1/*- 2 * Copyright (c) 2012 Oleksandr Tymoshenko. 3 * Copyright (c) 1994-1998 Mark Brinicombe. 4 * Copyright (c) 1994 Brini. 5 * All rights reserved. 6 * 7 * This code is derived from software written for Brini by Mark Brinicombe 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Brini. 20 * 4. The name of the company nor the name of the author may be used to 21 * endorse or promote products derived from this software without specific 22 * prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 37 */ 38 39#include "opt_ddb.h" 40#include "opt_platform.h" 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: stable/11/sys/arm/broadcom/bcm2835/bcm2835_machdep.c 331897 2018-04-02 23:39:04Z gonzo $"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/bus.h> 48#include <sys/devmap.h> 49 50#include <vm/vm.h> 51#include <vm/pmap.h> 52 53#include <machine/bus.h> 54#include <machine/machdep.h> 55#include <machine/platform.h> 56#include <machine/platformvar.h> 57 58#include <dev/fdt/fdt_common.h> 59 60#include <arm/broadcom/bcm2835/bcm2835_wdog.h> 61#include <arm/broadcom/bcm2835/bcm2836_mp.h> 62 63#include "platform_if.h" 64 65static vm_offset_t 66bcm2835_lastaddr(platform_t plat) 67{ 68 69 return (devmap_lastaddr()); 70} 71 72static void 73bcm2835_late_init(platform_t plat) 74{ 75 phandle_t system; 76 pcell_t cells[2]; 77 int len; 78 79 system = OF_finddevice("/system"); 80 if (system != 0) { 81 len = OF_getencprop(system, "linux,serial", cells, 82 sizeof(cells)); 83 if (len > 0) 84 board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]); 85 86 len = OF_getencprop(system, "linux,revision", cells, 87 sizeof(cells)); 88 if (len > 0) 89 board_set_revision(cells[0]); 90 } 91} 92 93#ifdef SOC_BCM2835 94/* 95 * Set up static device mappings. 96 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 97 * Map the entire range using 1MB section mappings. 98 */ 99static int 100bcm2835_devmap_init(platform_t plat) 101{ 102 103 devmap_add_entry(0x20000000, 0x01000000); 104 return (0); 105} 106#endif 107 108#ifdef SOC_BCM2836 109static int 110bcm2836_devmap_init(platform_t plat) 111{ 112 113 devmap_add_entry(0x3f000000, 0x01000000); 114 return (0); 115} 116#endif 117 118 119 120static void 121bcm2835_cpu_reset(platform_t plat) 122{ 123 bcmwd_watchdog_reset(); 124} 125 126#ifdef SOC_BCM2835 127static platform_method_t bcm2835_methods[] = { 128 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), 129 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr), 130 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 131 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 132 133 PLATFORMMETHOD_END, 134}; 135FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100); 136FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100); 137#endif 138 139#ifdef SOC_BCM2836 140static platform_method_t bcm2836_methods[] = { 141 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), 142 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr), 143 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 144 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 145 146#ifdef SMP 147 PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap), 148 PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid), 149#endif 150 151 PLATFORMMETHOD_END, 152}; 153FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100); 154FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100); 155#endif 156