mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-02 17:13:28 +08:00
ece92f8505
ATI video card BIOS. and can be used for x86 code emulation by some modifications. Signed-off-by: Jason Jin <Jason.jin@freescale.com>
393 lines
11 KiB
C
393 lines
11 KiB
C
/****************************************************************************
|
|
*
|
|
* 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 */
|