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diff --git a/board/MAI/bios_emulator/scitech/src/biosemu/bios.c b/board/MAI/bios_emulator/scitech/src/biosemu/bios.c
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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: Module implementing the BIOS specific functions.
-*
-****************************************************************************/
-
-#include "biosemui.h"
-
-/*----------------------------- Implementation ----------------------------*/
-
-/****************************************************************************
-PARAMETERS:
-intno - Interrupt number being serviced
-
-REMARKS:
-Handler for undefined interrupts.
-****************************************************************************/
-static void X86API undefined_intr(
- int intno)
-{
- if (BE_rdw(intno * 4 + 2) == BIOS_SEG)
- printk("biosEmu: undefined interrupt %xh called!\n",intno);
- else
- X86EMU_prepareForInt(intno);
-}
-
-/****************************************************************************
-PARAMETERS:
-intno - Interrupt number being serviced
-
-REMARKS:
-This function handles the default system BIOS Int 10h (the default is stored
-in the Int 42h vector by the system BIOS at bootup). We only need to handle
-a small number of special functions used by the BIOS during POST time.
-****************************************************************************/
-static void X86API int42(
- int intno)
-{
- if (M.x86.R_AH == 0x12 && M.x86.R_BL == 0x32) {
- if (M.x86.R_AL == 0) {
- /* Enable CPU accesses to video memory */
- PM_outpb(0x3c2, PM_inpb(0x3cc) | (u8)0x02);
- return;
- }
- else if (M.x86.R_AL == 1) {
- /* Disable CPU accesses to video memory */
- PM_outpb(0x3c2, PM_inpb(0x3cc) & (u8)~0x02);
- return;
- }
-#ifdef DEBUG
- else {
- printk("biosEmu/bios.int42: unknown function AH=0x12, BL=0x32, AL=%#02x\n",M.x86.R_AL);
- }
-#endif
- }
-#ifdef DEBUG
- else {
- printk("biosEmu/bios.int42: unknown function AH=%#02x, AL=%#02x, BL=%#02x\n",M.x86.R_AH, M.x86.R_AL, M.x86.R_BL);
- }
-#endif
-}
-
-/****************************************************************************
-PARAMETERS:
-intno - Interrupt number being serviced
-
-REMARKS:
-This function handles the default system BIOS Int 10h. If the POST code
-has not yet re-vectored the Int 10h BIOS interrupt vector, we handle this
-by simply calling the int42 interrupt handler above. Very early in the
-BIOS POST process, the vector gets replaced and we simply let the real
-mode interrupt handler process the interrupt.
-****************************************************************************/
-static void X86API int10(
- int intno)
-{
- if (BE_rdw(intno * 4 + 2) == BIOS_SEG)
- int42(intno);
- else
- X86EMU_prepareForInt(intno);
-}
-
-/* Result codes returned by the PCI BIOS */
-
-#define SUCCESSFUL 0x00
-#define FUNC_NOT_SUPPORT 0x81
-#define BAD_VENDOR_ID 0x83
-#define DEVICE_NOT_FOUND 0x86
-#define BAD_REGISTER_NUMBER 0x87
-#define SET_FAILED 0x88
-#define BUFFER_TOO_SMALL 0x89
-
-/****************************************************************************
-PARAMETERS:
-intno - Interrupt number being serviced
-
-REMARKS:
-This function handles the default Int 1Ah interrupt handler for the real
-mode code, which provides support for the PCI BIOS functions. Since we only
-want to allow the real mode BIOS code *only* see the PCI config space for
-its own device, we only return information for the specific PCI config
-space that we have passed in to the init function. This solves problems
-when using the BIOS to warm boot a secondary adapter when there is an
-identical adapter before it on the bus (some BIOS'es get confused in this
-case).
-****************************************************************************/
-static void X86API int1A(
- unused)
-{
- u16 pciSlot;
-
- /* Fail if no PCI device information has been registered */
- if (!_BE_env.vgaInfo.pciInfo)
- return;
- pciSlot = (u16)(_BE_env.vgaInfo.pciInfo->slot.i >> 8);
- switch (M.x86.R_AX) {
- case 0xB101: /* PCI bios present? */
- M.x86.R_AL = 0x00; /* no config space/special cycle generation support */
- M.x86.R_EDX = 0x20494350; /* " ICP" */
- M.x86.R_BX = 0x0210; /* Version 2.10 */
- M.x86.R_CL = 0; /* Max bus number in system */
- CLEAR_FLAG(F_CF);
- break;
- case 0xB102: /* Find PCI device */
- M.x86.R_AH = DEVICE_NOT_FOUND;
- if (M.x86.R_DX == _BE_env.vgaInfo.pciInfo->VendorID &&
- M.x86.R_CX == _BE_env.vgaInfo.pciInfo->DeviceID &&
- M.x86.R_SI == 0) {
- M.x86.R_AH = SUCCESSFUL;
- M.x86.R_BX = pciSlot;
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB103: /* Find PCI class code */
- M.x86.R_AH = DEVICE_NOT_FOUND;
- if (M.x86.R_CL == _BE_env.vgaInfo.pciInfo->Interface &&
- M.x86.R_CH == _BE_env.vgaInfo.pciInfo->SubClass &&
- (u8)(M.x86.R_ECX >> 16) == _BE_env.vgaInfo.pciInfo->BaseClass) {
- M.x86.R_AH = SUCCESSFUL;
- M.x86.R_BX = pciSlot;
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB108: /* Read configuration byte */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- M.x86.R_CL = (u8)PCI_accessReg(M.x86.R_DI,0,PCI_READ_BYTE,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB109: /* Read configuration word */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- M.x86.R_CX = (u16)PCI_accessReg(M.x86.R_DI,0,PCI_READ_WORD,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB10A: /* Read configuration dword */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- M.x86.R_ECX = (u32)PCI_accessReg(M.x86.R_DI,0,PCI_READ_DWORD,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB10B: /* Write configuration byte */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- PCI_accessReg(M.x86.R_DI,M.x86.R_CL,PCI_WRITE_BYTE,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB10C: /* Write configuration word */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- PCI_accessReg(M.x86.R_DI,M.x86.R_CX,PCI_WRITE_WORD,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- case 0xB10D: /* Write configuration dword */
- M.x86.R_AH = BAD_REGISTER_NUMBER;
- if (M.x86.R_BX == pciSlot) {
- M.x86.R_AH = SUCCESSFUL;
- PCI_accessReg(M.x86.R_DI,M.x86.R_ECX,PCI_WRITE_DWORD,_BE_env.vgaInfo.pciInfo);
- }
- CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
- break;
- default:
- printk("biosEmu/bios.int1a: unknown function AX=%#04x\n", M.x86.R_AX);
- }
-}
-
-/****************************************************************************
-REMARKS:
-This function initialises the BIOS emulation functions for the specific
-PCI display device. We insulate the real mode BIOS from any other devices
-on the bus, so that it will work correctly thinking that it is the only
-device present on the bus (ie: avoiding any adapters present in from of
-the device we are trying to control).
-****************************************************************************/
-void _BE_bios_init(
- u32 *intrTab)
-{
- int i;
- X86EMU_intrFuncs bios_intr_tab[256];
-
- for (i = 0; i < 256; ++i) {
- intrTab[i] = BIOS_SEG << 16;
- bios_intr_tab[i] = undefined_intr;
- }
- bios_intr_tab[0x10] = int10;
- bios_intr_tab[0x1A] = int1A;
- bios_intr_tab[0x42] = int42;
- X86EMU_setupIntrFuncs(bios_intr_tab);
-}
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