From ece92f85053b8df613edcf05b26a416cbc3d629c Mon Sep 17 00:00:00 2001 From: Jason Jin Date: Fri, 6 Jul 2007 08:34:56 +0800 Subject: This is a BIOS emulator, porting from SciTech for u-boot, mainly for ATI video card BIOS. and can be used for x86 code emulation by some modifications. Signed-off-by: Jason Jin --- drivers/bios_emulator/include/biosemu.h | 392 ++++++++++++++++++++++++++++++++ 1 file changed, 392 insertions(+) create mode 100644 drivers/bios_emulator/include/biosemu.h (limited to 'drivers/bios_emulator/include/biosemu.h') diff --git a/drivers/bios_emulator/include/biosemu.h b/drivers/bios_emulator/include/biosemu.h new file mode 100644 index 0000000000..13cb3170c1 --- /dev/null +++ b/drivers/bios_emulator/include/biosemu.h @@ -0,0 +1,392 @@ +/**************************************************************************** +* +* 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 */ -- cgit v1.2.1