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/*-
* Copyright (c) 2013 Thomas Skibo. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/smp.h>
#include <machine/smp.h>
#include <machine/fdt.h>
#include <machine/intr.h>
#include <arm/xilinx/zy7_reg.h>
#define ZYNQ7_CPU1_ENTRY 0xfffffff0
void
platform_mp_init_secondary(void)
{
arm_init_secondary_ic();
}
void
platform_mp_setmaxid(void)
{
mp_maxid = 1;
}
int
platform_mp_probe(void)
{
mp_ncpus = 2;
return (1);
}
void
platform_mp_start_ap(void)
{
bus_space_handle_t ocm_handle;
/* Map in magic location to give entry address to CPU1. */
if (bus_space_map(fdtbus_bs_tag, ZYNQ7_CPU1_ENTRY, 4,
0, &ocm_handle) != 0)
panic("platform_mp_start_ap: Couldn't map OCM\n");
/* Write start address for CPU1. */
bus_space_write_4(fdtbus_bs_tag, ocm_handle, 0,
pmap_kextract((vm_offset_t)mpentry));
/*
* The SCU is enabled by the BOOTROM but I think the second CPU doesn't
* turn on filtering until after the wake-up below. I think that's why
* things don't work if I don't put these cache ops here. Also, the
* magic location, 0xfffffff0, isn't in the SCU's filtering range so it
* needs a write-back too.
*/
cpu_idcache_wbinv_all();
cpu_l2cache_wbinv_all();
/* Wake up CPU1. */
armv7_sev();
bus_space_unmap(fdtbus_bs_tag, ocm_handle, 4);
}
void
platform_ipi_send(cpuset_t cpus, u_int ipi)
{
pic_ipi_send(cpus, ipi);
}
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