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/****************************************************************************
*
* 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
#ifdef __KERNEL__
#include "x86emu.h"
#else
#include "x86emu.h"
#include "pmapi.h"
#include "pcilib.h"
#endif
/*---------------------- Macros and type definitions ----------------------*/
#pragma pack(1)
#ifndef __KERNEL__
/****************************************************************************
REMARKS:
Data structure used to describe the details specific to a particular VGA
controller. This information is used to allow the VGA controller to be
swapped on the fly within the BIOS emulator.
HEADER:
biosemu.h
MEMBERS:
pciInfo - PCI device information block for the controller
BIOSImage - Pointer to a read/write copy of the BIOS image
BIOSImageLen - Length of the BIOS image
LowMem - Copy of key low memory areas
****************************************************************************/
typedef struct {
PCIDeviceInfo *pciInfo;
void *BIOSImage;
ulong BIOSImageLen;
uchar LowMem[1536];
} BE_VGAInfo;
#else
/****************************************************************************
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
****************************************************************************/
typedef struct {
int function;
int device;
int bus;
u32 VendorID;
u32 DeviceID;
pci_dev_t pcidev;
void *BIOSImage;
u32 BIOSImageLen;
u8 LowMem[1536];
} BE_VGAInfo;
#endif /* __KERNEL__ */
#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 */
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