1 /*
2 * Display CPU info in /proc/cpuinfo.
3 *
4 * Copyright (C) 2003, Axis Communications AB.
5 */
6
7 #include <linux/seq_file.h>
8 #include <linux/proc_fs.h>
9 #include <linux/delay.h>
10 #include <linux/param.h>
11
12 #ifdef CONFIG_PROC_FS
13
14 #define HAS_FPU 0x0001
15 #define HAS_MMU 0x0002
16 #define HAS_ETHERNET100 0x0004
17 #define HAS_TOKENRING 0x0008
18 #define HAS_SCSI 0x0010
19 #define HAS_ATA 0x0020
20 #define HAS_USB 0x0040
21 #define HAS_IRQ_BUG 0x0080
22 #define HAS_MMU_BUG 0x0100
23
24 struct cpu_info {
25 char *cpu_model;
26 unsigned short rev;
27 unsigned short cache_size;
28 unsigned short flags;
29 };
30
31 /* Some of these model are here for historical reasons only. */
32 static struct cpu_info cpinfo[] = {
33 {"ETRAX 1", 0, 0, 0},
34 {"ETRAX 2", 1, 0, 0},
35 {"ETRAX 3", 2, 0, 0},
36 {"ETRAX 4", 3, 0, 0},
37 {"Simulator", 7, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
38 {"ETRAX 100", 8, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_IRQ_BUG},
39 {"ETRAX 100", 9, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
40
41 {"ETRAX 100LX", 10, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
42 | HAS_MMU | HAS_MMU_BUG},
43
44 {"ETRAX 100LX v2", 11, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
45 | HAS_MMU},
46
47 {"ETRAX FS", 32, 32, HAS_ETHERNET100 | HAS_ATA | HAS_MMU},
48
49 {"Unknown", 0, 0, 0}
50 };
51
52 int
show_cpuinfo(struct seq_file * m,void * v)53 show_cpuinfo(struct seq_file *m, void *v)
54 {
55 int i;
56 int cpu = (int)v - 1;
57 unsigned long revision;
58 struct cpu_info *info;
59
60 info = &cpinfo[ARRAY_SIZE(cpinfo) - 1];
61
62 #ifdef CONFIG_SMP
63 if (!cpu_online(cpu))
64 return 0;
65 #endif
66
67 revision = rdvr();
68
69 for (i = 0; i < ARRAY_SIZE(cpinfo); i++) {
70 if (cpinfo[i].rev == revision) {
71 info = &cpinfo[i];
72 break;
73 }
74 }
75
76 return seq_printf(m,
77 "processor\t: %d\n"
78 "cpu\t\t: CRIS\n"
79 "cpu revision\t: %lu\n"
80 "cpu model\t: %s\n"
81 "cache size\t: %d KB\n"
82 "fpu\t\t: %s\n"
83 "mmu\t\t: %s\n"
84 "mmu DMA bug\t: %s\n"
85 "ethernet\t: %s Mbps\n"
86 "token ring\t: %s\n"
87 "scsi\t\t: %s\n"
88 "ata\t\t: %s\n"
89 "usb\t\t: %s\n"
90 "bogomips\t: %lu.%02lu\n\n",
91
92 cpu,
93 revision,
94 info->cpu_model,
95 info->cache_size,
96 info->flags & HAS_FPU ? "yes" : "no",
97 info->flags & HAS_MMU ? "yes" : "no",
98 info->flags & HAS_MMU_BUG ? "yes" : "no",
99 info->flags & HAS_ETHERNET100 ? "10/100" : "10",
100 info->flags & HAS_TOKENRING ? "4/16 Mbps" : "no",
101 info->flags & HAS_SCSI ? "yes" : "no",
102 info->flags & HAS_ATA ? "yes" : "no",
103 info->flags & HAS_USB ? "yes" : "no",
104 (loops_per_jiffy * HZ + 500) / 500000,
105 ((loops_per_jiffy * HZ + 500) / 5000) % 100);
106 }
107
108 #endif /* CONFIG_PROC_FS */
109
110 void
show_etrax_copyright(void)111 show_etrax_copyright(void)
112 {
113 printk(KERN_INFO
114 "Linux/CRISv32 port on ETRAX FS (C) 2003, 2004 Axis Communications AB\n");
115 }
116