void __init collect_boot_cpu_data()

in kernel/processor.c [227:299]

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

void __init collect_boot_cpu_data(void)
{
	unsigned long cr16_seed;
	char orig_prod_num[64], current_prod_num[64], serial_no[64];

	memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));

	cr16_seed = get_cycles();
	add_device_randomness(&cr16_seed, sizeof(cr16_seed));

	boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */

	/* get CPU-Model Information... */
#define p ((unsigned long *)&boot_cpu_data.pdc.model)
	if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK) {
		printk(KERN_INFO 
			"model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
			p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);

		add_device_randomness(&boot_cpu_data.pdc.model,
			sizeof(boot_cpu_data.pdc.model));
	}
#undef p

	if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK) {
		printk(KERN_INFO "vers  %08lx\n", 
			boot_cpu_data.pdc.versions);

		add_device_randomness(&boot_cpu_data.pdc.versions,
			sizeof(boot_cpu_data.pdc.versions));
	}

	if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK) {
		printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n",
			(boot_cpu_data.pdc.cpuid >> 5) & 127,
			boot_cpu_data.pdc.cpuid & 31,
			boot_cpu_data.pdc.cpuid);

		add_device_randomness(&boot_cpu_data.pdc.cpuid,
			sizeof(boot_cpu_data.pdc.cpuid));
	}

	if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK)
		printk(KERN_INFO "capabilities 0x%lx\n",
			boot_cpu_data.pdc.capabilities);

	if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK)
		printk(KERN_INFO "model %s\n",
			boot_cpu_data.pdc.sys_model_name);

	dump_stack_set_arch_desc("%s", boot_cpu_data.pdc.sys_model_name);

	boot_cpu_data.hversion =  boot_cpu_data.pdc.model.hversion;
	boot_cpu_data.sversion =  boot_cpu_data.pdc.model.sversion;

	boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
	boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
	boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];

#ifdef CONFIG_PA8X00
	_parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) ||
				(boot_cpu_data.cpu_type == mako2);
#endif

	if (pdc_model_platform_info(orig_prod_num, current_prod_num, serial_no) == PDC_OK) {
		printk(KERN_INFO "product %s, original product %s, S/N: %s\n",
			current_prod_num[0] ? current_prod_num : "n/a",
			orig_prod_num, serial_no);
		add_device_randomness(orig_prod_num, strlen(orig_prod_num));
		add_device_randomness(current_prod_num, strlen(current_prod_num));
		add_device_randomness(serial_no, strlen(serial_no));
	}
}