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
|
/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/slab.h>
#include <linux/string.h>
#include <bcmdefs.h>
#include <osl.h>
#include <bcmutils.h>
#include <siutils.h>
#include <bcmendian.h>
#include <bcmnvram.h>
#include <sbchipc.h>
#include <bcmsrom.h>
#include <bcmotp.h>
#include <bcmdevs.h>
#include <hndsoc.h>
#define NVR_MSG(x)
typedef struct _vars {
struct _vars *next;
int bufsz; /* allocated size */
int size; /* actual vars size */
char *vars;
} vars_t;
#define VARS_T_OH sizeof(vars_t)
static vars_t *vars;
#define NVRAM_FILE 1
static char *findvar(char *vars, char *lim, const char *name);
#if defined(FLASH)
/* copy flash to ram */
static void get_flash_nvram(si_t *sih, struct nvram_header *nvh)
{
osl_t *osh;
uint nvs, bufsz;
vars_t *new;
osh = si_osh(sih);
nvs = R_REG(osh, &nvh->len) - sizeof(struct nvram_header);
bufsz = nvs + VARS_T_OH;
new = kmalloc(bufsz, GFP_ATOMIC);
if (new == NULL) {
NVR_MSG(("Out of memory for flash vars\n"));
return;
}
new->vars = (char *)new + VARS_T_OH;
new->bufsz = bufsz;
new->size = nvs;
new->next = vars;
vars = new;
bcopy((char *)(&nvh[1]), new->vars, nvs);
NVR_MSG(("%s: flash nvram @ %p, copied %d bytes to %p\n", __func__,
nvh, nvs, new->vars));
}
#endif /* FLASH */
int nvram_init(void *si)
{
/* Make sure we read nvram in flash just once before freeing the memory */
if (vars != NULL) {
NVR_MSG(("nvram_init: called again without calling nvram_exit()\n"));
return 0;
}
return 0;
}
int nvram_append(void *si, char *varlst, uint varsz)
{
uint bufsz = VARS_T_OH;
vars_t *new;
new = kmalloc(bufsz, GFP_ATOMIC);
if (new == NULL)
return BCME_NOMEM;
new->vars = varlst;
new->bufsz = bufsz;
new->size = varsz;
new->next = vars;
vars = new;
return BCME_OK;
}
void nvram_exit(void *si)
{
vars_t *this, *next;
si_t *sih;
sih = (si_t *) si;
this = vars;
if (this)
kfree(this->vars);
while (this) {
next = this->next;
kfree(this);
this = next;
}
vars = NULL;
}
static char *findvar(char *vars, char *lim, const char *name)
{
char *s;
int len;
len = strlen(name);
for (s = vars; (s < lim) && *s;) {
if ((bcmp(s, name, len) == 0) && (s[len] == '='))
return &s[len + 1];
while (*s++)
;
}
return NULL;
}
char *nvram_get(const char *name)
{
char *v = NULL;
vars_t *cur;
for (cur = vars; cur; cur = cur->next) {
v = findvar(cur->vars, cur->vars + cur->size, name);
if (v)
break;
}
return v;
}
int nvram_set(const char *name, const char *value)
{
return 0;
}
int nvram_unset(const char *name)
{
return 0;
}
int nvram_reset(void *si)
{
return 0;
}
int nvram_commit(void)
{
return 0;
}
int nvram_getall(char *buf, int count)
{
int len, resid = count;
vars_t *this;
this = vars;
while (this) {
char *from, *lim, *to;
int acc;
from = this->vars;
lim = (char *)(this->vars + this->size);
to = buf;
acc = 0;
while ((from < lim) && (*from)) {
len = strlen(from) + 1;
if (resid < (acc + len))
return BCME_BUFTOOSHORT;
bcopy(from, to, len);
acc += len;
from += len;
to += len;
}
resid -= acc;
buf += acc;
this = this->next;
}
if (resid < 1)
return BCME_BUFTOOSHORT;
*buf = '\0';
return 0;
}
|
