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("$FreeBSD$"); 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/ofw/openfirm.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 65 #ifdef SOC_BCM2835 66 static platform_devmap_init_t bcm2835_devmap_init; 67 #endif 68 #ifdef SOC_BCM2836 69 static platform_devmap_init_t bcm2836_devmap_init; 70 #endif 71 static platform_late_init_t bcm2835_late_init; 72 static platform_cpu_reset_t bcm2835_cpu_reset; 73 74 static void 75 bcm2835_late_init(platform_t plat) 76 { 77 phandle_t system; 78 pcell_t cells[2]; 79 int len; 80 81 system = OF_finddevice("/system"); 82 if (system != 0) { 83 len = OF_getencprop(system, "linux,serial", cells, 84 sizeof(cells)); 85 if (len > 0) 86 board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]); 87 88 len = OF_getencprop(system, "linux,revision", cells, 89 sizeof(cells)); 90 if (len > 0) 91 board_set_revision(cells[0]); 92 } 93 } 94 95 #ifdef SOC_BCM2835 96 /* 97 * Set up static device mappings. 98 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 99 * Map the entire range using 1MB section mappings. 100 */ 101 static int 102 bcm2835_devmap_init(platform_t plat) 103 { 104 105 devmap_add_entry(0x20000000, 0x01000000); 106 return (0); 107 } 108 #endif 109 110 #ifdef SOC_BCM2836 111 static int 112 bcm2836_devmap_init(platform_t plat) 113 { 114 115 devmap_add_entry(0x3f000000, 0x01000000); 116 return (0); 117 } 118 #endif 119 120 121 122 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_DEF(bcm2835, "bcm2835", 0, "raspberrypi,model-b", 100); 137 #endif 138 139 #ifdef SOC_BCM2836 140 static platform_method_t bcm2836_methods[] = { 141 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), 142 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 143 PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), 144 145 #ifdef SMP 146 PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap), 147 PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid), 148 #endif 149 150 PLATFORMMETHOD_END, 151 }; 152 FDT_PLATFORM_DEF(bcm2836, "bcm2836", 0, "brcm,bcm2709", 100); 153 #endif 154