2 * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
3 * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
34 #include "bootstrap.h"
36 #include <machine/psl.h>
38 struct arch_switch archsw; /* MI/MD interface boundary */
41 extern char bootprog_info[];
43 uint32_t acells, scells;
45 static char bootargs[128];
47 #define HEAP_SIZE 0x800000
48 static char heap[HEAP_SIZE]; // In BSS, so uses no space
50 #define OF_puts(fd, text) OF_write(fd, text, strlen(text))
52 static __inline register_t
57 __asm __volatile ("mfmsr %0" : "=r"(value));
65 bzero(heap, HEAP_SIZE);
67 setheap(heap, (void *)((int)heap + HEAP_SIZE));
79 memoryp = OF_instance_to_package(memory);
81 sz = OF_getprop(memoryp, "reg", ®, sizeof(reg));
84 for (i = 0; i < sz; i += (acells + scells)) {
86 memsz += (uint64_t)reg[i + acells] << 32;
87 memsz += reg[i + acells + scells - 1];
94 main(int (*openfirm)(void *))
104 * Initialise the Open Firmware routines by giving them the entry point.
108 root = OF_finddevice("/");
111 OF_getprop(root, "#address-cells", &acells, sizeof(acells));
112 OF_getprop(root, "#size-cells", &scells, sizeof(scells));
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
127 * March through the device switch probing for things.
129 for (i = 0; devsw[i] != NULL; i++)
130 if (devsw[i]->dv_init != NULL)
131 (devsw[i]->dv_init)();
133 printf("\n%s", bootprog_info);
134 printf("Memory: %lldKB\n", memsize() / 1024);
136 OF_getprop(chosen, "bootpath", bootpath, 64);
137 ch = strchr(bootpath, ':');
139 printf("Booted from: %s\n", bootpath);
144 * Only parse the first bootarg if present. It should
145 * be simple to handle extra arguments
147 OF_getprop(chosen, "bootargs", bootargs, sizeof(bootargs));
149 parse(&bargc, &bargv, bootargs);
151 env_setenv("currdev", EV_VOLATILE, bargv[0], ofw_setcurrdev,
154 env_setenv("currdev", EV_VOLATILE, bootpath,
155 ofw_setcurrdev, env_nounset);
156 env_setenv("loaddev", EV_VOLATILE, bootpath, env_noset,
158 setenv("LINES", "24", 1); /* optional */
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.
166 if (!(mfmsr() & PSL_DR))
167 setenv("usefdt", "1", 1);
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;
175 interact(); /* doesn't return */
182 COMMAND_SET(halt, "halt", "halt the system", command_halt);
185 command_halt(int argc, char *argv[])
192 COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
195 command_memmap(int argc, char **argv)