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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* (C) Copyright 2003 Motorola Inc.
* Modified by Xianghua Xiao, X.Xiao@motorola.com
*
* (C) Copyright 2000
* 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
*/
#include <common.h>
#include <watchdog.h>
#include <asm/processor.h>
#include <ioports.h>
#include <asm/io.h>
#ifdef CONFIG_MPC8560
static void config_8560_ioports (volatile immap_t * immr)
{
int portnum;
for (portnum = 0; portnum < 4; portnum++) {
uint pmsk = 0,
ppar = 0,
psor = 0,
pdir = 0,
podr = 0,
pdat = 0;
iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
iop_conf_t *eiopc = iopc + 32;
uint msk = 1;
/*
* NOTE:
* index 0 refers to pin 31,
* index 31 refers to pin 0
*/
while (iopc < eiopc) {
if (iopc->conf) {
pmsk |= msk;
if (iopc->ppar)
ppar |= msk;
if (iopc->psor)
psor |= msk;
if (iopc->pdir)
pdir |= msk;
if (iopc->podr)
podr |= msk;
if (iopc->pdat)
pdat |= msk;
}
msk <<= 1;
iopc++;
}
if (pmsk != 0) {
volatile ioport_t *iop = ioport_addr (immr, portnum);
uint tpmsk = ~pmsk;
/*
* the (somewhat confused) paragraph at the
* bottom of page 35-5 warns that there might
* be "unknown behaviour" when programming
* PSORx and PDIRx, if PPARx = 1, so I
* decided this meant I had to disable the
* dedicated function first, and enable it
* last.
*/
iop->ppar &= tpmsk;
iop->psor = (iop->psor & tpmsk) | psor;
iop->podr = (iop->podr & tpmsk) | podr;
iop->pdat = (iop->pdat & tpmsk) | pdat;
iop->pdir = (iop->pdir & tpmsk) | pdir;
iop->ppar |= ppar;
}
}
}
#endif
/*
* Breathe some life into the CPU...
*
* Set up the memory map
* initialize a bunch of registers
*/
void cpu_init_f (void)
{
DECLARE_GLOBAL_DATA_PTR;
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_lbc_t *memctl = &immap->im_lbc;
extern void m8560_cpm_reset (void);
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
/* Clear initial global data */
memset ((void *) gd, 0, sizeof (gd_t));
#ifdef CONFIG_MPC8560
config_8560_ioports(immap);
#endif
/* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
* addresses - these have to be modified later when FLASH size
* has been determined
*/
#if defined(CFG_OR0_REMAP)
memctl->or0 = CFG_OR0_REMAP;
#endif
#if defined(CFG_OR1_REMAP)
memctl->or1 = CFG_OR1_REMAP;
#endif
/* now restrict to preliminary range */
#if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
memctl->br0 = CFG_BR0_PRELIM;
memctl->or0 = CFG_OR0_PRELIM;
#endif
#if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
memctl->or1 = CFG_OR1_PRELIM;
memctl->br1 = CFG_BR1_PRELIM;
#endif
#if !defined(CONFIG_MPC85xx)
#if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
memctl->or2 = CFG_OR2_PRELIM;
memctl->br2 = CFG_BR2_PRELIM;
#endif
#endif
#if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
memctl->or3 = CFG_OR3_PRELIM;
memctl->br3 = CFG_BR3_PRELIM;
#endif
#if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
memctl->or4 = CFG_OR4_PRELIM;
memctl->br4 = CFG_BR4_PRELIM;
#endif
#if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
memctl->or5 = CFG_OR5_PRELIM;
memctl->br5 = CFG_BR5_PRELIM;
#endif
#if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
memctl->or6 = CFG_OR6_PRELIM;
memctl->br6 = CFG_BR6_PRELIM;
#endif
#if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
memctl->or7 = CFG_OR7_PRELIM;
memctl->br7 = CFG_BR7_PRELIM;
#endif
#if defined(CONFIG_MPC8560)
m8560_cpm_reset();
#endif
}
/*
* We initialize L2 as cache here.
*/
int cpu_init_r (void)
{
#if defined(CONFIG_L2_CACHE)
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache;
volatile uint temp;
asm("msync;isync");
l2cache->l2ctl = 0x68000000; /* invalidate */
temp = l2cache->l2ctl;
asm("msync;isync");
l2cache->l2ctl = 0xa8000000; /* enable 256KB L2 cache */
temp = l2cache->l2ctl;
asm("msync;isync");
printf("L2 cache enabled: 256KB\n");
#else
printf("L2 cache disabled.\n");
#endif
return 0;
}
|
