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b0c62724 MS |
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 | { | |
b0c62724 MS |
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 | ||
81f0cd97 JP |
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" : ""); | |
8904976e | 98 | |
b0c62724 | 99 | if (cpuinfo.use_icache) |
81f0cd97 JP |
100 | seq_printf(m, |
101 | "Icache:\t\t%ukB\tline length:\t%dB\n", | |
102 | cpuinfo.icache_size >> 10, | |
103 | cpuinfo.icache_line_length); | |
b0c62724 | 104 | else |
81f0cd97 | 105 | seq_puts(m, "Icache:\t\tno\n"); |
b0c62724 | 106 | |
e051af57 | 107 | if (cpuinfo.use_dcache) { |
81f0cd97 JP |
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"); | |
e051af57 | 113 | if (cpuinfo.dcache_wb) |
81f0cd97 | 114 | seq_puts(m, "write-back\n"); |
e051af57 | 115 | else |
81f0cd97 JP |
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"); | |
b0c62724 | 124 | |
81f0cd97 JP |
125 | seq_printf(m, |
126 | "PVR-USR1:\t%02x\n" | |
127 | "PVR-USR2:\t%08x\n", | |
128 | cpuinfo.pvr_user1, | |
129 | cpuinfo.pvr_user2); | |
b0c62724 | 130 | |
81f0cd97 | 131 | seq_printf(m, "Page size:\t%lu\n", PAGE_SIZE); |
b0c62724 MS |
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 | }; |