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/* 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;
}
}
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