Function platform_start_ap

freebsd/mips/cavium/octeon_mp.c:130–156

}

int
platform_start_ap(int cpuid)
{
	uint64_t cores_in_reset;

	/* 
	 * Release the core if it is in reset, and let it rev up a bit.
	 * The real synchronization happens below via octeon_ap_boot.
	 */
	cores_in_reset = cvmx_read_csr(CVMX_CIU_PP_RST);
	if (cores_in_reset & (1ULL << cpuid)) {
	    if (bootverbose)
		printf ("AP #%d still in reset\n", cpuid);
	    cores_in_reset &= ~(1ULL << cpuid);
	    cvmx_write_csr(CVMX_CIU_PP_RST, (uint64_t)(cores_in_reset));
	    DELAY(2000);    /* Give it a moment to start */
	}

	if (atomic_cmpset_32(&octeon_ap_boot, ~0, cpuid) == 0)
		return (-1);
	for (;;) {
		DELAY(1000);
		if (atomic_cmpset_32(&octeon_ap_boot, 0, ~0) != 0)
			return (0);
		printf("Waiting for cpu%d to start\n", cpuid);
	}
}