2 * CPU-version specific code
4 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2006-2009 PetaLogix
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
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>
18 #include <linux/bug.h>
19 #include <asm/cpuinfo.h>
20 #include <linux/delay.h>
23 #include <linux/param.h>
25 #include <asm/sections.h>
26 #include <asm/setup.h>
28 static int show_cpuinfo(struct seq_file *m, void *v)
31 char *fpga_family = "Unknown";
32 char *cpu_ver = "Unknown";
35 /* Denormalised to get the fpga family string */
36 for (i = 0; family_string_lookup[i].s != NULL; i++) {
37 if (cpuinfo.fpga_family_code == family_string_lookup[i].k) {
38 fpga_family = (char *)family_string_lookup[i].s;
43 /* Denormalised to get the hw version string */
44 for (i = 0; cpu_ver_lookup[i].s != NULL; i++) {
45 if (cpuinfo.ver_code == cpu_ver_lookup[i].k) {
46 cpu_ver = (char *)cpu_ver_lookup[i].s;
52 "CPU-Family: MicroBlaze\n"
54 "CPU-Ver: %s, %s endian\n"
56 "BogoMips: %lu.%02lu\n",
59 cpuinfo.endian ? "little" : "big",
60 cpuinfo.cpu_clock_freq /
62 cpuinfo.cpu_clock_freq %
64 loops_per_jiffy / (500000 / HZ),
65 (loops_per_jiffy / (5000 / HZ)) % 100);
67 count += seq_printf(m,
68 "HW:\n Shift:\t\t%s\n"
72 (cpuinfo.use_instr & PVR0_USE_BARREL_MASK) ? "yes" : "no",
73 (cpuinfo.use_instr & PVR2_USE_MSR_INSTR) ? "yes" : "no",
74 (cpuinfo.use_instr & PVR2_USE_PCMP_INSTR) ? "yes" : "no",
75 (cpuinfo.use_instr & PVR0_USE_DIV_MASK) ? "yes" : "no");
77 count += seq_printf(m,
81 count += seq_printf(m,
84 (cpuinfo.use_mult & PVR2_USE_MUL64_MASK) ? "v2" :
85 (cpuinfo.use_mult & PVR0_USE_HW_MUL_MASK) ? "v1" : "no",
86 (cpuinfo.use_fpu & PVR2_USE_FPU2_MASK) ? "v2" :
87 (cpuinfo.use_fpu & PVR0_USE_FPU_MASK) ? "v1" : "no");
89 count += seq_printf(m,
90 " Exc:\t\t%s%s%s%s%s%s%s%s\n",
91 (cpuinfo.use_exc & PVR2_OPCODE_0x0_ILL_MASK) ? "op0x0 " : "",
92 (cpuinfo.use_exc & PVR2_UNALIGNED_EXC_MASK) ? "unal " : "",
93 (cpuinfo.use_exc & PVR2_ILL_OPCODE_EXC_MASK) ? "ill " : "",
94 (cpuinfo.use_exc & PVR2_IOPB_BUS_EXC_MASK) ? "iopb " : "",
95 (cpuinfo.use_exc & PVR2_DOPB_BUS_EXC_MASK) ? "dopb " : "",
96 (cpuinfo.use_exc & PVR2_DIV_ZERO_EXC_MASK) ? "zero " : "",
97 (cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "",
98 (cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : "");
100 count += seq_printf(m,
101 "Stream-insns:\t%sprivileged\n",
102 cpuinfo.mmu_privins ? "un" : "");
104 if (cpuinfo.use_icache)
105 count += seq_printf(m,
106 "Icache:\t\t%ukB\tline length:\t%dB\n",
107 cpuinfo.icache_size >> 10,
108 cpuinfo.icache_line_length);
110 count += seq_printf(m, "Icache:\t\tno\n");
112 if (cpuinfo.use_dcache) {
113 count += seq_printf(m,
114 "Dcache:\t\t%ukB\tline length:\t%dB\n",
115 cpuinfo.dcache_size >> 10,
116 cpuinfo.dcache_line_length);
117 seq_printf(m, "Dcache-Policy:\t");
118 if (cpuinfo.dcache_wb)
119 count += seq_printf(m, "write-back\n");
121 count += seq_printf(m, "write-through\n");
123 count += seq_printf(m, "Dcache:\t\tno\n");
125 count += seq_printf(m,
127 cpuinfo.hw_debug ? "yes" : "no");
129 count += seq_printf(m,
135 count += seq_printf(m, "Page size:\t%lu\n", PAGE_SIZE);
139 static void *c_start(struct seq_file *m, loff_t *pos)
143 return i < NR_CPUS ? (void *) (i + 1) : NULL;
146 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
149 return c_start(m, pos);
152 static void c_stop(struct seq_file *m, void *v)
156 const struct seq_operations cpuinfo_op = {
160 .show = show_cpuinfo,