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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Google Inc.
* Copyright (C) 2015 Intel Corp.
*
* 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; version 2 of the License.
*
* 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.
*/
#include <console/console.h>
#include <cpu/cpu.h>
#include <types.h>
#include <string.h>
#include <wrdd.h>
#include "cros_vpd.h"
/*
* wrdd_domain_value is ISO 3166-2
* ISO 3166-2 code consists of two parts, separated by a hyphen
* The first part is the ISO 3166-1 alpha-2 code of the country;
* The second part is a string of up to three alphanumeric characters
*/
#define VARIANT_SEPARATOR '.'
struct wrdd_code_value_pair {
const char *code;
u16 value;
};
/* Retrieve the regulatory domain information from VPD and
* return it as an uint16.
* WARNING: if domain information is not found in the VPD,
* this function will fall back to the default value
*/
uint16_t wifi_regulatory_domain(void)
{
static struct wrdd_code_value_pair wrdd_table[] = {
{
/* Indonesia
* Alpha-2 code 'ID'
* Full name 'the Republic of Indonesia'
* Alpha-3 code 'IDN'
* Numeric code '360'
*/
.code = "id",
.value = WRDD_REGULATORY_DOMAIN_INDONESIA
}
};
const char *wrdd_domain_key = CROS_VPD_REGION_NAME;
int i;
struct wrdd_code_value_pair *p;
/* wrdd_domain_value is ISO 3166-2 */
char wrdd_domain_code[7];
char *separator;
/* If not found for any reason fall backto the default value */
if (!cros_vpd_gets(wrdd_domain_key, wrdd_domain_code,
ARRAY_SIZE(wrdd_domain_code))) {
printk(BIOS_DEBUG,
"Error: Could not locate '%s' in VPD\n", wrdd_domain_key);
return WRDD_DEFAULT_REGULATORY_DOMAIN;
}
printk(BIOS_DEBUG, "Found '%s'='%s' in VPD\n",
wrdd_domain_key, wrdd_domain_code);
separator = memchr(wrdd_domain_code, VARIANT_SEPARATOR,
ARRAY_SIZE(wrdd_domain_code));
if (separator) {
*separator = '\0';
}
for (i = 0; i < ARRAY_SIZE(wrdd_table); i++) {
p = &wrdd_table[i];
if (strncmp(p->code, wrdd_domain_code,
ARRAY_SIZE(wrdd_domain_code)) == 0)
return p->value;
}
return WRDD_DEFAULT_REGULATORY_DOMAIN;
}
|
