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 | fmt: "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, fmt: " 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, s: "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, s: "Dcache-Policy:\t" ); |
113 | if (cpuinfo.dcache_wb) |
114 | seq_puts(m, s: "write-back\n" ); |
115 | else |
116 | seq_puts(m, s: "write-through\n" ); |
117 | } else { |
118 | seq_puts(m, s: "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, fmt: "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 | |