/* cpu.c: Dinky routines to look for the kind of Sparc cpu *        we are on. * * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) */#include <linux/kernel.h>#include <linux/init.h>#include <linux/smp.h>#include <linux/threads.h>#include <asm/oplib.h>#include <asm/page.h>#include <asm/head.h>#include <asm/psr.h>#include <asm/mbus.h>struct cpu_iu_info {  int psr_impl;  int psr_vers;  char* cpu_name;   /* should be enough I hope... */};struct cpu_fp_info {  int psr_impl;  int fp_vers;  char* fp_name;};/* In order to get the fpu type correct, you need to take the IDPROM's * machine type value into consideration too.  I will fix this. */struct cpu_fp_info linux_sparc_fpu[] = {  { 0, 0, "Fujitsu MB86910 or Weitek WTL1164/5"},  { 0, 1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"},  { 0, 2, "LSI Logic L64802 or Texas Instruments ACT8847"},  /* SparcStation SLC, SparcStation1 */  { 0, 3, "Weitek WTL3170/2"},  /* SPARCstation-5 */  { 0, 4, "Lsi Logic/Meiko L64804 or compatible"},  { 0, 5, "reserved"},  { 0, 6, "reserved"},  { 0, 7, "No FPU"},  { 1, 0, "ROSS HyperSparc combined IU/FPU"},  { 1, 1, "Lsi Logic L64814"},  { 1, 2, "Texas Instruments TMS390-C602A"},  { 1, 3, "Cypress CY7C602 FPU"},  { 1, 4, "reserved"},  { 1, 5, "reserved"},  { 1, 6, "reserved"},  { 1, 7, "No FPU"},  { 2, 0, "BIT B5010 or B5110/20 or B5210"},  { 2, 1, "reserved"},  { 2, 2, "reserved"},  { 2, 3, "reserved"},  { 2, 4, "reserved"},  { 2, 5, "reserved"},  { 2, 6, "reserved"},  { 2, 7, "No FPU"},  /* SuperSparc 50 module */  { 4, 0, "SuperSparc on-chip FPU"},  /* SparcClassic */  { 4, 4, "TI MicroSparc on chip FPU"},  { 5, 0, "Matsushita MN10501"},  { 5, 1, "reserved"},  { 5, 2, "reserved"},  { 5, 3, "reserved"},  { 5, 4, "reserved"},  { 5, 5, "reserved"},  { 5, 6, "reserved"},  { 5, 7, "No FPU"},  { 9, 3, "Fujitsu or Weitek on-chip FPU"},};#define NSPARCFPU  (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info))struct cpu_iu_info linux_sparc_chips[] = {  /* Sun4/100, 4/200, SLC */  { 0, 0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"},  /* borned STP1012PGA */  { 0, 4, "Fujitsu  MB86904"},  { 0, 5, "Fujitsu TurboSparc MB86907"},  /* SparcStation2, SparcServer 490 & 690 */  { 1, 0, "LSI Logic Corporation - L64811"},  /* SparcStation2 */  { 1, 1, "Cypress/ROSS CY7C601"},  /* Embedded controller */  { 1, 3, "Cypress/ROSS CY7C611"},  /* Ross Technologies HyperSparc */  { 1, 0xf, "ROSS HyperSparc RT620"},  { 1, 0xe, "ROSS HyperSparc RT625 or RT626"},  /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */  /* Someone please write the code to support this beast! ;) */  { 2, 0, "Bipolar Integrated Technology - B5010"},  { 3, 0, "LSI Logic Corporation - unknown-type"},  { 4, 0, "Texas Instruments, Inc. - SuperSparc-(II)"},  /* SparcClassic  --  borned STP1010TAB-50*/  { 4, 1, "Texas Instruments, Inc. - MicroSparc"},  { 4, 2, "Texas Instruments, Inc. - MicroSparc II"},  { 4, 3, "Texas Instruments, Inc. - SuperSparc 51"},  { 4, 4, "Texas Instruments, Inc. - SuperSparc 61"},  { 4, 5, "Texas Instruments, Inc. - unknown"},  { 5, 0, "Matsushita - MN10501"},  { 6, 0, "Philips Corporation - unknown"},  { 7, 0, "Harvest VLSI Design Center, Inc. - unknown"},  /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */  { 8, 0, "Systems and Processes Engineering Corporation (SPEC)"},  { 9, 0, "Fujitsu or Weitek Power-UP"},  { 9, 1, "Fujitsu or Weitek Power-UP"},  { 9, 2, "Fujitsu or Weitek Power-UP"},  { 9, 3, "Fujitsu or Weitek Power-UP"},  { 0xa, 0, "UNKNOWN CPU-VENDOR/TYPE"},  { 0xb, 0, "UNKNOWN CPU-VENDOR/TYPE"},  { 0xc, 0, "UNKNOWN CPU-VENDOR/TYPE"},  { 0xd, 0, "UNKNOWN CPU-VENDOR/TYPE"},  { 0xe, 0, "UNKNOWN CPU-VENDOR/TYPE"},  { 0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"},};#define NSPARCCHIPS  (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info))char *sparc_cpu_type[NR_CPUS] = { 0 };char *sparc_fpu_type[NR_CPUS] = { 0 };unsigned int fsr_storage;void __init cpu_probe(void){	int psr_impl, psr_vers, fpu_vers;	int i, cpuid, psr;	cpuid = hard_smp_processor_id();	psr_impl = ((get_psr()>>28)&0xf);	psr_vers = ((get_psr()>>24)&0xf);	psr = get_psr();	put_psr(psr | PSR_EF);	fpu_vers = ((get_fsr()>>17)&0x7);	put_psr(psr);	for(i = 0; i<NSPARCCHIPS; i++) {		if(linux_sparc_chips[i].psr_impl == psr_impl)			if(linux_sparc_chips[i].psr_vers == psr_vers) {				sparc_cpu_type[cpuid] = linux_sparc_chips[i].cpu_name;				break;			}	}	if(i==NSPARCCHIPS)		printk("DEBUG: psr.impl = 0x%x   psr.vers = 0x%x\n", psr_impl, 			    psr_vers);	for(i = 0; i<NSPARCFPU; i++) {		if(linux_sparc_fpu[i].psr_impl == psr_impl)			if(linux_sparc_fpu[i].fp_vers == fpu_vers) {				sparc_fpu_type[cpuid] = linux_sparc_fpu[i].fp_name;				break;			}	}	if(i == NSPARCFPU) {		printk("DEBUG: psr.impl = 0x%x  fsr.vers = 0x%x\n", psr_impl,			    fpu_vers);		sparc_fpu_type[cpuid] = linux_sparc_fpu[31].fp_name;	}}