summaryrefslogtreecommitdiffstats
path: root/arch/m68k/cpu/mcf547x_8x/cpu.c
blob: f9a4b64011ca1d6bd57cf81216cfcd146a75e334 (plain)
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
/*
 *
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 *
 * 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>
#include <netdev.h>

#include <asm/immap.h>

DECLARE_GLOBAL_DATA_PTR;

int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char * const argv[])
{
	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);

	gptmr->pre = 10;
	gptmr->cnt = 1;

	/* enable watchdog, set timeout to 0 and wait */
	gptmr->mode = GPT_TMS_SGPIO;
	gptmr->ctrl = GPT_CTRL_WDEN | GPT_CTRL_CE;

	/* we don't return! */
	return 1;
};

int checkcpu(void)
{
	volatile siu_t *siu = (siu_t *) MMAP_SIU;
	u16 id = 0;

	puts("CPU:   ");

	switch ((siu->jtagid & 0x000FF000) >> 12) {
	case 0x0C:
		id = 5485;
		break;
	case 0x0D:
		id = 5484;
		break;
	case 0x0E:
		id = 5483;
		break;
	case 0x0F:
		id = 5482;
		break;
	case 0x10:
		id = 5481;
		break;
	case 0x11:
		id = 5480;
		break;
	case 0x12:
		id = 5475;
		break;
	case 0x13:
		id = 5474;
		break;
	case 0x14:
		id = 5473;
		break;
	case 0x15:
		id = 5472;
		break;
	case 0x16:
		id = 5471;
		break;
	case 0x17:
		id = 5470;
		break;
	}

	if (id) {
		char buf1[32], buf2[32];

		printf("Freescale MCF%d\n", id);
		printf("       CPU CLK %s MHz BUS CLK %s MHz\n",
		       strmhz(buf1, gd->cpu_clk),
		       strmhz(buf2, gd->bus_clk));
	}

	return 0;
};

#if defined(CONFIG_HW_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void hw_watchdog_reset(void)
{
	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);

	gptmr->ocpw = 0xa5;
}

int watchdog_disable(void)
{
	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);

	/* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
	gptmr->mode = 0;
	gptmr->ctrl = 0;

	puts("WATCHDOG:disabled\n");

	return (0);
}

int watchdog_init(void)
{

	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);

	gptmr->pre = CONFIG_WATCHDOG_TIMEOUT;
	gptmr->cnt = CONFIG_SYS_TIMER_PRESCALER * 1000;

	gptmr->mode = GPT_TMS_SGPIO;
	gptmr->ctrl = GPT_CTRL_CE | GPT_CTRL_WDEN;
	puts("WATCHDOG:enabled\n");

	return (0);
}
#endif				/* CONFIG_HW_WATCHDOG */

#if defined(CONFIG_FSLDMAFEC) || defined(CONFIG_MCFFEC)
/* Default initializations for MCFFEC controllers.  To override,
 * create a board-specific function called:
 * 	int board_eth_init(bd_t *bis)
 */

int cpu_eth_init(bd_t *bis)
{
#if defined(CONFIG_FSLDMAFEC)
	mcdmafec_initialize(bis);
#endif
#if defined(CONFIG_MCFFEC)
	mcffec_initialize(bis);
#endif
	return 0;
}
#endif
OpenPOWER on IntegriCloud