1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Copyright (C) 2003, 2004 PMC-Sierra Inc.
* Author: Manish Lachwani (lachwani@pmc-sierra.com)
* Copyright (C) 2004 Ralf Baechle
*/
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/smp.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/system.h>
#include <asm/bootinfo.h>
#include <asm/pmon.h>
#ifdef CONFIG_SMP
extern void prom_grab_secondary(void);
#else
#define prom_grab_secondary() do { } while (0)
#endif
#include "setup.h"
struct callvectors *debug_vectors;
extern unsigned long yosemite_base;
extern unsigned long cpu_clock_freq;
const char *get_system_type(void)
{
return "PMC-Sierra Yosemite";
}
static void prom_cpu0_exit(void *arg)
{
void *nvram = (void *) YOSEMITE_RTC_BASE;
/* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */
writeb(0x84, nvram + 0xff7);
/* wait for the watchdog to go off */
mdelay(100 + (1000 / 16));
/* if the watchdog fails for some reason, let people know */
printk(KERN_NOTICE "Watchdog reset failed\n");
}
/*
* Reset the NVRAM over the local bus
*/
static void prom_exit(void)
{
#ifdef CONFIG_SMP
if (smp_processor_id())
/* CPU 1 */
smp_call_function(prom_cpu0_exit, NULL, 1, 1);
#endif
prom_cpu0_exit(NULL);
}
/*
* Halt the system
*/
static void prom_halt(void)
{
printk(KERN_NOTICE "\n** You can safely turn off the power\n");
while (1)
__asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
}
/*
* Init routine which accepts the variables from PMON
*/
void __init prom_init(void)
{
int argc = fw_arg0;
char **arg = (char **) fw_arg1;
char **env = (char **) fw_arg2;
struct callvectors *cv = (struct callvectors *) fw_arg3;
int i = 0;
/* Callbacks for halt, restart */
_machine_restart = (void (*)(char *)) prom_exit;
_machine_halt = prom_halt;
pm_power_off = prom_halt;
debug_vectors = cv;
arcs_cmdline[0] = '\0';
/* Get the boot parameters */
for (i = 1; i < argc; i++) {
if (strlen(arcs_cmdline) + strlen(arg[i] + 1) >=
sizeof(arcs_cmdline))
break;
strcat(arcs_cmdline, arg[i]);
strcat(arcs_cmdline, " ");
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
if ((strstr(arcs_cmdline, "console=ttyS")) == NULL)
strcat(arcs_cmdline, "console=ttyS0,115200");
#endif
while (*env) {
if (strncmp("ocd_base", *env, strlen("ocd_base")) == 0)
yosemite_base =
simple_strtol(*env + strlen("ocd_base="), NULL,
16);
if (strncmp("cpuclock", *env, strlen("cpuclock")) == 0)
cpu_clock_freq =
simple_strtol(*env + strlen("cpuclock="), NULL,
10);
env++;
}
mips_machgroup = MACH_GROUP_TITAN;
mips_machtype = MACH_TITAN_YOSEMITE;
prom_grab_secondary();
}
void __init prom_free_prom_memory(void)
{
}
void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
{
}
|
