132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*-
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* Copyright (c) 2013-2014 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/smp.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/cpu.h>
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#include <machine/smp.h>
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#include <machine/fdt.h>
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#include <machine/intr.h>
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#define EXYNOS_CHIPID 0x10000000
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#define EXYNOS5250_SOC_ID 0x43520000
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#define EXYNOS5420_SOC_ID 0xE5420000
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#define EXYNOS5_SOC_ID_MASK 0xFFFFF000
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#define EXYNOS_SYSRAM 0x02020000
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#define EXYNOS5420_SYSRAM_NS (EXYNOS_SYSRAM + 0x53000 + 0x1c)
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#define EXYNOS_PMU_BASE 0x10040000
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#define CORE_CONFIG(n) (0x2000 + (0x80 * (n)))
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#define CORE_STATUS(n) (CORE_CONFIG(n) + 0x4)
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#define CORE_PWR_EN 0x3
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static int
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exynos_get_soc_id(void)
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{
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bus_addr_t chipid;
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int reg;
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if (bus_space_map(fdtbus_bs_tag, EXYNOS_CHIPID,
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0x1000, 0, &chipid) != 0)
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panic("Couldn't map chipid\n");
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reg = bus_space_read_4(fdtbus_bs_tag, chipid, 0x0);
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bus_space_unmap(fdtbus_bs_tag, chipid, 0x1000);
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return (reg & EXYNOS5_SOC_ID_MASK);
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}
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void
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platform_mp_setmaxid(void)
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{
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if (exynos_get_soc_id() == EXYNOS5420_SOC_ID)
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mp_ncpus = 4;
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else
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mp_ncpus = 2;
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mp_maxid = mp_ncpus - 1;
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}
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void
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platform_mp_start_ap(void)
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{
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bus_addr_t sysram, pmu;
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int err, i, j;
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int status;
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int reg;
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err = bus_space_map(fdtbus_bs_tag, EXYNOS_PMU_BASE, 0x20000, 0, &pmu);
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if (err != 0)
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panic("Couldn't map pmu\n");
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if (exynos_get_soc_id() == EXYNOS5420_SOC_ID)
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reg = EXYNOS5420_SYSRAM_NS;
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else
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reg = EXYNOS_SYSRAM;
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err = bus_space_map(fdtbus_bs_tag, reg, 0x100, 0, &sysram);
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if (err != 0)
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panic("Couldn't map sysram\n");
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/* Give power to CPUs */
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for (i = 1; i < mp_ncpus; i++) {
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bus_space_write_4(fdtbus_bs_tag, pmu, CORE_CONFIG(i),
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CORE_PWR_EN);
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for (j = 10; j >= 0; j--) {
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status = bus_space_read_4(fdtbus_bs_tag, pmu,
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CORE_STATUS(i));
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if ((status & CORE_PWR_EN) == CORE_PWR_EN)
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break;
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DELAY(10);
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if (j == 0)
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printf("Can't power on CPU%d\n", i);
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}
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}
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bus_space_write_4(fdtbus_bs_tag, sysram, 0x0,
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pmap_kextract((vm_offset_t)mpentry));
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dcache_wbinv_poc_all();
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dsb();
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sev();
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bus_space_unmap(fdtbus_bs_tag, sysram, 0x100);
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bus_space_unmap(fdtbus_bs_tag, pmu, 0x20000);
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}
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