1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* 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/sched.h>
#include <linux/smp.h>
#include <asm/asi.h>
#include <asm/system.h>
#include <asm/fpumacro.h>
struct cpu_iu_info {
short manuf;
short impl;
char* cpu_name; /* should be enough I hope... */
};
struct cpu_fp_info {
short manuf;
short impl;
char fpu_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[] = {
{ 0x17, 0x10, 0, "UltraSparc I integrated FPU"},
{ 0x22, 0x10, 0, "UltraSparc II integrated FPU"},
{ 0x17, 0x11, 0, "UltraSparc II integrated FPU"},
{ 0x17, 0x12, 0, "UltraSparc III integrated FPU"},
};
#define NSPARCFPU (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info))
struct cpu_iu_info linux_sparc_chips[] = {
{ 0x17, 0x10, "TI UltraSparc I (SpitFire)"},
{ 0x22, 0x10, "TI UltraSparc II (BlackBird)"},
{ 0x17, 0x11, "TI UltraSparc II (BlackBird)"},
{ 0x17, 0x12, "TI UltraSparc III (Cheetah)"}, /* A guess... */
};
#define NSPARCCHIPS (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info))
char *sparc_cpu_type[NCPUS] = { "cpu-oops", "cpu-oops1", "cpu-oops2", "cpu-oops3" };
char *sparc_fpu_type[NCPUS] = { "fpu-oops", "fpu-oops1", "fpu-oops2", "fpu-oops3" };
unsigned int fsr_storage;
__initfunc(void cpu_probe(void))
{
int manuf, impl;
unsigned i, cpuid;
long ver, fpu_vers;
long fprs;
cpuid = smp_processor_id();
fprs = fprs_read ();
fprs_write (FPRS_FEF);
__asm__ __volatile__ ("rdpr %%ver, %0; stx %%fsr, [%1]" : "=r" (ver) : "r" (&fpu_vers));
fprs_write (fprs);
manuf = ((ver >> 48)&0xffff);
impl = ((ver >> 32)&0xffff);
fpu_vers = ((fpu_vers>>17)&0x7);
for(i = 0; i<NSPARCCHIPS; i++) {
if(linux_sparc_chips[i].manuf == manuf)
if(linux_sparc_chips[i].impl == impl) {
sparc_cpu_type[cpuid] = linux_sparc_chips[i].cpu_name;
break;
}
}
if(i==NSPARCCHIPS) {
printk("DEBUG: manuf = 0x%x impl = 0x%x\n", manuf,
impl);
sparc_cpu_type[cpuid] = "Unknow CPU";
}
for(i = 0; i<NSPARCFPU; i++) {
if(linux_sparc_fpu[i].manuf == manuf && linux_sparc_fpu[i].impl == impl)
if(linux_sparc_fpu[i].fpu_vers == fpu_vers) {
sparc_fpu_type[cpuid] = linux_sparc_fpu[i].fp_name;
break;
}
}
if(i == NSPARCFPU) {
printk("DEBUG: manuf = 0x%x impl = 0x%x fsr.vers = 0x%x\n", manuf, impl,
(unsigned)fpu_vers);
sparc_fpu_type[cpuid] = "Unknown FPU";
}
}
|
