// Code to load disk image and start system boot.
//
-// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
-#include "util.h" // irq_enable
+#include "util.h" // dprintf
#include "biosvar.h" // GET_EBDA
#include "config.h" // CONFIG_*
#include "disk.h" // cdrom_boot
#include "bregs.h" // struct bregs
-#include "boot.h" // struct ipl_s
+#include "boot.h" // func defs
#include "cmos.h" // inb_cmos
+#include "paravirt.h" // romfile_loadfile
+#include "pci.h" //pci_bdf_to_*
-struct ipl_s IPL;
+
+/****************************************************************
+ * Boot priority ordering
+ ****************************************************************/
+
+static char **Bootorder;
+static int BootorderCount;
+
+static void
+loadBootOrder(void)
+{
+ if (!CONFIG_BOOTORDER)
+ return;
+
+ char *f = romfile_loadfile("bootorder", NULL);
+ if (!f)
+ return;
+
+ int i = 0;
+ BootorderCount = 1;
+ while (f[i]) {
+ if (f[i] == '\n')
+ BootorderCount++;
+ i++;
+ }
+ Bootorder = malloc_tmphigh(BootorderCount*sizeof(char*));
+ if (!Bootorder) {
+ warn_noalloc();
+ free(f);
+ BootorderCount = 0;
+ return;
+ }
+
+ dprintf(3, "boot order:\n");
+ i = 0;
+ do {
+ Bootorder[i] = f;
+ f = strchr(f, '\n');
+ if (f)
+ *(f++) = '\0';
+ nullTrailingSpace(Bootorder[i]);
+ dprintf(3, "%d: %s\n", i+1, Bootorder[i]);
+ i++;
+ } while (f);
+}
+
+// See if 'str' starts with 'glob' - if glob contains an '*' character
+// it will match any number of characters in str that aren't a '/' or
+// the next glob character.
+static char *
+glob_prefix(const char *glob, const char *str)
+{
+ for (;;) {
+ if (!*glob && (!*str || *str == '/'))
+ return (char*)str;
+ if (*glob == '*') {
+ if (!*str || *str == '/' || *str == glob[1])
+ glob++;
+ else
+ str++;
+ continue;
+ }
+ if (*glob != *str)
+ return NULL;
+ glob++;
+ str++;
+ }
+}
+
+// Search the bootorder list for the given glob pattern.
+static int
+find_prio(const char *glob)
+{
+ dprintf(1, "Searching bootorder for: %s\n", glob);
+ int i;
+ for (i = 0; i < BootorderCount; i++)
+ if (glob_prefix(glob, Bootorder[i]))
+ return i+1;
+ return -1;
+}
+
+#define FW_PCI_DOMAIN "/pci@i0cf8"
+
+static char *
+build_pci_path(char *buf, int max, const char *devname, struct pci_device *pci)
+{
+ // Build the string path of a bdf - for example: /pci@i0cf8/isa@1,2
+ char *p = buf;
+ if (pci->parent) {
+ p = build_pci_path(p, max, "pci-bridge", pci->parent);
+ } else {
+ if (pci->rootbus)
+ p += snprintf(p, max, "/pci-root@%x", pci->rootbus);
+ p += snprintf(p, buf+max-p, "%s", FW_PCI_DOMAIN);
+ }
+
+ int dev = pci_bdf_to_dev(pci->bdf), fn = pci_bdf_to_fn(pci->bdf);
+ p += snprintf(p, buf+max-p, "/%s@%x", devname, dev);
+ if (fn)
+ p += snprintf(p, buf+max-p, ",%x", fn);
+ return p;
+}
+
+int bootprio_find_pci_device(struct pci_device *pci)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ // Find pci device - for example: /pci@i0cf8/ethernet@5
+ char desc[256];
+ build_pci_path(desc, sizeof(desc), "*", pci);
+ return find_prio(desc);
+}
+
+int bootprio_find_ata_device(struct pci_device *pci, int chanid, int slave)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ if (!pci)
+ // support only pci machine for now
+ return -1;
+ // Find ata drive - for example: /pci@i0cf8/ide@1,1/drive@1/disk@0
+ char desc[256], *p;
+ p = build_pci_path(desc, sizeof(desc), "*", pci);
+ snprintf(p, desc+sizeof(desc)-p, "/drive@%x/disk@%x", chanid, slave);
+ return find_prio(desc);
+}
+
+int bootprio_find_fdc_device(struct pci_device *pci, int port, int fdid)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ if (!pci)
+ // support only pci machine for now
+ return -1;
+ // Find floppy - for example: /pci@i0cf8/isa@1/fdc@03f1/floppy@0
+ char desc[256], *p;
+ p = build_pci_path(desc, sizeof(desc), "isa", pci);
+ snprintf(p, desc+sizeof(desc)-p, "/fdc@%04x/floppy@%x", port, fdid);
+ return find_prio(desc);
+}
+
+int bootprio_find_pci_rom(struct pci_device *pci, int instance)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ // Find pci rom - for example: /pci@i0cf8/scsi@3:rom2
+ char desc[256], *p;
+ p = build_pci_path(desc, sizeof(desc), "*", pci);
+ if (instance)
+ snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
+ return find_prio(desc);
+}
+
+int bootprio_find_named_rom(const char *name, int instance)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ // Find named rom - for example: /rom@genroms/linuxboot.bin
+ char desc[256], *p;
+ p = desc + snprintf(desc, sizeof(desc), "/rom@%s", name);
+ if (instance)
+ snprintf(p, desc+sizeof(desc)-p, ":rom%d", instance);
+ return find_prio(desc);
+}
+
+int bootprio_find_usb(struct pci_device *pci, u64 path)
+{
+ if (!CONFIG_BOOTORDER)
+ return -1;
+ // Find usb - for example: /pci@i0cf8/usb@1,2/hub@1/network@0/ethernet@0
+ int i;
+ char desc[256], *p;
+ p = build_pci_path(desc, sizeof(desc), "usb", pci);
+ for (i=56; i>0; i-=8) {
+ int port = (path >> i) & 0xff;
+ if (port != 0xff)
+ p += snprintf(p, desc+sizeof(desc)-p, "/hub@%x", port+1);
+ }
+ snprintf(p, desc+sizeof(desc)-p, "/*@%x", (u32)(path & 0xff)+1);
+ return find_prio(desc);
+}
/****************************************************************
- * IPL handlers
+ * Boot setup
****************************************************************/
+static int CheckFloppySig = 1;
+
+#define DEFAULT_PRIO 9999
+
+static int DefaultFloppyPrio = 101;
+static int DefaultCDPrio = 102;
+static int DefaultHDPrio = 103;
+static int DefaultBEVPrio = 104;
+
void
-boot_setup()
+boot_setup(void)
{
if (! CONFIG_BOOT)
return;
- dprintf(3, "init boot device ordering\n");
-
- memset(&IPL, 0, sizeof(IPL));
-
- // Floppy drive
- struct ipl_entry_s *ie = &IPL.table[0];
- ie->type = IPL_TYPE_FLOPPY;
- ie->description = "Floppy";
- ie++;
-
- // First HDD
- ie->type = IPL_TYPE_HARDDISK;
- ie->description = "Hard Disk";
- ie++;
-
- // CDROM
- if (CONFIG_CDROM_BOOT) {
- ie->type = IPL_TYPE_CDROM;
- ie->description = "CD-Rom";
- ie++;
- }
- IPL.count = ie - IPL.table;
SET_EBDA(boot_sequence, 0xffff);
- if (CONFIG_COREBOOT) {
- // XXX - hardcode defaults for coreboot.
- IPL.bootorder = 0x00000231;
- IPL.checkfloppysig = 1;
- } else {
+
+ if (!CONFIG_COREBOOT) {
// On emulators, get boot order from nvram.
- IPL.bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
+ if (inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1)
+ CheckFloppySig = 0;
+ u32 bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
| ((inb_cmos(CMOS_BIOS_BOOTFLAG1) & 0xf0) << 4));
- if (!(inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1))
- IPL.checkfloppysig = 1;
+ DefaultFloppyPrio = DefaultCDPrio = DefaultHDPrio
+ = DefaultBEVPrio = DEFAULT_PRIO;
+ int i;
+ for (i=101; i<104; i++) {
+ u32 val = bootorder & 0x0f;
+ bootorder >>= 4;
+ switch (val) {
+ case 1: DefaultFloppyPrio = i; break;
+ case 2: DefaultHDPrio = i; break;
+ case 3: DefaultCDPrio = i; break;
+ case 4: DefaultBEVPrio = i; break;
+ }
+ }
}
+
+ loadBootOrder();
+}
+
+
+/****************************************************************
+ * BootList handling
+ ****************************************************************/
+
+struct bootentry_s {
+ int type;
+ union {
+ u32 data;
+ struct segoff_s vector;
+ struct drive_s *drive;
+ };
+ int priority;
+ const char *description;
+ struct bootentry_s *next;
+};
+static struct bootentry_s *BootList;
+
+#define IPL_TYPE_FLOPPY 0x01
+#define IPL_TYPE_HARDDISK 0x02
+#define IPL_TYPE_CDROM 0x03
+#define IPL_TYPE_CBFS 0x20
+#define IPL_TYPE_BEV 0x80
+#define IPL_TYPE_BCV 0x81
+
+static void
+bootentry_add(int type, int prio, u32 data, const char *desc)
+{
+ if (! CONFIG_BOOT)
+ return;
+ struct bootentry_s *be = malloc_tmp(sizeof(*be));
+ if (!be) {
+ warn_noalloc();
+ return;
+ }
+ be->type = type;
+ be->priority = prio;
+ be->data = data;
+ be->description = desc ?: "?";
+ dprintf(3, "Registering bootable: %s (type:%d prio:%d data:%x)\n"
+ , be->description, type, prio, data);
+
+ // Add entry in sorted order.
+ struct bootentry_s **pprev;
+ for (pprev = &BootList; *pprev; pprev = &(*pprev)->next) {
+ struct bootentry_s *pos = *pprev;
+ if (be->priority < pos->priority)
+ break;
+ if (be->priority > pos->priority)
+ continue;
+ if (be->type < pos->type)
+ break;
+ if (be->type > pos->type)
+ continue;
+ if (be->type <= IPL_TYPE_CDROM
+ && (be->drive->type < pos->drive->type
+ || (be->drive->type == pos->drive->type
+ && be->drive->cntl_id < pos->drive->cntl_id)))
+ break;
+ }
+ be->next = *pprev;
+ *pprev = be;
+}
+
+// Return the given priority if it's set - defaultprio otherwise.
+static inline int defPrio(int priority, int defaultprio) {
+ return (priority < 0) ? defaultprio : priority;
}
// Add a BEV vector for a given pnp compatible option rom.
void
-add_bev(u16 seg, u16 bev, u16 desc)
+boot_add_bev(u16 seg, u16 bev, u16 desc, int prio)
{
- // Found a device that thinks it can boot the system. Record
- // its BEV and product name string.
+ bootentry_add(IPL_TYPE_BEV, defPrio(prio, DefaultBEVPrio)
+ , SEGOFF(seg, bev).segoff
+ , desc ? MAKE_FLATPTR(seg, desc) : "Unknown");
+ DefaultBEVPrio = DEFAULT_PRIO;
+}
- if (! CONFIG_BOOT)
- return;
+// Add a bcv entry for an expansion card harddrive or legacy option rom
+void
+boot_add_bcv(u16 seg, u16 ip, u16 desc, int prio)
+{
+ bootentry_add(IPL_TYPE_BCV, defPrio(prio, DefaultHDPrio)
+ , SEGOFF(seg, ip).segoff
+ , desc ? MAKE_FLATPTR(seg, desc) : "Legacy option rom");
+}
- if (IPL.count >= ARRAY_SIZE(IPL.table))
- return;
+void
+boot_add_floppy(struct drive_s *drive_g, const char *desc, int prio)
+{
+ bootentry_add(IPL_TYPE_FLOPPY, defPrio(prio, DefaultFloppyPrio)
+ , (u32)drive_g, desc);
+}
+
+void
+boot_add_hd(struct drive_s *drive_g, const char *desc, int prio)
+{
+ bootentry_add(IPL_TYPE_HARDDISK, defPrio(prio, DefaultHDPrio)
+ , (u32)drive_g, desc);
+}
- struct ipl_entry_s *ie = &IPL.table[IPL.count];
- ie->type = IPL_TYPE_BEV;
- ie->vector = (seg << 16) | bev;
- if (desc)
- ie->description = MAKE_FLATPTR(seg, desc);
+void
+boot_add_cd(struct drive_s *drive_g, const char *desc, int prio)
+{
+ bootentry_add(IPL_TYPE_CDROM, defPrio(prio, DefaultCDPrio)
+ , (u32)drive_g, desc);
+}
- IPL.count++;
+// Add a CBFS payload entry
+void
+boot_add_cbfs(void *data, const char *desc, int prio)
+{
+ bootentry_add(IPL_TYPE_CBFS, defPrio(prio, DEFAULT_PRIO), (u32)data, desc);
}
/****************************************************************
- * Boot menu
+ * Boot menu and BCV execution
****************************************************************/
-void
-interactive_bootmenu()
+#define DEFAULT_BOOTMENU_WAIT 2500
+
+// Show IPL option menu.
+static void
+interactive_bootmenu(void)
{
- if (! CONFIG_BOOTMENU)
+ if (! CONFIG_BOOTMENU || ! qemu_cfg_show_boot_menu())
return;
while (get_keystroke(0) >= 0)
printf("Press F12 for boot menu.\n\n");
- int scan_code = get_keystroke(2500);
+ u32 menutime = romfile_loadint("etc/boot-menu-wait", DEFAULT_BOOTMENU_WAIT);
+ enable_bootsplash();
+ if (1 == 1) {
+ return;
+ }
+ int scan_code = get_keystroke(menutime);
+ disable_bootsplash();
if (scan_code != 0x86)
/* not F12 */
return;
;
printf("Select boot device:\n\n");
-
- int count = IPL.count;
- int i;
- for (i = 0; i < count; i++) {
- struct ipl_entry_s *ie = &IPL.table[i];
- char desc[33];
- printf("%d. %s\n", i+1
- , strtcpy(desc, ie->description, ARRAY_SIZE(desc)));
+ wait_threads();
+
+ // Show menu items
+ struct bootentry_s *pos = BootList;
+ int maxmenu = 0;
+ while (pos) {
+ char desc[60];
+ maxmenu++;
+ printf("%d. %s\n", maxmenu
+ , strtcpy(desc, pos->description, ARRAY_SIZE(desc)));
+ pos = pos->next;
}
+ // Get key press
for (;;) {
scan_code = get_keystroke(1000);
- if (scan_code == 0x01)
- // ESC
+ if (scan_code >= 1 && scan_code <= maxmenu+1)
+ break;
+ }
+ printf("\n");
+ if (scan_code == 0x01)
+ // ESC
+ return;
+
+ // Find entry and make top priority.
+ int choice = scan_code - 1;
+ struct bootentry_s **pprev = &BootList;
+ while (--choice)
+ pprev = &(*pprev)->next;
+ pos = *pprev;
+ *pprev = pos->next;
+ pos->next = BootList;
+ BootList = pos;
+ pos->priority = 0;
+}
+
+// BEV (Boot Execution Vector) list
+struct bev_s {
+ int type;
+ u32 vector;
+};
+static struct bev_s BEV[20];
+static int BEVCount;
+static int HaveHDBoot, HaveFDBoot;
+
+static void
+add_bev(int type, u32 vector)
+{
+ if (type == IPL_TYPE_HARDDISK && HaveHDBoot++)
+ return;
+ if (type == IPL_TYPE_FLOPPY && HaveFDBoot++)
+ return;
+ if (BEVCount >= ARRAY_SIZE(BEV))
+ return;
+ struct bev_s *bev = &BEV[BEVCount++];
+ bev->type = type;
+ bev->vector = vector;
+}
+
+// Prepare for boot - show menu and run bcvs.
+void
+boot_prep(void)
+{
+ if (! CONFIG_BOOT) {
+ wait_threads();
+ return;
+ }
+
+ // XXX - show available drives?
+
+ // Allow user to modify BCV/IPL order.
+ dprintf(3, "[wurm] bp1\n");
+ interactive_bootmenu();
+ dprintf(3, "[wurm] bp2\n");
+ wait_threads();
+
+ // Map drives and populate BEV list
+ struct bootentry_s *pos = BootList;
+ dprintf(3, "[wurm] bp3\n");
+ while (pos) {
+ switch (pos->type) {
+ case IPL_TYPE_BCV:
+ call_bcv(pos->vector.seg, pos->vector.offset);
+ add_bev(IPL_TYPE_HARDDISK, 0);
+ break;
+ case IPL_TYPE_FLOPPY:
+ map_floppy_drive(pos->drive);
+ add_bev(IPL_TYPE_FLOPPY, 0);
break;
- if (scan_code >= 0 && scan_code <= count + 1) {
- // Add user choice to the boot order.
- u16 choice = scan_code - 1;
- u32 bootorder = IPL.bootorder;
- IPL.bootorder = (bootorder << 4) | choice;
+ case IPL_TYPE_HARDDISK:
+ map_hd_drive(pos->drive);
+ add_bev(IPL_TYPE_HARDDISK, 0);
+ break;
+ case IPL_TYPE_CDROM:
+ map_cd_drive(pos->drive);
+ // NO BREAK
+ default:
+ add_bev(pos->type, pos->data);
break;
}
+ pos = pos->next;
}
- printf("\n");
+ dprintf(3, "[wurm] bp4\n");
+
+ // If nothing added a floppy/hd boot - add it manually.
+ add_bev(IPL_TYPE_FLOPPY, 0);
+ add_bev(IPL_TYPE_HARDDISK, 0);
+ dprintf(3, "[wurm] bp5\n");
}
* Boot code (int 18/19)
****************************************************************/
+// Jump to a bootup entry point.
static void
-call_boot_entry(u16 bootseg, u16 bootip, u8 bootdrv)
+call_boot_entry(struct segoff_s bootsegip, u8 bootdrv)
{
- dprintf(1, "Booting from %x:%x\n", bootseg, bootip);
-
+ dprintf(1, "Booting from %04x:%04x\n", bootsegip.seg, bootsegip.offset);
struct bregs br;
memset(&br, 0, sizeof(br));
- br.ip = bootip;
- br.cs = bootseg;
+ br.flags = F_IF;
+ br.code = bootsegip;
// Set the magic number in ax and the boot drive in dl.
br.dl = bootdrv;
br.ax = 0xaa55;
// Read sector
struct bregs br;
memset(&br, 0, sizeof(br));
+ br.flags = F_IF;
br.dl = bootdrv;
br.es = bootseg;
br.ah = 2;
u16 bootip = (bootseg & 0x0fff) << 4;
bootseg &= 0xf000;
- call_boot_entry(bootseg, bootip, bootdrv);
+ call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
}
// Boot from a CD-ROM
static void
-boot_cdrom()
+boot_cdrom(struct drive_s *drive_g)
{
if (! CONFIG_CDROM_BOOT)
return;
- int status = cdrom_boot();
+ printf("Booting from DVD/CD...\n");
+
+ int status = cdrom_boot(drive_g);
if (status) {
printf("Boot failed: Could not read from CDROM (code %04x)\n", status);
return;
}
u16 ebda_seg = get_ebda_seg();
- u8 bootdrv = GET_EBDA2(ebda_seg, cdemu.emulated_drive);
+ u8 bootdrv = GET_EBDA2(ebda_seg, cdemu.emulated_extdrive);
u16 bootseg = GET_EBDA2(ebda_seg, cdemu.load_segment);
/* Canonicalize bootseg:bootip */
u16 bootip = (bootseg & 0x0fff) << 4;
bootseg &= 0xf000;
- call_boot_entry(bootseg, bootip, bootdrv);
+ call_boot_entry(SEGOFF(bootseg, bootip), bootdrv);
}
+// Boot from a CBFS payload
static void
-do_boot(u16 seq_nr)
+boot_cbfs(struct cbfs_file *file)
{
- if (! CONFIG_BOOT)
- BX_PANIC("Boot support not compiled in.\n");
-
- u32 bootdev = IPL.bootorder;
- bootdev >>= 4 * seq_nr;
- bootdev &= 0xf;
+ if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH)
+ return;
+ printf("Booting from CBFS...\n");
+ cbfs_run_payload(file);
+}
- if (bootdev == 0)
- BX_PANIC("No bootable device.\n");
+// Boot from a BEV entry on an optionrom.
+static void
+boot_rom(u32 vector)
+{
+ printf("Booting from ROM...\n");
+ struct segoff_s so;
+ so.segoff = vector;
+ call_boot_entry(so, 0);
+}
- /* Translate bootdev to an IPL table offset by subtracting 1 */
- bootdev -= 1;
+// Determine next boot method and attempt a boot using it.
+static void
+do_boot(u16 seq_nr)
+{
+ if (! CONFIG_BOOT)
+ panic("Boot support not compiled in.\n");
- if (bootdev >= IPL.count) {
- dprintf(1, "Invalid boot device (0x%x)\n", bootdev);
- goto fail;
+ if (seq_nr >= BEVCount) {
+ printf("No bootable device.\n");
+ // Loop with irqs enabled - this allows ctrl+alt+delete to work.
+ for (;;)
+ wait_irq();
}
- /* Do the loading, and set up vector as a far pointer to the boot
- * address, and bootdrv as the boot drive */
- struct ipl_entry_s *ie = &IPL.table[bootdev];
- char desc[33];
- printf("Booting from %s...\n"
- , strtcpy(desc, ie->description, ARRAY_SIZE(desc)));
-
- switch(ie->type) {
+ // Boot the given BEV type.
+ struct bev_s *ie = &BEV[seq_nr];
+ switch (ie->type) {
case IPL_TYPE_FLOPPY:
- boot_disk(0x00, IPL.checkfloppysig);
+ printf("Booting from Floppy...\n");
+ boot_disk(0x00, CheckFloppySig);
break;
case IPL_TYPE_HARDDISK:
+ printf("Booting from Hard Disk...\n");
boot_disk(0x80, 1);
break;
case IPL_TYPE_CDROM:
- boot_cdrom();
+ boot_cdrom((void*)ie->vector);
+ break;
+ case IPL_TYPE_CBFS:
+ boot_cbfs((void*)ie->vector);
break;
case IPL_TYPE_BEV:
- call_boot_entry(ie->vector >> 16, ie->vector & 0xffff, 0);
+ boot_rom(ie->vector);
break;
}
// Boot failed: invoke the boot recovery function
struct bregs br;
-fail:
memset(&br, 0, sizeof(br));
+ br.flags = F_IF;
call16_int(0x18, &br);
}
// Boot Failure recovery: try the next device.
-void VISIBLE32
-handle_18()
+void VISIBLE32FLAT
+handle_18(void)
{
debug_serial_setup();
debug_enter(NULL, DEBUG_HDL_18);
}
// INT 19h Boot Load Service Entry Point
-void VISIBLE32
-handle_19()
+void VISIBLE32FLAT
+handle_19(void)
{
debug_serial_setup();
debug_enter(NULL, DEBUG_HDL_19);
SET_EBDA(boot_sequence, 0);
do_boot(0);
}
-
-// Ughh - some older gcc compilers have a bug which causes VISIBLE32
-// functions to not be exported as global variables.
-asm(".global handle_18, handle_19");
projects / seabios.git / blobdiff