1/*-
2 * Copyright (C) 2010-2011 by Aleksandr Rybalko. All rights reserved.
3 * Copyright (C) 2007 by Oleksandr Tymoshenko. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
22 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
23 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: releng/10.3/sys/mips/rt305x/rt305x_machdep.c 247297 2013-02-26 01:00:11Z attilio $");
30
31#include "opt_ddb.h"
32
33#include <sys/param.h>
34#include <sys/conf.h>
35#include <sys/kernel.h>
36#include <sys/systm.h>
37#include <sys/imgact.h>
38#include <sys/bio.h>
39#include <sys/buf.h>
40#include <sys/bus.h>
41#include <sys/cpu.h>
42#include <sys/cons.h>
43#include <sys/exec.h>
44#include <sys/ucontext.h>
45#include <sys/proc.h>
46#include <sys/kdb.h>
47#include <sys/ptrace.h>
48#include <sys/reboot.h>
49#include <sys/signalvar.h>
50#include <sys/sysent.h>
51#include <sys/sysproto.h>
52#include <sys/user.h>
53
54#include <vm/vm.h>
55#include <vm/vm_object.h>
56#include <vm/vm_page.h>
57
58#include <machine/cache.h>
59#include <machine/clock.h>
60#include <machine/cpu.h>
61#include <machine/cpuinfo.h>
62#include <machine/cpufunc.h>
63#include <machine/cpuregs.h>
64#include <machine/hwfunc.h>
65#include <machine/intr_machdep.h>
66#include <machine/locore.h>
67#include <machine/md_var.h>
68#include <machine/pte.h>
69#include <machine/sigframe.h>
70#include <machine/trap.h>
71#include <machine/vmparam.h>
72
73#include <mips/rt305x/rt305xreg.h>
74
75extern int	*edata;
76extern int	*end;
77static char 	boot1_env[0x1000];
78
79
80void
81platform_cpu_init()
82{
83	/* Nothing special */
84}
85
86static void
87mips_init(void)
88{
89	int i;
90
91	printf("entry: mips_init()\n");
92
93	bootverbose = 1;
94	realmem = btoc(32 << 20);
95
96	for (i = 0; i < 10; i++) {
97		phys_avail[i] = 0;
98	}
99
100	/* phys_avail regions are in bytes */
101	dump_avail[0] = phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
102	dump_avail[1] = phys_avail[1] = ctob(realmem);
103
104	physmem = realmem;
105
106	init_param1();
107	init_param2(physmem);
108	mips_cpu_init();
109	pmap_bootstrap();
110	mips_proc0_init();
111	mutex_init();
112	kdb_init();
113#ifdef KDB
114	if (boothowto & RB_KDB)
115		kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
116#endif
117}
118
119void
120platform_reset(void)
121{
122
123	__asm __volatile("li	$25, 0xbf000000");
124	__asm __volatile("j	$25");
125}
126
127void
128platform_start(__register_t a0 __unused, __register_t a1 __unused,
129    __register_t a2 __unused, __register_t a3 __unused)
130{
131	vm_offset_t kernend;
132	uint64_t platform_counter_freq = PLATFORM_COUNTER_FREQ;
133	int i;
134	int argc = a0;
135	char **argv = (char **)MIPS_PHYS_TO_KSEG0(a1);
136	char **envp = (char **)MIPS_PHYS_TO_KSEG0(a2);
137
138	/* clear the BSS and SBSS segments */
139	kernend = (vm_offset_t)&end;
140	memset(&edata, 0, kernend - (vm_offset_t)(&edata));
141
142	mips_postboot_fixup();
143
144	/* Initialize pcpu stuff */
145	mips_pcpu0_init();
146
147	/* initialize console so that we have printf */
148	boothowto |= (RB_SERIAL | RB_MULTIPLE);	/* Use multiple consoles */
149	boothowto |= (RB_VERBOSE);
150	cninit();
151
152	init_static_kenv(boot1_env, sizeof(boot1_env));
153
154	printf("U-Boot args (from %d args):\n", argc - 1);
155
156	if (argc == 1)
157		printf("\tNone\n");
158
159	for (i = 1; i < argc; i++) {
160		char *n = "argv  ", *arg;
161
162		if (i > 99)
163			break;
164
165		if (argv[i])
166		{
167			arg = (char *)(intptr_t)MIPS_PHYS_TO_KSEG0(argv[i]);
168			printf("\targv[%d] = %s\n", i, arg);
169			sprintf(n, "argv%d", i);
170			setenv(n, arg);
171		}
172	}
173
174	printf("Environment:\n");
175
176	for (i = 0; envp[i] ; i++) {
177		char *n, *arg;
178
179		arg = (char *)(intptr_t)MIPS_PHYS_TO_KSEG0(envp[i]);
180		printf("\t%s\n", arg);
181		n = strsep(&arg, "=");
182		if (arg == NULL)
183			setenv(n, "1");
184		else
185			setenv(n, arg);
186	}
187
188
189	mips_init();
190	mips_timer_init_params(platform_counter_freq, 2);
191}
192