The ARC BIOS / AlphaBIOS specific primary boot loader. This code is the

result of a joined effort with parts contributed by Doug Rabson, Warner
Losh and Stefan Esser (hope I did not forget anybody). Part of the sources
is obtained from NetBSD with modifications.

This code is work in progress:

As of the time of the initial import, a loader.exe executable is built,
which can be loaded on an Alpha with NT only firmware, but no attempt is
made to switch to OSF PAL code as required to start an actual kernel.

7 files changed, 677 insertions, 0 deletions

diff --git a/sys/boot/arc/loader/Makefile b/sys/boot/arc/loader/Makefile
new file mode 100644
index 0000000..8463b88
--- /dev/null
+++ b/sys/boot/arc/loader/Makefile
@@ -0,0 +1,90 @@
+#	$NetBSD: Makefile,v 1.12 1998/02/19 14:18:36 drochner Exp $
+
+BASE= 		loader
+PROG= 		${BASE}
+NOMAN=
+NEWVERSWHAT=	"ARC disk boot" ${MACHINE_ARCH}
+
+.PATH:		${.CURDIR}/../common
+
+# i386-specific bootstrap sources
+SRCS+=		main.c conf.c
+
+# Always add MI sources 
+.PATH:		${.CURDIR}/../../common
+.include	<${.CURDIR}/../../common/Makefile.inc>
+CFLAGS+=	-mno-fp-regs
+CFLAGS+=	-I${.CURDIR}/../../common -I${.CURDIR}
+CFLAGS+=	-I${.CURDIR}/../../.. -I.
+CFLAGS+=	-DLOADER
+
+CLEANFILES+=	vers.c vers.o gensetdefs.o gensetdefs setdef0.o setdef1.o \
+		setdefs.h start.o
+CLEANFILES+=	${BASE} ${BASE}.sym ${BASE}.list
+
+CFLAGS+=	-Wall
+
+CFLAGS+=	-I${LIBSTANDDIR}
+CFLAGS+=	-I${.CURDIR}/../include
+CRT=		start.o
+STRIP=
+BINDIR?=	/boot
+LOAD_ADDRESS?=	0xffffffff80900000
+
+all: ${BASE}.exe
+
+vers.o: ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version
+	sh ${.CURDIR}/../../common/newvers.sh ${.CURDIR}/version ${NEWVERSWHAT}
+	${CC} -c vers.c
+
+${BASE}.exe: ${BASE} ${BASE}.help
+	elf2exe ${BASE}.sym ${BASE}.exe
+
+#${BASE}: ${OBJS} ${LIBSTAND} ${LIBARC} ${CRT} vers.o setdef0.o setdef1.o
+#	${LD} -o ${BASE}.sym -M -e __start -N -Ttext ${LOAD_ADDRESS} \
+#	${CRT} setdef0.o ${OBJS} setdef1.o \
+#	vers.o ${LIBSTAND} ${LIBARC} ${LIBSTAND} >${.OBJDIR}/${BASE}.list
+
+${BASE}: ${OBJS} ${LIBSTAND} ${LIBARC} ${CRT} vers.o setdef0.o setdef1.o
+	${LD} -o ${BASE}.sym -M -N -Ttext ${LOAD_ADDRESS} \
+	${CRT} setdef0.o ${OBJS} setdef1.o \
+	vers.o ${LIBSTAND} ${LIBARC} ${LIBSTAND} >${.OBJDIR}/${BASE}.list
+
+${BASE}.help: help.common help.alpha
+	cat ${.ALLSRC} | awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET}
+
+beforeinstall:
+.if exists(${.OBJDIR}/loader.help)
+	${INSTALL} -C -o ${BINOWN} -g ${BINGRP} -m 444 \
+		${.OBJDIR}/${BASE}.help ${DESTDIR}/boot
+.else
+	${INSTALL} -C -o ${BINOWN} -g ${BINGRP} -m 444 \
+		${.CURDIR}/${BASE}.help ${DESTDIR}/boot
+.endif
+
+# Other fragments still to be brought in from ../Makfile.booters?
+start.o:	${.CURDIR}/../lib/arch/${MACHINE}/start.S
+	${CC} -c ${CFLAGS} $<
+
+setdef0.o: setdefs.h
+
+setdef1.o: setdefs.h
+
+machine:
+	ln -sf ${.CURDIR}/../../../alpha/include machine
+
+CLEANFILES+=	machine setdefs.h gensetdefs ${BASE} ${BASE}.exe loader.help
+
+.include <bsd.prog.mk>
+
+setdefs.h: gensetdefs ${OBJS}
+	@echo Generating linker sets
+	@./gensetdefs ${OBJS} >setdefs.h
+
+gensetdefs: gensetdefs.o
+	${CC} -static gensetdefs.o -o $@
+
+gensetdefs.o: gensetdefs.c
+	${CC} -c $<
+
+beforedepend ${OBJS}: machine
diff --git a/sys/boot/arc/loader/conf.c b/sys/boot/arc/loader/conf.c
new file mode 100644
index 0000000..1b5384c
--- /dev/null
+++ b/sys/boot/arc/loader/conf.c
@@ -0,0 +1,85 @@
+/*
+ * $Id: conf.c,v 1.2 1998/08/31 21:10:36 msmith Exp $
+ * From	$NetBSD: conf.c,v 1.2 1997/03/22 09:03:29 thorpej Exp $	 
+ */
+
+/*
+ * Copyright (c) 1997
+ *	Matthias Drochner.  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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed for the NetBSD Project
+ *	by Matthias Drochner.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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 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 <stand.h>
+#include "libarc.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
+ */
+
+/* Exported for libstand */
+struct devsw *devsw[] = {
+    &arcdisk,
+    NULL
+};
+
+struct fs_ops *file_system[] = {
+    &ufs_fsops,
+    &zipfs_fsops,
+    NULL
+};
+
+/* Exported for alpha only */
+/* 
+ * Sort formats so that those that can detect based on arguments
+ * rather than reading the file go first.
+ */
+extern struct module_format alpha_elf;
+
+struct module_format *module_formats[] = {
+    &alpha_elf,
+    NULL
+};
+
+/* 
+ * Consoles 
+ *
+ * We don't prototype these in libalpha.h because they require
+ * data structures from bootstrap.h as well.
+ */
+extern struct console arcconsole;
+
+struct console *consoles[] = {
+    &arcconsole,
+    NULL
+};
diff --git a/sys/boot/arc/loader/help.alpha b/sys/boot/arc/loader/help.alpha
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/sys/boot/arc/loader/help.alpha
diff --git a/sys/boot/arc/loader/main.c b/sys/boot/arc/loader/main.c
new file mode 100644
index 0000000..ea0165b
--- /dev/null
+++ b/sys/boot/arc/loader/main.c
@@ -0,0 +1,405 @@
+/*-
+ * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
+ * Copyright (c) 1998 Doug Rabson <dfr@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.
+ *
+ *	$Id$
+ */
+
+
+#include <stand.h>
+#include <string.h>
+#include <setjmp.h>
+
+#include <sys/param.h>
+#include "bootstrap.h"
+#include "libarc.h"
+#include "arctypes.h"
+#include "arcfuncs.h"
+
+extern	char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
+
+struct arc_devdesc	currdev;	/* our current device */
+struct arch_switch	archsw;		/* MI/MD interface boundary */
+
+extern char end[];
+extern void halt(void);
+
+#define	ARCENV_BOOTFILE		"OSLoadFilename"
+
+static char *MemoryTypes[] = {
+    "MemoryExceptionBlock",
+    "MemorySystemBlock",
+    "MemoryFree",
+    "MemoryBad",
+    "MemoryLoadedProgram",
+    "MemoryFirmwareTemporary",
+    "MemoryFirmwarePermanent",
+    "MemoryFreeContiguous",
+    "MemorySpecialMemory",
+    "MemoryMaximum",
+};
+
+#ifdef __alpha__
+#define ptob(p)	((p) << 13)
+#endif
+
+unsigned long
+memsize()
+{
+    unsigned long amount = 0;
+    MEMORY_DESCRIPTOR *desc;
+
+    for (desc = GetMemoryDescriptor(NULL); desc;
+	 desc = GetMemoryDescriptor(desc)) {
+	printf("%s at %x-%x\n", MemoryTypes[desc->Type],
+	       ptob(desc->BasePage),
+	       ptob(desc->BasePage + desc->PageCount));
+	if (desc->Type == MemoryFree
+	    || desc->Type == MemoryFirmwareTemporary)
+	    amount += (desc->PageCount << 13); /* XXX pagesize */
+    }
+
+    return amount;
+}
+
+static char *ConfigurationClasses[] = {
+    "SystemClass",
+    "ProcessorClass",
+    "CacheClass",
+    "AdapterClass",
+    "ControllerClass",
+    "PeripheralClass",
+    "MemoryClass",
+    "MaximumClass",
+};
+
+
+static char *ConfigurationTypes[] = {
+    "ArcSystem",
+    "CentralProcessor",
+    "FloatingPointProcessor",
+    "PrimaryIcache",
+    "PrimaryDcache",
+    "SecondaryIcache",
+    "SecondaryDcache",
+    "SecondaryCache",
+    "EisaAdapter",
+    "TcAdapter",
+    "ScsiAdapter",
+    "DtiAdapter",
+    "MultiFunctionAdapter",
+    "DiskController",
+    "TapeController",
+    "CdromController",
+    "WormController",
+    "SerialController",
+    "NetworkController",
+    "DisplayController",
+    "ParallelController",
+    "PointerController",
+    "KeyboardController",
+    "AudioController",
+    "OtherController",
+    "DiskPeripheral",
+    "FloppyDiskPeripheral",
+    "TapePeripheral",
+    "ModemPeripheral",
+    "MonitorPeripheral",
+    "PrinterPeripheral",
+    "PointerPeripheral",
+    "KeyboardPeripheral",
+    "TerminalPeripheral",
+    "OtherPeripheral",
+    "LinePeripheral",
+    "NetworkPeripheral",
+    "SystemMemory",
+    "MaximumType",
+};
+
+static char *ConfigurationTypeCodes[] = {
+    "ARC",
+    "CPU",
+    "FPC",
+    "PrimaryIcache",
+    "PrimaryDcache",
+    "SecondaryIcache",
+    "SecondaryDcache",
+    "SecondaryCache",
+    "eisa",
+    "TcAdapter",		/* XXX ? */
+    "scsi",
+    "DtiAdapter",		/* XXX ? */
+    "multi",
+    "disk",
+    "TapeController",		/* XXX ? */
+    "CdromController",		/* XXX ? */
+    "WormController",		/* XXX ? */
+    "serial",
+    "NetworkController",	/* XXX ? */
+    "video",
+    "par",
+    "PointerController",	/* XXX ? */
+    "key",
+    "AudioController",		/* XXX ? */
+    "OtherController",		/* XXX ? */
+    "rdisk",
+    "fdisk",
+    "TapePeripheral",		/* XXX ? */
+    "ModemPeripheral",		/* XXX ? */
+    "MonitorPeripheral",	/* XXX ? */
+    "PrinterPeripheral",	/* XXX ? */
+    "PointerPeripheral",	/* XXX ? */
+    "keyboard",
+    "TerminalPeripheral",	/* XXX ? */
+    "OtherPeripheral",		/* XXX ? */
+    "LinePeripheral",		/* XXX ? */
+    "NetworkPeripheral",	/* XXX ? */
+    "Memory",
+    "MaximumType"
+};
+
+static void
+indent(int level)
+{
+    while (level--)
+	putchar(' ');
+}
+
+void
+printconfig(unsigned int level, CONFIGURATION_COMPONENT *component)
+{
+    CONFIGURATION_COMPONENT *child;
+
+    indent(level);
+    printf("%s(%s,%d)",
+	   ConfigurationClasses[component->Class],
+	   ConfigurationTypes[component->Type],
+	   component->Key);
+#if 1
+    if (component->IdentifierLength)
+    	printf("=%d,%s\n", component->IdentifierLength,
+	       ptr(component->Identifier));
+    else
+	putchar('\n');
+#endif
+    getchar();
+    
+    for (child = GetChild(component); child; child = GetPeer(child)) {
+	printconfig(level + 2, child);
+    }
+}
+
+void
+dumpdisk(const char *name)
+{
+    u_int32_t fd, count;
+    unsigned char buf[512];
+    int i, j;
+
+    printf("dump first sector of %s\n", name);
+    if (Open(name, OpenReadOnly, &fd) != ESUCCESS) {
+	printf("can't open disk\n");
+	return;
+    }
+    if (Read(fd, buf, 512, &count) != ESUCCESS) {
+	printf("can't read from disk\n");
+	Close(fd);
+	return;
+    }
+    for (i = 0; i < 16; i++) {
+	for (j = 0; j < 32; j++)
+	    printf("%02x", buf[i*32 + j]);
+	putchar('\n');
+    }
+    Close(fd);
+}
+
+void
+listdisks(char *path, CONFIGURATION_COMPONENT *component)
+{
+    CONFIGURATION_COMPONENT *child;
+    char newpath[80];
+    char keybuf[20];
+
+    if (path == NULL) {
+	printf("\nARC disk devices:\n");
+	newpath[0] = '\0';
+    } else {
+	strcpy(newpath, path);
+	strcat(newpath, ConfigurationTypeCodes[component->Type]);
+	sprintf(keybuf, "(%d)", component->Key);
+	strcat(newpath, keybuf);
+    }
+    if (!strcmp(ConfigurationTypeCodes[component->Type], "rdisk") ||
+	!strcmp(ConfigurationTypeCodes[component->Type], "fdisk")) {
+	printf("%s\n", newpath);
+    }
+    for (child = GetChild(component); child; child = GetPeer(child)) {
+	listdisks(newpath, child);
+    }
+}
+
+static int exit_code = 0;
+jmp_buf exit_env;
+
+void
+exit(int code)
+{
+    exit_code = 0;
+    longjmp(exit_env, 1);
+}
+
+int
+main(int argc, int argv[], int envp[])
+{
+    int		i;
+    char	*bootfile;
+    
+    if (setjmp(exit_env))
+	return exit_code;
+
+    /* 
+     * Initialise the heap as early as possible.  Once this is done,
+     * alloc() is usable. The stack is buried inside us, so this is
+     * safe.
+     */
+    setheap((void *)end, (void *)(end + 512*1024));
+
+    /* 
+     * 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.
+     */
+    cons_probe();
+
+#if 0
+    printconfig(0, GetChild(NULL));
+    dumpdisk("scsi(0)disk(0)rdisk(0)partition(0)");
+#endif
+    listdisks(NULL, GetChild(NULL));
+    printf("\n");
+
+    make_rpb();
+
+    /*
+     * Initialise the block cache
+     */
+    bcache_init(32, 512);	/* 16k XXX tune this */
+
+    /*
+     * 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("\n");
+    printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
+    printf("(%s, %s)\n", bootprog_maker, bootprog_date);
+    printf("Memory: %ld k\n", memsize() / 1024);
+    
+    /* We're booting from an SRM disk, try to spiff this */
+    /* XXX presumes that biosdisk is first in devsw */
+    currdev.d_dev = devsw[0];
+    currdev.d_type = currdev.d_dev->dv_type;
+    currdev.d_kind.arcdisk.unit = 0;
+    /* XXX should be able to detect this, default to autoprobe */
+    currdev.d_kind.arcdisk.slice = -1;
+    /* default to 'a' */
+    currdev.d_kind.arcdisk.partition = 0;
+
+    /* Create arc-specific variables */
+    bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
+    if (bootfile)
+	setenv("bootfile", bootfile, 1);
+
+    env_setenv("currdev", EV_VOLATILE,
+	       arc_fmtdev(&currdev), arc_setcurrdev, env_nounset);
+    env_setenv("loaddev", EV_VOLATILE,
+	       arc_fmtdev(&currdev), env_noset, env_nounset);
+    setenv("LINES", "24", 1);				/* optional */
+    
+    archsw.arch_autoload = arc_autoload;
+    archsw.arch_getdev = arc_getdev;
+    archsw.arch_copyin = arc_copyin;
+    archsw.arch_copyout = arc_copyout;
+    archsw.arch_readin = arc_readin;
+
+    interact();			/* doesn't return */
+
+    return 0;			/* keep compiler happy */
+}
+
+COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
+
+static int
+command_reboot(int argc, char *argv[])
+{
+
+    printf("Rebooting...\n");
+    delay(1000000);
+    FwReboot();
+    /* Note: we shouldn't get to this point! */
+    panic("Reboot failed!");
+    exit(0);
+}
+
+COMMAND_SET(quit, "quit", "exit the loader", command_quit);
+
+static int
+command_quit(int argc, char *argv[])
+{
+    exit(0);
+    return(CMD_OK);
+}
+
+#if 0
+
+COMMAND_SET(stack, "stack", "show stack usage", command_stack);
+
+static int
+command_stack(int argc, char *argv[])
+{
+    char	*cp;
+
+    for (cp = &stackbase; cp < &stacktop; cp++)
+	if (*cp != 0)
+	    break;
+    
+    printf("%d bytes of stack used\n", &stacktop - cp);
+    return(CMD_OK);
+}
+
+#endif
+
+COMMAND_SET(heap, "heap", "show heap usage", command_heap);
+
+static int
+command_heap(int argc, char *argv[])
+{
+    printf("heap base at %p, top at %p, used %ld\n", end, sbrk(0), sbrk(0) - end);
+    return(CMD_OK);
+}
diff --git a/sys/boot/arc/loader/setdef0.c b/sys/boot/arc/loader/setdef0.c
new file mode 100644
index 0000000..79874ea
--- /dev/null
+++ b/sys/boot/arc/loader/setdef0.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1997 John D. Polstra
+ * 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.
+ *
+ * $Id: setdef0.c,v 1.1.1.1 1998/08/21 03:17:42 msmith Exp $
+ */
+
+#ifdef __ELF__
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+
+/*
+ * DEFINE_SET creates the section and label for a set, and emits the
+ * count word at the front of it.
+ */
+#define DEFINE_SET(set, count)				\
+	__asm__(".section .set." #set ",\"aw\"");	\
+	__asm__(".globl " #set);			\
+	__asm__(".type " #set ",@object");		\
+	__asm__(".p2align 3");				\
+	__asm__(#set ":");				\
+	__asm__(".quad " #count);			\
+	__asm__(".previous")
+
+#include "setdefs.h"		/* Contains a `DEFINE_SET' for each set */
+
+#endif	/* __ELF__ */
diff --git a/sys/boot/arc/loader/setdef1.c b/sys/boot/arc/loader/setdef1.c
new file mode 100644
index 0000000..9fffaf7
--- /dev/null
+++ b/sys/boot/arc/loader/setdef1.c
@@ -0,0 +1,41 @@
+/*-
+ * Copyright (c) 1997 John D. Polstra
+ * 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.
+ *
+ * $Id: setdef1.c,v 1.1.1.1 1998/08/21 03:17:42 msmith Exp $
+ */
+
+#ifdef __ELF__
+
+/*
+ * DEFINE_SET emits the NULL terminator for a set.
+ */
+#define DEFINE_SET(set, count)				\
+	__asm__(".section .set." #set ",\"aw\"");	\
+	__asm__(".quad 0");				\
+	__asm__(".previous")
+
+#include "setdefs.h"		/* Contains a `DEFINE_SET' for each set */
+
+#endif /* __ELF__ */
diff --git a/sys/boot/arc/loader/version b/sys/boot/arc/loader/version
new file mode 100644
index 0000000..23262b9
--- /dev/null
+++ b/sys/boot/arc/loader/version
@@ -0,0 +1,7 @@
+$Id: version,v 1.1.1.1 1998/08/21 03:17:42 msmith Exp $
+
+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.
+
+0.1:	Initial i386 version, germinated from the NetBSD i386
+	standalone, but enormously modified.