1265099Sian/*- 2265099Sian * Copyright (c) 2013 Thomas Skibo. All rights reserved. 3265099Sian * 4265099Sian * Redistribution and use in source and binary forms, with or without 5265099Sian * modification, are permitted provided that the following conditions 6265099Sian * are met: 7265099Sian * 1. Redistributions of source code must retain the above copyright 8265099Sian * notice, this list of conditions and the following disclaimer. 9265099Sian * 2. Redistributions in binary form must reproduce the above copyright 10265099Sian * notice, this list of conditions and the following disclaimer in the 11265099Sian * documentation and/or other materials provided with the distribution. 12265099Sian * 13265099Sian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14265099Sian * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15265099Sian * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16265099Sian * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17265099Sian * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18265099Sian * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19265099Sian * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20265099Sian * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21265099Sian * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22265099Sian * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23265099Sian */ 24265099Sian 25265099Sian#include <sys/cdefs.h> 26265099Sian__FBSDID("$FreeBSD: releng/11.0/sys/arm/xilinx/zy7_mp.c 296100 2016-02-26 16:04:47Z andrew $"); 27265099Sian#include <sys/param.h> 28265099Sian#include <sys/systm.h> 29265099Sian#include <sys/bus.h> 30265099Sian#include <sys/lock.h> 31265099Sian#include <sys/mutex.h> 32265099Sian#include <sys/smp.h> 33265099Sian 34281092Sandrew#include <vm/vm.h> 35281092Sandrew#include <vm/pmap.h> 36281092Sandrew 37295319Smmel#include <machine/cpu.h> 38265099Sian#include <machine/smp.h> 39265099Sian#include <machine/fdt.h> 40265099Sian#include <machine/intr.h> 41265099Sian 42265099Sian#include <arm/xilinx/zy7_reg.h> 43265099Sian 44265099Sian#define ZYNQ7_CPU1_ENTRY 0xfffffff0 45265099Sian 46277265Sian#define SCU_CONTROL_REG 0xf8f00000 47277265Sian#define SCU_CONTROL_ENABLE (1 << 0) 48277265Sian 49265099Sianvoid 50265099Sianplatform_mp_setmaxid(void) 51265099Sian{ 52265099Sian 53265099Sian mp_maxid = 1; 54290547Stijl mp_ncpus = 2; 55265099Sian} 56265099Sian 57265099Sianvoid 58265099Sianplatform_mp_start_ap(void) 59265099Sian{ 60277265Sian bus_space_handle_t scu_handle; 61265099Sian bus_space_handle_t ocm_handle; 62277265Sian uint32_t scu_ctrl; 63265099Sian 64277265Sian /* Map in SCU control register. */ 65277265Sian if (bus_space_map(fdtbus_bs_tag, SCU_CONTROL_REG, 4, 66277265Sian 0, &scu_handle) != 0) 67277265Sian panic("platform_mp_start_ap: Couldn't map SCU config reg\n"); 68277265Sian 69277265Sian /* Set SCU enable bit. */ 70277265Sian scu_ctrl = bus_space_read_4(fdtbus_bs_tag, scu_handle, 0); 71277265Sian scu_ctrl |= SCU_CONTROL_ENABLE; 72277265Sian bus_space_write_4(fdtbus_bs_tag, scu_handle, 0, scu_ctrl); 73277265Sian 74277265Sian bus_space_unmap(fdtbus_bs_tag, scu_handle, 4); 75277265Sian 76265099Sian /* Map in magic location to give entry address to CPU1. */ 77265099Sian if (bus_space_map(fdtbus_bs_tag, ZYNQ7_CPU1_ENTRY, 4, 78265099Sian 0, &ocm_handle) != 0) 79265099Sian panic("platform_mp_start_ap: Couldn't map OCM\n"); 80265099Sian 81265099Sian /* Write start address for CPU1. */ 82265099Sian bus_space_write_4(fdtbus_bs_tag, ocm_handle, 0, 83265099Sian pmap_kextract((vm_offset_t)mpentry)); 84265099Sian 85277265Sian bus_space_unmap(fdtbus_bs_tag, ocm_handle, 4); 86277265Sian 87265099Sian /* 88277265Sian * The SCU is enabled above but I think the second CPU doesn't 89265099Sian * turn on filtering until after the wake-up below. I think that's why 90265099Sian * things don't work if I don't put these cache ops here. Also, the 91265099Sian * magic location, 0xfffffff0, isn't in the SCU's filtering range so it 92265099Sian * needs a write-back too. 93265099Sian */ 94295319Smmel dcache_wbinv_poc_all(); 95265099Sian 96265099Sian /* Wake up CPU1. */ 97265099Sian armv7_sev(); 98265099Sian} 99