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121 lines
2.5 KiB
121 lines
2.5 KiB
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* identify.c: identify machine by looking up system identifier
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*
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* Copyright (C) 1998 Thomas Bogendoerfer
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*
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* This code is based on arch/mips/sgi/kernel/system.c, which is
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*
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* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <asm/sgialib.h>
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#include <asm/bootinfo.h>
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struct smatch {
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char *arcname;
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char *liname;
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int type;
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int flags;
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};
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static struct smatch mach_table[] = {
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{
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.arcname = "SGI-IP22",
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.liname = "SGI Indy",
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.type = MACH_SGI_IP22,
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.flags = PROM_FLAG_ARCS,
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}, {
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.arcname = "SGI-IP27",
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.liname = "SGI Origin",
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.type = MACH_SGI_IP27,
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.flags = PROM_FLAG_ARCS,
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}, {
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.arcname = "SGI-IP28",
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.liname = "SGI IP28",
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.type = MACH_SGI_IP28,
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.flags = PROM_FLAG_ARCS,
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}, {
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.arcname = "SGI-IP30",
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.liname = "SGI Octane",
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.type = MACH_SGI_IP30,
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.flags = PROM_FLAG_ARCS,
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}, {
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.arcname = "SGI-IP32",
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.liname = "SGI O2",
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.type = MACH_SGI_IP32,
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.flags = PROM_FLAG_ARCS,
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}, {
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.arcname = "Microsoft-Jazz",
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.liname = "Jazz MIPS_Magnum_4000",
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.type = MACH_MIPS_MAGNUM_4000,
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.flags = 0,
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}, {
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.arcname = "PICA-61",
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.liname = "Jazz Acer_PICA_61",
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.type = MACH_ACER_PICA_61,
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.flags = 0,
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}, {
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.arcname = "RM200PCI",
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.liname = "SNI RM200_PCI",
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.type = MACH_SNI_RM200_PCI,
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.flags = PROM_FLAG_DONT_FREE_TEMP,
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}
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};
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int prom_flags;
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static struct smatch * __init string_to_mach(const char *s)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
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if (!strcmp(s, mach_table[i].arcname))
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return &mach_table[i];
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}
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panic("Yeee, could not determine architecture type <%s>", s);
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}
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char *system_type;
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const char *get_system_type(void)
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{
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return system_type;
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}
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void __init prom_identify_arch(void)
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{
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pcomponent *p;
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struct smatch *mach;
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const char *iname;
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/*
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* The root component tells us what machine architecture we have here.
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*/
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p = ArcGetChild(PROM_NULL_COMPONENT);
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if (p == NULL) {
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#ifdef CONFIG_SGI_IP27
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/* IP27 PROM misbehaves, seems to not implement ARC
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GetChild(). So we just assume it's an IP27. */
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iname = "SGI-IP27";
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#else
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iname = "Unknown";
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#endif
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} else
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iname = (char *) (long) p->iname;
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printk("ARCH: %s\n", iname);
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mach = string_to_mach(iname);
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system_type = mach->liname;
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mips_machtype = mach->type;
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prom_flags = mach->flags;
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}
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