1 /*
2 * CPU-version specific code
3 *
4 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2006-2009 PetaLogix
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 */
11
12 #include <linux/init.h>
13 #include <linux/string.h>
14 #include <linux/seq_file.h>
15 #include <linux/cpu.h>
16 #include <linux/initrd.h>
17
18 #include <linux/bug.h>
19 #include <asm/cpuinfo.h>
20 #include <linux/delay.h>
21 #include <linux/io.h>
22 #include <asm/page.h>
23 #include <linux/param.h>
24 #include <asm/pvr.h>
25 #include <asm/sections.h>
26 #include <asm/setup.h>
27
28 static int show_cpuinfo(struct seq_file *m, void *v)
29 {
30 char *fpga_family = "Unknown";
31 char *cpu_ver = "Unknown";
32 int i;
33
34 /* Denormalised to get the fpga family string */
35 for (i = 0; family_string_lookup[i].s != NULL; i++) {
36 if (cpuinfo.fpga_family_code == family_string_lookup[i].k) {
37 fpga_family = (char *)family_string_lookup[i].s;
38 break;
39 }
40 }
41
42 /* Denormalised to get the hw version string */
43 for (i = 0; cpu_ver_lookup[i].s != NULL; i++) {
44 if (cpuinfo.ver_code == cpu_ver_lookup[i].k) {
45 cpu_ver = (char *)cpu_ver_lookup[i].s;
46 break;
47 }
48 }
49
50 seq_printf(m,
51 "CPU-Family: MicroBlaze\n"
52 "FPGA-Arch: %s\n"
53 "CPU-Ver: %s, %s endian\n"
54 "CPU-MHz: %d.%02d\n"
55 "BogoMips: %lu.%02lu\n",
56 fpga_family,
57 cpu_ver,
58 cpuinfo.endian ? "little" : "big",
59 cpuinfo.cpu_clock_freq / 1000000,
60 cpuinfo.cpu_clock_freq % 1000000,
61 loops_per_jiffy / (500000 / HZ),
62 (loops_per_jiffy / (5000 / HZ)) % 100);
63
64 seq_printf(m,
65 "HW:\n Shift:\t\t%s\n"
66 " MSR:\t\t%s\n"
67 " PCMP:\t\t%s\n"
68 " DIV:\t\t%s\n",
69 (cpuinfo.use_instr & PVR0_USE_BARREL_MASK) ? "yes" : "no",
70 (cpuinfo.use_instr & PVR2_USE_MSR_INSTR) ? "yes" : "no",
71 (cpuinfo.use_instr & PVR2_USE_PCMP_INSTR) ? "yes" : "no",
72 (cpuinfo.use_instr & PVR0_USE_DIV_MASK) ? "yes" : "no");
73
74 seq_printf(m, " MMU:\t\t%x\n", cpuinfo.mmu);
75
76 seq_printf(m,
77 " MUL:\t\t%s\n"
78 " FPU:\t\t%s\n",
79 (cpuinfo.use_mult & PVR2_USE_MUL64_MASK) ? "v2" :
80 (cpuinfo.use_mult & PVR0_USE_HW_MUL_MASK) ? "v1" : "no",
81 (cpuinfo.use_fpu & PVR2_USE_FPU2_MASK) ? "v2" :
82 (cpuinfo.use_fpu & PVR0_USE_FPU_MASK) ? "v1" : "no");
83
84 seq_printf(m,
85 " Exc:\t\t%s%s%s%s%s%s%s%s\n",
86 (cpuinfo.use_exc & PVR2_OPCODE_0x0_ILL_MASK) ? "op0x0 " : "",
87 (cpuinfo.use_exc & PVR2_UNALIGNED_EXC_MASK) ? "unal " : "",
88 (cpuinfo.use_exc & PVR2_ILL_OPCODE_EXC_MASK) ? "ill " : "",
89 (cpuinfo.use_exc & PVR2_IOPB_BUS_EXC_MASK) ? "iopb " : "",
90 (cpuinfo.use_exc & PVR2_DOPB_BUS_EXC_MASK) ? "dopb " : "",
91 (cpuinfo.use_exc & PVR2_DIV_ZERO_EXC_MASK) ? "zero " : "",
92 (cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "",
93 (cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : "");
94
95 seq_printf(m,
96 "Stream-insns:\t%sprivileged\n",
97 cpuinfo.mmu_privins ? "un" : "");
98
99 if (cpuinfo.use_icache)
100 seq_printf(m,
101 "Icache:\t\t%ukB\tline length:\t%dB\n",
102 cpuinfo.icache_size >> 10,
103 cpuinfo.icache_line_length);
104 else
105 seq_puts(m, "Icache:\t\tno\n");
106
107 if (cpuinfo.use_dcache) {
108 seq_printf(m,
109 "Dcache:\t\t%ukB\tline length:\t%dB\n",
110 cpuinfo.dcache_size >> 10,
111 cpuinfo.dcache_line_length);
112 seq_puts(m, "Dcache-Policy:\t");
113 if (cpuinfo.dcache_wb)
114 seq_puts(m, "write-back\n");
115 else
116 seq_puts(m, "write-through\n");
117 } else {
118 seq_puts(m, "Dcache:\t\tno\n");
119 }
120
121 seq_printf(m,
122 "HW-Debug:\t%s\n",
123 cpuinfo.hw_debug ? "yes" : "no");
124
125 seq_printf(m,
126 "PVR-USR1:\t%02x\n"
127 "PVR-USR2:\t%08x\n",
128 cpuinfo.pvr_user1,
129 cpuinfo.pvr_user2);
130
131 seq_printf(m, "Page size:\t%lu\n", PAGE_SIZE);
132
133 return 0;
134 }
135
136 static void *c_start(struct seq_file *m, loff_t *pos)
137 {
138 int i = *pos;
139
140 return i < NR_CPUS ? (void *) (i + 1) : NULL;
141 }
142
143 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
144 {
145 ++*pos;
146 return c_start(m, pos);
147 }
148
149 static void c_stop(struct seq_file *m, void *v)
150 {
151 }
152
153 const struct seq_operations cpuinfo_op = {
154 .start = c_start,
155 .next = c_next,
156 .stop = c_stop,
157 .show = show_cpuinfo,
158 };
159
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