1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 Olivier Houchard. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/bus.h> 31 #include <sys/lock.h> 32 #include <sys/mutex.h> 33 #include <sys/smp.h> 34 35 #include <vm/vm.h> 36 #include <vm/pmap.h> 37 38 #include <machine/cpu.h> 39 #include <machine/smp.h> 40 #include <machine/fdt.h> 41 #include <machine/intr.h> 42 #include <machine/platformvar.h> 43 44 #include <arm/ti/ti_smc.h> 45 #include <arm/ti/omap4/omap4_machdep.h> 46 #include <arm/ti/omap4/omap4_smc.h> 47 48 void 49 omap4_mp_setmaxid(platform_t plat) 50 { 51 52 if (mp_ncpus != 0) 53 return; 54 mp_maxid = 1; 55 mp_ncpus = 2; 56 } 57 58 void 59 omap4_mp_start_ap(platform_t plat) 60 { 61 bus_addr_t scu_addr; 62 63 if (bus_space_map(fdtbus_bs_tag, 0x48240000, 0x1000, 0, &scu_addr) != 0) 64 panic("Couldn't map the SCU\n"); 65 /* Enable the SCU */ 66 *(volatile unsigned int *)scu_addr |= 1; 67 //*(volatile unsigned int *)(scu_addr + 0x30) |= 1; 68 dcache_wbinv_poc_all(); 69 70 ti_smc0(0x200, 0xfffffdff, MODIFY_AUX_CORE_0); 71 ti_smc0(pmap_kextract((vm_offset_t)mpentry), 0, WRITE_AUX_CORE_1); 72 dsb(); 73 sev(); 74 bus_space_unmap(fdtbus_bs_tag, scu_addr, 0x1000); 75 } 76