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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
*/
/*
* Setup code for the SWARM board
*/
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/screen_info.h>
#include <linux/initrd.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/mipsregs.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/traps.h>
#include <asm/sibyte/sb1250.h>
#ifdef CONFIG_SIBYTE_BCM1x80
#include <asm/sibyte/bcm1480_regs.h>
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
#include <asm/sibyte/sb1250_regs.h>
#else
#error invalid SiByte board configuration
#endif
#include <asm/sibyte/sb1250_genbus.h>
#include <asm/sibyte/board.h>
#ifdef CONFIG_SIBYTE_BCM1x80
extern void bcm1480_setup(void);
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
extern void sb1250_setup(void);
#else
#error invalid SiByte board configuration
#endif
extern int xicor_probe(void);
extern int xicor_set_time(time64_t);
extern time64_t xicor_get_time(void);
extern int m41t81_probe(void);
extern int m41t81_set_time(time64_t);
extern time64_t m41t81_get_time(void);
const char *get_system_type(void)
{
return "SiByte " SIBYTE_BOARD_NAME;
}
int swarm_be_handler(struct pt_regs *regs, int is_fixup)
{
if (!is_fixup && (regs->cp0_cause & 4)) {
/* Data bus error - print PA */
printk("DBE physical address: %010Lx\n",
__read_64bit_c0_register($26, 1));
}
return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL;
}
enum swarm_rtc_type {
RTC_NONE,
RTC_XICOR,
RTC_M41T81,
};
enum swarm_rtc_type swarm_rtc_type;
void read_persistent_clock64(struct timespec64 *ts)
{
time64_t sec;
switch (swarm_rtc_type) {
case RTC_XICOR:
sec = xicor_get_time();
break;
case RTC_M41T81:
sec = m41t81_get_time();
break;
case RTC_NONE:
default:
sec = mktime64(2000, 1, 1, 0, 0, 0);
break;
}
ts->tv_sec = sec;
ts->tv_nsec = 0;
}
int update_persistent_clock64(struct timespec64 now)
{
time64_t sec = now.tv_sec;
switch (swarm_rtc_type) {
case RTC_XICOR:
return xicor_set_time(sec);
case RTC_M41T81:
return m41t81_set_time(sec);
case RTC_NONE:
default:
return -1;
}
}
#ifdef CONFIG_VGA_CONSOLE
static struct screen_info vgacon_screen_info = {
.orig_video_page = 52,
.orig_video_mode = 3,
.orig_video_cols = 80,
.flags = 12,
.orig_video_ega_bx = 3,
.orig_video_lines = 25,
.orig_video_isVGA = 0x22,
.orig_video_points = 16,
};
#endif
void __init plat_mem_setup(void)
{
#ifdef CONFIG_SIBYTE_BCM1x80
bcm1480_setup();
#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
sb1250_setup();
#else
#error invalid SiByte board configuration
#endif
mips_set_be_handler(swarm_be_handler);
if (xicor_probe())
swarm_rtc_type = RTC_XICOR;
if (m41t81_probe())
swarm_rtc_type = RTC_M41T81;
#ifdef CONFIG_VGA_CONSOLE
vgacon_register_screen(&vgacon_screen_info);
/* XXXKW for CFE, get lines/cols from environment */
#endif
}
#ifdef LEDS_PHYS
void setleds(char *str)
{
void *reg;
int i;
for (i = 0; i < 4; i++) {
reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3);
if (!str[i])
writeb(' ', reg);
else
writeb(str[i], reg);
}
}
#endif /* LEDS_PHYS */
|
