identify.c
上传用户:lgb322
上传日期:2013-02-24
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文件大小:2k
- /*
- * identify.c: machine identification code.
- *
- * Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine
- *
- * $Id: identify.c,v 1.2 1999/10/09 00:00:58 ralf Exp $
- */
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/string.h>
- #include <asm/bootinfo.h>
- #include "dectypes.h"
- #include "prom.h"
- extern char *(*prom_getenv)(char *);
- extern int (*prom_printf)(char *, ...);
- extern int (*rex_getsysid)(void);
- extern unsigned long mips_machgroup;
- extern unsigned long mips_machtype;
- void __init prom_identify_arch (unsigned int magic)
- {
- unsigned char dec_cpunum, dec_firmrev, dec_etc;
- int dec_systype;
- unsigned long dec_sysid;
- if (magic != REX_PROM_MAGIC) {
- dec_sysid = simple_strtoul(prom_getenv("systype"), (char **)0, 0);
- } else {
- dec_sysid = rex_getsysid();
- if (dec_sysid == 0) {
- prom_printf("Zero sysid returned from PROMs! Assuming PMAX-like machine.n");
- dec_sysid = 1;
- }
- }
- dec_cpunum = (dec_sysid & 0xff000000) >> 24;
- dec_systype = (dec_sysid & 0xff0000) >> 16;
- dec_firmrev = (dec_sysid & 0xff00) >> 8;
- dec_etc = dec_sysid & 0xff;
- /* We're obviously one of the DEC machines */
- mips_machgroup = MACH_GROUP_DEC;
- /*
- * FIXME: This may not be an exhaustive list of DECStations/Servers!
- * Put all model-specific initialisation calls here.
- */
- prom_printf("This DECstation is a ");
- switch (dec_systype) {
- case DS2100_3100:
- prom_printf("DS2100/3100n");
- mips_machtype = MACH_DS23100;
- break;
- case DS5100: /* DS5100 MIPSMATE */
- prom_printf("DS5100n");
- mips_machtype = MACH_DS5100;
- break;
- case DS5000_200: /* DS5000 3max */
- prom_printf("DS5000/200n");
- mips_machtype = MACH_DS5000_200;
- break;
- case DS5000_1XX: /* DS5000/100 3min */
- prom_printf("DS5000/1xxn");
- mips_machtype = MACH_DS5000_1XX;
- break;
- case DS5000_2X0: /* DS5000/240 3max+ */
- prom_printf("DS5000/2x0n");
- mips_machtype = MACH_DS5000_2X0;
- break;
- case DS5000_XX: /* Personal DS5000/2x */
- prom_printf("Personal DS5000/xxn");
- mips_machtype = MACH_DS5000_XX;
- break;
- case DS5800: /* DS5800 Isis */
- prom_printf("DS5800n");
- mips_machtype = MACH_DS5800;
- break;
- case DS5400: /* DS5400 MIPSfair */
- prom_printf("DS5400n");
- mips_machtype = MACH_DS5400;
- break;
- case DS5500: /* DS5500 MIPSfair-2 */
- prom_printf("DS5500n");
- mips_machtype = MACH_DS5500;
- break;
- default:
- prom_printf("unknown, id is %x", dec_systype);
- mips_machtype = MACH_DSUNKNOWN;
- break;
- }
- }