2 * Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include "opt_platform.h"
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/reboot.h>
36 #include <sys/devmap.h>
40 #include <machine/bus.h>
41 #include <machine/fdt.h>
42 #include <machine/intr.h>
43 #include <machine/machdep.h>
44 #include <machine/platformvar.h>
46 #include <dev/fdt/fdt_common.h>
47 #include <dev/ofw/openfirm.h>
49 #include <arm/nvidia/tegra124/tegra124_mp.h>
51 #include "platform_if.h"
53 #define PMC_PHYSBASE 0x7000e400
54 #define PMC_SIZE 0x400
55 #define PMC_CONTROL_REG 0x0
56 #define PMC_SCRATCH0 0x50
57 #define PMC_SCRATCH0_MODE_RECOVERY (1 << 31)
58 #define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30)
59 #define PMC_SCRATCH0_MODE_RCM (1 << 1)
60 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
61 PMC_SCRATCH0_MODE_BOOTLOADER | \
62 PMC_SCRATCH0_MODE_RCM)
65 tegra124_lastaddr(platform_t plat)
68 return (devmap_lastaddr());
72 tegra124_attach(platform_t plat)
79 tegra124_late_init(platform_t plat)
85 * Set up static device mappings.
89 tegra124_devmap_init(platform_t plat)
92 devmap_add_entry(0x70000000, 0x01000000);
97 tegra124_cpu_reset(platform_t plat)
99 bus_space_handle_t pmc;
102 printf("Resetting...\n");
103 bus_space_map(fdtbus_bs_tag, PMC_PHYSBASE, PMC_SIZE, 0, &pmc);
105 reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
106 reg &= PMC_SCRATCH0_MODE_MASK;
107 bus_space_write_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0,
108 reg | PMC_SCRATCH0_MODE_BOOTLOADER); /* boot to bootloader */
109 bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0);
111 reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
114 bus_space_write_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG, reg | 0x10);
115 bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG);
122 * Early putc routine for EARLY_PRINTF support. To use, add to kernel config:
123 * option SOCDEV_PA=0x02000000
124 * option SOCDEV_VA=0x02000000
125 * option EARLY_PRINTF
129 tegra124_early_putc(int c)
131 volatile uint32_t * UART_STAT_REG = (uint32_t *)0x02020098;
132 volatile uint32_t * UART_TX_REG = (uint32_t *)0x02020040;
133 const uint32_t UART_TXRDY = (1 << 3);
135 while ((*UART_STAT_REG & UART_TXRDY) == 0)
139 early_putc_t *early_putc = tegra124_early_putc;
142 static platform_method_t tegra124_methods[] = {
143 PLATFORMMETHOD(platform_attach, tegra124_attach),
144 PLATFORMMETHOD(platform_lastaddr, tegra124_lastaddr),
145 PLATFORMMETHOD(platform_devmap_init, tegra124_devmap_init),
146 PLATFORMMETHOD(platform_late_init, tegra124_late_init),
147 PLATFORMMETHOD(platform_cpu_reset, tegra124_cpu_reset),
150 PLATFORMMETHOD(platform_mp_start_ap, tegra124_mp_start_ap),
151 PLATFORMMETHOD(platform_mp_setmaxid, tegra124_mp_setmaxid),
156 FDT_PLATFORM_DEF(tegra124, "Nvidia Jetson-TK1", 0, "nvidia,jetson-tk1", 120);