1 /*-
2 * Copyright (C) 2007 by Oleksandr Tymoshenko. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
17 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
21 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
22 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $Id: $
26 *
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: releng/9.0/sys/mips/idt/idt_machdep.c 216320 2010-12-09 07:47:40Z gonzo $");
31
32 #include "opt_ddb.h"
33
34 #include <sys/param.h>
35 #include <sys/conf.h>
36 #include <sys/kernel.h>
37 #include <sys/systm.h>
38 #include <sys/imgact.h>
39 #include <sys/bio.h>
40 #include <sys/buf.h>
41 #include <sys/bus.h>
42 #include <sys/cpu.h>
43 #include <sys/cons.h>
44 #include <sys/exec.h>
45 #include <sys/ucontext.h>
46 #include <sys/proc.h>
47 #include <sys/kdb.h>
48 #include <sys/ptrace.h>
49 #include <sys/reboot.h>
50 #include <sys/signalvar.h>
51 #include <sys/sysent.h>
52 #include <sys/sysproto.h>
53 #include <sys/user.h>
54
55 #include <vm/vm.h>
56 #include <vm/vm_object.h>
57 #include <vm/vm_page.h>
58 #include <vm/vm_pager.h>
59
60 #include <machine/cache.h>
61 #include <machine/clock.h>
62 #include <machine/cpu.h>
63 #include <machine/cpuinfo.h>
64 #include <machine/cpufunc.h>
65 #include <machine/cpuregs.h>
66 #include <machine/hwfunc.h>
67 #include <machine/intr_machdep.h>
68 #include <machine/locore.h>
69 #include <machine/md_var.h>
70 #include <machine/pte.h>
71 #include <machine/sigframe.h>
72 #include <machine/trap.h>
73 #include <machine/vmparam.h>
74
75 extern int *edata;
76 extern int *end;
77
78 void
79 platform_cpu_init()
80 {
81 /* Nothing special */
82 }
83
84 void
85 platform_halt(void)
86 {
87
88 }
89
90
91 void
92 platform_identify(void)
93 {
94
95 }
96
97 void
98 platform_reset(void)
99 {
100 volatile unsigned int * p = (void *)0xb8008000;
101 /*
102 * TODO: we should take care of TLB stuff here. Otherwise
103 * board does not boots properly next time
104 */
105
106 /* Write 0x8000_0001 to the Reset register */
107 *p = 0x80000001;
108
109 __asm __volatile("li $25, 0xbfc00000");
110 __asm __volatile("j $25");
111 }
112
113 void
114 platform_trap_enter(void)
115 {
116
117 }
118
119 void
120 platform_trap_exit(void)
121 {
122
123 }
124
125 void
126 platform_start(__register_t a0, __register_t a1,
127 __register_t a2 __unused, __register_t a3 __unused)
128 {
129 uint64_t platform_counter_freq;
130 vm_offset_t kernend;
131 int argc = a0;
132 char **argv = (char **)a1;
133 int i, mem;
134
135
136 /* clear the BSS and SBSS segments */
137 kernend = (vm_offset_t)&end;
138 memset(&edata, 0, kernend - (vm_offset_t)(&edata));
139
140 mips_postboot_fixup();
141
142 /* Initialize pcpu stuff */
143 mips_pcpu0_init();
144
145 /*
146 * Looking for mem=XXM argument
147 */
148 mem = 0; /* Just something to start with */
149 for (i=0; i < argc; i++) {
150 if (strncmp(argv[i], "mem=", 4) == 0) {
151 mem = strtol(argv[i] + 4, NULL, 0);
152 break;
153 }
154 }
155
156 bootverbose = 1;
157 if (mem > 0)
158 realmem = btoc(mem << 20);
159 else
160 realmem = btoc(32 << 20);
161
162 for (i = 0; i < 10; i++) {
163 phys_avail[i] = 0;
164 }
165
166 /* phys_avail regions are in bytes */
167 phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
168 phys_avail[1] = ctob(realmem);
169
170 dump_avail[0] = phys_avail[0];
171 dump_avail[1] = phys_avail[1];
172
173 physmem = realmem;
174
175 /*
176 * ns8250 uart code uses DELAY so ticker should be inititalized
177 * before cninit. And tick_init_params refers to hz, so * init_param1
178 * should be called first.
179 */
180 init_param1();
181 /* TODO: parse argc,argv */
182 platform_counter_freq = 330000000UL;
183 mips_timer_init_params(platform_counter_freq, 1);
184 cninit();
185 /* Panic here, after cninit */
186 if (mem == 0)
187 panic("No mem=XX parameter in arguments");
188
189 printf("cmd line: ");
190 for (i=0; i < argc; i++)
191 printf("%s ", argv[i]);
192 printf("\n");
193
194 init_param2(physmem);
195 mips_cpu_init();
196 pmap_bootstrap();
197 mips_proc0_init();
198 mutex_init();
199 kdb_init();
200 #ifdef KDB
201 if (boothowto & RB_KDB)
202 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
203 #endif
204 }
Cache object: 4b824a8e7ddc83bec857e023ad09d1b0
|