1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2012 Oleksandr Tymoshenko. 5 * Copyright (c) 1994-1998 Mark Brinicombe. 6 * Copyright (c) 1994 Brini. 7 * All rights reserved. 8 * 9 * This code is derived from software written for Brini by Mark Brinicombe 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Brini. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 39 */ 40 41 #include "opt_ddb.h" 42 #include "opt_platform.h" 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/bus.h> 50 #include <sys/devmap.h> 51 52 #include <vm/vm.h> 53 #include <vm/pmap.h> 54 55 #include <machine/bus.h> 56 #include <machine/machdep.h> 57 #include <machine/platform.h> 58 #include <machine/platformvar.h> 59 60 #include <dev/ofw/openfirm.h> 61 62 #include <arm/broadcom/bcm2835/bcm2835_wdog.h> 63 #include <arm/broadcom/bcm2835/bcm2836_mp.h> 64 65 #include "platform_if.h" 66 67 #ifdef SOC_BCM2835 68 static platform_devmap_init_t bcm2835_devmap_init; 69 #endif 70 #ifdef SOC_BCM2836 71 static platform_devmap_init_t bcm2836_devmap_init; 72 #endif 73 static platform_late_init_t bcm2835_late_init; 74 static platform_cpu_reset_t bcm2835_cpu_reset; 75 76 static void 77 bcm2835_late_init(platform_t plat) 78 { 79 phandle_t system; 80 pcell_t cells[2]; 81 int len; 82 83 system = OF_finddevice("/system"); 84 if (system != -1) { 85 len = OF_getencprop(system, "linux,serial", cells, 86 sizeof(cells)); 87 if (len > 0) 88 board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]); 89 90 len = OF_getencprop(system, "linux,revision", cells, 91 sizeof(cells)); 92 if (len > 0) 93 board_set_revision(cells[0]); 94 } 95 } 96 97 #ifdef SOC_BCM2835 98 /* 99 * Set up static device mappings. 100 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 101 * Map the entire range using 1MB section mappings. 102 */ 103 static int 104 bcm2835_devmap_init(platform_t plat) 105 { 106 107 devmap_add_entry(0x20000000, 0x01000000); 108 return (0); 109 } 110 #endif 111 112 #ifdef SOC_BCM2836 113 static int 114 bcm2836_devmap_init(platform_t plat) 115 { 116 117 devmap_add_entry(0x3f000000, 0x01000000); 118 return (0); 119 } 120 #endif 121 122 static void 123 bcm2835_cpu_reset(platform_t plat) 124 { 125 bcmwd_watchdog_reset(); 126 } 127 128 #ifdef SOC_BCM2835 129 static platform_method_t bcm2835_methods[] = { 130 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), 131 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 132 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 133 134 PLATFORMMETHOD_END, 135 }; 136 FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100); 137 FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100); 138 #endif 139 140 #if defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) 141 static platform_method_t bcm2836_methods[] = { 142 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), 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 }; 153 FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100); 154 FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100); 155 FDT_PLATFORM_DEF2(bcm2836, bcm2837, "bcm2837", 0, "brcm,bcm2837", 100); 156 #endif /* defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) */ 157