1 /*- 2 * Copyright (c) 2015 Andrew Turner 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/bus.h> 31 #include <sys/pcpu.h> 32 #include <sys/smp.h> 33 34 #include <vm/vm.h> 35 #include <vm/pmap.h> 36 37 #include <machine/intr.h> 38 #include <machine/platformvar.h> 39 #include <machine/smp.h> 40 41 #include <dev/ofw/openfirm.h> 42 #include <dev/ofw/ofw_cpu.h> 43 #include <dev/psci/psci.h> 44 45 #include <arm/qemu/virt_mp.h> 46 47 static int running_cpus; 48 49 static bool 50 virt_start_ap(u_int id, phandle_t node, u_int addr_cells, pcell_t *reg) 51 { 52 int err; 53 54 if (running_cpus >= mp_ncpus) 55 return (false); 56 running_cpus++; 57 58 err = psci_cpu_on(*reg, pmap_kextract((vm_offset_t)mpentry), id); 59 60 if (err != PSCI_RETVAL_SUCCESS) 61 return (false); 62 63 return (true); 64 } 65 66 void 67 virt_mp_start_ap(platform_t plat) 68 { 69 70 ofw_cpu_early_foreach(virt_start_ap, true); 71 } 72