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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>
#include <asm/cpudata.h>
#include "kernel.h"
DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
struct cpu_info {
int psr_vers;
const char *name;
};
struct fpu_info {
int fp_vers;
const char *name;
};
#define NOCPU 8
#define NOFPU 8
struct manufacturer_info {
int psr_impl;
struct cpu_info cpu_info[NOCPU];
struct fpu_info fpu_info[NOFPU];
};
#define CPU(ver, _name) \
{ .psr_vers = ver, .name = _name }
#define FPU(ver, _name) \
{ .fp_vers = ver, .name = _name }
static const struct manufacturer_info __initconst manufacturer_info[] = {
{
0,
/* Sun4/100, 4/200, SLC */
.cpu_info = {
CPU(0, "Fujitsu MB86900/1A or LSI L64831 SparcKIT-40"),
/* borned STP1012PGA */
CPU(4, "Fujitsu MB86904"),
CPU(5, "Fujitsu TurboSparc MB86907"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
/* SparcStation SLC, SparcStation1 */
FPU(3, "Weitek WTL3170/2"),
/* SPARCstation-5 */
FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
FPU(-1, NULL)
}
},{
1,
.cpu_info = {
/* SparcStation2, SparcServer 490 & 690 */
CPU(0, "LSI Logic Corporation - L64811"),
/* SparcStation2 */
CPU(1, "Cypress/ROSS CY7C601"),
/* Embedded controller */
CPU(3, "Cypress/ROSS CY7C611"),
/* Ross Technologies HyperSparc */
CPU(0xf, "ROSS HyperSparc RT620"),
CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(0, "ROSS HyperSparc combined IU/FPU"),
FPU(1, "Lsi Logic L64814"),
FPU(2, "Texas Instruments TMS390-C602A"),
FPU(3, "Cypress CY7C602 FPU"),
FPU(-1, NULL)
}
},{
2,
.cpu_info = {
/* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
/* Someone please write the code to support this beast! ;) */
CPU(0, "Bipolar Integrated Technology - B5010"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(-1, NULL)
}
},{
3,
.cpu_info = {
CPU(0, "LSI Logic Corporation - unknown-type"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(-1, NULL)
}
},{
4,
.cpu_info = {
CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
/* SparcClassic -- borned STP1010TAB-50*/
CPU(1, "Texas Instruments, Inc. - MicroSparc"),
CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
CPU(5, "Texas Instruments, Inc. - unknown"),
CPU(-1, NULL)
},
.fpu_info = {
/* SuperSparc 50 module */
FPU(0, "SuperSparc on-chip FPU"),
/* SparcClassic */
FPU(4, "TI MicroSparc on chip FPU"),
FPU(-1, NULL)
}
},{
5,
.cpu_info = {
CPU(0, "Matsushita - MN10501"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(0, "Matsushita MN10501"),
FPU(-1, NULL)
}
},{
6,
.cpu_info = {
CPU(0, "Philips Corporation - unknown"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(-1, NULL)
}
},{
7,
.cpu_info = {
CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(-1, NULL)
}
},{
8,
.cpu_info = {
CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(-1, NULL)
}
},{
9,
.cpu_info = {
/* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
CPU(0, "Fujitsu or Weitek Power-UP"),
CPU(1, "Fujitsu or Weitek Power-UP"),
CPU(2, "Fujitsu or Weitek Power-UP"),
CPU(3, "Fujitsu or Weitek Power-UP"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(3, "Fujitsu or Weitek on-chip FPU"),
FPU(-1, NULL)
}
}};
/* 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.
*/
const char *sparc_cpu_type;
const char *sparc_fpu_type;
unsigned int fsr_storage;
static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
{
sparc_cpu_type = NULL;
sparc_fpu_type = NULL;
if (psr_impl < ARRAY_SIZE(manufacturer_info))
{
const struct cpu_info *cpu;
const struct fpu_info *fpu;
cpu = &manufacturer_info[psr_impl].cpu_info[0];
while (cpu->psr_vers != -1)
{
if (cpu->psr_vers == psr_vers) {
sparc_cpu_type = cpu->name;
sparc_fpu_type = "No FPU";
break;
}
cpu++;
}
fpu = &manufacturer_info[psr_impl].fpu_info[0];
while (fpu->fp_vers != -1)
{
if (fpu->fp_vers == fpu_vers) {
sparc_fpu_type = fpu->name;
break;
}
fpu++;
}
}
if (sparc_cpu_type == NULL)
{
printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
psr_impl, psr_vers);
sparc_cpu_type = "Unknown CPU";
}
if (sparc_fpu_type == NULL)
{
printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
psr_impl, fpu_vers);
sparc_fpu_type = "Unknown FPU";
}
}
void __cpuinit cpu_probe(void)
{
int psr_impl, psr_vers, fpu_vers;
int psr;
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);
set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
}
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