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