omap4_mp.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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__FBSDID("$FreeBSD: stable/11/sys/arm/ti/omap4/omap4_mp.c 330897 2018-03-14 03:19:51Z eadler $"); 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/bus.h> 32#include <sys/lock.h> 33#include <sys/mutex.h> 34#include <sys/smp.h> 35 36#include <vm/vm.h> 37#include <vm/pmap.h> 38 39#include <machine/cpu.h> 40#include <machine/smp.h> 41#include <machine/fdt.h> 42#include <machine/intr.h> 43 44#include <arm/ti/ti_smc.h> 45#include <arm/ti/omap4/omap4_smc.h> 46 47void 48platform_mp_setmaxid(void) 49{ 50 51 mp_maxid = 1; 52 mp_ncpus = 2; 53} 54 55void 56platform_mp_start_ap(void) 57{ 58 bus_addr_t scu_addr; 59 60 if (bus_space_map(fdtbus_bs_tag, 0x48240000, 0x1000, 0, &scu_addr) != 0) 61 panic("Couldn't map the SCU\n"); 62 /* Enable the SCU */ 63 *(volatile unsigned int *)scu_addr |= 1; 64 //*(volatile unsigned int *)(scu_addr + 0x30) |= 1; 65 dcache_wbinv_poc_all(); 66 67 ti_smc0(0x200, 0xfffffdff, MODIFY_AUX_CORE_0); 68 ti_smc0(pmap_kextract((vm_offset_t)mpentry), 0, WRITE_AUX_CORE_1); 69 dsb(); 70 sev(); 71 bus_space_unmap(fdtbus_bs_tag, scu_addr, 0x1000); 72} 73