diff options
Diffstat (limited to 'sys/boot/i386/loader')
| -rw-r--r-- | sys/boot/i386/loader/Makefile | 130 | ||||
| -rw-r--r-- | sys/boot/i386/loader/conf.c | 120 | ||||
| -rw-r--r-- | sys/boot/i386/loader/help.i386 | 64 | ||||
| -rw-r--r-- | sys/boot/i386/loader/loader.rc | 17 | ||||
| -rw-r--r-- | sys/boot/i386/loader/main.c | 296 | ||||
| -rw-r--r-- | sys/boot/i386/loader/version | 14 |
6 files changed, 641 insertions, 0 deletions
diff --git a/sys/boot/i386/loader/Makefile b/sys/boot/i386/loader/Makefile new file mode 100644 index 0000000..670bd9f --- /dev/null +++ b/sys/boot/i386/loader/Makefile @@ -0,0 +1,130 @@ +# $FreeBSD$ + +PROG= loader +STRIP= +NEWVERSWHAT= "bootstrap loader" i386 +BINDIR?= /boot +INSTALLFLAGS= -b + +# architecture-specific loader code +SRCS= main.c conf.c + +CFLAGS+= -ffreestanding +# Enable PXE TFTP or NFS support, not both. +.if defined(LOADER_TFTP_SUPPORT) +CFLAGS+= -DLOADER_TFTP_SUPPORT +.else +CFLAGS+= -DLOADER_NFS_SUPPORT +.endif + +# Enable PnP and ISA-PnP code. +HAVE_PNP= yes +HAVE_ISABUS= yes + +.if !defined(NOFORTH) +# Enable BootForth +BOOT_FORTH= yes +CFLAGS+= -DBOOT_FORTH -I${.CURDIR}/../../ficl -I${.CURDIR}/../../ficl/i386 +.if exists(${.OBJDIR}/../../ficl/libficl.a) +LIBFICL= ${.OBJDIR}/../../ficl/libficl.a +.else +LIBFICL= ${.CURDIR}/../../ficl/libficl.a +.endif +.endif + +.if defined(LOADER_BZIP2_SUPPORT) +CFLAGS+= -DLOADER_BZIP2_SUPPORT +.endif +.if !defined(LOADER_NO_GZIP_SUPPORT) +CFLAGS+= -DLOADER_GZIP_SUPPORT +.endif + +# Always add MI sources +.PATH: ${.CURDIR}/../../common +.include <${.CURDIR}/../../common/Makefile.inc> +CFLAGS+= -I${.CURDIR}/../../common +CFLAGS+= -I${.CURDIR}/../../.. -I. + +CLEANFILES+= vers.c vers.o ${PROG}.list ${PROG}.bin ${PROG}.sym ${PROG}.help + +CFLAGS+= -Wall +LDFLAGS= -nostdlib -static -Ttext 0x0 + +# i386 standalone support library +LIBI386= ${.OBJDIR}/../libi386/libi386.a +CFLAGS+= -I${.CURDIR}/.. + +# where to get libstand from +#XXX need a better way to do this +LIBSTAND= ${.CURDIR}/../../../../lib/libstand/libstand.a +.if !exists(${LIBSTAND}) +LIBSTAND= ${.OBJDIR}/../../../../lib/libstand/libstand.a +.if !exists(${LIBSTAND}) +LIBSTAND= -lstand +.endif +.endif +CFLAGS+= -I${.CURDIR}/../../../../lib/libstand/ + +# BTX components +.if exists(${.OBJDIR}/../btx) +BTXDIR= ${.OBJDIR}/../btx +.else +BTXDIR= ${.CURDIR}/../btx +.endif +BTXLDR= ${BTXDIR}/btxldr/btxldr +BTXKERN= ${BTXDIR}/btx/btx +BTXCRT= ${BTXDIR}/lib/crt0.o +CFLAGS+= -I${.CURDIR}/../btx/lib + +# BTX is expecting ELF components +CFLAGS+= -elf + +# Debug me! +#CFLAGS+= -g +#LDFLAGS+= -g + +vers.o: ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version + sh ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT} + ${CC} ${CFLAGS} -c vers.c + +${PROG}: ${PROG}.bin ${BTXLDR} ${BTXKERN} ${BTXCRT} + btxld -v -f aout -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \ + -b ${BTXKERN} ${PROG}.bin +# /usr/bin/kzip ${.TARGET} +# mv ${.TARGET}.kz ${.TARGET} + +${PROG}.bin: ${PROG}.sym + cp ${.ALLSRC} ${.TARGET} + strip -R .comment -R .note ${.TARGET} + +${PROG}.help: help.common help.i386 + cat ${.ALLSRC} | awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET} + +.PATH: ${.CURDIR}/../../forth +FILES= ${PROG}.help loader.4th support.4th loader.conf +FILES+= screen.4th frames.4th beastie.4th +FILESDIR_loader.conf= /boot/defaults + +.if !exists(${DESTDIR}/boot/loader.rc) +FILES+= ${.CURDIR}/loader.rc +.endif + +.include <${.CURDIR}/../Makefile.inc> + +# Cannot use ${OBJS} above this line +.include <bsd.prog.mk> + +${PROG}.sym: ${OBJS} ${LIBI386} ${LIBSTAND} ${LIBFICL} vers.o + ${CC} ${LDFLAGS} -o ${.TARGET} ${BTXCRT} ${OBJS} vers.o \ + ${LIBFICL} ${LIBI386} ${LIBSTAND} + +# If it's not there, don't consider it a target +.if exists(${.CURDIR}/../../../i386/include) +beforedepend ${OBJS}: machine + +machine: + ln -sf ${.CURDIR}/../../../i386/include machine + +.endif + +CLEANFILES+= machine diff --git a/sys/boot/i386/loader/conf.c b/sys/boot/i386/loader/conf.c new file mode 100644 index 0000000..e312959 --- /dev/null +++ b/sys/boot/i386/loader/conf.c @@ -0,0 +1,120 @@ +/*- + * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stand.h> +#include <bootstrap.h> +#include "libi386/libi386.h" + +/* + * We could use linker sets for some or all of these, but + * then we would have to control what ended up linked into + * the bootstrap. So it's easier to conditionalise things + * here. + * + * XXX rename these arrays to be consistent and less namespace-hostile + * + * XXX as libi386 and biosboot merge, some of these can become linker sets. + */ + +#if defined(LOADER_NFS_SUPPORT) && defined(LOADER_TFTP_SUPPORT) +#error "Cannot have both tftp and nfs support yet." +#endif + +/* Exported for libstand */ +struct devsw *devsw[] = { + &bioscd, + &biosdisk, +#if defined(LOADER_NFS_SUPPORT) || defined(LOADER_TFTP_SUPPORT) + &pxedisk, +#endif + NULL +}; + +struct fs_ops *file_system[] = { + &ufs_fsops, + &ext2fs_fsops, + &dosfs_fsops, + &cd9660_fsops, + &splitfs_fsops, +#ifdef LOADER_GZIP_SUPPORT + &gzipfs_fsops, +#endif +#ifdef LOADER_BZIP2_SUPPORT + &bzipfs_fsops, +#endif +#ifdef LOADER_NFS_SUPPORT + &nfs_fsops, +#endif +#ifdef LOADER_TFTP_SUPPORT + &tftp_fsops, +#endif + NULL +}; + +/* Exported for i386 only */ +/* + * Sort formats so that those that can detect based on arguments + * rather than reading the file go first. + */ +extern struct file_format i386_elf; +extern struct file_format amd64_elf; + +struct file_format *file_formats[] = { + &i386_elf, + &amd64_elf, + NULL +}; + +/* + * Consoles + * + * We don't prototype these in libi386.h because they require + * data structures from bootstrap.h as well. + */ +extern struct console vidconsole; +extern struct console comconsole; +extern struct console nullconsole; + +struct console *consoles[] = { + &vidconsole, + &comconsole, + &nullconsole, + NULL +}; + +extern struct pnphandler isapnphandler; +extern struct pnphandler biospnphandler; +extern struct pnphandler biospcihandler; + +struct pnphandler *pnphandlers[] = { + &biospnphandler, /* should go first, as it may set isapnp_readport */ + &isapnphandler, + &biospcihandler, + NULL +}; diff --git a/sys/boot/i386/loader/help.i386 b/sys/boot/i386/loader/help.i386 new file mode 100644 index 0000000..16e0fd3 --- /dev/null +++ b/sys/boot/i386/loader/help.i386 @@ -0,0 +1,64 @@ +################################################################################ +# TACPI DControl ACPI module behaviour + + $acpi_load + + If set, the ACPI module will be loaded. Clear it with + + unset acpi_load + + $hint.acpi.0.disabled="1" + + If set, the ACPI module won't be loaded. + + Note that the ACPI autodetection sets a number of hints to + pass information to the ACPI module. These should not be + overridden, or system behaviour will be undefined. + + +################################################################################ +# Treboot DReboot the system + + reboot + + Causes the system to immediately reboot. + +################################################################################ +# Theap DDisplay memory management statistics + + heap + + Requests debugging output from the heap manager. For debugging use + only. + +################################################################################ +# Tset Snum_ide_disks DSet the number of IDE disks + + NOTE: this variable is deprecated, use root_disk_unit instead. + + set num_ide_disks=<value> + + When booting from a SCSI disk on a system with one or more IDE disks, + and where the IDE disks are the default boot device, it is necessary + to tell the kernel how many IDE disks there are in order to have it + correctly locate the SCSI disk you are booting from. + +################################################################################ +# Tset Sboot_userconfig DStart Userconfig + + set boot_userconfig + + Requests that the kernel's interactive device configuration program + be run when the kernel is booted. + +################################################################################ +# Tset Sroot_disk_unit DForce the root disk unit number. + + set root_disk_unit=<value> + + If the code which detects the disk unit number for the root disk is + confused, eg. by a mix of SCSI and IDE disks, or IDE disks with + gaps in the sequence (eg. no primary slave), the unit number can be + forced by setting this variable. + +################################################################################ diff --git a/sys/boot/i386/loader/loader.rc b/sys/boot/i386/loader/loader.rc new file mode 100644 index 0000000..d650d99 --- /dev/null +++ b/sys/boot/i386/loader/loader.rc @@ -0,0 +1,17 @@ +\ Loader.rc +\ $FreeBSD$ +\ +\ Includes additional commands +include /boot/loader.4th + +\ Reads and processes loader.rc +start + +\ Tests for password -- executes autoboot first if a password was defined +check-password + +\ Load in the boot menu +include /boot/beastie.4th + +\ Start the boot menu +beastie-start diff --git a/sys/boot/i386/loader/main.c b/sys/boot/i386/loader/main.c new file mode 100644 index 0000000..77f1bc1 --- /dev/null +++ b/sys/boot/i386/loader/main.c @@ -0,0 +1,296 @@ +/*- + * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * MD bootstrap main() and assorted miscellaneous + * commands. + */ + +#include <stand.h> +#include <string.h> +#include <machine/bootinfo.h> +#include <sys/reboot.h> + +#include "bootstrap.h" +#include "libi386/libi386.h" +#include "btxv86.h" + +#define KARGS_FLAGS_CD 0x1 +#define KARGS_FLAGS_PXE 0x2 + +/* Arguments passed in from the boot1/boot2 loader */ +static struct +{ + u_int32_t howto; + u_int32_t bootdev; + u_int32_t bootflags; + u_int32_t pxeinfo; + u_int32_t res2; + u_int32_t bootinfo; +} *kargs; + +static u_int32_t initial_howto; +static u_int32_t initial_bootdev; +static struct bootinfo *initial_bootinfo; + +struct arch_switch archsw; /* MI/MD interface boundary */ + +static void extract_currdev(void); +static int isa_inb(int port); +static void isa_outb(int port, int value); +void exit(int code); + +/* from vers.c */ +extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[]; + +/* XXX debugging */ +extern char end[]; + +int +main(void) +{ + int i; + + /* Pick up arguments */ + kargs = (void *)__args; + initial_howto = kargs->howto; + initial_bootdev = kargs->bootdev; + initial_bootinfo = kargs->bootinfo ? (struct bootinfo *)PTOV(kargs->bootinfo) : NULL; + + /* + * Initialise the heap as early as possible. Once this is done, malloc() is usable. + */ + bios_getmem(); + + setheap((void *)end, (void *)bios_basemem); + + /* + * XXX Chicken-and-egg problem; we want to have console output early, but some + * console attributes may depend on reading from eg. the boot device, which we + * can't do yet. + * + * We can use printf() etc. once this is done. + * If the previous boot stage has requested a serial console, prefer that. + */ + if (initial_howto & RB_SERIAL) + setenv("console", "comconsole", 1); + if (initial_howto & RB_MUTE) + setenv("console", "nullconsole", 1); + cons_probe(); + + /* + * Initialise the block cache + */ + bcache_init(32, 512); /* 16k cache XXX tune this */ + + /* + * Special handling for PXE and CD booting. + */ + if (kargs->bootinfo == NULL) { + /* + * We only want the PXE disk to try to init itself in the below + * walk through devsw if we actually booted off of PXE. + */ + if (kargs->bootflags & KARGS_FLAGS_PXE) + pxe_enable(kargs->pxeinfo ? PTOV(kargs->pxeinfo) : NULL); + else if (kargs->bootflags & KARGS_FLAGS_CD) + bc_add(initial_bootdev); + } + + /* + * March through the device switch probing for things. + */ + for (i = 0; devsw[i] != NULL; i++) + if (devsw[i]->dv_init != NULL) + (devsw[i]->dv_init)(); + printf("BIOS %dkB/%dkB available memory\n", bios_basemem / 1024, bios_extmem / 1024); + if (initial_bootinfo != NULL) { + initial_bootinfo->bi_basemem = bios_basemem / 1024; + initial_bootinfo->bi_extmem = bios_extmem / 1024; + } + + /* detect ACPI for future reference */ + biosacpi_detect(); + + printf("\n"); + printf("%s, Revision %s\n", bootprog_name, bootprog_rev); + printf("(%s, %s)\n", bootprog_maker, bootprog_date); + + extract_currdev(); /* set $currdev and $loaddev */ + setenv("LINES", "24", 1); /* optional */ + + bios_getsmap(); + + archsw.arch_autoload = i386_autoload; + archsw.arch_getdev = i386_getdev; + archsw.arch_copyin = i386_copyin; + archsw.arch_copyout = i386_copyout; + archsw.arch_readin = i386_readin; + archsw.arch_isainb = isa_inb; + archsw.arch_isaoutb = isa_outb; + + interact(); /* doesn't return */ + + /* if we ever get here, it is an error */ + return (1); +} + +/* + * Set the 'current device' by (if possible) recovering the boot device as + * supplied by the initial bootstrap. + * + * XXX should be extended for netbooting. + */ +static void +extract_currdev(void) +{ + struct i386_devdesc new_currdev; + int major, biosdev = -1; + + /* Assume we are booting from a BIOS disk by default */ + new_currdev.d_dev = &biosdisk; + + /* new-style boot loaders such as pxeldr and cdldr */ + if (kargs->bootinfo == NULL) { + if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) { + /* we are booting from a CD with cdboot */ + new_currdev.d_dev = &bioscd; + new_currdev.d_kind.bioscd.unit = bc_bios2unit(initial_bootdev); + } else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) { + /* we are booting from pxeldr */ + new_currdev.d_dev = &pxedisk; + new_currdev.d_kind.netif.unit = 0; + } else { + /* we don't know what our boot device is */ + new_currdev.d_kind.biosdisk.slice = -1; + new_currdev.d_kind.biosdisk.partition = 0; + biosdev = -1; + } + } else if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) { + /* The passed-in boot device is bad */ + new_currdev.d_kind.biosdisk.slice = -1; + new_currdev.d_kind.biosdisk.partition = 0; + biosdev = -1; + } else { + new_currdev.d_kind.biosdisk.slice = (B_ADAPTOR(initial_bootdev) << 4) + + B_CONTROLLER(initial_bootdev) - 1; + new_currdev.d_kind.biosdisk.partition = B_PARTITION(initial_bootdev); + biosdev = initial_bootinfo->bi_bios_dev; + major = B_TYPE(initial_bootdev); + + /* + * If we are booted by an old bootstrap, we have to guess at the BIOS + * unit number. We will loose if there is more than one disk type + * and we are not booting from the lowest-numbered disk type + * (ie. SCSI when IDE also exists). + */ + if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */ + biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */ + } + new_currdev.d_type = new_currdev.d_dev->dv_type; + + /* + * If we are booting off of a BIOS disk and we didn't succeed in determining + * which one we booted off of, just use disk0: as a reasonable default. + */ + if ((new_currdev.d_type == biosdisk.dv_type) && + ((new_currdev.d_kind.biosdisk.unit = bd_bios2unit(biosdev)) == -1)) { + printf("Can't work out which disk we are booting from.\n" + "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev); + new_currdev.d_kind.biosdisk.unit = 0; + } + env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev), + i386_setcurrdev, env_nounset); + env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), env_noset, + env_nounset); +} + +COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); + +static int +command_reboot(int argc, char *argv[]) +{ + int i; + + for (i = 0; devsw[i] != NULL; ++i) + if (devsw[i]->dv_cleanup != NULL) + (devsw[i]->dv_cleanup)(); + + printf("Rebooting...\n"); + delay(1000000); + __exit(0); +} + +/* provide this for panic, as it's not in the startup code */ +void +exit(int code) +{ + __exit(code); +} + +COMMAND_SET(heap, "heap", "show heap usage", command_heap); + +static int +command_heap(int argc, char *argv[]) +{ + mallocstats(); + printf("heap base at %p, top at %p\n", end, sbrk(0)); + return(CMD_OK); +} + +/* ISA bus access functions for PnP, derived from <machine/cpufunc.h> */ +static int +isa_inb(int port) +{ + u_char data; + + if (__builtin_constant_p(port) && + (((port) & 0xffff) < 0x100) && + ((port) < 0x10000)) { + __asm __volatile("inb %1,%0" : "=a" (data) : "id" ((u_short)(port))); + } else { + __asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port)); + } + return(data); +} + +static void +isa_outb(int port, int value) +{ + u_char al = value; + + if (__builtin_constant_p(port) && + (((port) & 0xffff) < 0x100) && + ((port) < 0x10000)) { + __asm __volatile("outb %0,%1" : : "a" (al), "id" ((u_short)(port))); + } else { + __asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port)); + } +} + diff --git a/sys/boot/i386/loader/version b/sys/boot/i386/loader/version new file mode 100644 index 0000000..7a2acaf --- /dev/null +++ b/sys/boot/i386/loader/version @@ -0,0 +1,14 @@ +$FreeBSD$ + +NOTE ANY CHANGES YOU MAKE TO THE BOOTBLOCKS HERE. The format of this +file is important. Make sure the current version number is on line 6. + +1.1: New calling conventions for fopen. +1.0: New semantics for finding the kernel, new boot. +0.8: Set/getenv & cia, copyin/out. +0.7: Supports large KVM +0.6: Increased dictionary size -- supports loader.4th +0.5: First release version +0.2: Initial integration with BTX +0.1: Initial i386 version, inspiration and some structure from the + NetBSD version. |
