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/*-
* Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
* 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.
*/
#define _ARM32_BUS_DMA_PRIVATE
#include "opt_platform.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/reboot.h>
#include <sys/devmap.h>
#include <vm/vm.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <machine/intr.h>
#include <machine/machdep.h>
#include <machine/platformvar.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <arm/nvidia/tegra124/tegra124_mp.h>
#include "platform_if.h"
#define PMC_PHYSBASE 0x7000e400
#define PMC_SIZE 0x400
#define PMC_CONTROL_REG 0x0
#define PMC_SCRATCH0 0x50
#define PMC_SCRATCH0_MODE_RECOVERY (1 << 31)
#define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30)
#define PMC_SCRATCH0_MODE_RCM (1 << 1)
#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
PMC_SCRATCH0_MODE_BOOTLOADER | \
PMC_SCRATCH0_MODE_RCM)
struct fdt_fixup_entry fdt_fixup_table[] = {
{ NULL, NULL }
};
struct arm32_dma_range *
bus_dma_get_range(void)
{
return (NULL);
}
int
bus_dma_get_range_nb(void)
{
return (0);
}
static vm_offset_t
tegra124_lastaddr(platform_t plat)
{
return (devmap_lastaddr());
}
static int
tegra124_attach(platform_t plat)
{
return (0);
}
static void
tegra124_late_init(platform_t plat)
{
}
/*
* Set up static device mappings.
*
*/
static int
tegra124_devmap_init(platform_t plat)
{
devmap_add_entry(0x70000000, 0x01000000);
return (0);
}
void
cpu_reset(void)
{
bus_space_handle_t pmc;
uint32_t reg;
printf("Resetting...\n");
bus_space_map(fdtbus_bs_tag, PMC_PHYSBASE, PMC_SIZE, 0, &pmc);
reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
reg &= PMC_SCRATCH0_MODE_MASK;
bus_space_write_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0,
reg | PMC_SCRATCH0_MODE_BOOTLOADER); /* boot to bootloader */
bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
spinlock_enter();
dsb();
bus_space_write_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG, reg | 0x10);
bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
while(1)
;
}
/*
* Early putc routine for EARLY_PRINTF support. To use, add to kernel config:
* option SOCDEV_PA=0x70000000
* option SOCDEV_VA=0x70000000
* option EARLY_PRINTF
*/
#ifdef EARLY_PRINTF
static void
tegra124_early_putc(int c)
{
volatile uint32_t * UART_STAT_REG = (uint32_t *)(0x70006314);
volatile uint32_t * UART_TX_REG = (uint32_t *)(0x70006300);
const uint32_t UART_TXRDY = (1 << 6);
while ((*UART_STAT_REG & UART_TXRDY) == 0)
continue;
*UART_TX_REG = c;
}
early_putc_t *early_putc = tegra124_early_putc;
#endif
static platform_method_t tegra124_methods[] = {
PLATFORMMETHOD(platform_attach, tegra124_attach),
PLATFORMMETHOD(platform_lastaddr, tegra124_lastaddr),
PLATFORMMETHOD(platform_devmap_init, tegra124_devmap_init),
PLATFORMMETHOD(platform_late_init, tegra124_late_init),
#ifdef SMP
PLATFORMMETHOD(platform_mp_start_ap, tegra124_mp_start_ap),
PLATFORMMETHOD(platform_mp_setmaxid, tegra124_mp_setmaxid),
#endif
PLATFORMMETHOD_END,
};
FDT_PLATFORM_DEF(tegra124, "Nvidia Jetson-TK1", 0, "nvidia,jetson-tk1", 0);
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