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Kevin O'Connorf13b0082008-08-17 11:26:42 -04001// Code to load disk image and start system boot.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05002//
3// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2002 MandrakeSoft S.A.
5//
Kevin O'Connorb1b7c2a2009-01-15 20:52:58 -05006// This file may be distributed under the terms of the GNU LGPLv3 license.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05007
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05008#include "util.h" // irq_enable
Kevin O'Connor9521e262008-07-04 13:04:29 -04009#include "biosvar.h" // GET_EBDA
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -050010#include "config.h" // CONFIG_*
Kevin O'Connor180a9592008-03-04 22:50:53 -050011#include "disk.h" // cdrom_boot
Kevin O'Connor9521e262008-07-04 13:04:29 -040012#include "bregs.h" // struct bregs
Kevin O'Connorc659fde2008-12-28 23:43:20 -050013#include "boot.h" // struct ipl_s
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050014#include "cmos.h" // inb_cmos
Kevin O'Connorc659fde2008-12-28 23:43:20 -050015
16struct ipl_s IPL;
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050017
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050018
19/****************************************************************
Kevin O'Connor0a924122009-02-08 19:43:47 -050020 * IPL and BCV handlers
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050021 ****************************************************************/
22
23void
24boot_setup()
25{
26 if (! CONFIG_BOOT)
27 return;
28 dprintf(3, "init boot device ordering\n");
29
30 memset(&IPL, 0, sizeof(IPL));
31
32 // Floppy drive
Kevin O'Connor0a924122009-02-08 19:43:47 -050033 struct ipl_entry_s *ie = &IPL.bev[0];
Kevin O'Connor71f036d2009-02-08 16:57:22 -050034 ie->type = IPL_TYPE_FLOPPY;
35 ie->description = "Floppy";
36 ie++;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050037
38 // First HDD
Kevin O'Connor71f036d2009-02-08 16:57:22 -050039 ie->type = IPL_TYPE_HARDDISK;
40 ie->description = "Hard Disk";
41 ie++;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050042
43 // CDROM
44 if (CONFIG_CDROM_BOOT) {
Kevin O'Connor71f036d2009-02-08 16:57:22 -050045 ie->type = IPL_TYPE_CDROM;
46 ie->description = "CD-Rom";
47 ie++;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050048 }
49
Kevin O'Connor67823442009-04-13 14:14:51 -040050 if (CONFIG_COREBOOT_FLASH) {
51 ie->type = IPL_TYPE_CBFS;
52 ie->description = "CBFS";
53 ie++;
54 }
55
Kevin O'Connor0a924122009-02-08 19:43:47 -050056 IPL.bevcount = ie - IPL.bev;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050057 SET_EBDA(boot_sequence, 0xffff);
58 if (CONFIG_COREBOOT) {
59 // XXX - hardcode defaults for coreboot.
Kevin O'Connorff8c1412009-04-18 17:02:41 -040060 IPL.bootorder = 0x87654231;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050061 IPL.checkfloppysig = 1;
62 } else {
63 // On emulators, get boot order from nvram.
64 IPL.bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
65 | ((inb_cmos(CMOS_BIOS_BOOTFLAG1) & 0xf0) << 4));
66 if (!(inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1))
67 IPL.checkfloppysig = 1;
68 }
69}
70
71// Add a BEV vector for a given pnp compatible option rom.
72void
73add_bev(u16 seg, u16 bev, u16 desc)
74{
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050075 if (! CONFIG_BOOT)
76 return;
Kevin O'Connor0a924122009-02-08 19:43:47 -050077 if (IPL.bevcount >= ARRAY_SIZE(IPL.bev))
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050078 return;
79
Kevin O'Connor0a924122009-02-08 19:43:47 -050080 struct ipl_entry_s *ie = &IPL.bev[IPL.bevcount++];
Kevin O'Connor71f036d2009-02-08 16:57:22 -050081 ie->type = IPL_TYPE_BEV;
82 ie->vector = (seg << 16) | bev;
Kevin O'Connor0a924122009-02-08 19:43:47 -050083 const char *d = "Unknown";
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050084 if (desc)
Kevin O'Connor0a924122009-02-08 19:43:47 -050085 d = MAKE_FLATPTR(seg, desc);
86 ie->description = d;
87}
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050088
Kevin O'Connor0a924122009-02-08 19:43:47 -050089// Add a bcv entry for an expansion card harddrive or legacy option rom
90void
91add_bcv(u16 seg, u16 ip, u16 desc)
92{
93 if (! CONFIG_BOOT)
94 return;
95 if (IPL.bcvcount >= ARRAY_SIZE(IPL.bcv))
96 return;
97
98 struct ipl_entry_s *ie = &IPL.bcv[IPL.bcvcount++];
99 ie->type = IPL_TYPE_BEV;
100 ie->vector = (seg << 16) | ip;
101 const char *d = "Legacy option rom";
102 if (desc)
103 d = MAKE_FLATPTR(seg, desc);
104 ie->description = d;
105}
106
107// Add a bcv entry for an ata harddrive
108void
109add_bcv_hd(int driveid, const char *desc)
110{
111 if (! CONFIG_BOOT)
112 return;
113 if (IPL.bcvcount >= ARRAY_SIZE(IPL.bcv))
114 return;
115
116 struct ipl_entry_s *ie = &IPL.bcv[IPL.bcvcount++];
117 ie->type = IPL_TYPE_HARDDISK;
118 ie->vector = driveid;
119 ie->description = desc;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500120}
121
122
123/****************************************************************
Kevin O'Connor0a924122009-02-08 19:43:47 -0500124 * Boot menu and BCV execution
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500125 ****************************************************************/
126
Kevin O'Connor0a924122009-02-08 19:43:47 -0500127// Show a generic menu item
128static int
129menu_show_default(struct ipl_entry_s *ie, int menupos)
130{
131 char desc[33];
132 printf("%d. %s\n", menupos
133 , strtcpy(desc, ie->description, ARRAY_SIZE(desc)));
134 return 1;
135}
136
137// Show floppy menu item - but only if there exists a floppy drive.
138static int
139menu_show_floppy(struct ipl_entry_s *ie, int menupos)
140{
Kevin O'Connorafd05202009-08-16 12:21:44 -0400141 int i;
142 for (i = 0; i < Drives.floppycount; i++) {
143 printf("%d. floppy %d\n", menupos + i, i+1);
144 }
145 return Drives.floppycount;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500146}
147
148// Show menu items from BCV list.
149static int
150menu_show_harddisk(struct ipl_entry_s *ie, int menupos)
151{
152 int i;
153 for (i = 0; i < IPL.bcvcount; i++) {
154 struct ipl_entry_s *ie = &IPL.bcv[i];
155 switch (ie->type) {
156 case IPL_TYPE_HARDDISK:
157 printf("%d. ata%d-%d %s\n", menupos + i
Kevin O'Connor7da1dcd2009-02-16 10:51:24 -0500158 , ie->vector / 2, ie->vector % 2, ie->description);
Kevin O'Connor0a924122009-02-08 19:43:47 -0500159 break;
160 default:
161 menu_show_default(ie, menupos+i);
162 break;
163 }
164 }
165 return IPL.bcvcount;
166}
167
168// Show cdrom menu item - but only if there exists a cdrom drive.
169static int
170menu_show_cdrom(struct ipl_entry_s *ie, int menupos)
171{
Kevin O'Connor7da1dcd2009-02-16 10:51:24 -0500172 int i;
Kevin O'Connorc892b132009-08-11 21:59:37 -0400173 for (i = 0; i < Drives.cdcount; i++) {
Kevin O'Connor0a0e42e2009-08-16 12:09:44 -0400174 int driveid = Drives.idmap[EXTTYPE_CD][i];
Kevin O'Connor7da1dcd2009-02-16 10:51:24 -0500175 printf("%d. CD-Rom [ata%d-%d %s]\n", menupos + i
Kevin O'Connorc892b132009-08-11 21:59:37 -0400176 , driveid / 2, driveid % 2, Drives.drives[driveid].model);
Kevin O'Connor7da1dcd2009-02-16 10:51:24 -0500177 }
Kevin O'Connorc892b132009-08-11 21:59:37 -0400178 return Drives.cdcount;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500179}
180
Kevin O'Connor67823442009-04-13 14:14:51 -0400181// Show coreboot-fs menu item.
182static int
183menu_show_cbfs(struct ipl_entry_s *ie, int menupos)
184{
185 int count = 0;
Kevin O'Connor1f836252009-08-16 20:17:35 -0400186 struct cbfs_file *file;
Kevin O'Connor67823442009-04-13 14:14:51 -0400187 for (;;) {
Kevin O'Connor1f836252009-08-16 20:17:35 -0400188 file = cbfs_findprefix("img/", file);
189 if (!file)
Kevin O'Connor67823442009-04-13 14:14:51 -0400190 break;
Kevin O'Connor1f836252009-08-16 20:17:35 -0400191 const char *filename = cbfs_filename(file);
Kevin O'Connor67823442009-04-13 14:14:51 -0400192 printf("%d. Payload [%s]\n", menupos + count, &filename[4]);
193 count++;
194 if (count > 8)
195 break;
196 }
197 return count;
198}
199
Kevin O'Connor0a924122009-02-08 19:43:47 -0500200// Show IPL option menu.
201static void
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500202interactive_bootmenu()
203{
204 if (! CONFIG_BOOTMENU)
205 return;
206
207 while (get_keystroke(0) >= 0)
208 ;
209
210 printf("Press F12 for boot menu.\n\n");
211
Kevin O'Connor217d3632009-04-29 22:00:21 -0400212 int scan_code = get_keystroke(CONFIG_BOOTMENU_WAIT);
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500213 if (scan_code != 0x86)
214 /* not F12 */
215 return;
216
217 while (get_keystroke(0) >= 0)
218 ;
219
220 printf("Select boot device:\n\n");
221
Kevin O'Connor0a924122009-02-08 19:43:47 -0500222 int subcount[ARRAY_SIZE(IPL.bev)];
223 int menupos = 1;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500224 int i;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500225 for (i = 0; i < IPL.bevcount; i++) {
226 struct ipl_entry_s *ie = &IPL.bev[i];
227 int sc = 1;
228 switch (ie->type) {
229 case IPL_TYPE_FLOPPY:
230 sc = menu_show_floppy(ie, menupos);
231 break;
232 case IPL_TYPE_HARDDISK:
233 sc = menu_show_harddisk(ie, menupos);
234 break;
235 case IPL_TYPE_CDROM:
236 sc = menu_show_cdrom(ie, menupos);
237 break;
Kevin O'Connor67823442009-04-13 14:14:51 -0400238 case IPL_TYPE_CBFS:
239 sc = menu_show_cbfs(ie, menupos);
240 break;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500241 default:
242 sc = menu_show_default(ie, menupos);
243 break;
244 }
245 subcount[i] = sc;
246 menupos += sc;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500247 }
248
249 for (;;) {
250 scan_code = get_keystroke(1000);
251 if (scan_code == 0x01)
252 // ESC
253 break;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500254 if (scan_code < 1 || scan_code > menupos)
255 continue;
256 int choice = scan_code - 1;
257
258 // Find out which IPL this was for.
259 int bev = 0;
260 while (choice > subcount[bev]) {
261 choice -= subcount[bev];
262 bev++;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500263 }
Kevin O'Connor67823442009-04-13 14:14:51 -0400264 IPL.bev[bev].subchoice = choice-1;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500265
266 // Add user choice to the boot order.
267 IPL.bootorder = (IPL.bootorder << 4) | (bev+1);
268 break;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500269 }
270 printf("\n");
271}
272
Kevin O'Connor0a924122009-02-08 19:43:47 -0500273// Run the specified bcv.
274static void
275run_bcv(struct ipl_entry_s *ie)
276{
277 switch (ie->type) {
278 case IPL_TYPE_HARDDISK:
Kevin O'Connorc892b132009-08-11 21:59:37 -0400279 map_hd_drive(ie->vector);
Kevin O'Connor0a924122009-02-08 19:43:47 -0500280 break;
281 case IPL_TYPE_BEV:
282 call_bcv(ie->vector >> 16, ie->vector & 0xffff);
283 break;
284 }
285}
286
287// Prepare for boot - show menu and run bcvs.
288void
289boot_prep()
290{
291 if (! CONFIG_BOOT)
292 return;
293
294 // Allow user to modify BCV/IPL order.
295 interactive_bootmenu();
296
Kevin O'Connorafd05202009-08-16 12:21:44 -0400297 // Setup floppy boot order
298 int override = IPL.bev[0].subchoice;
299 int tmp = Drives.idmap[EXTTYPE_FLOPPY][0];
300 Drives.idmap[EXTTYPE_FLOPPY][0] = Drives.idmap[EXTTYPE_FLOPPY][override];
301 Drives.idmap[EXTTYPE_FLOPPY][override] = tmp;
302
Kevin O'Connor0a924122009-02-08 19:43:47 -0500303 // Run BCVs
Kevin O'Connorafd05202009-08-16 12:21:44 -0400304 override = IPL.bev[1].subchoice;
Kevin O'Connor7da1dcd2009-02-16 10:51:24 -0500305 if (override < IPL.bcvcount)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500306 run_bcv(&IPL.bcv[override]);
307 int i;
308 for (i=0; i<IPL.bcvcount; i++)
309 if (i != override)
310 run_bcv(&IPL.bcv[i]);
311}
312
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500313
314/****************************************************************
315 * Boot code (int 18/19)
316 ****************************************************************/
317
Kevin O'Connor0a924122009-02-08 19:43:47 -0500318// Jump to a bootup entry point.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500319static void
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500320call_boot_entry(u16 bootseg, u16 bootip, u8 bootdrv)
321{
Kevin O'Connor91b53a72009-05-05 22:52:09 -0400322 dprintf(1, "Booting from %04x:%04x\n", bootseg, bootip);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500323
324 struct bregs br;
325 memset(&br, 0, sizeof(br));
Kevin O'Connor9f985422009-09-09 11:34:39 -0400326 br.code = SEGOFF(bootseg, bootip);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500327 // Set the magic number in ax and the boot drive in dl.
328 br.dl = bootdrv;
329 br.ax = 0xaa55;
330 call16(&br);
331}
332
333// Boot from a disk (either floppy or harddrive)
334static void
335boot_disk(u8 bootdrv, int checksig)
336{
337 u16 bootseg = 0x07c0;
338
339 // Read sector
340 struct bregs br;
341 memset(&br, 0, sizeof(br));
342 br.dl = bootdrv;
343 br.es = bootseg;
344 br.ah = 2;
345 br.al = 1;
346 br.cl = 1;
347 call16_int(0x13, &br);
348
349 if (br.flags & F_CF) {
350 printf("Boot failed: could not read the boot disk\n\n");
351 return;
352 }
353
354 if (checksig) {
355 struct mbr_s *mbr = (void*)0;
356 if (GET_FARVAR(bootseg, mbr->signature) != MBR_SIGNATURE) {
357 printf("Boot failed: not a bootable disk\n\n");
358 return;
359 }
360 }
361
362 /* Canonicalize bootseg:bootip */
363 u16 bootip = (bootseg & 0x0fff) << 4;
364 bootseg &= 0xf000;
365
366 call_boot_entry(bootseg, bootip, bootdrv);
367}
368
369// Boot from a CD-ROM
370static void
Kevin O'Connor67823442009-04-13 14:14:51 -0400371boot_cdrom(struct ipl_entry_s *ie)
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500372{
373 if (! CONFIG_CDROM_BOOT)
374 return;
Kevin O'Connor67823442009-04-13 14:14:51 -0400375 int status = cdrom_boot(ie->subchoice);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500376 if (status) {
377 printf("Boot failed: Could not read from CDROM (code %04x)\n", status);
378 return;
379 }
380
381 u16 ebda_seg = get_ebda_seg();
Kevin O'Connor669e6442009-08-11 22:36:30 -0400382 u8 bootdrv = GET_EBDA2(ebda_seg, cdemu.emulated_extdrive);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500383 u16 bootseg = GET_EBDA2(ebda_seg, cdemu.load_segment);
384 /* Canonicalize bootseg:bootip */
385 u16 bootip = (bootseg & 0x0fff) << 4;
386 bootseg &= 0xf000;
387
388 call_boot_entry(bootseg, bootip, bootdrv);
389}
390
Kevin O'Connore8f00ee2009-07-04 04:04:36 -0400391// Boot from a CBFS payload
Kevin O'Connor67823442009-04-13 14:14:51 -0400392static void
393boot_cbfs(struct ipl_entry_s *ie)
394{
395 if (! CONFIG_COREBOOT_FLASH)
396 return;
Kevin O'Connor1f836252009-08-16 20:17:35 -0400397 int count = ie->subchoice;
398 struct cbfs_file *file;
399 for (;;) {
400 file = cbfs_findprefix("img/", file);
401 if (!file)
402 return;
403 if (count--)
404 continue;
405 cbfs_run_payload(file);
406 }
Kevin O'Connor67823442009-04-13 14:14:51 -0400407}
408
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500409static void
410do_boot(u16 seq_nr)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500411{
Kevin O'Connor40967022008-07-21 22:23:05 -0400412 if (! CONFIG_BOOT)
Kevin O'Connore07e18e2009-02-08 17:07:29 -0500413 panic("Boot support not compiled in.\n");
Kevin O'Connor40967022008-07-21 22:23:05 -0400414
Kevin O'Connorc659fde2008-12-28 23:43:20 -0500415 u32 bootdev = IPL.bootorder;
Kevin O'Connor840c5342008-03-29 14:04:34 -0400416 bootdev >>= 4 * seq_nr;
417 bootdev &= 0xf;
Kevin O'Connore0113c92008-04-05 15:51:12 -0400418
Kevin O'Connorabc75972008-05-18 00:20:53 -0400419 /* Translate bootdev to an IPL table offset by subtracting 1 */
Kevin O'Connor840c5342008-03-29 14:04:34 -0400420 bootdev -= 1;
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500421
Kevin O'Connor0a924122009-02-08 19:43:47 -0500422 if (bootdev >= IPL.bevcount) {
Kevin O'Connorff8c1412009-04-18 17:02:41 -0400423 printf("No bootable device.\n");
424 // Loop with irqs enabled - this allows ctrl+alt+delete to work.
425 for (;;)
426 usleep(1000000);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500427 }
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500428
429 /* Do the loading, and set up vector as a far pointer to the boot
430 * address, and bootdrv as the boot drive */
Kevin O'Connor0a924122009-02-08 19:43:47 -0500431 struct ipl_entry_s *ie = &IPL.bev[bootdev];
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500432 char desc[33];
433 printf("Booting from %s...\n"
434 , strtcpy(desc, ie->description, ARRAY_SIZE(desc)));
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500435
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500436 switch(ie->type) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400437 case IPL_TYPE_FLOPPY:
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500438 boot_disk(0x00, IPL.checkfloppysig);
439 break;
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400440 case IPL_TYPE_HARDDISK:
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500441 boot_disk(0x80, 1);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500442 break;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500443 case IPL_TYPE_CDROM:
Kevin O'Connor67823442009-04-13 14:14:51 -0400444 boot_cdrom(ie);
445 break;
446 case IPL_TYPE_CBFS:
447 boot_cbfs(ie);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500448 break;
449 case IPL_TYPE_BEV:
450 call_boot_entry(ie->vector >> 16, ie->vector & 0xffff, 0);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500451 break;
Kevin O'Connor180a9592008-03-04 22:50:53 -0500452 }
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500453
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500454 // Boot failed: invoke the boot recovery function
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400455 struct bregs br;
456 memset(&br, 0, sizeof(br));
457 call16_int(0x18, &br);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500458}
459
460// Boot Failure recovery: try the next device.
Kevin O'Connor44eeaf12008-07-06 10:14:49 -0400461void VISIBLE32
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500462handle_18()
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500463{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400464 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400465 debug_enter(NULL, DEBUG_HDL_18);
Kevin O'Connor08815372008-12-29 21:16:31 -0500466 u16 ebda_seg = get_ebda_seg();
467 u16 seq = GET_EBDA2(ebda_seg, boot_sequence) + 1;
468 SET_EBDA2(ebda_seg, boot_sequence, seq);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400469 do_boot(seq);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500470}
471
472// INT 19h Boot Load Service Entry Point
Kevin O'Connor44eeaf12008-07-06 10:14:49 -0400473void VISIBLE32
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500474handle_19()
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500475{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400476 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400477 debug_enter(NULL, DEBUG_HDL_19);
Kevin O'Connor08815372008-12-29 21:16:31 -0500478 SET_EBDA(boot_sequence, 0);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400479 do_boot(0);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500480}