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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//
Kevin O'Connorcadaf0e2010-07-26 23:47:26 -04003// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05004// 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'Connor10ad7992009-10-24 11:06:08 -04008#include "util.h" // dprintf
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'Connorf13a1802010-12-29 11:52:33 -050013#include "boot.h" // func defs
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050014#include "cmos.h" // inb_cmos
Kevin O'Connorf13a1802010-12-29 11:52:33 -050015#include "paravirt.h" // romfile_loadfile
Kevin O'Connor8bf55032011-01-01 11:00:42 -050016#include "pci.h" //pci_bdf_to_*
Kevin O'Connorc659fde2008-12-28 23:43:20 -050017
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050018
19/****************************************************************
Kevin O'Connor031ef552010-12-27 19:26:57 -050020 * Boot priority ordering
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050021 ****************************************************************/
22
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050023static char **Bootorder;
24static int BootorderCount;
25
Kevin O'Connord1a17462010-12-24 11:17:03 -050026static void
27loadBootOrder(void)
28{
29 char *f = romfile_loadfile("bootorder", NULL);
30 if (!f)
31 return;
32
Kevin O'Connor8bf55032011-01-01 11:00:42 -050033 int i = 0;
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050034 BootorderCount = 1;
Kevin O'Connord1a17462010-12-24 11:17:03 -050035 while (f[i]) {
36 if (f[i] == '\n')
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050037 BootorderCount++;
Kevin O'Connord1a17462010-12-24 11:17:03 -050038 i++;
39 }
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050040 Bootorder = malloc_tmphigh(BootorderCount*sizeof(char*));
41 if (!Bootorder) {
Kevin O'Connord1a17462010-12-24 11:17:03 -050042 warn_noalloc();
43 free(f);
44 return;
45 }
46
47 dprintf(3, "boot order:\n");
48 i = 0;
49 do {
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050050 Bootorder[i] = f;
Kevin O'Connord1a17462010-12-24 11:17:03 -050051 f = strchr(f, '\n');
Kevin O'Connor8bf55032011-01-01 11:00:42 -050052 if (f)
53 *(f++) = '\0';
54 dprintf(3, "%d: %s\n", i+1, Bootorder[i]);
55 i++;
56 } while (f);
57}
58
59// See if 'str' starts with 'glob' - if glob contains an '*' character
60// it will match any number of characters in str that aren't a '/' or
61// the next glob character.
62static char *
63glob_prefix(const char *glob, const char *str)
64{
65 for (;;) {
66 if (!*glob && (!*str || *str == '/'))
67 return (char*)str;
68 if (*glob == '*') {
69 if (!*str || *str == '/' || *str == glob[1])
70 glob++;
71 else
72 str++;
73 continue;
Kevin O'Connord1a17462010-12-24 11:17:03 -050074 }
Kevin O'Connor8bf55032011-01-01 11:00:42 -050075 if (*glob != *str)
76 return NULL;
77 glob++;
78 str++;
79 }
80}
81
82// Search the bootorder list for the given glob pattern.
83static int
84find_prio(const char *glob)
85{
86 dprintf(1, "Searching bootorder for: %s\n", glob);
87 int i;
88 for (i = 0; i < BootorderCount; i++)
89 if (glob_prefix(glob, Bootorder[i]))
90 return i+1;
91 return -1;
92}
93
94#define FW_PCI_DOMAIN "/pci@i0cf8"
95
96static char *
97build_pci_path(char *buf, int max, const char *devname, int bdf)
98{
99 // Build the string path of a bdf - for example: /pci@i0cf8/isa@1,2
100 char *p = buf;
101 int bus = pci_bdf_to_bus(bdf);
102 if (bus)
103 // XXX - this isn't the correct path syntax
104 p += snprintf(p, max, "/bus%x", bus);
105
106 int dev = pci_bdf_to_dev(bdf), fn = pci_bdf_to_fn(bdf);
107 p += snprintf(p, buf+max-p, "%s/%s@%x", FW_PCI_DOMAIN, devname, dev);
108 if (fn)
109 p += snprintf(p, buf+max-p, ",%x", fn);
110 return p;
Kevin O'Connord1a17462010-12-24 11:17:03 -0500111}
112
Kevin O'Connor031ef552010-12-27 19:26:57 -0500113int bootprio_find_pci_device(int bdf)
114{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500115 // Find pci device - for example: /pci@i0cf8/ethernet@5
116 char desc[256];
117 build_pci_path(desc, sizeof(desc), "*", bdf);
118 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500119}
120
121int bootprio_find_ata_device(int bdf, int chanid, int slave)
122{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500123 if (bdf == -1)
124 // support only pci machine for now
125 return -1;
126 // Find ata drive - for example: /pci@i0cf8/ide@1,1/drive@1/disk@0
127 char desc[256], *p;
128 p = build_pci_path(desc, sizeof(desc), "*", bdf);
129 snprintf(p, desc+sizeof(desc)-p, "/drive@%x/disk@%x", chanid, slave);
130 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500131}
132
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500133int bootprio_find_fdc_device(int bdf, int port, int fdid)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500134{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500135 if (bdf == -1)
136 // support only pci machine for now
137 return -1;
138 // Find floppy - for example: /pci@i0cf8/isa@1/fdc@03f1/floppy@0
139 char desc[256], *p;
140 p = build_pci_path(desc, sizeof(desc), "isa", bdf);
141 snprintf(p, desc+sizeof(desc)-p, "/fdc@%04x/floppy@%x", port, fdid);
142 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500143}
144
145int bootprio_find_pci_rom(int bdf, int instance)
146{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500147 // Find pci rom - for example: /pci@i0cf8/scsi@3:rom2
148 char desc[256], *p;
149 p = build_pci_path(desc, sizeof(desc), "*", bdf);
150 if (instance)
151 snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
152 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500153}
154
155int bootprio_find_named_rom(const char *name, int instance)
156{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500157 // Find named rom - for example: /rom@genroms/linuxboot.bin
158 char desc[256], *p;
159 p = desc + snprintf(desc, sizeof(desc), "/rom@%s", name);
160 if (instance)
161 snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
162 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500163}
164
165
166/****************************************************************
167 * Boot setup
168 ****************************************************************/
169
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500170static int CheckFloppySig = 1;
171
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500172#define DEFAULT_PRIO 9999
173
174static int DefaultFloppyPrio = 101;
175static int DefaultCDPrio = 102;
176static int DefaultHDPrio = 103;
177static int DefaultBEVPrio = 104;
178
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500179void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500180boot_setup(void)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500181{
182 if (! CONFIG_BOOT)
183 return;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500184
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500185 SET_EBDA(boot_sequence, 0xffff);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500186
187 if (!CONFIG_COREBOOT) {
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500188 // On emulators, get boot order from nvram.
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500189 if (inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1)
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500190 CheckFloppySig = 0;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500191 u32 bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500192 | ((inb_cmos(CMOS_BIOS_BOOTFLAG1) & 0xf0) << 4));
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500193 DefaultFloppyPrio = DefaultCDPrio = DefaultHDPrio
194 = DefaultBEVPrio = DEFAULT_PRIO;
195 int i;
196 for (i=101; i<104; i++) {
197 u32 val = bootorder & 0x0f;
198 bootorder >>= 4;
199 switch (val) {
200 case 1: DefaultFloppyPrio = i; break;
201 case 2: DefaultHDPrio = i; break;
202 case 3: DefaultCDPrio = i; break;
203 case 4: DefaultBEVPrio = i; break;
204 }
205 }
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500206 }
Gleb Natapovb9a75912010-12-23 11:29:38 +0200207
Kevin O'Connord1a17462010-12-24 11:17:03 -0500208 loadBootOrder();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500209}
210
Kevin O'Connord1a17462010-12-24 11:17:03 -0500211
212/****************************************************************
Kevin O'Connor031ef552010-12-27 19:26:57 -0500213 * BootList handling
Kevin O'Connord1a17462010-12-24 11:17:03 -0500214 ****************************************************************/
215
Kevin O'Connor031ef552010-12-27 19:26:57 -0500216struct bootentry_s {
217 int type;
218 union {
219 u32 data;
220 struct segoff_s vector;
221 struct drive_s *drive;
222 };
223 int priority;
224 const char *description;
225 struct bootentry_s *next;
226};
Kevin O'Connor031ef552010-12-27 19:26:57 -0500227static struct bootentry_s *BootList;
228
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500229#define IPL_TYPE_FLOPPY 0x01
230#define IPL_TYPE_HARDDISK 0x02
231#define IPL_TYPE_CDROM 0x03
232#define IPL_TYPE_CBFS 0x20
233#define IPL_TYPE_BEV 0x80
234#define IPL_TYPE_BCV 0x81
235
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500236static void
237bootentry_add(int type, int prio, u32 data, const char *desc)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500238{
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500239 if (! CONFIG_BOOT)
240 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500241 struct bootentry_s *be = malloc_tmp(sizeof(*be));
242 if (!be) {
243 warn_noalloc();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500244 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500245 }
246 be->type = type;
247 be->priority = prio;
248 be->data = data;
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500249 be->description = desc ?: "?";
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500250 dprintf(3, "Registering bootable: %s (type:%d prio:%d data:%x)\n"
251 , be->description, type, prio, data);
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500252
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500253 // Add entry in sorted order.
254 struct bootentry_s **pprev;
255 for (pprev = &BootList; *pprev; pprev = &(*pprev)->next) {
256 struct bootentry_s *pos = *pprev;
257 if (be->priority < pos->priority)
258 break;
259 if (be->priority > pos->priority)
260 continue;
261 if (be->type < pos->type)
262 break;
263 if (be->type > pos->type)
264 continue;
265 if (be->type <= IPL_TYPE_CDROM
266 && (be->drive->type < pos->drive->type
267 || (be->drive->type == pos->drive->type
268 && be->drive->cntl_id < pos->drive->cntl_id)))
269 break;
270 }
271 be->next = *pprev;
272 *pprev = be;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500273}
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500274
Kevin O'Connor031ef552010-12-27 19:26:57 -0500275// Return the given priority if it's set - defaultprio otherwise.
276static inline int defPrio(int priority, int defaultprio) {
277 return (priority < 0) ? defaultprio : priority;
278}
279
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500280// Add a BEV vector for a given pnp compatible option rom.
Gleb Natapov4c90a202010-12-07 13:50:54 +0200281void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500282boot_add_bev(u16 seg, u16 bev, u16 desc, int prio)
Gleb Natapov4c90a202010-12-07 13:50:54 +0200283{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500284 bootentry_add(IPL_TYPE_BEV, defPrio(prio, DefaultBEVPrio)
285 , SEGOFF(seg, bev).segoff
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500286 , desc ? MAKE_FLATPTR(seg, desc) : "Unknown");
287 DefaultBEVPrio = DEFAULT_PRIO;
Gleb Natapov4c90a202010-12-07 13:50:54 +0200288}
289
Kevin O'Connor0a924122009-02-08 19:43:47 -0500290// Add a bcv entry for an expansion card harddrive or legacy option rom
291void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500292boot_add_bcv(u16 seg, u16 ip, u16 desc, int prio)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500293{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500294 bootentry_add(IPL_TYPE_BCV, defPrio(prio, DEFAULT_PRIO)
295 , SEGOFF(seg, ip).segoff
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500296 , desc ? MAKE_FLATPTR(seg, desc) : "Legacy option rom");
Kevin O'Connor0a924122009-02-08 19:43:47 -0500297}
298
Kevin O'Connor0a924122009-02-08 19:43:47 -0500299void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500300boot_add_floppy(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500301{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500302 bootentry_add(IPL_TYPE_FLOPPY, defPrio(prio, DefaultFloppyPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500303 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500304}
Kevin O'Connor0a924122009-02-08 19:43:47 -0500305
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500306void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500307boot_add_hd(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500308{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500309 bootentry_add(IPL_TYPE_HARDDISK, defPrio(prio, DefaultHDPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500310 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500311}
312
313void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500314boot_add_cd(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500315{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500316 bootentry_add(IPL_TYPE_CDROM, defPrio(prio, DefaultCDPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500317 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500318}
319
320// Add a CBFS payload entry
321void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500322boot_add_cbfs(void *data, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500323{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500324 bootentry_add(IPL_TYPE_CBFS, defPrio(prio, DEFAULT_PRIO), (u32)data, desc);
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500325}
326
327
328/****************************************************************
Kevin O'Connor0a924122009-02-08 19:43:47 -0500329 * Boot menu and BCV execution
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500330 ****************************************************************/
331
Kevin O'Connor0a924122009-02-08 19:43:47 -0500332// Show IPL option menu.
333static void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500334interactive_bootmenu(void)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500335{
Kevin O'Connore7cc7642009-10-04 10:05:16 -0400336 if (! CONFIG_BOOTMENU || ! qemu_cfg_show_boot_menu())
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500337 return;
338
339 while (get_keystroke(0) >= 0)
340 ;
341
342 printf("Press F12 for boot menu.\n\n");
343
Kevin O'Connor9a01a9c2010-08-25 21:07:48 -0400344 enable_bootsplash();
Kevin O'Connor217d3632009-04-29 22:00:21 -0400345 int scan_code = get_keystroke(CONFIG_BOOTMENU_WAIT);
Kevin O'Connor9a01a9c2010-08-25 21:07:48 -0400346 disable_bootsplash();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500347 if (scan_code != 0x86)
348 /* not F12 */
349 return;
350
351 while (get_keystroke(0) >= 0)
352 ;
353
354 printf("Select boot device:\n\n");
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400355 wait_threads();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500356
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500357 // Show menu items
358 struct bootentry_s *pos = BootList;
359 int maxmenu = 0;
360 while (pos) {
361 char desc[60];
362 maxmenu++;
363 printf("%d. %s\n", maxmenu
364 , strtcpy(desc, pos->description, ARRAY_SIZE(desc)));
365 pos = pos->next;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500366 }
367
Kevin O'Connor551caa22010-12-29 13:25:18 -0500368 // Get key press
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500369 for (;;) {
370 scan_code = get_keystroke(1000);
Kevin O'Connor551caa22010-12-29 13:25:18 -0500371 if (scan_code >= 1 && scan_code <= maxmenu+1)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500372 break;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500373 }
374 printf("\n");
Kevin O'Connor551caa22010-12-29 13:25:18 -0500375 if (scan_code == 0x01)
376 // ESC
377 return;
378
379 // Find entry and make top priority.
380 int choice = scan_code - 1;
381 struct bootentry_s **pprev = &BootList;
382 while (--choice)
383 pprev = &(*pprev)->next;
384 pos = *pprev;
385 *pprev = pos->next;
386 pos->next = BootList;
387 BootList = pos;
388 pos->priority = 0;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500389}
390
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500391// BEV (Boot Execution Vector) list
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500392struct bev_s {
393 int type;
394 u32 vector;
395};
396static struct bev_s BEV[20];
397static int BEVCount;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500398static int HaveHDBoot, HaveFDBoot;
399
Kevin O'Connor0a924122009-02-08 19:43:47 -0500400static void
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500401add_bev(int type, u32 vector)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500402{
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500403 if (type == IPL_TYPE_HARDDISK && HaveHDBoot++)
404 return;
405 if (type == IPL_TYPE_FLOPPY && HaveFDBoot++)
406 return;
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500407 if (BEVCount >= ARRAY_SIZE(BEV))
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500408 return;
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500409 struct bev_s *bev = &BEV[BEVCount++];
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500410 bev->type = type;
411 bev->vector = vector;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500412}
413
414// Prepare for boot - show menu and run bcvs.
415void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500416boot_prep(void)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500417{
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400418 if (! CONFIG_BOOT) {
419 wait_threads();
Kevin O'Connor0a924122009-02-08 19:43:47 -0500420 return;
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400421 }
Kevin O'Connor0a924122009-02-08 19:43:47 -0500422
Kevin O'Connora5826b52009-10-24 17:57:29 -0400423 // XXX - show available drives?
424
Kevin O'Connor0a924122009-02-08 19:43:47 -0500425 // Allow user to modify BCV/IPL order.
426 interactive_bootmenu();
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400427 wait_threads();
Kevin O'Connor0a924122009-02-08 19:43:47 -0500428
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500429 // Map drives and populate BEV list
430 struct bootentry_s *pos = BootList;
431 while (pos) {
432 switch (pos->type) {
433 case IPL_TYPE_BCV:
434 call_bcv(pos->vector.seg, pos->vector.offset);
435 add_bev(IPL_TYPE_HARDDISK, 0);
436 break;
437 case IPL_TYPE_FLOPPY:
438 map_floppy_drive(pos->drive);
439 add_bev(IPL_TYPE_FLOPPY, 0);
440 break;
441 case IPL_TYPE_HARDDISK:
442 map_hd_drive(pos->drive);
443 add_bev(IPL_TYPE_HARDDISK, 0);
444 break;
445 case IPL_TYPE_CDROM:
446 map_cd_drive(pos->drive);
447 // NO BREAK
448 default:
449 add_bev(pos->type, pos->data);
450 break;
451 }
452 pos = pos->next;
453 }
Kevin O'Connorafd05202009-08-16 12:21:44 -0400454
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500455 // If nothing added a floppy/hd boot - add it manually.
456 add_bev(IPL_TYPE_FLOPPY, 0);
457 add_bev(IPL_TYPE_HARDDISK, 0);
Kevin O'Connor0a924122009-02-08 19:43:47 -0500458}
459
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500460
461/****************************************************************
462 * Boot code (int 18/19)
463 ****************************************************************/
464
Kevin O'Connor0a924122009-02-08 19:43:47 -0500465// Jump to a bootup entry point.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500466static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500467call_boot_entry(struct segoff_s bootsegip, u8 bootdrv)
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500468{
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500469 dprintf(1, "Booting from %04x:%04x\n", bootsegip.seg, bootsegip.offset);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500470 struct bregs br;
471 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400472 br.flags = F_IF;
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500473 br.code = bootsegip;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500474 // Set the magic number in ax and the boot drive in dl.
475 br.dl = bootdrv;
476 br.ax = 0xaa55;
477 call16(&br);
478}
479
480// Boot from a disk (either floppy or harddrive)
481static void
482boot_disk(u8 bootdrv, int checksig)
483{
484 u16 bootseg = 0x07c0;
485
486 // Read sector
487 struct bregs br;
488 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400489 br.flags = F_IF;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500490 br.dl = bootdrv;
491 br.es = bootseg;
492 br.ah = 2;
493 br.al = 1;
494 br.cl = 1;
495 call16_int(0x13, &br);
496
497 if (br.flags & F_CF) {
498 printf("Boot failed: could not read the boot disk\n\n");
499 return;
500 }
501
502 if (checksig) {
503 struct mbr_s *mbr = (void*)0;
504 if (GET_FARVAR(bootseg, mbr->signature) != MBR_SIGNATURE) {
505 printf("Boot failed: not a bootable disk\n\n");
506 return;
507 }
508 }
509
510 /* Canonicalize bootseg:bootip */
511 u16 bootip = (bootseg & 0x0fff) << 4;
512 bootseg &= 0xf000;
513
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500514 call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500515}
516
517// Boot from a CD-ROM
518static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500519boot_cdrom(struct drive_s *drive_g)
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500520{
521 if (! CONFIG_CDROM_BOOT)
522 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500523 printf("Booting from DVD/CD...\n");
Gleb Natapov4c90a202010-12-07 13:50:54 +0200524
Gleb Natapov4c90a202010-12-07 13:50:54 +0200525 int status = cdrom_boot(drive_g);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500526 if (status) {
Kevin O'Connorecbcf772010-12-29 13:26:01 -0500527 printf("Boot failed: Could not read from CDROM (code %04x)\n", status);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500528 return;
529 }
530
531 u16 ebda_seg = get_ebda_seg();
Kevin O'Connor669e6442009-08-11 22:36:30 -0400532 u8 bootdrv = GET_EBDA2(ebda_seg, cdemu.emulated_extdrive);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500533 u16 bootseg = GET_EBDA2(ebda_seg, cdemu.load_segment);
534 /* Canonicalize bootseg:bootip */
535 u16 bootip = (bootseg & 0x0fff) << 4;
536 bootseg &= 0xf000;
537
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500538 call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500539}
540
Kevin O'Connore8f00ee2009-07-04 04:04:36 -0400541// Boot from a CBFS payload
Kevin O'Connor67823442009-04-13 14:14:51 -0400542static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500543boot_cbfs(struct cbfs_file *file)
Kevin O'Connor67823442009-04-13 14:14:51 -0400544{
Kevin O'Connord9c93612010-03-20 11:00:45 -0400545 if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH)
Kevin O'Connor67823442009-04-13 14:14:51 -0400546 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500547 printf("Booting from CBFS...\n");
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500548 cbfs_run_payload(file);
Kevin O'Connor67823442009-04-13 14:14:51 -0400549}
550
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500551// Boot from a BEV entry on an optionrom.
552static void
553boot_rom(u32 vector)
554{
555 printf("Booting from ROM...\n");
556 struct segoff_s so;
557 so.segoff = vector;
558 call_boot_entry(so, 0);
559}
560
561// Determine next boot method and attempt a boot using it.
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500562static void
563do_boot(u16 seq_nr)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500564{
Kevin O'Connor40967022008-07-21 22:23:05 -0400565 if (! CONFIG_BOOT)
Kevin O'Connore07e18e2009-02-08 17:07:29 -0500566 panic("Boot support not compiled in.\n");
Kevin O'Connor40967022008-07-21 22:23:05 -0400567
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500568 if (seq_nr >= BEVCount) {
Kevin O'Connorff8c1412009-04-18 17:02:41 -0400569 printf("No bootable device.\n");
570 // Loop with irqs enabled - this allows ctrl+alt+delete to work.
571 for (;;)
Kevin O'Connor9c447c32010-05-23 10:24:22 -0400572 wait_irq();
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500573 }
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500574
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500575 // Boot the given BEV type.
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500576 struct bev_s *ie = &BEV[seq_nr];
Kevin O'Connorcadaf0e2010-07-26 23:47:26 -0400577 switch (ie->type) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400578 case IPL_TYPE_FLOPPY:
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500579 printf("Booting from Floppy...\n");
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500580 boot_disk(0x00, CheckFloppySig);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500581 break;
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400582 case IPL_TYPE_HARDDISK:
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500583 printf("Booting from Hard Disk...\n");
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500584 boot_disk(0x80, 1);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500585 break;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500586 case IPL_TYPE_CDROM:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500587 boot_cdrom((void*)ie->vector);
Kevin O'Connor67823442009-04-13 14:14:51 -0400588 break;
589 case IPL_TYPE_CBFS:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500590 boot_cbfs((void*)ie->vector);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500591 break;
592 case IPL_TYPE_BEV:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500593 boot_rom(ie->vector);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500594 break;
Kevin O'Connor180a9592008-03-04 22:50:53 -0500595 }
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500596
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500597 // Boot failed: invoke the boot recovery function
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400598 struct bregs br;
599 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400600 br.flags = F_IF;
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400601 call16_int(0x18, &br);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500602}
603
604// Boot Failure recovery: try the next device.
Kevin O'Connor52a300f2009-12-26 23:32:57 -0500605void VISIBLE32FLAT
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500606handle_18(void)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500607{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400608 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400609 debug_enter(NULL, DEBUG_HDL_18);
Kevin O'Connor08815372008-12-29 21:16:31 -0500610 u16 ebda_seg = get_ebda_seg();
611 u16 seq = GET_EBDA2(ebda_seg, boot_sequence) + 1;
612 SET_EBDA2(ebda_seg, boot_sequence, seq);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400613 do_boot(seq);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500614}
615
616// INT 19h Boot Load Service Entry Point
Kevin O'Connor52a300f2009-12-26 23:32:57 -0500617void VISIBLE32FLAT
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500618handle_19(void)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500619{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400620 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400621 debug_enter(NULL, DEBUG_HDL_19);
Kevin O'Connor08815372008-12-29 21:16:31 -0500622 SET_EBDA(boot_sequence, 0);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400623 do_boot(0);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500624}