx_hi;
u8 ch, cl;
u16 dx_hi;
u8 dh, dl;
} RMBYTEREGS;
#else
typedef struct {
u8 al;
u8 ah;
u16 ax_hi;
u8 bl;
u8 bh;
u16 bx_hi;
u8 cl;
u8 ch;
u16 cx_hi;
u8 dl;
u8 dh;
u16 dx_hi;
} RMBYTEREGS;
#endif
/****************************************************************************
REMARKS:
Structure describing all the x86 CPU registers
HEADER:
pmapi.h
MEMBERS:
e - Member to access registers as 32-bit values
x - Member to access registers as 16-bit values
h - Member to access registers as 8-bit values
****************************************************************************/
typedef union {
RMDWORDREGS e;
RMWORDREGS x;
RMBYTEREGS h;
} RMREGS;
/****************************************************************************
REMARKS:
Structure describing all the x86 segment registers
HEADER:
pmapi.h
MEMBERS:
es - ES segment register
cs - CS segment register
ss - SS segment register
ds - DS segment register
fs - FS segment register
gs - GS segment register
****************************************************************************/
typedef struct {
u16 es;
u16 cs;
u16 ss;
u16 ds;
u16 fs;
u16 gs;
} RMSREGS;
#endif /* __KERNEL__ */
#ifndef __KERNEL__
/****************************************************************************
REMARKS:
Structure defining all the BIOS Emulator API functions as exported from
the Binary Portable DLL.
{secret}
****************************************************************************/
typedef struct {
ulong dwSize;
ibool(PMAPIP BE_init) (u32 debugFlags, int memSize, BE_VGAInfo * info);
void (PMAPIP BE_setVGA) (BE_VGAInfo * info);
void (PMAPIP BE_getVGA) (BE_VGAInfo * info);
void *(PMAPIP BE_mapRealPointer) (uint r_seg, uint r_off);
void *(PMAPIP BE_getVESABuf) (uint * len, uint * rseg, uint * roff);
void (PMAPIP BE_callRealMode) (uint seg, uint off, RMREGS * regs,
RMSREGS * sregs);
int (PMAPIP BE_int86) (int intno, RMREGS * in, RMREGS * out);
int (PMAPIP BE_int86x) (int intno, RMREGS * in, RMREGS * out,
RMSREGS * sregs);
void *reserved1;
void (PMAPIP BE_exit) (void);
} BE_exports;
/****************************************************************************
REMARKS:
Function pointer type for the Binary Portable DLL initialisation entry point.
{secret}
****************************************************************************/
typedef BE_exports *(PMAPIP BE_initLibrary_t) (PM_imports * PMImp);
#endif
#pragma pack()
/*---------------------------- Global variables ---------------------------*/
#ifdef __cplusplus
extern "C" { /* Use "C" linkage when in C++ mode */
#endif
/* {secret} Global BIOS emulator system environment */
extern BE_sysEnv _BE_env;
/*-------------------------- Function Prototypes --------------------------*/
/* BIOS emulator library entry points */
int X86API BE_init(u32 debugFlags, int memSize, BE_VGAInfo * info,
int shared);
void X86API BE_setVGA(BE_VGAInfo * info);
void X86API BE_getVGA(BE_VGAInfo * info);
void X86API BE_setDebugFlags(u32 debugFlags);
void *X86API BE_mapRealPointer(uint r_seg, uint r_off);
void *X86API BE_getVESABuf(uint * len, uint * rseg, uint * roff);
void X86API BE_callRealMode(uint seg, uint off, RMREGS * regs,
RMSREGS * sregs);
int X86API BE_int86(int intno, RMREGS * in, RMREGS * out);
int X86API BE_int86x(int intno, RMREGS * in, RMREGS * out,
RMSREGS * sregs);
void X86API BE_exit(void);
#ifdef __cplusplus
} /* End of "C" linkage for C++ */
#endif
#endif /* __BIOSEMU_H */
|