47 #define	BIOS_RES_BUFFER_ADDR		0x7000
50 #define	STARTING_DRVNUM	0x80
51 #define	FP_OFF(fp) (((uintptr_t)(fp)) & 0xFFFF)
52 #define	FP_SEG(fp) ((((uintptr_t)(fp)) >> 16) & 0xFFFF)
55 int biosdebug = 0;
63 biosdev_data_t biosdev_info[BIOSDEV_NUM]; /* from 0x80 to 0x87 */
78 	int got_devparams = 0;  in startup_bios_disk()
79 	int got_first_block = 0;  in startup_bios_disk()
89 	if (dobiosdev == 0)  in startup_bios_disk()
92 	for (drivenum = 0x80; drivenum < (0x80 + BIOSDEV_NUM); drivenum++) {  in startup_bios_disk()
110 			got_devparams = 0;  in startup_bios_disk()
112 		if ((got_first_block = read_firstblock(drivenum)) == 0) {  in startup_bios_disk()
118 			(void) sprintf((char *)name, "biosdev-0x%x", drivenum);  in startup_bios_disk()
122 			    (uchar_t *)&biosdev_info[drivenum - 0x80],  in startup_bios_disk()
131 	struct bop_regs rp = {0};  in bios_check_extension_present()
134 	rp.eax.word.ax = 0x4100;  in bios_check_extension_present()
135 	rp.ebx.word.bx = 0x55AA;  in bios_check_extension_present()
139 	BOP_DOINT(bootops, 0x13, &rp);  in bios_check_extension_present()
141 	if (((rp.eflags & PS_C) != 0) || (rp.ebx.word.bx != 0xAA55)) {  in bios_check_extension_present()
144 		return (0);  in bios_check_extension_present()
147 	if ((rp.ecx.word.cx & 0x7) == 0) {  in bios_check_extension_present()
150 		return (0);  in bios_check_extension_present()
159 	struct bop_regs rp = {0};  in get_dev_params()
174 	for (i = 0; i < sizeof (*bufp); i++)  in get_dev_params()
175 		((uchar_t *)bufp)[i] = 0;  in get_dev_params()
178 	rp.eax.word.ax = 0x4800;  in get_dev_params()
184 	BOP_DOINT(bootops, 0x13, &rp);  in get_dev_params()
186 	if ((rp.eflags & PS_C) != 0) {  in get_dev_params()
189 		return (0);  in get_dev_params()
192 	index = drivenum - 0x80;  in get_dev_params()
202 	for (i = 0; i < sizeof (*bufp); i++)  in get_dev_params()
211 	struct bop_regs rp = {0};  in drive_present()
213 	rp.eax.byte.ah = 0x8;	/* get params */  in drive_present()
216 	BOP_DOINT(bootops, 0x13, &rp);  in drive_present()
218 	if (((rp.eflags & PS_C) != 0) || rp.eax.byte.ah != 0) {  in drive_present()
221 		return (0);  in drive_present()
231 	struct bop_regs rp = {0};  in reset_disk()
234 	rp.eax.byte.ah = 0x0;   /* reset disk */  in reset_disk()
237 	BOP_DOINT(bootops, 0x13, &rp);  in reset_disk()
241 	if (((rp.eflags & PS_C) != 0) || status != 0)  in reset_disk()
251 	struct bop_regs rp = {0};  in read_firstblock()
261 	rp.eax.byte.ah = 0x2; 	/* Read disk */  in read_firstblock()
263 	rp.ecx.byte.ch = 0;	/* cyl & 0xff */  in read_firstblock()
264 	rp.ecx.byte.cl = 1;	/* cyl >> 2 & 0xc0 (sector number) */  in read_firstblock()
265 	rp.edx.byte.dh = 0;	/* head */  in read_firstblock()
272 	BOP_DOINT(bootops, 0x13, &rp);  in read_firstblock()
275 	if (((rp.eflags & PS_C) != 0) || status != 0) {  in read_firstblock()
277 		return (0);  in read_firstblock()
280 	dprintf(("drivenum %x uid at 0x1b8 is %x\n", drivenum,  in read_firstblock()
281 	    *(uint32_t *)(bufp +0x1b8)));  in read_firstblock()
283 	index = drivenum - 0x80;  in read_firstblock()
286 	for (i = 0; i < 512; i++)  in read_firstblock()
295 	struct bop_regs rp = {0};  in is_eltorito()
308 	for (i = 0; i < sizeof (*bufp); i++)  in is_eltorito()
309 		((uchar_t *)bufp)[i] = 0;  in is_eltorito()
312 	rp.eax.word.ax = 0x4b01;  in is_eltorito()
318 	BOP_DOINT(bootops, 0x13, &rp);  in is_eltorito()
320 	if ((rp.eflags & PS_C) != 0 || bufp->drivenum != drivenum) {  in is_eltorito()
321 		dprintf(("fn 0x4b01 FAILED on drive "  in is_eltorito()
324 		return (0);  in is_eltorito()