[people/ms/u-boot.git] / drivers / bios_emulator / bios.c

/****************************************************************************
*
*                        BIOS emulator and interface
*                      to Realmode X86 Emulator Library
*
*  Copyright (C) 2007 Freescale Semiconductor, Inc.
*  Jason Jin <Jason.jin@freescale.com>
*
*               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.
*
*		Jason ported this file to u-boot to run the ATI video card
*		video BIOS.
*
****************************************************************************/

#include <common.h>
#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) {
		DB(printf("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 {
			printf("int42: unknown function AH=0x12, BL=0x32, AL=%#02x\n",
			     M.x86.R_AL);
		}
#endif
	}
#ifdef  DEBUG
	else {
		printf("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(int unused)
{
	u16 pciSlot;

#ifdef __KERNEL__
	u8 interface, subclass, baseclass;

	/* Initialise the PCI slot number */
	pciSlot = ((int)_BE_env.vgaInfo.bus << 8) |
	    ((int)_BE_env.vgaInfo.device << 3) | (int)_BE_env.vgaInfo.function;
#else
/* Fail if no PCI device information has been registered */
	if (!_BE_env.vgaInfo.pciInfo)
		return;

	pciSlot = (u16) (_BE_env.vgaInfo.pciInfo->slot.i >> 8);
#endif
	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;
#ifdef __KERNEL__
		if (M.x86.R_DX == _BE_env.vgaInfo.VendorID &&
		    M.x86.R_CX == _BE_env.vgaInfo.DeviceID && M.x86.R_SI == 0) {
#else
		if (M.x86.R_DX == _BE_env.vgaInfo.pciInfo->VendorID &&
		    M.x86.R_CX == _BE_env.vgaInfo.pciInfo->DeviceID &&
		    M.x86.R_SI == 0) {
#endif
			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;
#ifdef __KERNEL__
		pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_PROG,
				     &interface);
		pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_DEVICE,
				     &subclass);
		pci_read_config_byte(_BE_env.vgaInfo.pcidev,
				     PCI_CLASS_DEVICE + 1, &baseclass);
		if (M.x86.R_CL == interface && M.x86.R_CH == subclass
		    && (u8) (M.x86.R_ECX >> 16) == baseclass) {
#else
		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) {
#endif
			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;
#ifdef __KERNEL__
			pci_read_config_byte(_BE_env.vgaInfo.pcidev, M.x86.R_DI,
					     &M.x86.R_CL);
#else
			M.x86.R_CL =
			    (u8) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_BYTE,
					       _BE_env.vgaInfo.pciInfo);
#endif
		}
		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;
#ifdef __KERNEL__
			pci_read_config_word(_BE_env.vgaInfo.pcidev, M.x86.R_DI,
					     &M.x86.R_CX);
#else
			M.x86.R_CX =
			    (u16) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_WORD,
						_BE_env.vgaInfo.pciInfo);
#endif
		}
		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;
#ifdef __KERNEL__
			pci_read_config_dword(_BE_env.vgaInfo.pcidev,
					      M.x86.R_DI, &M.x86.R_ECX);
#else
			M.x86.R_ECX =
			    (u32) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_DWORD,
						_BE_env.vgaInfo.pciInfo);
#endif
		}
		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;
#ifdef __KERNEL__
			pci_write_config_byte(_BE_env.vgaInfo.pcidev,
					      M.x86.R_DI, M.x86.R_CL);
#else
			PCI_accessReg(M.x86.R_DI, M.x86.R_CL, PCI_WRITE_BYTE,
				      _BE_env.vgaInfo.pciInfo);
#endif
		}
		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;
#ifdef __KERNEL__
			pci_write_config_word(_BE_env.vgaInfo.pcidev,
					      M.x86.R_DI, M.x86.R_CX);
#else
			PCI_accessReg(M.x86.R_DI, M.x86.R_CX, PCI_WRITE_WORD,
				      _BE_env.vgaInfo.pciInfo);
#endif
		}
		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;
#ifdef __KERNEL__
			pci_write_config_dword(_BE_env.vgaInfo.pcidev,
					       M.x86.R_DI, M.x86.R_ECX);
#else
			PCI_accessReg(M.x86.R_DI, M.x86.R_ECX, PCI_WRITE_DWORD,
				      _BE_env.vgaInfo.pciInfo);
#endif
		}
		CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
		break;
	default:
		printf("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).
****************************************************************************/
#define BE_constLE_32(v)    ((((((v)&0xff00)>>8)|(((v)&0xff)<<8))<<16)|(((((v)&0xff000000)>>8)|(((v)&0x00ff0000)<<8))>>16))

void _BE_bios_init(u32 * intrTab)
{
	int i;
	X86EMU_intrFuncs bios_intr_tab[256];

	for (i = 0; i < 256; ++i) {
		intrTab[i] = BE_constLE_32(BIOS_SEG << 16);
		bios_intr_tab[i] = undefined_intr;
	}
	bios_intr_tab[0x10] = int10;
	bios_intr_tab[0x1A] = int1A;
	bios_intr_tab[0x42] = int42;
	bios_intr_tab[0x6D] = int10;
	X86EMU_setupIntrFuncs(bios_intr_tab);
}
Commit	Line	Data
ece92f85 JJ	1	/****************************************************************************
	2	*
	3	* BIOS emulator and interface
	4	* to Realmode X86 Emulator Library
	5	*
4c2e3da8	6	* Copyright (C) 2007 Freescale Semiconductor, Inc.
ece92f85 JJ	7	* Jason Jin <Jason.jin@freescale.com>
	8	*
	9	* Copyright (C) 1996-1999 SciTech Software, Inc.
	10	*
	11	* ========================================================================
	12	*
	13	* Permission to use, copy, modify, distribute, and sell this software and
	14	* its documentation for any purpose is hereby granted without fee,
	15	* provided that the above copyright notice appear in all copies and that
	16	* both that copyright notice and this permission notice appear in
	17	* supporting documentation, and that the name of the authors not be used
	18	* in advertising or publicity pertaining to distribution of the software
	19	* without specific, written prior permission. The authors makes no
	20	* representations about the suitability of this software for any purpose.
	21	* It is provided "as is" without express or implied warranty.
	22	*
	23	* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	24	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
	25	* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	26	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
	27	* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
	28	* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
	29	* PERFORMANCE OF THIS SOFTWARE.
	30	*
	31	* ========================================================================
	32	*
	33	* Language: ANSI C
	34	* Environment: Any
	35	* Developer: Kendall Bennett
	36	*
	37	* Description: Module implementing the BIOS specific functions.
	38	*
53677ef1 WD	39	* Jason ported this file to u-boot to run the ATI video card
53677ef1 WD	40	* video BIOS.
ece92f85 JJ	41	*
	42	****************************************************************************/
	43
78cff50e	44	#include <common.h>
ece92f85 JJ	45	#include "biosemui.h"
	46
	47	/----------------------------- Implementation ----------------------------/
	48
	49	/****************************************************************************
	50	PARAMETERS:
	51	intno - Interrupt number being serviced
	52
	53	REMARKS:
	54	Handler for undefined interrupts.
	55	****************************************************************************/
	56	static void X86API undefined_intr(int intno)
	57	{
	58	if (BE_rdw(intno * 4 + 2) == BIOS_SEG) {
	59	DB(printf("biosEmu: undefined interrupt %xh called!\n", intno);)
	60	} else
	61	X86EMU_prepareForInt(intno);
	62	}
	63
	64	/****************************************************************************
	65	PARAMETERS:
	66	intno - Interrupt number being serviced
	67
	68	REMARKS:
	69	This function handles the default system BIOS Int 10h (the default is stored
	70	in the Int 42h vector by the system BIOS at bootup). We only need to handle
	71	a small number of special functions used by the BIOS during POST time.
	72	****************************************************************************/
	73	static void X86API int42(int intno)
	74	{
	75	if (M.x86.R_AH == 0x12 && M.x86.R_BL == 0x32) {
	76	if (M.x86.R_AL == 0) {
	77	/* Enable CPU accesses to video memory */
	78	PM_outpb(0x3c2, PM_inpb(0x3cc) \| (u8) 0x02);
	79	return;
	80	} else if (M.x86.R_AL == 1) {
	81	/* Disable CPU accesses to video memory */
	82	PM_outpb(0x3c2, PM_inpb(0x3cc) & (u8) ~ 0x02);
	83	return;
	84	}
	85	#ifdef DEBUG
	86	else {
	87	printf("int42: unknown function AH=0x12, BL=0x32, AL=%#02x\n",
	88	M.x86.R_AL);
	89	}
	90	#endif
	91	}
	92	#ifdef DEBUG
	93	else {
	94	printf("int42: unknown function AH=%#02x, AL=%#02x, BL=%#02x\n",
	95	M.x86.R_AH, M.x86.R_AL, M.x86.R_BL);
	96	}
	97	#endif
	98	}
	99
	100	/****************************************************************************
	101	PARAMETERS:
	102	intno - Interrupt number being serviced
	103
	104	REMARKS:
	105	This function handles the default system BIOS Int 10h. If the POST code
	106	has not yet re-vectored the Int 10h BIOS interrupt vector, we handle this
	107	by simply calling the int42 interrupt handler above. Very early in the
	108	BIOS POST process, the vector gets replaced and we simply let the real
109	mode interrupt handler process the interrupt.
110	****************************************************************************/
111	static void X86API int10(int intno)
112	{
113	if (BE_rdw(intno * 4 + 2) == BIOS_SEG)
114	int42(intno);
115	else
116	X86EMU_prepareForInt(intno);
117	}
118
119	/* Result codes returned by the PCI BIOS */
120
121	#define SUCCESSFUL 0x00
122	#define FUNC_NOT_SUPPORT 0x81
123	#define BAD_VENDOR_ID 0x83
124	#define DEVICE_NOT_FOUND 0x86
125	#define BAD_REGISTER_NUMBER 0x87
126	#define SET_FAILED 0x88
127	#define BUFFER_TOO_SMALL 0x89
128
129	/****************************************************************************
130	PARAMETERS:
131	intno - Interrupt number being serviced
132
133	REMARKS:
134	This function handles the default Int 1Ah interrupt handler for the real
135	mode code, which provides support for the PCI BIOS functions. Since we only
136	want to allow the real mode BIOS code only see the PCI config space for
137	its own device, we only return information for the specific PCI config
138	space that we have passed in to the init function. This solves problems
139	when using the BIOS to warm boot a secondary adapter when there is an
140	identical adapter before it on the bus (some BIOS'es get confused in this
141	case).
142	****************************************************************************/
143	static void X86API int1A(int unused)
144	{
145	u16 pciSlot;
146
147	#ifdef __KERNEL__
148	u8 interface, subclass, baseclass;
149
150	/* Initialise the PCI slot number */
151	pciSlot = ((int)_BE_env.vgaInfo.bus << 8) \|
152	((int)_BE_env.vgaInfo.device << 3) \| (int)_BE_env.vgaInfo.function;
153	#else
154	/* Fail if no PCI device information has been registered */
155	if (!_BE_env.vgaInfo.pciInfo)
156	return;
157
158	pciSlot = (u16) (_BE_env.vgaInfo.pciInfo->slot.i >> 8);
159	#endif
160	switch (M.x86.R_AX) {
161	case 0xB101: /* PCI bios present? */
162	M.x86.R_AL = 0x00; /* no config space/special cycle generation support */
163	M.x86.R_EDX = 0x20494350; /* " ICP" */
164	M.x86.R_BX = 0x0210; /* Version 2.10 */
165	M.x86.R_CL = 0; /* Max bus number in system */
166	CLEAR_FLAG(F_CF);
167	break;
168	case 0xB102: /* Find PCI device */
169	M.x86.R_AH = DEVICE_NOT_FOUND;
170	#ifdef __KERNEL__
171	if (M.x86.R_DX == _BE_env.vgaInfo.VendorID &&
172	M.x86.R_CX == _BE_env.vgaInfo.DeviceID && M.x86.R_SI == 0) {
173	#else
174	if (M.x86.R_DX == _BE_env.vgaInfo.pciInfo->VendorID &&
175	M.x86.R_CX == _BE_env.vgaInfo.pciInfo->DeviceID &&
176	M.x86.R_SI == 0) {
177	#endif
178	M.x86.R_AH = SUCCESSFUL;
179	M.x86.R_BX = pciSlot;
180	}
181	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
182	break;
183	case 0xB103: /* Find PCI class code */
184	M.x86.R_AH = DEVICE_NOT_FOUND;
185	#ifdef __KERNEL__
186	pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_PROG,
187	&interface);
188	pci_read_config_byte(_BE_env.vgaInfo.pcidev, PCI_CLASS_DEVICE,
189	&subclass);
190	pci_read_config_byte(_BE_env.vgaInfo.pcidev,
191	PCI_CLASS_DEVICE + 1, &baseclass);
192	if (M.x86.R_CL == interface && M.x86.R_CH == subclass
193	&& (u8) (M.x86.R_ECX >> 16) == baseclass) {
194	#else
195	if (M.x86.R_CL == _BE_env.vgaInfo.pciInfo->Interface &&
196	M.x86.R_CH == _BE_env.vgaInfo.pciInfo->SubClass &&
197	(u8) (M.x86.R_ECX >> 16) ==
198	_BE_env.vgaInfo.pciInfo->BaseClass) {
199	#endif
200	M.x86.R_AH = SUCCESSFUL;
201	M.x86.R_BX = pciSlot;
202	}
203	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
204	break;
205	case 0xB108: /* Read configuration byte */
206	M.x86.R_AH = BAD_REGISTER_NUMBER;
207	if (M.x86.R_BX == pciSlot) {
208	M.x86.R_AH = SUCCESSFUL;
209	#ifdef __KERNEL__
210	pci_read_config_byte(_BE_env.vgaInfo.pcidev, M.x86.R_DI,
211	&M.x86.R_CL);
212	#else
213	M.x86.R_CL =
214	(u8) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_BYTE,
215	_BE_env.vgaInfo.pciInfo);
216	#endif
217	}
218	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
219	break;
220	case 0xB109: /* Read configuration word */
221	M.x86.R_AH = BAD_REGISTER_NUMBER;
222	if (M.x86.R_BX == pciSlot) {
223	M.x86.R_AH = SUCCESSFUL;
224	#ifdef __KERNEL__
225	pci_read_config_word(_BE_env.vgaInfo.pcidev, M.x86.R_DI,
226	&M.x86.R_CX);
227	#else
228	M.x86.R_CX =
229	(u16) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_WORD,
230	_BE_env.vgaInfo.pciInfo);
231	#endif
232	}
233	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
234	break;
235	case 0xB10A: /* Read configuration dword */
236	M.x86.R_AH = BAD_REGISTER_NUMBER;
237	if (M.x86.R_BX == pciSlot) {
238	M.x86.R_AH = SUCCESSFUL;
239	#ifdef __KERNEL__
240	pci_read_config_dword(_BE_env.vgaInfo.pcidev,
241	M.x86.R_DI, &M.x86.R_ECX);
242	#else
243	M.x86.R_ECX =
244	(u32) PCI_accessReg(M.x86.R_DI, 0, PCI_READ_DWORD,
245	_BE_env.vgaInfo.pciInfo);
246	#endif
247	}
248	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
249	break;
250	case 0xB10B: /* Write configuration byte */
251	M.x86.R_AH = BAD_REGISTER_NUMBER;
252	if (M.x86.R_BX == pciSlot) {
253	M.x86.R_AH = SUCCESSFUL;
254	#ifdef __KERNEL__
255	pci_write_config_byte(_BE_env.vgaInfo.pcidev,
256	M.x86.R_DI, M.x86.R_CL);
257	#else
258	PCI_accessReg(M.x86.R_DI, M.x86.R_CL, PCI_WRITE_BYTE,
259	_BE_env.vgaInfo.pciInfo);
260	#endif
261	}
262	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
263	break;
264	case 0xB10C: /* Write configuration word */
265	M.x86.R_AH = BAD_REGISTER_NUMBER;
266	if (M.x86.R_BX == pciSlot) {
267	M.x86.R_AH = SUCCESSFUL;
268	#ifdef __KERNEL__
269	pci_write_config_word(_BE_env.vgaInfo.pcidev,
270	M.x86.R_DI, M.x86.R_CX);
271	#else
272	PCI_accessReg(M.x86.R_DI, M.x86.R_CX, PCI_WRITE_WORD,
273	_BE_env.vgaInfo.pciInfo);
274	#endif
275	}
276	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
277	break;
278	case 0xB10D: /* Write configuration dword */
279	M.x86.R_AH = BAD_REGISTER_NUMBER;
280	if (M.x86.R_BX == pciSlot) {
281	M.x86.R_AH = SUCCESSFUL;
282	#ifdef __KERNEL__
283	pci_write_config_dword(_BE_env.vgaInfo.pcidev,
284	M.x86.R_DI, M.x86.R_ECX);
285	#else
286	PCI_accessReg(M.x86.R_DI, M.x86.R_ECX, PCI_WRITE_DWORD,
287	_BE_env.vgaInfo.pciInfo);
288	#endif
289	}
290	CONDITIONAL_SET_FLAG((M.x86.R_AH != SUCCESSFUL), F_CF);
291	break;
292	default:
293	printf("biosEmu/bios.int1a: unknown function AX=%#04x\n",
294	M.x86.R_AX);
295	}
296	}
297
298	/****************************************************************************
299	REMARKS:
300	This function initialises the BIOS emulation functions for the specific
301	PCI display device. We insulate the real mode BIOS from any other devices
302	on the bus, so that it will work correctly thinking that it is the only
303	device present on the bus (ie: avoiding any adapters present in from of
304	the device we are trying to control).
305	****************************************************************************/
306	#define BE_constLE_32(v) ((((((v)&0xff00)>>8)\|(((v)&0xff)<<8))<<16)\|(((((v)&0xff000000)>>8)\|(((v)&0x00ff0000)<<8))>>16))
307
308	void _BE_bios_init(u32 * intrTab)
309	{
310	int i;
311	X86EMU_intrFuncs bios_intr_tab[256];
312
313	for (i = 0; i < 256; ++i) {
314	intrTab[i] = BE_constLE_32(BIOS_SEG << 16);
315	bios_intr_tab[i] = undefined_intr;
316	}
317	bios_intr_tab[0x10] = int10;
318	bios_intr_tab[0x1A] = int1A;
319	bios_intr_tab[0x42] = int42;
320	bios_intr_tab[0x6D] = int10;
321	X86EMU_setupIntrFuncs(bios_intr_tab);
322	}