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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2021 Vyacheslav Bocharov
* Author: Vyacheslav Bocharov <adeep@lexina.in>
* Author: Neil Armstrong <narmstrong@baylibre.com>
*
*/
#include <common.h>
#include <dm.h>
#include <adc.h>
#include <env.h>
#include <init.h>
#include <net.h>
#include <asm/io.h>
#include <asm/arch/gx.h>
#include <asm/arch/sm.h>
#include <asm/arch/eth.h>
#include <asm/arch/mem.h>
#define EFUSE_SN_OFFSET 50
#define EFUSE_SN_SIZE 32
#define EFUSE_MAC_OFFSET 0
#define EFUSE_MAC_SIZE 6
#define EFUSE_USID_OFFSET 18
#define EFUSE_USID_SIZE 32
int misc_init_r(void)
{
u8 mac_addr[EFUSE_MAC_SIZE];
char serial[EFUSE_SN_SIZE];
char usid[EFUSE_USID_SIZE];
ssize_t len;
unsigned int adcval;
int ret;
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
mac_addr, EFUSE_MAC_SIZE);
if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
eth_env_set_enetaddr("ethaddr", mac_addr);
else
meson_generate_serial_ethaddr();
}
if (!env_get("serial")) {
len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
EFUSE_SN_SIZE);
if (len == EFUSE_SN_SIZE)
env_set("serial", serial);
}
if (!env_get("usid")) {
len = meson_sm_read_efuse(EFUSE_USID_OFFSET, usid,
EFUSE_USID_SIZE);
if (len == EFUSE_USID_SIZE)
env_set("usid", usid);
}
ret = adc_channel_single_shot("adc@8680", 0, &adcval);
if (adcval < 3000)
env_set("userbutton", "true");
else
env_set("userbutton", "false");
return 0;
}
|
