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/param.h> 45 #include <sys/systm.h> 46 #include <sys/bus.h> 47 #include <sys/devmap.h> 48 49 #include <vm/vm.h> 50 #include <vm/pmap.h> 51 52 #include <machine/bus.h> 53 #include <machine/machdep.h> 54 #include <machine/platform.h> 55 #include <machine/platformvar.h> 56 57 #include <dev/ofw/openfirm.h> 58 59 #include <arm/broadcom/bcm2835/bcm2835_wdog.h> 60 #include <arm/broadcom/bcm2835/bcm2836_mp.h> 61 62 #include "platform_if.h" 63 64 #ifdef SOC_BCM2835 65 static platform_devmap_init_t bcm2835_devmap_init; 66 #endif 67 #ifdef SOC_BCM2836 68 static platform_devmap_init_t bcm2836_devmap_init; 69 #endif 70 static platform_late_init_t bcm2835_late_init; 71 static platform_cpu_reset_t bcm2835_cpu_reset; 72 73 static void 74 bcm2835_late_init(platform_t plat) 75 { 76 phandle_t system; 77 pcell_t cells[2]; 78 int len; 79 80 system = OF_finddevice("/system"); 81 if (system != -1) { 82 len = OF_getencprop(system, "linux,serial", cells, 83 sizeof(cells)); 84 if (len > 0) 85 board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]); 86 87 len = OF_getencprop(system, "linux,revision", cells, 88 sizeof(cells)); 89 if (len > 0) 90 board_set_revision(cells[0]); 91 } 92 } 93 94 #ifdef SOC_BCM2835 95 /* 96 * Set up static device mappings. 97 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 98 * Map the entire range using 1MB section mappings. 99 */ 100 static int 101 bcm2835_devmap_init(platform_t plat) 102 { 103 104 devmap_add_entry(0x20000000, 0x01000000); 105 return (0); 106 } 107 #endif 108 109 #ifdef SOC_BCM2836 110 static int 111 bcm2836_devmap_init(platform_t plat) 112 { 113 114 devmap_add_entry(0x3f000000, 0x01000000); 115 return (0); 116 } 117 #endif 118 119 static void 120 bcm2835_cpu_reset(platform_t plat) 121 { 122 bcmwd_watchdog_reset(); 123 } 124 125 #ifdef SOC_BCM2835 126 static platform_method_t bcm2835_methods[] = { 127 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), 128 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 129 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 130 131 PLATFORMMETHOD_END, 132 }; 133 FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100); 134 FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100); 135 #endif 136 137 #if defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) 138 static platform_method_t bcm2836_methods[] = { 139 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), 140 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 141 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 142 143 #ifdef SMP 144 PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap), 145 PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid), 146 #endif 147 148 PLATFORMMETHOD_END, 149 }; 150 FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100); 151 FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100); 152 FDT_PLATFORM_DEF2(bcm2836, bcm2837, "bcm2837", 0, "brcm,bcm2837", 100); 153 #endif /* defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) */ 154