void __init sbi_init()

in kernel/sbi.c [605:653]

• 45 lines of code
• 8 McCabe index (conditional complexity)

void __init sbi_init(void)
{
	int ret;

	sbi_set_power_off();
	ret = sbi_get_spec_version();
	if (ret > 0)
		sbi_spec_version = ret;

	pr_info("SBI specification v%lu.%lu detected\n",
		sbi_major_version(), sbi_minor_version());

	if (!sbi_spec_is_0_1()) {
		pr_info("SBI implementation ID=0x%lx Version=0x%lx\n",
			sbi_get_firmware_id(), sbi_get_firmware_version());
		if (sbi_probe_extension(SBI_EXT_TIME) > 0) {
			__sbi_set_timer = __sbi_set_timer_v02;
			pr_info("SBI TIME extension detected\n");
		} else {
			__sbi_set_timer = __sbi_set_timer_v01;
		}
		if (sbi_probe_extension(SBI_EXT_IPI) > 0) {
			__sbi_send_ipi	= __sbi_send_ipi_v02;
			pr_info("SBI IPI extension detected\n");
		} else {
			__sbi_send_ipi	= __sbi_send_ipi_v01;
		}
		if (sbi_probe_extension(SBI_EXT_RFENCE) > 0) {
			__sbi_rfence	= __sbi_rfence_v02;
			pr_info("SBI RFENCE extension detected\n");
		} else {
			__sbi_rfence	= __sbi_rfence_v01;
		}
		if ((sbi_spec_version >= sbi_mk_version(0, 3)) &&
		    (sbi_probe_extension(SBI_EXT_SRST) > 0)) {
			pr_info("SBI SRST extension detected\n");
			pm_power_off = sbi_srst_power_off;
			sbi_srst_reboot_nb.notifier_call = sbi_srst_reboot;
			sbi_srst_reboot_nb.priority = 192;
			register_restart_handler(&sbi_srst_reboot_nb);
		}
	} else {
		__sbi_set_timer = __sbi_set_timer_v01;
		__sbi_send_ipi	= __sbi_send_ipi_v01;
		__sbi_rfence	= __sbi_rfence_v01;
	}

	riscv_set_ipi_ops(&sbi_ipi_ops);
}