C++ (Cpp) cpu_get_cpuid示例

示例#1

static int
arm64_cpu_attach(device_t dev)
{
    const uint32_t *reg;
    size_t reg_size;
    u_int cpuid;
    int i;

    cpuid = device_get_unit(dev);

    if (cpuid >= MAXCPU || cpuid > mp_maxid)
        return (EINVAL);
    KASSERT(cpu_list[cpuid] == NULL, ("Already have cpu %u", cpuid));

    reg = cpu_get_cpuid(dev, &reg_size);
    if (reg == NULL)
        return (EINVAL);

    if (bootverbose) {
        device_printf(dev, "register <");
        for (i = 0; i < reg_size; i++)
            printf("%s%x", (i == 0) ? "" : " ", reg[i]);
        printf(">\n");
    }

    /* Set the device to start it later */
    cpu_list[cpuid] = dev;

    return (0);
}

示例#2

文件： report_platform.c 项目： canistation/coreboot

static void report_cpu_info(void)
{
	struct cpuid_result cpuidr;
	u32 i, index, cpu_id, cpu_feature_flag;
	char cpu_string[50], *cpu_name = cpu_string; /* 48 bytes are reported */
	int vt, txt, aes;
	msr_t microcode_ver;
	static const char *const mode[] = {"NOT ", ""};
	const char *cpu_type = "Unknown";
	u32 p[13];

	index = 0x80000000;
	cpuidr = cpuid(index);
	if (cpuidr.eax < 0x80000004) {
		strcpy(cpu_string, "Platform info not available");
	} else {
		int j=0;

		for (i = 2; i <= 4; i++) {
			cpuidr = cpuid(index + i);
			p[j++] = cpuidr.eax;
			p[j++] = cpuidr.ebx;
			p[j++] = cpuidr.ecx;
			p[j++] = cpuidr.edx;
		}
		p[12]=0;
		cpu_name = (char *)p;
	}
	/* Skip leading spaces in CPU name string */
	while (cpu_name[0] == ' ')
		cpu_name++;

	microcode_ver.lo = 0;
	microcode_ver.hi = 0;
	wrmsr(BIOS_SIGN_ID, microcode_ver);
	cpu_id = cpu_get_cpuid();
	microcode_ver = rdmsr(BIOS_SIGN_ID);

	/* Look for string to match the name */
	for (i = 0; i < ARRAY_SIZE(cpu_table); i++) {
		if (cpu_table[i].cpuid == cpu_id) {
			cpu_type = cpu_table[i].name;
			break;
		}
	}

	printk(BIOS_DEBUG, "CPU: %s\n", cpu_name);
	printk(BIOS_DEBUG, "CPU: ID %x, %s, ucode: %08x\n",
	       cpu_id, cpu_type, microcode_ver.hi);

	cpu_feature_flag = cpu_get_feature_flags_ecx();
	aes = (cpu_feature_flag & CPUID_AES) ? 1 : 0;
	txt = (cpu_feature_flag & CPUID_SMX) ? 1 : 0;
	vt = (cpu_feature_flag & CPUID_VMX) ? 1 : 0;
	printk(BIOS_DEBUG,
		"CPU: AES %ssupported, TXT %ssupported, VT %ssupported\n",
		mode[aes], mode[txt], mode[vt]);
}