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 int count = 0; 31 char *fpga_family = "Unknown"; 32 char *cpu_ver = "Unknown"; 33 int i; 34 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; 39 break; 40 } 41 } 42 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; 47 break; 48 } 49 } 50 51 count = seq_printf(m, 52 "CPU-Family: MicroBlaze\n" 53 "FPGA-Arch: %s\n" 54 "CPU-Ver: %s, %s endian\n" 55 "CPU-MHz: %d.%02d\n" 56 "BogoMips: %lu.%02lu\n", 57 fpga_family, 58 cpu_ver, 59 cpuinfo.endian ? "little" : "big", 60 cpuinfo.cpu_clock_freq / 61 1000000, 62 cpuinfo.cpu_clock_freq % 63 1000000, 64 loops_per_jiffy / (500000 / HZ), 65 (loops_per_jiffy / (5000 / HZ)) % 100); 66 67 count += seq_printf(m, 68 "HW:\n Shift:\t\t%s\n" 69 " MSR:\t\t%s\n" 70 " PCMP:\t\t%s\n" 71 " DIV:\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"); 76 77 count += seq_printf(m, 78 " MMU:\t\t%x\n", 79 cpuinfo.mmu); 80 81 count += seq_printf(m, 82 " MUL:\t\t%s\n" 83 " FPU:\t\t%s\n", 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"); 88 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 " : ""); 99 100 if (cpuinfo.use_icache) 101 count += seq_printf(m, 102 "Icache:\t\t%ukB\tline length:\t%dB\n", 103 cpuinfo.icache_size >> 10, 104 cpuinfo.icache_line_length); 105 else 106 count += seq_printf(m, "Icache:\t\tno\n"); 107 108 if (cpuinfo.use_dcache) { 109 count += seq_printf(m, 110 "Dcache:\t\t%ukB\tline length:\t%dB\n", 111 cpuinfo.dcache_size >> 10, 112 cpuinfo.dcache_line_length); 113 if (cpuinfo.dcache_wb) 114 count += seq_printf(m, "\t\twrite-back\n"); 115 else 116 count += seq_printf(m, "\t\twrite-through\n"); 117 } else 118 count += seq_printf(m, "Dcache:\t\tno\n"); 119 120 count += seq_printf(m, 121 "HW-Debug:\t%s\n", 122 cpuinfo.hw_debug ? "yes" : "no"); 123 124 count += seq_printf(m, 125 "PVR-USR1:\t%02x\n" 126 "PVR-USR2:\t%08x\n", 127 cpuinfo.pvr_user1, 128 cpuinfo.pvr_user2); 129 130 count += seq_printf(m, "Page size:\t%lu\n", PAGE_SIZE); 131 return 0; 132 } 133 134 static void *c_start(struct seq_file *m, loff_t *pos) 135 { 136 int i = *pos; 137 138 return i < NR_CPUS ? (void *) (i + 1) : NULL; 139 } 140 141 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 142 { 143 ++*pos; 144 return c_start(m, pos); 145 } 146 147 static void c_stop(struct seq_file *m, void *v) 148 { 149 } 150 151 const struct seq_operations cpuinfo_op = { 152 .start = c_start, 153 .next = c_next, 154 .stop = c_stop, 155 .show = show_cpuinfo, 156 }; 157