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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
* (C) Copyright 2000-2010
* Wolfgang Denk, DENX Software Engineering, wd@denx.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
*/
/*
* CPU specific code for the MPC5xxx CPUs
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <net.h>
#include <mpc5xxx.h>
#include <netdev.h>
#include <asm/io.h>
#include <asm/processor.h>
#if defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#include <libfdt_env.h>
#include <fdt_support.h>
#endif
#if defined(CONFIG_OF_IDE_FIXUP)
#include <ide.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
int checkcpu (void)
{
ulong clock = gd->cpu_clk;
char buf[32];
uint svr, pvr;
puts ("CPU: ");
svr = get_svr();
pvr = get_pvr();
switch (pvr) {
case PVR_5200:
printf("MPC5200");
break;
case PVR_5200B:
printf("MPC5200B");
break;
default:
printf("Unknown MPC5xxx");
break;
}
printf (" v%d.%d, Core v%d.%d", SVR_MJREV (svr), SVR_MNREV (svr),
PVR_MAJ(pvr), PVR_MIN(pvr));
printf (" at %s MHz\n", strmhz (buf, clock));
return 0;
}
/* ------------------------------------------------------------------------- */
int
do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
ulong msr;
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
/* Charge the watchdog timer */
*(vu_long *)(MPC5XXX_GPT0_COUNTER) = 0x0001000f;
*(vu_long *)(MPC5XXX_GPT0_ENABLE) = 0x9004; /* wden|ce|timer_ms */
while(1);
return 1;
}
/* ------------------------------------------------------------------------- */
/*
* Get timebase clock frequency (like cpu_clk in Hz)
*
*/
unsigned long get_tbclk (void)
{
ulong tbclk;
tbclk = (gd->bus_clk + 3L) / 4L;
return (tbclk);
}
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
void ft_cpu_setup(void *blob, bd_t *bd)
{
int div = in_8((void*)CONFIG_SYS_MBAR + 0x204) & 0x0020 ? 8 : 4;
char * cpu_path = "/cpus/" OF_CPU;
#ifdef CONFIG_MPC5xxx_FEC
uchar enetaddr[6];
char * eth_path = "/" OF_SOC "/ethernet@3000";
#endif
do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
do_fixup_by_path_u32(blob, "/" OF_SOC, "bus-frequency", bd->bi_ipbfreq, 1);
do_fixup_by_path_u32(blob, "/" OF_SOC, "system-frequency",
bd->bi_busfreq*div, 1);
#ifdef CONFIG_MPC5xxx_FEC
eth_getenv_enetaddr("ethaddr", enetaddr);
do_fixup_by_path(blob, eth_path, "mac-address", enetaddr, 6, 0);
do_fixup_by_path(blob, eth_path, "local-mac-address", enetaddr, 6, 0);
#endif
#if defined(CONFIG_OF_IDE_FIXUP)
if (!ide_device_present(0)) {
/* NO CF card detected -> delete ata node in DTS */
int nodeoffset = 0;
char nodename[] = "/soc5200@f0000000/ata@3a00";
nodeoffset = fdt_path_offset(blob, nodename);
if (nodeoffset >= 0) {
fdt_del_node(blob, nodeoffset);
} else {
printf("%s: cannot find %s node err:%s\n",
__func__, nodename, fdt_strerror(nodeoffset));
}
}
#endif
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
}
#endif
#ifdef CONFIG_MPC5xxx_FEC
/* Default initializations for FEC controllers. To override,
* create a board-specific function called:
* int board_eth_init(bd_t *bis)
*/
int cpu_eth_init(bd_t *bis)
{
return mpc5xxx_fec_initialize(bis);
}
#endif
#if defined(CONFIG_WATCHDOG)
void watchdog_reset(void)
{
int re_enable = disable_interrupts();
reset_5xxx_watchdog();
if (re_enable) enable_interrupts();
}
void reset_5xxx_watchdog(void)
{
volatile struct mpc5xxx_gpt *gpt0 =
(struct mpc5xxx_gpt *) MPC5XXX_GPT;
/* Trigger TIMER_0 by writing A5 to OCPW */
clrsetbits_be32(&gpt0->emsr, 0xff000000, 0xa5000000);
}
#endif /* CONFIG_WATCHDOG */
|
