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/*-
* Copyright (c) 2013-2014 Ruslan Bukin <br@bsdpad.com>
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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>
#define EXYNOS_CHIPID 0x10000000
#define EXYNOS5250_SOC_ID 0x43520000
#define EXYNOS5420_SOC_ID 0xE5420000
#define EXYNOS5_SOC_ID_MASK 0xFFFFF000
#define EXYNOS_SYSRAM 0x02020000
#define EXYNOS5420_SYSRAM_NS (EXYNOS_SYSRAM + 0x53000 + 0x1c)
#define EXYNOS_PMU_BASE 0x10040000
#define CORE_CONFIG(n) (0x2000 + (0x80 * (n)))
#define CORE_STATUS(n) (CORE_CONFIG(n) + 0x4)
#define CORE_PWR_EN 0x3
static int
exynos_get_soc_id(void)
{
bus_addr_t chipid;
int reg;
if (bus_space_map(fdtbus_bs_tag, EXYNOS_CHIPID,
0x1000, 0, &chipid) != 0)
panic("Couldn't map chipid\n");
reg = bus_space_read_4(fdtbus_bs_tag, chipid, 0x0);
bus_space_unmap(fdtbus_bs_tag, chipid, 0x1000);
return (reg & EXYNOS5_SOC_ID_MASK);
}
void
platform_mp_init_secondary(void)
{
gic_init_secondary();
}
void
platform_mp_setmaxid(void)
{
if (exynos_get_soc_id() == EXYNOS5420_SOC_ID)
mp_ncpus = 4;
else
mp_ncpus = 2;
mp_maxid = mp_ncpus - 1;
}
int
platform_mp_probe(void)
{
return (mp_ncpus > 1);
}
void
platform_mp_start_ap(void)
{
bus_addr_t sysram, pmu;
int err, i, j;
int status;
int reg;
err = bus_space_map(fdtbus_bs_tag, EXYNOS_PMU_BASE, 0x20000, 0, &pmu);
if (err != 0)
panic("Couldn't map pmu\n");
if (exynos_get_soc_id() == EXYNOS5420_SOC_ID)
reg = EXYNOS5420_SYSRAM_NS;
else
reg = EXYNOS_SYSRAM;
err = bus_space_map(fdtbus_bs_tag, reg, 0x100, 0, &sysram);
if (err != 0)
panic("Couldn't map sysram\n");
/* Give power to CPUs */
for (i = 1; i < mp_ncpus; i++) {
bus_space_write_4(fdtbus_bs_tag, pmu, CORE_CONFIG(i),
CORE_PWR_EN);
for (j = 10; j >= 0; j--) {
status = bus_space_read_4(fdtbus_bs_tag, pmu,
CORE_STATUS(i));
if ((status & CORE_PWR_EN) == CORE_PWR_EN)
break;
DELAY(10);
if (j == 0)
printf("Can't power on CPU%d\n", i);
}
}
bus_space_write_4(fdtbus_bs_tag, sysram, 0x0,
pmap_kextract((vm_offset_t)mpentry));
cpu_idcache_wbinv_all();
cpu_l2cache_wbinv_all();
armv7_sev();
bus_space_unmap(fdtbus_bs_tag, sysram, 0x100);
bus_space_unmap(fdtbus_bs_tag, pmu, 0x20000);
}
void
platform_ipi_send(cpuset_t cpus, u_int ipi)
{
pic_ipi_send(cpus, ipi);
}
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