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
|
/*
* (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 <mpc8xx.h>
#include "fpga.h"
/* ------------------------------------------------------------------------- */
static long int dram_size (long int, long int *, long int);
unsigned long flash_init (void);
/* ------------------------------------------------------------------------- */
#define _NOT_USED_ 0xFFFFCC25
const uint sdram_table[] = {
/*
* Single Read. (Offset 00h in UPMA RAM)
*/
0x0F03CC04, 0x00ACCC24, 0x1FF74C20, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Read. (Offset 08h in UPMA RAM)
*/
0x0F03CC04, 0x00ACCC24, 0x00FFCC20, 0x00FFCC20,
0x01FFCC20, 0x1FF74C20, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Single Write. (Offset 18h in UPMA RAM)
*/
0x0F03CC02, 0x00AC0C24, 0x1FF74C25, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Burst Write. (Offset 20h in UPMA RAM)
*/
0x0F03CC00, 0x00AC0C20, 0x00FFFC20, 0x00FFFC22,
0x01FFFC24, 0x1FF74C25, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/*
* Refresh. (Offset 30h in UPMA RAM)
* (Initialization code at 0x36)
*/
0x0FF0CC24, 0xFFFFCC24, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, 0xEFFB8C34, 0x0FF74C34,
0x0FFACCB4, 0x0FF5CC34, 0x0FFCC34, 0x0FFFCCB4,
/*
* Exception. (Offset 3Ch in UPMA RAM)
*/
0x0FEA8C34, 0x1FB54C34, 0xFFFFCC34, _NOT_USED_
};
/* ------------------------------------------------------------------------- */
/*
* Check Board Identity:
*/
int checkboard (void)
{
char *s = getenv ("serial#");
puts ("Board QUANTUM, Serial No: ");
for (; s && *s; ++s) {
if (*s == ' ')
break;
putc (*s);
}
putc ('\n');
return (0); /* success */
}
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
long int size9;
upmconfig (UPMA, (uint *) sdram_table,
sizeof (sdram_table) / sizeof (uint));
/* Refresh clock prescalar */
memctl->memc_mptpr = CFG_MPTPR;
memctl->memc_mar = 0x00000088;
/* Map controller banks 1 to the SDRAM bank */
memctl->memc_or1 = CFG_OR1_PRELIM;
memctl->memc_br1 = CFG_BR1_PRELIM;
memctl->memc_mamr = CFG_MAMR_9COL & (~(MAMR_PTAE)); /* no refresh yet */
udelay (200);
/* perform SDRAM initializsation sequence */
memctl->memc_mcr = 0x80002136; /* SDRAM bank 0 */
udelay (1);
memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
udelay (1000);
/* Check Bank 0 Memory Size,
* 9 column mode
*/
size9 = dram_size (CFG_MAMR_9COL, (long *) SDRAM_BASE_PRELIM,
SDRAM_MAX_SIZE);
/*
* Final mapping:
*/
memctl->memc_or1 = ((-size9) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
udelay (1000);
return (size9);
}
/* ------------------------------------------------------------------------- */
/*
* 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;
volatile ulong *addr;
ulong cnt, val, size;
ulong save[32]; /* to make test non-destructive */
unsigned char i = 0;
memctl->memc_mamr = mamr_value;
for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
addr = (volatile ulong *)(base + cnt); /* pointer arith! */
save[i++] = *addr;
*addr = ~cnt;
}
/* write 0 to base address */
addr = (volatile ulong *)base;
save[i] = *addr;
*addr = 0;
/* check at base address */
if ((val = *addr) != 0) {
/* Restore the original data before leaving the function.
*/
*addr = save[i];
for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
addr = (volatile ulong *) base + cnt;
*addr = save[--i];
}
return (0);
}
for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
addr = (volatile ulong *)(base + cnt); /* pointer arith! */
val = *addr;
*addr = save[--i];
if (val != (~cnt)) {
size = cnt * sizeof (long);
/* Restore the original data before returning
*/
for (cnt <<= 1; cnt <= maxsize / sizeof (long);
cnt <<= 1) {
addr = (volatile ulong *) base + cnt;
*addr = save[--i];
}
return (size);
}
}
return (maxsize);
}
/*
* Miscellaneous intialization
*/
int misc_init_r (void)
{
char *fpga_data_str = getenv ("fpgadata");
char *fpga_size_str = getenv ("fpgasize");
void *fpga_data;
int fpga_size;
int status;
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
int flash_size;
/* Remap FLASH according to real size */
flash_size = flash_init ();
memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-flash_size & 0xFFFF8000);
memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;
if (fpga_data_str && fpga_size_str) {
fpga_data = (void *) simple_strtoul (fpga_data_str, NULL, 16);
fpga_size = simple_strtoul (fpga_size_str, NULL, 10);
status = fpga_boot (fpga_data, fpga_size);
if (status != 0) {
printf ("\nFPGA: Booting failed ");
switch (status) {
case ERROR_FPGA_PRG_INIT_LOW:
printf ("(Timeout: INIT not low after asserting PROGRAM*)\n ");
break;
case ERROR_FPGA_PRG_INIT_HIGH:
printf ("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
break;
case ERROR_FPGA_PRG_DONE:
printf ("(Timeout: DONE not high after programming FPGA)\n ");
break;
}
}
}
return 0;
}
|
