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 #define _ARM32_BUS_DMA_PRIVATE 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/bus.h> 49 #include <sys/devmap.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 54 #include <machine/bus.h> 55 #include <machine/machdep.h> 56 #include <machine/platform.h> 57 #include <machine/platformvar.h> 58 59 #include <dev/fdt/fdt_common.h> 60 61 #include <arm/broadcom/bcm2835/bcm2835_wdog.h> 62 63 #include "platform_if.h" 64 65 static vm_offset_t 66 bcm2835_lastaddr(platform_t plat) 67 { 68 69 return (devmap_lastaddr()); 70 } 71 72 static void 73 bcm2835_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_getprop(system, "linux,serial", &cells, sizeof(cells)); 82 if (len > 0) 83 board_set_serial(fdt64_to_cpu(*((uint64_t *)cells))); 84 85 len = OF_getprop(system, "linux,revision", &cells, sizeof(cells)); 86 if (len > 0) 87 board_set_revision(fdt32_to_cpu(*((uint32_t *)cells))); 88 } 89 } 90 91 #ifdef SOC_BCM2835 92 /* 93 * Set up static device mappings. 94 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 95 * Map the entire range using 1MB section mappings. 96 */ 97 static int 98 bcm2835_devmap_init(platform_t plat) 99 { 100 101 devmap_add_entry(0x20000000, 0x01000000); 102 return (0); 103 } 104 #endif 105 106 #ifdef SOC_BCM2836 107 static int 108 bcm2836_devmap_init(platform_t plat) 109 { 110 111 devmap_add_entry(0x3f000000, 0x01000000); 112 return (0); 113 } 114 #endif 115 116 struct arm32_dma_range * 117 bus_dma_get_range(void) 118 { 119 120 return (NULL); 121 } 122 123 int 124 bus_dma_get_range_nb(void) 125 { 126 127 return (0); 128 } 129 130 void 131 cpu_reset() 132 { 133 bcmwd_watchdog_reset(); 134 while (1); 135 } 136 137 #ifdef SOC_BCM2835 138 static platform_method_t bcm2835_methods[] = { 139 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), 140 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr), 141 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 142 143 PLATFORMMETHOD_END, 144 }; 145 FDT_PLATFORM_DEF(bcm2835, "bcm2835", 0, "raspberrypi,model-b", 0); 146 #endif 147 148 #ifdef SOC_BCM2836 149 static platform_method_t bcm2836_methods[] = { 150 PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), 151 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr), 152 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 153 154 PLATFORMMETHOD_END, 155 }; 156 FDT_PLATFORM_DEF(bcm2836, "bcm2836", 0, "brcm,bcm2709", 0); 157 #endif 158