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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{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -040029 if (!CONFIG_BOOTORDER)
30 return;
31
Kevin O'Connord1a17462010-12-24 11:17:03 -050032 char *f = romfile_loadfile("bootorder", NULL);
33 if (!f)
34 return;
35
Kevin O'Connor8bf55032011-01-01 11:00:42 -050036 int i = 0;
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050037 BootorderCount = 1;
Kevin O'Connord1a17462010-12-24 11:17:03 -050038 while (f[i]) {
39 if (f[i] == '\n')
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050040 BootorderCount++;
Kevin O'Connord1a17462010-12-24 11:17:03 -050041 i++;
42 }
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050043 Bootorder = malloc_tmphigh(BootorderCount*sizeof(char*));
44 if (!Bootorder) {
Kevin O'Connord1a17462010-12-24 11:17:03 -050045 warn_noalloc();
46 free(f);
Kevin O'Connor4d0c5922011-01-26 21:04:01 -050047 BootorderCount = 0;
Kevin O'Connord1a17462010-12-24 11:17:03 -050048 return;
49 }
50
51 dprintf(3, "boot order:\n");
52 i = 0;
53 do {
Kevin O'Connor3da2c1c2010-12-29 11:37:41 -050054 Bootorder[i] = f;
Kevin O'Connord1a17462010-12-24 11:17:03 -050055 f = strchr(f, '\n');
Kevin O'Connor8bf55032011-01-01 11:00:42 -050056 if (f)
57 *(f++) = '\0';
Kevin O'Connor9e881a32011-01-08 12:06:54 -050058 nullTrailingSpace(Bootorder[i]);
Kevin O'Connor8bf55032011-01-01 11:00:42 -050059 dprintf(3, "%d: %s\n", i+1, Bootorder[i]);
60 i++;
61 } while (f);
62}
63
64// See if 'str' starts with 'glob' - if glob contains an '*' character
65// it will match any number of characters in str that aren't a '/' or
66// the next glob character.
67static char *
68glob_prefix(const char *glob, const char *str)
69{
70 for (;;) {
71 if (!*glob && (!*str || *str == '/'))
72 return (char*)str;
73 if (*glob == '*') {
74 if (!*str || *str == '/' || *str == glob[1])
75 glob++;
76 else
77 str++;
78 continue;
Kevin O'Connord1a17462010-12-24 11:17:03 -050079 }
Kevin O'Connor8bf55032011-01-01 11:00:42 -050080 if (*glob != *str)
81 return NULL;
82 glob++;
83 str++;
84 }
85}
86
87// Search the bootorder list for the given glob pattern.
88static int
89find_prio(const char *glob)
90{
91 dprintf(1, "Searching bootorder for: %s\n", glob);
92 int i;
93 for (i = 0; i < BootorderCount; i++)
94 if (glob_prefix(glob, Bootorder[i]))
95 return i+1;
96 return -1;
97}
98
99#define FW_PCI_DOMAIN "/pci@i0cf8"
100
Kevin O'Connor659c99d2011-06-20 23:29:15 -0400101static char *
102build_pci_path(char *buf, int max, const char *devname, struct pci_device *pci)
103{
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500104 // Build the string path of a bdf - for example: /pci@i0cf8/isa@1,2
105 char *p = buf;
Kevin O'Connor659c99d2011-06-20 23:29:15 -0400106 if (pci->parent) {
107 p = build_pci_path(p, max, "pci-bridge", pci->parent);
Kevin O'Connord08eb9c2011-01-10 00:48:45 -0500108 } else {
Kevin O'Connor659c99d2011-06-20 23:29:15 -0400109 if (pci->rootbus)
110 p += snprintf(p, max, "/pci-root@%x", pci->rootbus);
Kevin O'Connord08eb9c2011-01-10 00:48:45 -0500111 p += snprintf(p, buf+max-p, "%s", FW_PCI_DOMAIN);
112 }
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500113
Kevin O'Connor659c99d2011-06-20 23:29:15 -0400114 int dev = pci_bdf_to_dev(pci->bdf), fn = pci_bdf_to_fn(pci->bdf);
Kevin O'Connord08eb9c2011-01-10 00:48:45 -0500115 p += snprintf(p, buf+max-p, "/%s@%x", devname, dev);
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500116 if (fn)
117 p += snprintf(p, buf+max-p, ",%x", fn);
118 return p;
Kevin O'Connord1a17462010-12-24 11:17:03 -0500119}
120
Kevin O'Connordc3a7d62011-07-09 14:33:56 -0400121int bootprio_find_pci_device(struct pci_device *pci)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500122{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400123 if (!CONFIG_BOOTORDER)
124 return -1;
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500125 // Find pci device - for example: /pci@i0cf8/ethernet@5
126 char desc[256];
Kevin O'Connordc3a7d62011-07-09 14:33:56 -0400127 build_pci_path(desc, sizeof(desc), "*", pci);
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500128 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500129}
130
Paolo Bonzinic5c488f2012-02-27 17:22:23 +0100131int bootprio_find_scsi_device(struct pci_device *pci, int target, int lun)
132{
133 if (!CONFIG_BOOTORDER)
134 return -1;
135 if (!pci)
136 // support only pci machine for now
137 return -1;
138 // Find scsi drive - for example: /pci@i0cf8/scsi@5/channel@0/disk@1,0
139 char desc[256], *p;
140 p = build_pci_path(desc, sizeof(desc), "*", pci);
141 snprintf(p, desc+sizeof(desc)-p, "/*@0/*@%d,%d", target, lun);
142 return find_prio(desc);
143}
144
Kevin O'Connor95b2e0c2011-07-09 14:42:11 -0400145int bootprio_find_ata_device(struct pci_device *pci, int chanid, int slave)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500146{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400147 if (!CONFIG_BOOTORDER)
148 return -1;
Kevin O'Connor95b2e0c2011-07-09 14:42:11 -0400149 if (!pci)
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500150 // support only pci machine for now
151 return -1;
152 // Find ata drive - for example: /pci@i0cf8/ide@1,1/drive@1/disk@0
153 char desc[256], *p;
Kevin O'Connor95b2e0c2011-07-09 14:42:11 -0400154 p = build_pci_path(desc, sizeof(desc), "*", pci);
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500155 snprintf(p, desc+sizeof(desc)-p, "/drive@%x/disk@%x", chanid, slave);
156 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500157}
158
Kevin O'Connor03e589c2011-07-09 14:35:37 -0400159int bootprio_find_fdc_device(struct pci_device *pci, int port, int fdid)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500160{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400161 if (!CONFIG_BOOTORDER)
162 return -1;
Kevin O'Connor03e589c2011-07-09 14:35:37 -0400163 if (!pci)
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500164 // support only pci machine for now
165 return -1;
166 // Find floppy - for example: /pci@i0cf8/isa@1/fdc@03f1/floppy@0
167 char desc[256], *p;
Kevin O'Connor03e589c2011-07-09 14:35:37 -0400168 p = build_pci_path(desc, sizeof(desc), "isa", pci);
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500169 snprintf(p, desc+sizeof(desc)-p, "/fdc@%04x/floppy@%x", port, fdid);
170 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500171}
172
Kevin O'Connorfce91892011-07-09 14:47:47 -0400173int bootprio_find_pci_rom(struct pci_device *pci, int instance)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500174{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400175 if (!CONFIG_BOOTORDER)
176 return -1;
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500177 // Find pci rom - for example: /pci@i0cf8/scsi@3:rom2
178 char desc[256], *p;
Kevin O'Connorfce91892011-07-09 14:47:47 -0400179 p = build_pci_path(desc, sizeof(desc), "*", pci);
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500180 if (instance)
181 snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
182 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500183}
184
185int bootprio_find_named_rom(const char *name, int instance)
186{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400187 if (!CONFIG_BOOTORDER)
188 return -1;
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500189 // Find named rom - for example: /rom@genroms/linuxboot.bin
190 char desc[256], *p;
191 p = desc + snprintf(desc, sizeof(desc), "/rom@%s", name);
192 if (instance)
193 snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
194 return find_prio(desc);
Kevin O'Connor031ef552010-12-27 19:26:57 -0500195}
196
Kevin O'Connor1355a882011-07-09 14:31:50 -0400197int bootprio_find_usb(struct pci_device *pci, u64 path)
Kevin O'Connorc2002a12010-12-31 14:38:10 -0500198{
Kevin O'Connor49bf57b2011-05-10 22:08:30 -0400199 if (!CONFIG_BOOTORDER)
200 return -1;
Kevin O'Connorc2002a12010-12-31 14:38:10 -0500201 // Find usb - for example: /pci@i0cf8/usb@1,2/hub@1/network@0/ethernet@0
202 int i;
203 char desc[256], *p;
Kevin O'Connor1355a882011-07-09 14:31:50 -0400204 p = build_pci_path(desc, sizeof(desc), "usb", pci);
Kevin O'Connorc2002a12010-12-31 14:38:10 -0500205 for (i=56; i>0; i-=8) {
206 int port = (path >> i) & 0xff;
207 if (port != 0xff)
Paolo Bonzini2762de02011-11-18 15:59:24 +0100208 p += snprintf(p, desc+sizeof(desc)-p, "/hub@%x", port+1);
Kevin O'Connorc2002a12010-12-31 14:38:10 -0500209 }
Paolo Bonzini2762de02011-11-18 15:59:24 +0100210 snprintf(p, desc+sizeof(desc)-p, "/*@%x", (u32)(path & 0xff)+1);
Kevin O'Connorc2002a12010-12-31 14:38:10 -0500211 return find_prio(desc);
212}
213
Kevin O'Connor031ef552010-12-27 19:26:57 -0500214
215/****************************************************************
216 * Boot setup
217 ****************************************************************/
218
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500219static int CheckFloppySig = 1;
220
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500221#define DEFAULT_PRIO 9999
222
223static int DefaultFloppyPrio = 101;
224static int DefaultCDPrio = 102;
225static int DefaultHDPrio = 103;
226static int DefaultBEVPrio = 104;
227
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500228void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500229boot_setup(void)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500230{
231 if (! CONFIG_BOOT)
232 return;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500233
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500234 SET_EBDA(boot_sequence, 0xffff);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500235
236 if (!CONFIG_COREBOOT) {
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500237 // On emulators, get boot order from nvram.
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500238 if (inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1)
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500239 CheckFloppySig = 0;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500240 u32 bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500241 | ((inb_cmos(CMOS_BIOS_BOOTFLAG1) & 0xf0) << 4));
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500242 DefaultFloppyPrio = DefaultCDPrio = DefaultHDPrio
243 = DefaultBEVPrio = DEFAULT_PRIO;
244 int i;
245 for (i=101; i<104; i++) {
246 u32 val = bootorder & 0x0f;
247 bootorder >>= 4;
248 switch (val) {
249 case 1: DefaultFloppyPrio = i; break;
250 case 2: DefaultHDPrio = i; break;
251 case 3: DefaultCDPrio = i; break;
252 case 4: DefaultBEVPrio = i; break;
253 }
254 }
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500255 }
Gleb Natapovb9a75912010-12-23 11:29:38 +0200256
Kevin O'Connord1a17462010-12-24 11:17:03 -0500257 loadBootOrder();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500258}
259
Kevin O'Connord1a17462010-12-24 11:17:03 -0500260
261/****************************************************************
Kevin O'Connor031ef552010-12-27 19:26:57 -0500262 * BootList handling
Kevin O'Connord1a17462010-12-24 11:17:03 -0500263 ****************************************************************/
264
Kevin O'Connor031ef552010-12-27 19:26:57 -0500265struct bootentry_s {
266 int type;
267 union {
268 u32 data;
269 struct segoff_s vector;
270 struct drive_s *drive;
271 };
272 int priority;
273 const char *description;
274 struct bootentry_s *next;
275};
Kevin O'Connor031ef552010-12-27 19:26:57 -0500276static struct bootentry_s *BootList;
277
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500278#define IPL_TYPE_FLOPPY 0x01
279#define IPL_TYPE_HARDDISK 0x02
280#define IPL_TYPE_CDROM 0x03
281#define IPL_TYPE_CBFS 0x20
282#define IPL_TYPE_BEV 0x80
283#define IPL_TYPE_BCV 0x81
284
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500285static void
286bootentry_add(int type, int prio, u32 data, const char *desc)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500287{
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500288 if (! CONFIG_BOOT)
289 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500290 struct bootentry_s *be = malloc_tmp(sizeof(*be));
291 if (!be) {
292 warn_noalloc();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500293 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500294 }
295 be->type = type;
296 be->priority = prio;
297 be->data = data;
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500298 be->description = desc ?: "?";
Kevin O'Connor8bf55032011-01-01 11:00:42 -0500299 dprintf(3, "Registering bootable: %s (type:%d prio:%d data:%x)\n"
300 , be->description, type, prio, data);
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500301
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500302 // Add entry in sorted order.
303 struct bootentry_s **pprev;
304 for (pprev = &BootList; *pprev; pprev = &(*pprev)->next) {
305 struct bootentry_s *pos = *pprev;
306 if (be->priority < pos->priority)
307 break;
308 if (be->priority > pos->priority)
309 continue;
310 if (be->type < pos->type)
311 break;
312 if (be->type > pos->type)
313 continue;
314 if (be->type <= IPL_TYPE_CDROM
315 && (be->drive->type < pos->drive->type
316 || (be->drive->type == pos->drive->type
317 && be->drive->cntl_id < pos->drive->cntl_id)))
318 break;
319 }
320 be->next = *pprev;
321 *pprev = be;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500322}
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500323
Kevin O'Connor031ef552010-12-27 19:26:57 -0500324// Return the given priority if it's set - defaultprio otherwise.
325static inline int defPrio(int priority, int defaultprio) {
326 return (priority < 0) ? defaultprio : priority;
327}
328
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500329// Add a BEV vector for a given pnp compatible option rom.
Gleb Natapov4c90a202010-12-07 13:50:54 +0200330void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500331boot_add_bev(u16 seg, u16 bev, u16 desc, int prio)
Gleb Natapov4c90a202010-12-07 13:50:54 +0200332{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500333 bootentry_add(IPL_TYPE_BEV, defPrio(prio, DefaultBEVPrio)
334 , SEGOFF(seg, bev).segoff
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500335 , desc ? MAKE_FLATPTR(seg, desc) : "Unknown");
336 DefaultBEVPrio = DEFAULT_PRIO;
Gleb Natapov4c90a202010-12-07 13:50:54 +0200337}
338
Kevin O'Connor0a924122009-02-08 19:43:47 -0500339// Add a bcv entry for an expansion card harddrive or legacy option rom
340void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500341boot_add_bcv(u16 seg, u16 ip, u16 desc, int prio)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500342{
Kevin O'Connor88e745e2012-01-14 11:58:14 -0500343 bootentry_add(IPL_TYPE_BCV, defPrio(prio, DefaultHDPrio)
Kevin O'Connor031ef552010-12-27 19:26:57 -0500344 , SEGOFF(seg, ip).segoff
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500345 , desc ? MAKE_FLATPTR(seg, desc) : "Legacy option rom");
Kevin O'Connor0a924122009-02-08 19:43:47 -0500346}
347
Kevin O'Connor0a924122009-02-08 19:43:47 -0500348void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500349boot_add_floppy(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500350{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500351 bootentry_add(IPL_TYPE_FLOPPY, defPrio(prio, DefaultFloppyPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500352 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500353}
Kevin O'Connor0a924122009-02-08 19:43:47 -0500354
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500355void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500356boot_add_hd(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500357{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500358 bootentry_add(IPL_TYPE_HARDDISK, defPrio(prio, DefaultHDPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500359 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500360}
361
362void
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500363boot_add_cd(struct drive_s *drive_g, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500364{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500365 bootentry_add(IPL_TYPE_CDROM, defPrio(prio, DefaultCDPrio)
Kevin O'Connorca2bc1c2010-12-29 21:41:19 -0500366 , (u32)drive_g, desc);
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500367}
368
369// Add a CBFS payload entry
370void
Kevin O'Connor031ef552010-12-27 19:26:57 -0500371boot_add_cbfs(void *data, const char *desc, int prio)
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500372{
Kevin O'Connor031ef552010-12-27 19:26:57 -0500373 bootentry_add(IPL_TYPE_CBFS, defPrio(prio, DEFAULT_PRIO), (u32)data, desc);
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500374}
375
376
377/****************************************************************
Kevin O'Connor0a924122009-02-08 19:43:47 -0500378 * Boot menu and BCV execution
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500379 ****************************************************************/
380
Kevin O'Connor73023002011-07-05 20:34:34 -0400381#define DEFAULT_BOOTMENU_WAIT 2500
382
Kevin O'Connor0a924122009-02-08 19:43:47 -0500383// Show IPL option menu.
384static void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500385interactive_bootmenu(void)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500386{
Kevin O'Connore7cc7642009-10-04 10:05:16 -0400387 if (! CONFIG_BOOTMENU || ! qemu_cfg_show_boot_menu())
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500388 return;
389
390 while (get_keystroke(0) >= 0)
391 ;
392
393 printf("Press F12 for boot menu.\n\n");
394
Kevin O'Connor73023002011-07-05 20:34:34 -0400395 u32 menutime = romfile_loadint("etc/boot-menu-wait", DEFAULT_BOOTMENU_WAIT);
Kevin O'Connor9a01a9c2010-08-25 21:07:48 -0400396 enable_bootsplash();
Kevin O'Connor73023002011-07-05 20:34:34 -0400397 int scan_code = get_keystroke(menutime);
Kevin O'Connor9a01a9c2010-08-25 21:07:48 -0400398 disable_bootsplash();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500399 if (scan_code != 0x86)
400 /* not F12 */
401 return;
402
403 while (get_keystroke(0) >= 0)
404 ;
405
406 printf("Select boot device:\n\n");
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400407 wait_threads();
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500408
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500409 // Show menu items
410 struct bootentry_s *pos = BootList;
411 int maxmenu = 0;
412 while (pos) {
413 char desc[60];
414 maxmenu++;
415 printf("%d. %s\n", maxmenu
416 , strtcpy(desc, pos->description, ARRAY_SIZE(desc)));
417 pos = pos->next;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500418 }
419
Kevin O'Connor551caa22010-12-29 13:25:18 -0500420 // Get key press
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500421 for (;;) {
422 scan_code = get_keystroke(1000);
Kevin O'Connor551caa22010-12-29 13:25:18 -0500423 if (scan_code >= 1 && scan_code <= maxmenu+1)
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500424 break;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500425 }
426 printf("\n");
Kevin O'Connor551caa22010-12-29 13:25:18 -0500427 if (scan_code == 0x01)
428 // ESC
429 return;
430
431 // Find entry and make top priority.
432 int choice = scan_code - 1;
433 struct bootentry_s **pprev = &BootList;
434 while (--choice)
435 pprev = &(*pprev)->next;
436 pos = *pprev;
437 *pprev = pos->next;
438 pos->next = BootList;
439 BootList = pos;
440 pos->priority = 0;
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500441}
442
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500443// BEV (Boot Execution Vector) list
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500444struct bev_s {
445 int type;
446 u32 vector;
447};
448static struct bev_s BEV[20];
449static int BEVCount;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500450static int HaveHDBoot, HaveFDBoot;
451
Kevin O'Connor0a924122009-02-08 19:43:47 -0500452static void
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500453add_bev(int type, u32 vector)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500454{
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500455 if (type == IPL_TYPE_HARDDISK && HaveHDBoot++)
456 return;
457 if (type == IPL_TYPE_FLOPPY && HaveFDBoot++)
458 return;
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500459 if (BEVCount >= ARRAY_SIZE(BEV))
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500460 return;
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500461 struct bev_s *bev = &BEV[BEVCount++];
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500462 bev->type = type;
463 bev->vector = vector;
Kevin O'Connor0a924122009-02-08 19:43:47 -0500464}
465
466// Prepare for boot - show menu and run bcvs.
467void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500468boot_prep(void)
Kevin O'Connor0a924122009-02-08 19:43:47 -0500469{
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400470 if (! CONFIG_BOOT) {
471 wait_threads();
Kevin O'Connor0a924122009-02-08 19:43:47 -0500472 return;
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400473 }
Kevin O'Connor0a924122009-02-08 19:43:47 -0500474
Kevin O'Connora5826b52009-10-24 17:57:29 -0400475 // XXX - show available drives?
476
Kevin O'Connor0a924122009-02-08 19:43:47 -0500477 // Allow user to modify BCV/IPL order.
478 interactive_bootmenu();
Kevin O'Connore438b0c2010-05-01 12:20:33 -0400479 wait_threads();
Kevin O'Connor0a924122009-02-08 19:43:47 -0500480
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500481 // Map drives and populate BEV list
482 struct bootentry_s *pos = BootList;
483 while (pos) {
484 switch (pos->type) {
485 case IPL_TYPE_BCV:
486 call_bcv(pos->vector.seg, pos->vector.offset);
487 add_bev(IPL_TYPE_HARDDISK, 0);
488 break;
489 case IPL_TYPE_FLOPPY:
490 map_floppy_drive(pos->drive);
491 add_bev(IPL_TYPE_FLOPPY, 0);
492 break;
493 case IPL_TYPE_HARDDISK:
494 map_hd_drive(pos->drive);
495 add_bev(IPL_TYPE_HARDDISK, 0);
496 break;
497 case IPL_TYPE_CDROM:
498 map_cd_drive(pos->drive);
499 // NO BREAK
500 default:
501 add_bev(pos->type, pos->data);
502 break;
503 }
504 pos = pos->next;
505 }
Kevin O'Connorafd05202009-08-16 12:21:44 -0400506
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500507 // If nothing added a floppy/hd boot - add it manually.
508 add_bev(IPL_TYPE_FLOPPY, 0);
509 add_bev(IPL_TYPE_HARDDISK, 0);
Kevin O'Connor0a924122009-02-08 19:43:47 -0500510}
511
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -0500512
513/****************************************************************
514 * Boot code (int 18/19)
515 ****************************************************************/
516
Kevin O'Connor0a924122009-02-08 19:43:47 -0500517// Jump to a bootup entry point.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500518static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500519call_boot_entry(struct segoff_s bootsegip, u8 bootdrv)
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500520{
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500521 dprintf(1, "Booting from %04x:%04x\n", bootsegip.seg, bootsegip.offset);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500522 struct bregs br;
523 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400524 br.flags = F_IF;
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500525 br.code = bootsegip;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500526 // Set the magic number in ax and the boot drive in dl.
527 br.dl = bootdrv;
528 br.ax = 0xaa55;
529 call16(&br);
530}
531
532// Boot from a disk (either floppy or harddrive)
533static void
534boot_disk(u8 bootdrv, int checksig)
535{
536 u16 bootseg = 0x07c0;
537
538 // Read sector
539 struct bregs br;
540 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400541 br.flags = F_IF;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500542 br.dl = bootdrv;
543 br.es = bootseg;
544 br.ah = 2;
545 br.al = 1;
546 br.cl = 1;
547 call16_int(0x13, &br);
548
549 if (br.flags & F_CF) {
550 printf("Boot failed: could not read the boot disk\n\n");
551 return;
552 }
553
554 if (checksig) {
555 struct mbr_s *mbr = (void*)0;
556 if (GET_FARVAR(bootseg, mbr->signature) != MBR_SIGNATURE) {
557 printf("Boot failed: not a bootable disk\n\n");
558 return;
559 }
560 }
561
562 /* Canonicalize bootseg:bootip */
563 u16 bootip = (bootseg & 0x0fff) << 4;
564 bootseg &= 0xf000;
565
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500566 call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500567}
568
569// Boot from a CD-ROM
570static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500571boot_cdrom(struct drive_s *drive_g)
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500572{
573 if (! CONFIG_CDROM_BOOT)
574 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500575 printf("Booting from DVD/CD...\n");
Gleb Natapov4c90a202010-12-07 13:50:54 +0200576
Gleb Natapov4c90a202010-12-07 13:50:54 +0200577 int status = cdrom_boot(drive_g);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500578 if (status) {
Kevin O'Connorecbcf772010-12-29 13:26:01 -0500579 printf("Boot failed: Could not read from CDROM (code %04x)\n", status);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500580 return;
581 }
582
583 u16 ebda_seg = get_ebda_seg();
Kevin O'Connor669e6442009-08-11 22:36:30 -0400584 u8 bootdrv = GET_EBDA2(ebda_seg, cdemu.emulated_extdrive);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500585 u16 bootseg = GET_EBDA2(ebda_seg, cdemu.load_segment);
586 /* Canonicalize bootseg:bootip */
587 u16 bootip = (bootseg & 0x0fff) << 4;
588 bootseg &= 0xf000;
589
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500590 call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500591}
592
Kevin O'Connore8f00ee2009-07-04 04:04:36 -0400593// Boot from a CBFS payload
Kevin O'Connor67823442009-04-13 14:14:51 -0400594static void
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500595boot_cbfs(struct cbfs_file *file)
Kevin O'Connor67823442009-04-13 14:14:51 -0400596{
Kevin O'Connord9c93612010-03-20 11:00:45 -0400597 if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH)
Kevin O'Connor67823442009-04-13 14:14:51 -0400598 return;
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500599 printf("Booting from CBFS...\n");
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500600 cbfs_run_payload(file);
Kevin O'Connor67823442009-04-13 14:14:51 -0400601}
602
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500603// Boot from a BEV entry on an optionrom.
604static void
605boot_rom(u32 vector)
606{
607 printf("Booting from ROM...\n");
608 struct segoff_s so;
609 so.segoff = vector;
610 call_boot_entry(so, 0);
611}
612
613// Determine next boot method and attempt a boot using it.
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500614static void
615do_boot(u16 seq_nr)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500616{
Kevin O'Connor40967022008-07-21 22:23:05 -0400617 if (! CONFIG_BOOT)
Kevin O'Connore07e18e2009-02-08 17:07:29 -0500618 panic("Boot support not compiled in.\n");
Kevin O'Connor40967022008-07-21 22:23:05 -0400619
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500620 if (seq_nr >= BEVCount) {
Kevin O'Connorff8c1412009-04-18 17:02:41 -0400621 printf("No bootable device.\n");
622 // Loop with irqs enabled - this allows ctrl+alt+delete to work.
623 for (;;)
Kevin O'Connor9c447c32010-05-23 10:24:22 -0400624 wait_irq();
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500625 }
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500626
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500627 // Boot the given BEV type.
Kevin O'Connor7bb15842010-12-29 11:25:14 -0500628 struct bev_s *ie = &BEV[seq_nr];
Kevin O'Connorcadaf0e2010-07-26 23:47:26 -0400629 switch (ie->type) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400630 case IPL_TYPE_FLOPPY:
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500631 printf("Booting from Floppy...\n");
Kevin O'Connorbaaadb62010-12-29 11:18:04 -0500632 boot_disk(0x00, CheckFloppySig);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500633 break;
Kevin O'Connorf13b0082008-08-17 11:26:42 -0400634 case IPL_TYPE_HARDDISK:
Kevin O'Connor72eee3e2010-12-27 19:07:49 -0500635 printf("Booting from Hard Disk...\n");
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500636 boot_disk(0x80, 1);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500637 break;
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500638 case IPL_TYPE_CDROM:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500639 boot_cdrom((void*)ie->vector);
Kevin O'Connor67823442009-04-13 14:14:51 -0400640 break;
641 case IPL_TYPE_CBFS:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500642 boot_cbfs((void*)ie->vector);
Kevin O'Connor71f036d2009-02-08 16:57:22 -0500643 break;
644 case IPL_TYPE_BEV:
Kevin O'Connorf13a1802010-12-29 11:52:33 -0500645 boot_rom(ie->vector);
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500646 break;
Kevin O'Connor180a9592008-03-04 22:50:53 -0500647 }
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500648
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500649 // Boot failed: invoke the boot recovery function
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400650 struct bregs br;
651 memset(&br, 0, sizeof(br));
Kevin O'Connorf8e800d2009-09-24 21:01:16 -0400652 br.flags = F_IF;
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400653 call16_int(0x18, &br);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500654}
655
656// Boot Failure recovery: try the next device.
Kevin O'Connor52a300f2009-12-26 23:32:57 -0500657void VISIBLE32FLAT
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500658handle_18(void)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500659{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400660 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400661 debug_enter(NULL, DEBUG_HDL_18);
Kevin O'Connor08815372008-12-29 21:16:31 -0500662 u16 ebda_seg = get_ebda_seg();
663 u16 seq = GET_EBDA2(ebda_seg, boot_sequence) + 1;
664 SET_EBDA2(ebda_seg, boot_sequence, seq);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400665 do_boot(seq);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500666}
667
668// INT 19h Boot Load Service Entry Point
Kevin O'Connor52a300f2009-12-26 23:32:57 -0500669void VISIBLE32FLAT
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500670handle_19(void)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500671{
Kevin O'Connor61d6b062008-06-21 12:15:10 -0400672 debug_serial_setup();
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400673 debug_enter(NULL, DEBUG_HDL_19);
Kevin O'Connor08815372008-12-29 21:16:31 -0500674 SET_EBDA(boot_sequence, 0);
Kevin O'Connor7af49bf2008-03-09 13:46:13 -0400675 do_boot(0);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500676}