1 /*- 2 * Copyright (c) 2000 Benno Rice <benno@jeamland.net> 3 * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <stand.h> 32 #include "openfirm.h" 33 #include "libofw.h" 34 #include "bootstrap.h" 35 36 #include <machine/psl.h> 37 38 struct arch_switch archsw; /* MI/MD interface boundary */ 39 40 extern char end[]; 41 extern char bootprog_info[]; 42 43 uint32_t acells, scells; 44 45 static char bootargs[128]; 46 47 #define HEAP_SIZE 0x800000 48 static char heap[HEAP_SIZE]; // In BSS, so uses no space 49 50 #define OF_puts(fd, text) OF_write(fd, text, strlen(text)) 51 52 static __inline register_t 53 mfmsr(void) 54 { 55 register_t value; 56 57 __asm __volatile ("mfmsr %0" : "=r"(value)); 58 59 return (value); 60 } 61 62 void 63 init_heap(void) 64 { 65 bzero(heap, HEAP_SIZE); 66 67 setheap(heap, (void *)((int)heap + HEAP_SIZE)); 68 } 69 70 uint64_t 71 memsize(void) 72 { 73 phandle_t memoryp; 74 cell_t reg[24]; 75 int i, sz; 76 uint64_t memsz; 77 78 memsz = 0; 79 memoryp = OF_instance_to_package(memory); 80 81 sz = OF_getprop(memoryp, "reg", ®, sizeof(reg)); 82 sz /= sizeof(reg[0]); 83 84 for (i = 0; i < sz; i += (acells + scells)) { 85 if (scells > 1) 86 memsz += (uint64_t)reg[i + acells] << 32; 87 memsz += reg[i + acells + scells - 1]; 88 } 89 90 return (memsz); 91 } 92 93 int 94 main(int (*openfirm)(void *)) 95 { 96 phandle_t root; 97 int i; 98 char bootpath[64]; 99 char *ch; 100 int bargc; 101 char **bargv; 102 103 /* 104 * Initialise the Open Firmware routines by giving them the entry point. 105 */ 106 OF_init(openfirm); 107 108 root = OF_finddevice("/"); 109 110 scells = acells = 1; 111 OF_getprop(root, "#address-cells", &acells, sizeof(acells)); 112 OF_getprop(root, "#size-cells", &scells, sizeof(scells)); 113 114 /* 115 * Initialise the heap as early as possible. Once this is done, 116 * alloc() is usable. The stack is buried inside us, so this is 117 * safe. 118 */ 119 init_heap(); 120 121 /* 122 * Set up console. 123 */ 124 cons_probe(); 125 126 /* 127 * March through the device switch probing for things. 128 */ 129 for (i = 0; devsw[i] != NULL; i++) 130 if (devsw[i]->dv_init != NULL) 131 (devsw[i]->dv_init)(); 132 133 printf("\n%s", bootprog_info); 134 printf("Memory: %lldKB\n", memsize() / 1024); 135 136 OF_getprop(chosen, "bootpath", bootpath, 64); 137 ch = strchr(bootpath, ':'); 138 *ch = '\0'; 139 printf("Booted from: %s\n", bootpath); 140 141 printf("\n"); 142 143 /* 144 * Only parse the first bootarg if present. It should 145 * be simple to handle extra arguments 146 */ 147 OF_getprop(chosen, "bootargs", bootargs, sizeof(bootargs)); 148 bargc = 0; 149 parse(&bargc, &bargv, bootargs); 150 if (bargc == 1) 151 env_setenv("currdev", EV_VOLATILE, bargv[0], ofw_setcurrdev, 152 env_nounset); 153 else 154 env_setenv("currdev", EV_VOLATILE, bootpath, 155 ofw_setcurrdev, env_nounset); 156 env_setenv("loaddev", EV_VOLATILE, bootpath, env_noset, 157 env_nounset); 158 setenv("LINES", "24", 1); /* optional */ 159 160 /* 161 * On non-Apple hardware, where it works reliably, pass flattened 162 * device trees to the kernel by default instead of OF CI pointers. 163 * Apple hardware is the only virtual-mode OF implementation in 164 * existence, so far as I am aware, so use that as a flag. 165 */ 166 if (!(mfmsr() & PSL_DR)) 167 setenv("usefdt", "1", 1); 168 169 archsw.arch_getdev = ofw_getdev; 170 archsw.arch_copyin = ofw_copyin; 171 archsw.arch_copyout = ofw_copyout; 172 archsw.arch_readin = ofw_readin; 173 archsw.arch_autoload = ofw_autoload; 174 175 interact(); /* doesn't return */ 176 177 OF_exit(); 178 179 return 0; 180 } 181 182 COMMAND_SET(halt, "halt", "halt the system", command_halt); 183 184 static int 185 command_halt(int argc, char *argv[]) 186 { 187 188 OF_exit(); 189 return (CMD_OK); 190 } 191 192 COMMAND_SET(memmap, "memmap", "print memory map", command_memmap); 193 194 int 195 command_memmap(int argc, char **argv) 196 { 197 198 ofw_memmap(acells); 199 return (CMD_OK); 200 } 201