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
|
/*
* (C) Copyright 2003
* Josef Baumgartner <josef.baumgartner@telex.de>
*
* MCF5282 additionals
* (C) Copyright 2005
* BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#ifdef CONFIG_M5272
#include <asm/immap_5272.h>
#include <asm/m5272.h>
#endif
#ifdef CONFIG_M5282
#include <asm/m5282.h>
#include <asm/immap_5282.h>
#endif
#ifdef CONFIG_M5249
#include <asm/m5249.h>
#endif
#ifdef CONFIG_M5272
int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR);
wdp->wdog_wrrr = 0;
udelay (1000);
/* enable watchdog, set timeout to 0 and wait */
wdp->wdog_wrrr = 1;
while (1);
/* we don't return! */
return 0;
};
int checkcpu(void) {
ulong *dirp = (ulong *)(CFG_MBAR + MCFSIM_DIR);
uchar msk;
char *suf;
puts ("CPU: ");
msk = (*dirp > 28) & 0xf;
switch (msk) {
case 0x2: suf = "1K75N"; break;
case 0x4: suf = "3K75N"; break;
default:
suf = NULL;
printf ("MOTOROLA MCF5272 (Mask:%01x)\n", msk);
break;
}
if (suf)
printf ("MOTOROLA MCF5272 %s\n", suf);
return 0;
};
#if defined(CONFIG_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void watchdog_reset (void)
{
volatile immap_t * regp = (volatile immap_t *)CFG_MBAR;
regp->wdog_reg.wdog_wcr = 0;
}
int watchdog_disable (void)
{
volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
regp->wdog_reg.wdog_wrrr = 0; /* disable watchdog timer */
puts ("WATCHDOG:disabled\n");
return (0);
}
int watchdog_init (void)
{
volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
/* set timeout and enable watchdog */
regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1;
regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
puts ("WATCHDOG:enabled\n");
return (0);
}
#endif /* #ifdef CONFIG_WATCHDOG */
#endif /* #ifdef CONFIG_M5272 */
#ifdef CONFIG_M5282
int checkcpu (void)
{
unsigned char resetsource;
printf ("CPU: MOTOROLA Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
MCFCCM_CIR>>8,MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
puts ("Reset: ");
resetsource = MCFRESET_RSR;
if (resetsource & MCFRESET_RSR_LOL) puts("Lose-of-lock ");
if (resetsource & MCFRESET_RSR_LOC) puts("Lose-of-clock ");
if (resetsource & MCFRESET_RSR_EXT) puts("external ");
if (resetsource & MCFRESET_RSR_POR) puts("Power-on ");
if (resetsource & MCFRESET_RSR_WDR) puts("Watchdog ");
if (resetsource & MCFRESET_RSR_SOFT) puts("Software ");
if (resetsource & MCFRESET_RSR_LVD) puts("Low-voltage ");
puts("\n");
return 0;
}
int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
return 0;
};
#endif
#ifdef CONFIG_M5249 /* test-only: todo... */
int checkcpu (void)
{
char buf[32];
printf ("CPU: MOTOROLA Coldfire MCF5249 at %s MHz\n", strmhz(buf, CFG_CLK));
return 0;
}
int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
/* enable watchdog, set timeout to 0 and wait */
mbar_writeByte(MCFSIM_SYPCR, 0xc0);
while (1);
/* we don't return! */
return 0;
};
#endif
|
