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 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include "opt_ddb.h"
31
32 #include <sys/param.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/systm.h>
36 #include <sys/imgact.h>
37 #include <sys/bio.h>
38 #include <sys/buf.h>
39 #include <sys/bus.h>
40 #include <sys/cpu.h>
41 #include <sys/cons.h>
42 #include <sys/exec.h>
43 #include <sys/ucontext.h>
44 #include <sys/proc.h>
45 #include <sys/kdb.h>
46 #include <sys/ptrace.h>
47 #include <sys/reboot.h>
48 #include <sys/signalvar.h>
49 #include <sys/sysent.h>
50 #include <sys/sysproto.h>
51 #include <sys/user.h>
52
53 #include <vm/vm.h>
54 #include <vm/vm_object.h>
55 #include <vm/vm_page.h>
56
57 #include <machine/cache.h>
58 #include <machine/clock.h>
59 #include <machine/cpu.h>
60 #include <machine/cpuinfo.h>
61 #include <machine/cpufunc.h>
62 #include <machine/cpuregs.h>
63 #include <machine/hwfunc.h>
64 #include <machine/intr_machdep.h>
65 #include <machine/locore.h>
66 #include <machine/md_var.h>
67 #include <machine/pte.h>
68 #include <machine/sigframe.h>
69 #include <machine/trap.h>
70 #include <machine/vmparam.h>
71
72 extern int *edata;
73 extern int *end;
74
75 void
platform_cpu_init()76 platform_cpu_init()
77 {
78 /* Nothing special */
79 }
80
81 static void
mips_init(void)82 mips_init(void)
83 {
84 int i;
85
86 printf("entry: mips_init()\n");
87
88 bootverbose = 1;
89 realmem = btoc(16 << 20);
90
91 for (i = 0; i < 10; i++) {
92 phys_avail[i] = 0;
93 }
94
95 /* phys_avail regions are in bytes */
96 phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
97 phys_avail[1] = ctob(realmem);
98
99 dump_avail[0] = phys_avail[0];
100 dump_avail[1] = phys_avail[1];
101
102 physmem = realmem;
103
104 init_param1();
105 init_param2(physmem);
106 mips_cpu_init();
107 pmap_bootstrap();
108 mips_proc0_init();
109 mutex_init();
110 kdb_init();
111 #ifdef KDB
112 if (boothowto & RB_KDB)
113 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
114 #endif
115 }
116
117 void
platform_reset(void)118 platform_reset(void)
119 {
120
121 __asm __volatile("li $25, 0xbfc00000");
122 __asm __volatile("j $25");
123 }
124
125 void
platform_start(__register_t a0 __unused,__register_t a1 __unused,__register_t a2 __unused,__register_t a3 __unused)126 platform_start(__register_t a0 __unused, __register_t a1 __unused,
127 __register_t a2 __unused, __register_t a3 __unused)
128 {
129 vm_offset_t kernend;
130 uint64_t platform_counter_freq = 175 * 1000 * 1000;
131
132 /* clear the BSS and SBSS segments */
133 kernend = (vm_offset_t)&end;
134 memset(&edata, 0, kernend - (vm_offset_t)(&edata));
135
136 mips_postboot_fixup();
137
138 /* Initialize pcpu stuff */
139 mips_pcpu0_init();
140
141 cninit();
142 mips_init();
143 mips_timer_init_params(platform_counter_freq, 0);
144 }
145