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 "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" : ""); 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, "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, "Dcache-Policy:\t"); 113 if (cpuinfo.dcache_wb) 114 seq_puts(m, "write-back\n"); 115 else 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"); 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, "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