nios2/kernel/cpuinfo.c

6  * Based on cpuinfo.c from microblaze
15 #include <asm/cpuinfo.h>
17 struct cpuinfo cpuinfo;
46 	cpuinfo.cpu_clock_freq = fcpu(cpu, "clock-frequency");
50 		strscpy(cpuinfo.cpu_impl, str, sizeof(cpuinfo.cpu_impl));
52 		strcpy(cpuinfo.cpu_impl, "<unknown>");
54 	cpuinfo.has_div = of_property_read_bool(cpu, "altr,has-div");
55 	cpuinfo.has_mul = of_property_read_bool(cpu, "altr,has-mul");
56 	cpuinfo.has_mulx = of_property_read_bool(cpu, "altr,has-mulx");
57 	cpuinfo.has_bmx = of_property_read_bool(cpu, "altr,has-bmx");
58 	cpuinfo.has_cdx = of_property_read_bool(cpu, "altr,has-cdx");
59 	cpuinfo.mmu = of_property_read_bool(cpu, "altr,has-mmu");
61 	if (IS_ENABLED(CONFIG_NIOS2_HW_DIV_SUPPORT) && !cpuinfo.has_div)
64 	if (IS_ENABLED(CONFIG_NIOS2_HW_MUL_SUPPORT) && !cpuinfo.has_mul)
67 	if (IS_ENABLED(CONFIG_NIOS2_HW_MULX_SUPPORT) && !cpuinfo.has_mulx)
70 	if (IS_ENABLED(CONFIG_NIOS2_BMX_SUPPORT) && !cpuinfo.has_bmx)
73 	if (IS_ENABLED(CONFIG_NIOS2_CDX_SUPPORT) && !cpuinfo.has_cdx)
76 	cpuinfo.tlb_num_ways = fcpu(cpu, "altr,tlb-num-ways");
77 	if (!cpuinfo.tlb_num_ways)
80 	cpuinfo.icache_line_size = fcpu(cpu, "icache-line-size");
81 	cpuinfo.icache_size = fcpu(cpu, "icache-size");
82 	if (CONFIG_NIOS2_ICACHE_SIZE != cpuinfo.icache_size)
86 		CONFIG_NIOS2_ICACHE_SIZE, cpuinfo.icache_size);
88 	cpuinfo.dcache_line_size = fcpu(cpu, "dcache-line-size");
89 	if (CONFIG_NIOS2_DCACHE_LINE_SIZE != cpuinfo.dcache_line_size)
93 		CONFIG_NIOS2_DCACHE_LINE_SIZE, cpuinfo.dcache_line_size);
94 	cpuinfo.dcache_size = fcpu(cpu, "dcache-size");
95 	if (CONFIG_NIOS2_DCACHE_SIZE != cpuinfo.dcache_size)
99 			CONFIG_NIOS2_DCACHE_SIZE, cpuinfo.dcache_size);
101 	cpuinfo.tlb_pid_num_bits = fcpu(cpu, "altr,pid-num-bits");
102 	cpuinfo.tlb_num_ways_log2 = ilog2(cpuinfo.tlb_num_ways);
103 	cpuinfo.tlb_num_entries = fcpu(cpu, "altr,tlb-num-entries");
104 	cpuinfo.tlb_num_lines = cpuinfo.tlb_num_entries / cpuinfo.tlb_num_ways;
105 	cpuinfo.tlb_ptr_sz = fcpu(cpu, "altr,tlb-ptr-sz");
107 	cpuinfo.reset_addr = fcpu(cpu, "altr,reset-addr");
108 	cpuinfo.exception_addr = fcpu(cpu, "altr,exception-addr");
109 	cpuinfo.fast_tlb_miss_exc_addr = fcpu(cpu, "altr,fast-tlb-miss-addr");
121 	const u32 clockfreq = cpuinfo.cpu_clock_freq;
131 		   cpuinfo.cpu_impl,
133 		   cpuinfo.mmu ? "present" : "none",
146 		   cpuinfo.has_mul ? "yes" : "no",
147 		   cpuinfo.has_mulx ? "yes" : "no",
148 		   cpuinfo.has_div ? "yes" : "no",
149 		   cpuinfo.has_bmx ? "yes" : "no",
150 		   cpuinfo.has_cdx ? "yes" : "no");
154 		   cpuinfo.icache_size >> 10,
155 		   cpuinfo.icache_line_size);
159 		   cpuinfo.dcache_size >> 10,
160 		   cpuinfo.dcache_line_size);
164 		   cpuinfo.tlb_num_ways,
165 		   cpuinfo.tlb_num_entries,
166 		   cpuinfo.tlb_pid_num_bits);