1 /*- 2 * Copyright (c) 2012 Olivier Houchard. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #include <sys/cdefs.h> 26 __FBSDID("$FreeBSD$"); 27 #include <sys/param.h> 28 #include <sys/systm.h> 29 #include <sys/bus.h> 30 #include <sys/lock.h> 31 #include <sys/mutex.h> 32 #include <sys/smp.h> 33 34 #include <vm/vm.h> 35 #include <vm/pmap.h> 36 37 #include <machine/cpu.h> 38 #include <machine/smp.h> 39 #include <machine/fdt.h> 40 #include <machine/intr.h> 41 #include <machine/platformvar.h> 42 43 #include <arm/ti/ti_smc.h> 44 #include <arm/ti/omap4/omap4_smc.h> 45 #include <arm/ti/omap4/omap4_mp.h> 46 47 void 48 omap4_mp_setmaxid(platform_t plat) 49 { 50 51 if (mp_ncpus != 0) 52 return; 53 mp_maxid = 1; 54 mp_ncpus = 2; 55 } 56 57 void 58 omap4_mp_start_ap(platform_t plat) 59 { 60 bus_addr_t scu_addr; 61 62 if (bus_space_map(fdtbus_bs_tag, 0x48240000, 0x1000, 0, &scu_addr) != 0) 63 panic("Couldn't map the SCU\n"); 64 /* Enable the SCU */ 65 *(volatile unsigned int *)scu_addr |= 1; 66 //*(volatile unsigned int *)(scu_addr + 0x30) |= 1; 67 dcache_wbinv_poc_all(); 68 69 ti_smc0(0x200, 0xfffffdff, MODIFY_AUX_CORE_0); 70 ti_smc0(pmap_kextract((vm_offset_t)mpentry), 0, WRITE_AUX_CORE_1); 71 dsb(); 72 sev(); 73 bus_space_unmap(fdtbus_bs_tag, scu_addr, 0x1000); 74 } 75