diff options
Diffstat (limited to 'sys/arch/hppa64/stand/boot')
| -rw-r--r-- | sys/arch/hppa64/stand/boot/Makefile | 60 | ||||
| -rw-r--r-- | sys/arch/hppa64/stand/boot/boot.8 | 342 | ||||
| -rw-r--r-- | sys/arch/hppa64/stand/boot/conf.c | 51 | ||||
| -rw-r--r-- | sys/arch/hppa64/stand/boot/exec.c | 42 | ||||
| -rw-r--r-- | sys/arch/hppa64/stand/boot/ld.script | 61 | ||||
| -rw-r--r-- | sys/arch/hppa64/stand/boot/srt0.S | 181 |
6 files changed, 737 insertions, 0 deletions
diff --git a/sys/arch/hppa64/stand/boot/Makefile b/sys/arch/hppa64/stand/boot/Makefile new file mode 100644 index 00000000000..dd9bc44c62f --- /dev/null +++ b/sys/arch/hppa64/stand/boot/Makefile @@ -0,0 +1,60 @@ +# $OpenBSD: Makefile,v 1.1 2005/04/01 10:40:48 mickey Exp $ + +MAN= boot.8 +MANSUBDIR=hppa64 +MLINKS= boot.8 boot.conf.8 +S =${.CURDIR}/../../../.. +CLEANFILES+= boot.gdb boot.map boot.lif + +.if ${MACHINE} == "hppa64" +PROG= boot +SRCS= srt0.S exec.c boot.c cmd.c vars.c bootarg.c conf.c +LD?= ld +LDFLAGS+=-Bstatic -nostartfiles -nostdlib -N -Ttext $(LINKADDR) +LDFLAGS+=-T ${.CURDIR}/ld.script -Map boot.map +LDFLAGS+=--warn-constructors --warn-common +SIZE?= size +STRIP?= strip +STANDIR=${.CURDIR}/.. +CRTBEGIN= +CRTEND= +LINKS= ${BINDIR}/boot.lif ${BINDIR}/sdboot \ + ${BINDIR}/boot.lif ${BINDIR}/stboot \ + ${BINDIR}/boot.lif ${BINDIR}/xxboot + +LDADD= ${LIBSA} ${LIBZ} ${LIBKERN} +DPADD= ${LIBSA} ${LIBZ} ${LIBKERN} + +.PATH: ${S}/stand/boot + +all: boot.lif + +realinstall: + ${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \ + boot ${DESTDIR}${BINDIR} + ${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \ + boot.lif ${DESTDIR}${BINDIR} + +.if exists(${.CURDIR}/../../compile/GENERIC/bsd) +bsd: ${.CURDIR}/../../compile/GENERIC/bsd + gzip -9 -c ${.CURDIR}/../../compile/GENERIC/bsd > bsd +ADDBOOT+=bsd +.endif + +# probably we should check for 256k limit for ISL +boot.lif: ${PROG} ${ADDBOOT} + -@cp ${PROG} ${PROG}.gdb + ${STRIP} ${PROG} + ${MKBOOT} -v ${PROG} ${ADDBOOT} boot.lif + +${PROG}: $(OBJS) $(DPADD) + $(LD) $(LDFLAGS) -o $(PROG) $(OBJS) $(LDADD) + @${SIZE} $(PROG) +.else +NOPROG= +.endif + +.include <bsd.prog.mk> + +CPPFLAGS+=${DEBUGFLAGS} -DRELOC=${LOADADDR} -DHEAP_LIMIT=${HEAP_LIMIT} +CFLAGS+=$(SACFLAGS) diff --git a/sys/arch/hppa64/stand/boot/boot.8 b/sys/arch/hppa64/stand/boot/boot.8 new file mode 100644 index 00000000000..4b52dabbe02 --- /dev/null +++ b/sys/arch/hppa64/stand/boot/boot.8 @@ -0,0 +1,342 @@ +.\" $OpenBSD: boot.8,v 1.1 2005/04/01 10:40:48 mickey Exp $ +.\" +.\" Copyright (c) 2002 Miodrag Vallat +.\" Copyright (c) 1997-2005 Michael Shalayeff +.\" 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 ``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 HIS RELATIVES 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 MIND, 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. +.\" +.\" +.Dd March 16, 2005 +.Dt BOOT 8 hppa +.Os +.Sh NAME +.Nm boot , +.Nm boot.conf +.Nd +hppa-specific bootstrap +.Sh DESCRIPTION +The main purpose of this program is to load the system kernel while dealing +with the various features of the PA-RISC hardware. +.Pp +As described in +.Xr boot_hppa 8 , +this program is loaded by the PDC firmware +and provides a convenient way to load the kernel. +.Pp +Basic operations include: +.Pp +.Bl -bullet -compact +.It +Loading kernels from any device supported by your system. +.It +Loading kernels compressed by +.Xr gzip 1 . +.It +Providing an interactive command line. +.It +Detecting and switching between multiple consoles. +.El +.Pp +The sequence of its operation is as follows: initialization, +parsing the configuration file, then an interactive command line. +While at the command line you have 5 seconds to type any commands, if needed. +If time expires, the kernel will be loaded according to +the current variable settings (see the +.Nm set +command). +Each time a kernel load fails, the timeout is increased by one second. +The sequence of +.Nm +operations is as follows: +.Bl -enum +.It +If the file +.Pa /etc/boot.conf +exists on the filesystem or LIF image +.Nm +was loaded from, open and parse it. +This file may contain any commands +.Nm +accepts at the interactive prompt. +Though default settings usually suffice, they can be changed here. +.It +The header line +.Pp +.Dl >> OpenBSD/hppa BOOT [x.xx] +.Pp +is displayed to the active console, where +.Ar x.xx +is the version number of the +.Nm +program, followed by the +.Pp +.Dl boot> +.Pp +prompt, which means you are in interactive mode and may enter commands. +If you do not, +.Nm +will proceed to load the kernel with the current parameters after the +timeout period has expired. +.El +.Pp +By default, +.Nm +attempts to load the kernel executable +.Pa /bsd . +If that fails, it will attempt to load +.Pa /obsd +and then +.Pa /bsd.old . +If it fails to find any of these files, +and no alternative kernel image has been specified, +the system will be unable to boot. +.Sh COMMANDS +The following commands are accepted at the +.Nm +prompt: +.Bl -tag -width shorten +.It boot Op Ar image Op Fl acds +Boots the kernel image specified by +.Ar image +with any options given. +Image specification consists of a pair +.Ar device : Ns Ar filename ; +either or both can be omitted (`:' is not needed if both are omitted), +in which case values from +.Nm +variables will be used. +.Bl -tag -width _a_ +.It Fl a +Causes the kernel to ask for the +.Nm root +device to use. +.It Fl c +Causes the kernel to go into +.Xr boot_config 8 +before performing +.Xr autoconf 4 +procedures. +.It Fl d +Causes the kernel to drop into +.Xr ddb 4 +at the earliest convenient point. +.It Fl s +Causes the kernel to boot single-user. +.El +.It echo Op Ar args +Displays +.Ar args +on the console device. +.It help +Prints a list of available commands and machine dependent +commands, if any. +.It machine Op Ar command +Issues machine-dependent commands. +These are defined for hppa architecture: +.Bl -tag -width keyboard +.It Nm console +Displays or sets the console path. +.Pp +When invoked with no argument, this command will display the configured +console path found in the stable storage area. +.Pp +Otherwise, the argument will be interpreted as a console path +definition string, and +.Nm +will attempt to switch the console configuration to the desired device. +The console definition attempts to follow the PDC syntax, +and would have a form of: +.Pp +.Bd -filled -compact +graphics +.Op _head +.Op .mode +.Ed +for graphics console, and +.Pp +.Bd -filled -compact +rs232 +.Op _2 +.Op .speed Op .bits Op .parity +.Ed +for serial console. +.Pp +The default head and mode for graphics console are 0, that is the default +videomode of the first graphics device. +The default serial settings are 9600 bps, 8 data bits, and no parity. +.It Nm keyboard +Displays or sets the keyboard path. +.Pp +When invoked with no argument, this command will display the configured +keyboard path found in the stable storage area. +.Pp +Otherwise, the argument will be interpreted as a keyboard path definition +string, and +.Nm +will attempt to switch the keyboard configuration to the desired port. +The keyboard definition attempts to follow the PDC syntax, +and would have a form of: +.Pp +.Bd -filled -compact +hil +.Ed +for hil keyboard, and +.Pp +.Bd -filled -compact +ps2 +.Ed +for PS/2 keyboard. +.El +.Pp +After changing any path settings, the machine usually has to be restarted for +the changes to have effect. +.It ls Op Ar directory +Prints contents of the specified +.Ar directory +in long format including: attributes and file type, owner, group, +size, filename. +.It reboot +Reboots the machine by initiating a warm boot procedure. +.It set Op Ar varname Op Ar value +If invoked without arguments, prints a list of variables and their values. +If only +.Ar varname +is specified, displays contents of that variable. +If +.Ar varname +and +.Ar value +are both specified, sets that variable to the given value. +Variables include: +.Pp +.Bl -tag -compact -width boothow +.It Nm addr +Address at which to load the kernel. +.It Nm debug +Debug flag if +.Nm +was compiled with DEBUG defined. +.It Nm device +Boot device name (i.e., +.Li lf0a , +.Li sd0a ) . +.It Nm howto +Options to pass to the loaded kernel. +.It Nm image +File name containing the kernel image. +.It Nm timeout +Number of seconds boot will wait for human intervention before +booting the default kernel image. +.\" .It Nm tty +.\" Active console device name (i.e., +.\" .Li ttya , +.\" .Li ttyb , +.\" .Li ite0) . +.El +.\" .It stty Op Ar device Op Ar speed +.\" Displays or sets the +.\" .Ar speed +.\" for a console +.\" .Ar device . +.\" If changing the baudrate for the currently active console, +.\" .Nm +.\" offers you five seconds of grace time before committing the change +.\" to allow you to change your terminal's speed to match. +.\" If changing speed +.\" .Em not +.\" for the active console, the baudrate is set for the +.\" .Em next +.\" time you switch to a serial console. +.\" The baudrate value is not used for the +.\" .Li ite0 +.\" console. +.\" .Pp +.\" The default baudrate is 9600bps. +.It time +Displays system time and date. +.El +.Sh FILES +.Bl -tag -width /etc/boot.conf -compact +.It Pa /boot +system bootstrap +.It Pa /etc/boot.conf +system bootstrap's startup file +.It Pa /bsd +kernel image +.El +.Sh EXAMPLES +Boot the default kernel: +.Pp +.Dl boot> boot +.Pp +Remove the 5 second pause at boot-time permanently, causing +.Nm +to load the kernel immediately without prompting: +.Pp +.Dl # echo \&"boot\&" > /etc/boot.conf +.Pp +Use serial console on the first serial port, with the usual 9600 8N1 settings. +A null modem cable should connect the specified serial port to a terminal. +Useful for debugging. +.Pp +.Dl boot> machine console rs232.9600.8.none +.Pp +Boot the kernel named +.Pa /bsd +from the second SCSI disk in +.Dq User Kernel Configuration +mode (see +.Xr boot_config 8 ) . +This mechanism allows for the explicit enabling and disabling of devices +during the current boot sequence, as well as the modification +of device parameters. +Once booted, such changes can be made permanent by using +.Xr config 8 Ns 's +.Fl e +option. +.Pp +.Dl boot> boot sd1a:/bsd -c +.Sh SEE ALSO +.Xr gzip 1 , +.Xr autoconf 4 , +.Xr ddb 4 , +.Xr boot_config 8 , +.Xr boot_hppa 8 , +.\" .Xr installboot 8 , +.Xr reboot 8 +.Pp +RFC 1950 describes the zlib library interface. +.Pp +The official home page for the version of zlib used in this +operating system see http://quest.jpl.nasa.gov/zlib/. +.Sh HISTORY +This program was written by Michael Shalayeff for +.Ox 2.1 . +The hppa specific parts were written by Michael Shalayeff and Miodrag Vallat +for +.Ox 3.1 . +.Sh CAVEATS +Making mistakes in console paths may cost you a toupee. +.Sh BUGS +Changing the display resolution (mode) on a graphics console does not work +correctly. diff --git a/sys/arch/hppa64/stand/boot/conf.c b/sys/arch/hppa64/stand/boot/conf.c new file mode 100644 index 00000000000..91ecd77b2b1 --- /dev/null +++ b/sys/arch/hppa64/stand/boot/conf.c @@ -0,0 +1,51 @@ +/* $OpenBSD: conf.c,v 1.1 2005/04/01 10:40:48 mickey Exp $ */ + +/* + * Copyright (c) 2005 Michael Shalayeff + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <libsa.h> +#include <lib/libsa/ufs.h> +#include <lib/libsa/cd9660.h> +#include <dev/cons.h> + +const char version[] = "0.8"; +int debug = 0; + +struct fs_ops file_system[] = { + { ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, + ufs_stat, ufs_readdir }, + { cd9660_open, cd9660_close, cd9660_read, cd9660_write, cd9660_seek, + cd9660_stat, cd9660_readdir }, + { lif_open, lif_close, lif_read, lif_write, lif_seek, + lif_stat, lif_readdir }, +}; +int nfsys = NENTS(file_system); + +struct devsw devsw[] = { + { "dk", iodcstrategy, dkopen, dkclose, noioctl }, + { "ct", iodcstrategy, ctopen, ctclose, noioctl }, + { "lf", iodcstrategy, lfopen, lfclose, noioctl } +}; +int ndevs = NENTS(devsw); + +struct consdev constab[] = { + { ite_probe, ite_init, ite_getc, ite_putc }, + { NULL } +}; +struct consdev *cn_tab; + diff --git a/sys/arch/hppa64/stand/boot/exec.c b/sys/arch/hppa64/stand/boot/exec.c new file mode 100644 index 00000000000..adc206b3a19 --- /dev/null +++ b/sys/arch/hppa64/stand/boot/exec.c @@ -0,0 +1,42 @@ +/* $OpenBSD: exec.c,v 1.1 2005/04/01 10:40:48 mickey Exp $ */ + +/* + * Copyright (c) 2005 Michael Shalayeff + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/param.h> +#include <machine/pdc.h> +#include "libsa.h" +#include <lib/libsa/loadfile.h> +#include <stand/boot/bootarg.h> +#include "dev_hppa64.h" + +typedef void (*startfuncp)(int, int, int, int, int, int, caddr_t) + __attribute__ ((noreturn)); + +void +run_loadfile(u_long *marks, int howto) +{ + fcacheall(); + + __asm("mtctl %r0, %cr17"); + __asm("mtctl %r0, %cr17"); + /* stack and the gung is ok at this point, so, no need for asm setup */ + (*(startfuncp)(marks[MARK_ENTRY]))((int)(long)(long)pdc, howto, bootdev, + marks[MARK_END], BOOTARG_APIVER, BOOTARG_LEN, (caddr_t)BOOTARG_OFF); + + /* not reached */ +} diff --git a/sys/arch/hppa64/stand/boot/ld.script b/sys/arch/hppa64/stand/boot/ld.script new file mode 100644 index 00000000000..51aed14df19 --- /dev/null +++ b/sys/arch/hppa64/stand/boot/ld.script @@ -0,0 +1,61 @@ +/* $OpenBSD: ld.script,v 1.1 2005/04/01 10:40:48 mickey Exp $ */ + +OUTPUT_FORMAT("elf64-hppa") +OUTPUT_ARCH(hppa2.0w) +ENTRY(begin) + +SECTIONS { + + /* Read-only sections, merged into text segment: */ + . = + SIZEOF_HEADERS; + .text : { + *(.text) + *(.text.*) + *(.rodata) + *(.rodata1) + *($CODE$) + etext = .; + } = 0x08000240 + + /* Read-write sections, merged into data segment: */ + .data : { + $global$ = .; + *(.data) + *(.data1) + *(.sdata) + *(.sdata2) + *(.dynamic) + CONSTRUCTORS + edata = ABSOLUTE(.); + } = 0 + + .opd : { *(.opd) } + PROVIDE(__gp = .); + .plt : { *(.plt) } + .dlt : { *(.dlt) } + + .bss : { + __bss_start = .; + *(.dynbss) + *(.bss) + *(.sbss) + *(.scommon) + *(COMMON) + end = ABSOLUTE(.); + __bss_end = .; + } + + /* don't need an unwind in the boot, unless we'll have a boot-ddb (; */ + /DISCARD/ : + { + *(.PARISC.unwind) + *(.exitcall.exit) + *(.interp) + *(.dynsym) + *(.dynstr) + *(.dynamic) + *(.hash) + *(.stub) + } +} + diff --git a/sys/arch/hppa64/stand/boot/srt0.S b/sys/arch/hppa64/stand/boot/srt0.S new file mode 100644 index 00000000000..99498dbf970 --- /dev/null +++ b/sys/arch/hppa64/stand/boot/srt0.S @@ -0,0 +1,181 @@ +/* $OpenBSD: srt0.S,v 1.1 2005/04/01 10:40:48 mickey Exp $ */ + +/* + * Copyright (c) 2005 Michael Shalayeff + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +/* + * Copyright 1996 1995 by Open Software Foundation, Inc. + * All Rights Reserved + * + * Permission to use, copy, modify, and distribute this software and + * its documentation for any purpose and without fee is hereby granted, + * provided that the above copyright notice appears in all copies and + * that both the copyright notice and this permission notice appear in + * supporting documentation. + * + * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, + * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION + * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ +; +; Copyright (c) 1990 mt Xinu, Inc. All rights reserved. +; Copyright (c) 1990 University of Utah. All rights reserved. +; +; This file may be freely distributed in any form as long as +; this copyright notice is included. +; THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR +; IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED +; WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. +; +; Utah $Hdr: srt0.c 1.3 94/12/13$ +; + +#define _LOCORE +#include <machine/iomod.h> +#include <machine/asm.h> +#include <machine/frame.h> + +/* + * This is the ending of the begin + */ +ENTRY(begin,0) + + blr %r0,%r5 ; Get address of 'boff' into 'r5', + ldo begin-boff(%r5),%r5 ; and subtract to get 'begin'. +boff + ldil L%RELOC,%r4 + ldo R%RELOC(%r4),%r4 + ldo start-begin(%r4),%rp + ldil L%edata,%r3 + ldo R%edata(%r3),%r3 ; Get address of edata. + ldil L%begin,%r1 + ldo R%begin(%r1),%r1 ; Get address of begin + sub %r3,%r1,%r3 ; Subtract to get # of bytes to copy +copyloop ; do + ldwm 4(%r5),%r1 ; *r4++ = *r5++; + addib,>= -4,%r3,copyloop ; while (--r3 >= 0); + stwm %r1,4(%r4) + + ; here we zero the .bss + ldil L%__bss_start, %r4 + ldo R%__bss_start(%r4), %r4 + ldil L%__bss_end, %r3 + ldo R%__bss_end(%r3), %r3 +zeroloop + combf,<,n %r3,%r4, zeroloop ; while (r4 < r3); + stwm %r0,4(%r4) ; *r4++ = 0; + + ldil L%$global$,%dp + ldo R%$global$(%dp),%dp + ldil L%start,%r1 + ldo R%start(%r1),%r1 + sub %dp,%r1,%dp ; Subtract to get difference + add %rp,%dp,%dp ; and relocate it. + +; +; We have relocated ourself to RELOC. If we are running on a machine +; with separate instruction and data caches, we must flush our data +; cache before trying to execute the code starting at rp. +; + ldil L%RELOC,%r22 ; Set %t1 to start of relocated code. + ldo R%RELOC(%r22),%r22 + ldil L%edata,%r21 ; Set r21 to address of edata + ldo R%edata(%r21),%r21 + ldil L%begin,%r1 ; set %r1 to address of begin + ldo R%begin(%r1),%r1 + sub %r21,%r1,%r21 ; Subtract to get length + mtsp %r0,%sr0 ; Set sr0 to kernel space. + ldo -1(%r21),%r21 + fdc %r21(0,%r22) +loop addib,>,n -16,%r21,loop ; Decrement by cache line size (16). + fdc %r21(%sr0,%r22) + fdc 0(%sr0,%r22) ; Flush first word at addr to handle + sync ; arbitrary cache line boundary. + nop ; Prevent prefetching. + nop + nop + nop + nop + nop + nop + bv 0(%rp) + nop +EXIT(begin) /* jump to relocated code */ + +start + ldil L%HEAP_LIMIT, %sp + ldo R%HEAP_LIMIT(%sp), %sp + + .import bootprompt, data + ldil L%bootprompt, %r1 + stw %arg0, R%bootprompt(%r1) + b boot ; Call boot(), + copy %r0, %arg0 ; use default boot device + nop + +/* + * rtt - restart the box + */ +LEAF_ENTRY(_rtt) + ldil L%LBCAST_ADDR, %arg1 + ldi CMD_RESET, %arg0 + stw %arg0, R%iomod_command(%arg1) +forever ; Loop until bus reset takes effect. + b,n forever + + bv 0(%rp) + ldo -48(%sp),%sp +EXIT(_rtt) + +ENTRY(pdc_call,96) + copy %r3, %r1 + std %rp, HPPA_FRAME_RP(%sp) + copy %sp, %r3 + std,ma %r1, HPPA_FRAME_SIZE+8*4(%sp) + + copy %arg0, %r1 + copy %arg1, %arg0 + copy %arg2, %arg1 + copy %arg3, %arg2 + copy arg4, %arg3 + stw arg5, -(32 + 4*(4 + 1))(%sp) + stw arg6, -(32 + 4*(5 + 1))(%sp) + stw arg7, -(32 + 4*(6 + 1))(%sp) + ldw 0(ap), arg5 + ldw 8(ap), arg6 + ldw 16(ap), arg7 + stw arg5, -(32 + 4*(7 + 1))(%sp) + stw arg6, -(32 + 4*(8 + 1))(%sp) + stw arg7, -(32 + 4*(9 + 1))(%sp) + + .call + blr %r0, %rp + bv,n %r0(%r1) + nop + + ldd HPPA_FRAME_RP(%r3), %rp + bv %r0(%rp) + ldd,mb -(HPPA_FRAME_SIZE+8*4)(%sp), %r3 +EXIT(pdc_call) + + .end |