156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
/*-
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* Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
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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 "opt_platform.h"
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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/bus.h>
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#include <sys/devmap.h>
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#include <sys/lock.h>
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#include <sys/reboot.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/intr.h>
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#include <machine/machdep.h>
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#include <machine/platformvar.h>
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#include <dev/ofw/openfirm.h>
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#include <arm/nvidia/tegra124/tegra124_mp.h>
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#include "platform_if.h"
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#define PMC_PHYSBASE 0x7000e400
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#define PMC_SIZE 0x400
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#define PMC_CONTROL_REG 0x0
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#define PMC_SCRATCH0 0x50
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#define PMC_SCRATCH0_MODE_RECOVERY (1 << 31)
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#define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30)
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#define PMC_SCRATCH0_MODE_RCM (1 << 1)
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#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
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PMC_SCRATCH0_MODE_BOOTLOADER | \
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PMC_SCRATCH0_MODE_RCM)
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static platform_attach_t tegra124_attach;
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static platform_devmap_init_t tegra124_devmap_init;
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static platform_late_init_t tegra124_late_init;
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static platform_cpu_reset_t tegra124_cpu_reset;
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static int
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tegra124_attach(platform_t plat)
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{
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return (0);
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}
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static void
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tegra124_late_init(platform_t plat)
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{
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}
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/*
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* Set up static device mappings.
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*
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*/
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static int
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tegra124_devmap_init(platform_t plat)
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{
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devmap_add_entry(0x70000000, 0x01000000);
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return (0);
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}
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static void
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tegra124_cpu_reset(platform_t plat)
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{
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bus_space_handle_t pmc;
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uint32_t reg;
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printf("Resetting...\n");
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bus_space_map(fdtbus_bs_tag, PMC_PHYSBASE, PMC_SIZE, 0, &pmc);
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reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
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reg &= PMC_SCRATCH0_MODE_MASK;
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bus_space_write_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0,
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reg | PMC_SCRATCH0_MODE_BOOTLOADER); /* boot to bootloader */
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bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
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reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
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spinlock_enter();
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dsb();
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bus_space_write_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG, reg | 0x10);
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bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
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while(1)
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;
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}
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/*
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* Early putc routine for EARLY_PRINTF support. To use, add to kernel config:
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* option SOCDEV_PA=0x70000000
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* option SOCDEV_VA=0x70000000
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* option EARLY_PRINTF
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*/
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#if 0
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#ifdef EARLY_PRINTF
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static void
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tegra124_early_putc(int c)
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{
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volatile uint32_t * UART_STAT_REG = (uint32_t *)(0x70006314);
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volatile uint32_t * UART_TX_REG = (uint32_t *)(0x70006300);
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const uint32_t UART_TXRDY = (1 << 6);
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while ((*UART_STAT_REG & UART_TXRDY) == 0)
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continue;
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*UART_TX_REG = c;
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}
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early_putc_t *early_putc = tegra124_early_putc;
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#endif
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#endif
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static platform_method_t tegra124_methods[] = {
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PLATFORMMETHOD(platform_attach, tegra124_attach),
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PLATFORMMETHOD(platform_devmap_init, tegra124_devmap_init),
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PLATFORMMETHOD(platform_late_init, tegra124_late_init),
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PLATFORMMETHOD(platform_cpu_reset, tegra124_cpu_reset),
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#ifdef SMP
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PLATFORMMETHOD(platform_mp_start_ap, tegra124_mp_start_ap),
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PLATFORMMETHOD(platform_mp_setmaxid, tegra124_mp_setmaxid),
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#endif
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF(tegra124, "Nvidia Jetson-TK1", 0, "nvidia,jetson-tk1", 120);
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