117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/*-
|
|
* 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
|
|
|
|
#define SCU_CONTROL_REG 0xf8f00000
|
|
#define SCU_CONTROL_ENABLE (1 << 0)
|
|
|
|
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 scu_handle;
|
|
bus_space_handle_t ocm_handle;
|
|
uint32_t scu_ctrl;
|
|
|
|
/* Map in SCU control register. */
|
|
if (bus_space_map(fdtbus_bs_tag, SCU_CONTROL_REG, 4,
|
|
0, &scu_handle) != 0)
|
|
panic("platform_mp_start_ap: Couldn't map SCU config reg\n");
|
|
|
|
/* Set SCU enable bit. */
|
|
scu_ctrl = bus_space_read_4(fdtbus_bs_tag, scu_handle, 0);
|
|
scu_ctrl |= SCU_CONTROL_ENABLE;
|
|
bus_space_write_4(fdtbus_bs_tag, scu_handle, 0, scu_ctrl);
|
|
|
|
bus_space_unmap(fdtbus_bs_tag, scu_handle, 4);
|
|
|
|
/* 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));
|
|
|
|
bus_space_unmap(fdtbus_bs_tag, ocm_handle, 4);
|
|
|
|
/*
|
|
* The SCU is enabled above 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();
|
|
}
|
|
|
|
void
|
|
platform_ipi_send(cpuset_t cpus, u_int ipi)
|
|
{
|
|
|
|
pic_ipi_send(cpus, ipi);
|
|
}
|