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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2001-2015
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Joe Hershberger, National Instruments
6 */
7
8#include <bootstage.h>
9#include <dm.h>
10#include <env.h>
11#include <miiphy.h>
12#include <net.h>
13#include "eth_internal.h"
14
15int eth_env_get_enetaddr_by_index(const char *base_name, int index,
16 uchar *enetaddr)
17{
18 char enetvar[32];
19 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
20 return eth_env_get_enetaddr(enetvar, enetaddr);
21}
22
23int eth_env_set_enetaddr_by_index(const char *base_name, int index,
24 uchar *enetaddr)
25{
26 char enetvar[32];
27 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
28 return eth_env_set_enetaddr(enetvar, enetaddr);
29}
30
31void eth_common_init(void)
32{
33 bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
34}
35
36int eth_mac_skip(int index)
37{
38 char enetvar[15];
39 char *skip_state;
40
41 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
42 skip_state = env_get(enetvar);
43 return skip_state != NULL;
44}
45
46void eth_current_changed(void)
47{
48 char *act = env_get("ethact");
49 char *ethrotate;
50
51 /*
52 * The call to eth_get_dev() below has a side effect of rotating
53 * ethernet device if uc_priv->current == NULL. This is not what
54 * we want when 'ethrotate' variable is 'no'.
55 */
56 ethrotate = env_get("ethrotate");
57 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
58 return;
59
60 /* update current ethernet name */
61 if (eth_get_dev()) {
62 if (act == NULL || strcmp(act, eth_get_name()) != 0)
63 env_set("ethact", eth_get_name());
64 }
65 /*
66 * remove the variable completely if there is no active
67 * interface
68 */
69 else if (act != NULL)
70 env_set("ethact", NULL);
71}
72
73void eth_try_another(int first_restart)
74{
75 static void *first_failed;
76 char *ethrotate;
77
78 /*
79 * Do not rotate between network interfaces when
80 * 'ethrotate' variable is set to 'no'.
81 */
82 ethrotate = env_get("ethrotate");
83 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
84 return;
85
86 if (!eth_get_dev())
87 return;
88
89 if (first_restart)
90 first_failed = eth_get_dev();
91
92 eth_set_current_to_next();
93
94 eth_current_changed();
95
96 if (first_failed == eth_get_dev())
97 net_restart_wrap = 1;
98}
99
100void eth_set_current(void)
101{
102 static char *act;
103 static int env_changed_id;
104 int env_id;
105
106 env_id = env_get_id();
107 if ((act == NULL) || (env_changed_id != env_id)) {
108 act = env_get("ethact");
109 env_changed_id = env_id;
110 }
111
112 if (act == NULL) {
113 char *ethprime = env_get("ethprime");
114 void *dev = NULL;
115
116 if (ethprime)
117 dev = eth_get_dev_by_name(ethprime);
118 if (dev)
119 eth_set_dev(dev);
120 else
121 eth_set_dev(NULL);
122 } else {
123 eth_set_dev(eth_get_dev_by_name(act));
124 }
125
126 eth_current_changed();
127}
128
129const char *eth_get_name(void)
130{
131 return eth_get_dev() ? eth_get_dev()->name : "unknown";
132}