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
|
/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
* Hacked for the Hymod board by Murray.Jensen@cmst.csiro.au, 20-Oct-00
*/
#include <common.h>
#include <mpc8xx.h>
#include <galileo/gt64260R.h>
#include <galileo/memory.h>
#include "intel_flash.h"
/*-----------------------------------------------------------------------
* Protection Flags:
*/
#define FLAG_PROTECT_SET 0x01
#define FLAG_PROTECT_CLEAR 0x02
static void
bank_reset(flash_info_t *info, int sect)
{
bank_addr_t addrw, eaddrw;
addrw = (bank_addr_t)info->start[sect];
eaddrw = BANK_ADDR_NEXT_WORD(addrw);
while (addrw < eaddrw) {
#ifdef FLASH_DEBUG
printf(" writing reset cmd to addr 0x%08lx\n",
(unsigned long)addrw);
#endif
*addrw = BANK_CMD_RST;
addrw++;
}
}
static void
bank_erase_init(flash_info_t *info, int sect)
{
bank_addr_t addrw, saddrw, eaddrw;
int flag;
#ifdef FLASH_DEBUG
printf("0x%08x BANK_CMD_PROG\n", BANK_CMD_PROG);
printf("0x%08x BANK_CMD_ERASE1\n", BANK_CMD_ERASE1);
printf("0x%08x BANK_CMD_ERASE2\n", BANK_CMD_ERASE2);
printf("0x%08x BANK_CMD_CLR_STAT\n", BANK_CMD_CLR_STAT);
printf("0x%08x BANK_CMD_RST\n", BANK_CMD_RST);
printf("0x%08x BANK_STAT_RDY\n", BANK_STAT_RDY);
printf("0x%08x BANK_STAT_ERR\n", BANK_STAT_ERR);
#endif
saddrw = (bank_addr_t)info->start[sect];
eaddrw = BANK_ADDR_NEXT_WORD(saddrw);
#ifdef FLASH_DEBUG
printf("erasing sector %d, start addr = 0x%08lx "
"(bank next word addr = 0x%08lx)\n", sect,
(unsigned long)saddrw, (unsigned long)eaddrw);
#endif
/* Disable intrs which might cause a timeout here */
flag = disable_interrupts();
for (addrw = saddrw; addrw < eaddrw; addrw++) {
#ifdef FLASH_DEBUG
printf(" writing erase cmd to addr 0x%08lx\n",
(unsigned long)addrw);
#endif
*addrw = BANK_CMD_ERASE1;
*addrw = BANK_CMD_ERASE2;
}
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
}
static int
bank_erase_poll(flash_info_t *info, int sect)
{
bank_addr_t addrw, saddrw, eaddrw;
int sectdone, haderr;
saddrw = (bank_addr_t)info->start[sect];
eaddrw = BANK_ADDR_NEXT_WORD(saddrw);
sectdone = 1;
haderr = 0;
for (addrw = saddrw; addrw < eaddrw; addrw++) {
bank_word_t stat = *addrw;
#ifdef FLASH_DEBUG
printf(" checking status at addr "
"0x%08x [0x%08x]\n",
(unsigned long)addrw, stat);
#endif
if ((stat & BANK_STAT_RDY) != BANK_STAT_RDY)
sectdone = 0;
else if ((stat & BANK_STAT_ERR) != 0) {
printf(" failed on sector %d "
"(stat = 0x%08x) at "
"address 0x%p\n",
sect, stat, addrw);
*addrw = BANK_CMD_CLR_STAT;
haderr = 1;
}
}
if (haderr)
return (-1);
else
return (sectdone);
}
int
write_word_intel(bank_addr_t addr, bank_word_t value)
{
bank_word_t stat;
ulong start;
int flag, retval;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
*addr = BANK_CMD_PROG;
*addr = value;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
retval = 0;
/* data polling for D7 */
start = get_timer (0);
do {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
retval = 1;
goto done;
}
stat = *addr;
} while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
if ((stat & BANK_STAT_ERR) != 0) {
printf("flash program failed (stat = 0x%08lx) "
"at address 0x%08lx\n", (ulong)stat, (ulong)addr);
*addr = BANK_CMD_CLR_STAT;
retval = 3;
}
done:
/* reset to read mode */
*addr = BANK_CMD_RST;
return (retval);
}
/*-----------------------------------------------------------------------
*/
int
flash_erase_intel(flash_info_t *info, int s_first, int s_last)
{
int prot, sect, haderr;
ulong start, now, last;
#ifdef FLASH_DEBUG
printf("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
" Bank # %d: ", s_last - s_first + 1, s_first, s_last,
(info - flash_info) + 1);
flash_print_info(info);
#endif
if ((s_first < 0) || (s_first > s_last)) {
if (info->flash_id == FLASH_UNKNOWN) {
printf ("- missing\n");
} else {
printf ("- no sectors to erase\n");
}
return 1;
}
prot = 0;
for (sect=s_first; sect<=s_last; ++sect) {
if (info->protect[sect]) {
prot++;
}
}
if (prot) {
printf("- Warning: %d protected sector%s will not be erased!\n",
prot, (prot > 1 ? "s" : ""));
}
start = get_timer (0);
last = 0;
haderr = 0;
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
ulong estart;
int sectdone;
bank_erase_init(info, sect);
/* wait at least 80us - let's wait 1 ms */
udelay (1000);
estart = get_timer(start);
do {
now = get_timer(start);
if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
printf ("Timeout (sect %d)\n", sect);
haderr = 1;
break;
}
#ifndef FLASH_DEBUG
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc ('.');
last = now;
}
#endif
sectdone = bank_erase_poll(info, sect);
if (sectdone < 0) {
haderr = 1;
break;
}
} while (!sectdone);
if (haderr)
break;
}
}
if (haderr > 0)
printf (" failed\n");
else
printf (" done\n");
/* reset to read mode */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
bank_reset(info, sect);
}
}
return haderr;
}
|
