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 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 53 #include <machine/bus.h> 54 #include <machine/devmap.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 (arm_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 /* 92 * Set up static device mappings. 93 * All on-chip peripherals exist in a 16MB range starting at 0x20000000. 94 * Map the entire range using 1MB section mappings. 95 */ 96 static int 97 bcm2835_devmap_init(platform_t plat) 98 { 99 100 arm_devmap_add_entry(0x20000000, 0x01000000); 101 return (0); 102 } 103 104 struct arm32_dma_range * 105 bus_dma_get_range(void) 106 { 107 108 return (NULL); 109 } 110 111 int 112 bus_dma_get_range_nb(void) 113 { 114 115 return (0); 116 } 117 118 void 119 cpu_reset() 120 { 121 bcmwd_watchdog_reset(); 122 while (1); 123 } 124 static platform_method_t bcm2835_methods[] = { 125 PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), 126 PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr), 127 PLATFORMMETHOD(platform_late_init, bcm2835_late_init), 128 129 PLATFORMMETHOD_END, 130 }; 131 132 FDT_PLATFORM_DEF(bcm2835, "bcm2835", 0, "raspberrypi,model-b"); 133 134