static int show_cpuinfo()

in kernel/setup.c [307:367]

• 56 lines of code
• 7 McCabe index (conditional complexity)

static int show_cpuinfo(struct seq_file *m, void *v)
{
	unsigned int vr, cpucfgr;
	unsigned int avr;
	unsigned int version;
	struct cpuinfo_or1k *cpuinfo = v;

	vr = mfspr(SPR_VR);
	cpucfgr = mfspr(SPR_CPUCFGR);

#ifdef CONFIG_SMP
	seq_printf(m, "processor\t\t: %d\n", cpuinfo->coreid);
#endif
	if (vr & SPR_VR_UVRP) {
		vr = mfspr(SPR_VR2);
		version = vr & SPR_VR2_VER;
		avr = mfspr(SPR_AVR);
		seq_printf(m, "cpu architecture\t: "
			   "OpenRISC 1000 (%d.%d-rev%d)\n",
			   (avr >> 24) & 0xff,
			   (avr >> 16) & 0xff,
			   (avr >> 8) & 0xff);
		seq_printf(m, "cpu implementation id\t: 0x%x\n",
			   (vr & SPR_VR2_CPUID) >> 24);
		seq_printf(m, "cpu version\t\t: 0x%x\n", version);
	} else {
		version = (vr & SPR_VR_VER) >> 24;
		seq_printf(m, "cpu\t\t\t: OpenRISC-%x\n", version);
		seq_printf(m, "revision\t\t: %d\n", vr & SPR_VR_REV);
	}
	seq_printf(m, "frequency\t\t: %ld\n", loops_per_jiffy * HZ);
	seq_printf(m, "dcache size\t\t: %d bytes\n", cpuinfo->dcache_size);
	seq_printf(m, "dcache block size\t: %d bytes\n",
		   cpuinfo->dcache_block_size);
	seq_printf(m, "dcache ways\t\t: %d\n", cpuinfo->dcache_ways);
	seq_printf(m, "icache size\t\t: %d bytes\n", cpuinfo->icache_size);
	seq_printf(m, "icache block size\t: %d bytes\n",
		   cpuinfo->icache_block_size);
	seq_printf(m, "icache ways\t\t: %d\n", cpuinfo->icache_ways);
	seq_printf(m, "immu\t\t\t: %d entries, %lu ways\n",
		   1 << ((mfspr(SPR_DMMUCFGR) & SPR_DMMUCFGR_NTS) >> 2),
		   1 + (mfspr(SPR_DMMUCFGR) & SPR_DMMUCFGR_NTW));
	seq_printf(m, "dmmu\t\t\t: %d entries, %lu ways\n",
		   1 << ((mfspr(SPR_IMMUCFGR) & SPR_IMMUCFGR_NTS) >> 2),
		   1 + (mfspr(SPR_IMMUCFGR) & SPR_IMMUCFGR_NTW));
	seq_printf(m, "bogomips\t\t: %lu.%02lu\n",
		   (loops_per_jiffy * HZ) / 500000,
		   ((loops_per_jiffy * HZ) / 5000) % 100);

	seq_puts(m, "features\t\t: ");
	seq_printf(m, "%s ", cpucfgr & SPR_CPUCFGR_OB32S ? "orbis32" : "");
	seq_printf(m, "%s ", cpucfgr & SPR_CPUCFGR_OB64S ? "orbis64" : "");
	seq_printf(m, "%s ", cpucfgr & SPR_CPUCFGR_OF32S ? "orfpx32" : "");
	seq_printf(m, "%s ", cpucfgr & SPR_CPUCFGR_OF64S ? "orfpx64" : "");
	seq_printf(m, "%s ", cpucfgr & SPR_CPUCFGR_OV64S ? "orvdx64" : "");
	seq_puts(m, "\n");

	seq_puts(m, "\n");

	return 0;
}