identify.c
2.38 KB
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* identify.c: identify machine by looking up system identifier
*
* Copyright (C) 1998 Thomas Bogendoerfer
*
* This code is based on arch/mips/sgi/kernel/system.c, which is
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*/
#include <linux/bug.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <asm/sgialib.h>
#include <asm/bootinfo.h>
struct smatch {
char *arcname;
char *liname;
int flags;
};
static struct smatch mach_table[] = {
{
.arcname = "SGI-IP22",
.liname = "SGI Indy",
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP27",
.liname = "SGI Origin",
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP28",
.liname = "SGI IP28",
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP30",
.liname = "SGI Octane",
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "SGI-IP32",
.liname = "SGI O2",
.flags = PROM_FLAG_ARCS,
}, {
.arcname = "Microsoft-Jazz",
.liname = "Jazz MIPS_Magnum_4000",
.flags = 0,
}, {
.arcname = "PICA-61",
.liname = "Jazz Acer_PICA_61",
.flags = 0,
}, {
.arcname = "RM200PCI",
.liname = "SNI RM200_PCI",
.flags = PROM_FLAG_DONT_FREE_TEMP,
}, {
.arcname = "RM200PCI-R5K",
.liname = "SNI RM200_PCI-R5K",
.flags = PROM_FLAG_DONT_FREE_TEMP,
}
};
int prom_flags;
static struct smatch * __init string_to_mach(const char *s)
{
int i;
for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
if (!strcmp(s, mach_table[i].arcname))
return &mach_table[i];
}
panic("Yeee, could not determine architecture type <%s>", s);
}
char *system_type;
const char *get_system_type(void)
{
return system_type;
}
void __init prom_identify_arch(void)
{
pcomponent *p;
struct smatch *mach;
const char *iname;
/*
* The root component tells us what machine architecture we have here.
*/
p = ArcGetChild(PROM_NULL_COMPONENT);
if (p == NULL) {
#ifdef CONFIG_SGI_IP27
/* IP27 PROM misbehaves, seems to not implement ARC
GetChild(). So we just assume it's an IP27. */
iname = "SGI-IP27";
#else
iname = "Unknown";
#endif
} else
iname = (char *) (long) p->iname;
printk("ARCH: %s\n", iname);
mach = string_to_mach(iname);
system_type = mach->liname;
prom_flags = mach->flags;
}