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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
|
/*
* (C) Copyright 2001
* Paul Geerinckx
*
* 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 <mpc8xx.h>
#include "atm.h"
#include <i2c.h>
/* ------------------------------------------------------------------------- */
static long int dram_size (long int, long int *, long int);
/* ------------------------------------------------------------------------- */
/* used PLD registers */
# define PLD_GCR1_REG (unsigned char *) (0x10000000 + 0)
# define PLD_EXT_RES (unsigned char *) (0x10000000 + 10)
# define PLD_EXT_FETH (unsigned char *) (0x10000000 + 11)
# define PLD_EXT_LED (unsigned char *) (0x10000000 + 12)
# define PLD_EXT_X21 (unsigned char *) (0x10000000 + 13)
#define _NOT_USED_ 0xFFFFFFFF
const uint sdram_table[] = {
/*
* Single Read. (Offset 0 in UPMA RAM)
*/
0xFE2DB004, 0xF0AA7004, 0xF0A5F400, 0xF3AFFC47, /* last */
_NOT_USED_,
/*
* SDRAM Initialization (offset 5 in UPMA RAM)
*
* This is no UPM entry point. The following definition uses
* the remaining space to establish an initialization
* sequence, which is executed by a RUN command.
*
*/
0xFFFAF834, 0xFFE5B435, /* last */
_NOT_USED_,
/*
* Burst Read. (Offset 8 in UPMA RAM)
*/
0xFE2DB004, 0xF0AF7404, 0xF0AFFC00, 0xF0AFFC00,
0xF0AFFC00, 0xF0AAF800, 0xF1A5E447, /* last */
_NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Single Write. (Offset 18 in UPMA RAM)
*/
0xFE29B300, 0xF1A27304, 0xFFA5F747, /* last */
_NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20 in UPMA RAM)
*/
0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
0xF1AAF804, 0xFFA5F447, /* last */
_NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Refresh (Offset 30 in UPMA RAM)
*/
0xFFAC3884, 0xFFAC3404, 0xFFAFFC04, 0xFFAFFC84,
0xFFAFFC07, /* last */
_NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* MRS sequence (Offset 38 in UPMA RAM)
*/
0xFFAAB834, 0xFFA57434, 0xFFAFFC05, /* last */
_NOT_USED_,
/*
* Exception. (Offset 3c in UPMA RAM)
*/
0xFFAFFC04, 0xFFAFFC05, /* last */
_NOT_USED_, _NOT_USED_,
};
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
volatile iop8xx_t *iop = &immap->im_ioport;
volatile fec_t *fecp = &immap->im_cpm.cp_fec;
long int size;
upmconfig (UPMA, (uint *) sdram_table,
sizeof (sdram_table) / sizeof (uint));
/*
* Preliminary prescaler for refresh (depends on number of
* banks): This value is selected for four cycles every 62.4 us
* with two SDRAM banks or four cycles every 31.2 us with one
* bank. It will be adjusted after memory sizing.
*/
memctl->memc_mptpr = CFG_MPTPR;
memctl->memc_mar = 0x00000088;
/*
* Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
* preliminary addresses - these have to be modified after the
* SDRAM size has been determined.
*/
memctl->memc_or2 = CFG_OR2_PRELIM;
memctl->memc_br2 = CFG_BR2_PRELIM;
memctl->memc_mamr = CFG_MAMR & (~(MAMR_PTAE)); /* no refresh yet */
udelay (200);
/* perform SDRAM initializsation sequence */
memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */
udelay (1);
memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */
udelay (1);
memctl->memc_mcr = 0x80004105; /* SDRAM precharge */
udelay (1);
memctl->memc_mcr = 0x80004030; /* SDRAM 16x autorefresh */
udelay (1);
memctl->memc_mcr = 0x80004138; /* SDRAM upload parameters */
udelay (1);
memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
udelay (1000);
/*
* Check Bank 0 Memory Size for re-configuration
*
*/
size = dram_size (CFG_MAMR, (ulong *) SDRAM_BASE_PRELIM,
SDRAM_MAX_SIZE);
udelay (1000);
memctl->memc_mamr = CFG_MAMR;
udelay (1000);
/*
* Final mapping
*/
memctl->memc_or2 = ((-size) & 0xFFFF0000) | CFG_OR2_PRELIM;
memctl->memc_br2 = ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V);
udelay (10000);
/* prepare pin multiplexing for fast ethernet */
atmLoad ();
fecp->fec_ecntrl = 0x00000004; /* rev D3 pinmux SET */
iop->iop_pdpar |= 0x0080; /* set pin as MII_clock */
return (size);
}
/* ------------------------------------------------------------------------- */
/*
* Check memory range for valid RAM. A simple memory test determines
* the actually available RAM size between addresses `base' and
* `base + maxsize'. Some (not all) hardware errors are detected:
* - short between address lines
* - short between data lines
*/
static long int dram_size (long int mamr_value, long int *base,
long int maxsize)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
memctl->memc_mamr = mamr_value;
return (get_ram_size (base, maxsize));
}
/*
* Check Board Identity:
*/
int checkboard (void)
{
return (0);
}
void board_serial_init (void)
{
; /* nothing to do here */
}
void board_ether_init (void)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile iop8xx_t *iop = &immap->im_ioport;
volatile fec_t *fecp = &immap->im_cpm.cp_fec;
atmLoad ();
fecp->fec_ecntrl = 0x00000004; /* rev D3 pinmux SET */
iop->iop_pdpar |= 0x0080; /* set pin as MII_clock */
}
int board_early_init_f (void)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile cpmtimer8xx_t *timers = &immap->im_cpmtimer;
volatile memctl8xx_t *memctl = &immap->im_memctl;
volatile iop8xx_t *iop = &immap->im_ioport;
/* configure the LED timing output pins - port A pin 4 */
iop->iop_papar = 0x0800;
iop->iop_padir = 0x0800;
/* start timer 2 for the 4hz LED blink rate */
timers->cpmt_tmr2 = 0xff2c; /* 4hz for 64mhz */
timers->cpmt_trr2 = 0x000003d0; /* clk/16 , prescale=256 */
timers->cpmt_tgcr = 0x00000810; /* run timer 2 */
/* chip select for PLD access */
memctl->memc_br6 = 0x10000401;
memctl->memc_or6 = 0xFC000908;
/* PLD initial values ( set LEDs, remove reset on LXT) */
*PLD_GCR1_REG = 0x06;
*PLD_EXT_RES = 0xC0;
*PLD_EXT_FETH = 0x40;
*PLD_EXT_LED = 0xFF;
*PLD_EXT_X21 = 0x04;
return 0;
}
void board_get_enetaddr (uchar * addr)
{
int i;
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cpm = &immap->im_cpm;
unsigned int rccrtmp;
char default_mac_addr[] = { 0x00, 0x08, 0x01, 0x02, 0x03, 0x04 };
for (i = 0; i < 6; i++)
addr[i] = default_mac_addr[i];
printf ("There is an error in the i2c driver .. /n");
printf ("You need to fix it first....../n");
rccrtmp = cpm->cp_rccr;
cpm->cp_rccr |= 0x0020;
i2c_reg_read (0xa0, 0);
printf ("seep = '-%c-%c-%c-%c-%c-%c-'\n",
i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0));
cpm->cp_rccr = rccrtmp;
}
|
