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wdenk3c2b3d42005-04-05 23:32:21 +00001/*
2 * (C) Copyright 2005
3 * Ladislav Michl, 2N Telekomunikace, michl@2n.cz
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 *
22 * Some code shamelessly stolen back from Robin Getz.
23 */
24
25#define DEBUG
26
27#include <common.h>
28#include <exports.h>
Jean-Christophe PLAGNIOL-VILLARD2439e4b2007-11-21 21:19:24 +010029#include "../drivers/net/smc91111.h"
wdenk3c2b3d42005-04-05 23:32:21 +000030
31#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
32
wdenk3c2b3d42005-04-05 23:32:21 +000033static u16 read_eeprom_reg(u16 reg)
34{
35 int timeout;
36
37 SMC_SELECT_BANK(2);
38 SMC_outw(reg, PTR_REG);
39
40 SMC_SELECT_BANK(1);
41 SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
42 CTL_REG);
43 timeout = 100;
44 while((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
45 udelay(100);
46 if (timeout == 0) {
47 printf("Timeout Reading EEPROM register %02x\n", reg);
48 return 0;
49 }
50
51 return SMC_inw (GP_REG);
52}
53
54static int write_eeprom_reg(u16 value, u16 reg)
55{
56 int timeout;
57
58 SMC_SELECT_BANK(2);
59 SMC_outw(reg, PTR_REG);
60
61 SMC_SELECT_BANK(1);
62 SMC_outw(value, GP_REG);
63 SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
64 timeout = 100;
65 while ((SMC_inw(CTL_REG) & CTL_STORE) && --timeout)
66 udelay (100);
67 if (timeout == 0) {
68 printf("Timeout Writing EEPROM register %02x\n", reg);
69 return 0;
70 }
71
72 return 1;
73}
74
Wolfgang Denke5445282005-08-12 22:56:51 +020075static int write_data(u16 *buf, int len)
76{
77 u16 reg = 0x23;
78
79 while (len--)
80 write_eeprom_reg(*buf++, reg++);
81
82 return 0;
83}
84
wdenk3c2b3d42005-04-05 23:32:21 +000085static int verify_macaddr(char *s)
86{
87 u16 reg;
88 int i, err = 0;
89
Wolfgang Denke5445282005-08-12 22:56:51 +020090 printf("MAC Address: ");
wdenk3c2b3d42005-04-05 23:32:21 +000091 err = i = 0;
92 for (i = 0; i < 3; i++) {
93 reg = read_eeprom_reg(0x20 + i);
94 printf("%02x:%02x%c", reg & 0xff, reg >> 8, i != 2 ? ':' : '\n');
Wolfgang Denke5445282005-08-12 22:56:51 +020095 if (s)
96 err |= reg != ((u16 *)s)[i];
wdenk3c2b3d42005-04-05 23:32:21 +000097 }
98
99 return err ? 0 : 1;
100}
101
102static int set_mac(char *s)
103{
104 int i;
105 char *e, eaddr[6];
106
107 /* turn string into mac value */
108 for (i = 0; i < 6; i++) {
109 eaddr[i] = simple_strtoul(s, &e, 16);
110 s = (*e) ? e+1 : e;
111 }
112
113 for (i = 0; i < 3; i++)
114 write_eeprom_reg(*(((u16 *)eaddr) + i), 0x20 + i);
115
116 return 0;
117}
Wolfgang Denke5445282005-08-12 22:56:51 +0200118
119static int parse_element(char *s, unsigned char *buf, int len)
120{
121 int cnt;
122 char *p, num[3];
123 unsigned char id;
124
125 id = simple_strtoul(s, &p, 16);
126 if (*p++ != ':')
127 return -1;
128 cnt = 2;
129 num[2] = 0;
130 for (; *p; p += 2) {
131 if (p[1] == 0)
132 return -2;
133 if (cnt + 3 > len)
134 return -3;
135 num[0] = p[0];
136 num[1] = p[1];
137 buf[cnt++] = simple_strtoul(num, NULL, 16);
138 }
139 buf[0] = id;
140 buf[1] = cnt - 2;
141
142 return cnt;
143}
144
145int eeprom(int argc, char *argv[])
146{
147 int i, len, ret;
148 unsigned char buf[58], *p;
Wolfgang Denkb2f50802005-08-12 23:43:12 +0200149
Wolfgang Denke5445282005-08-12 22:56:51 +0200150 app_startup(argv);
151 if (get_version() != XF_VERSION) {
152 printf("Wrong XF_VERSION.\n");
153 printf("Application expects ABI version %d\n", XF_VERSION);
154 printf("Actual U-Boot ABI version %d\n", (int)get_version());
155 return 1;
156 }
157
158 if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
159 printf("SMSC91111 not found.\n");
160 return 2;
161 }
162
163 /* Called without parameters - print MAC address */
164 if (argc < 2) {
165 verify_macaddr(NULL);
166 return 0;
167 }
168
169 /* Print help message */
170 if (argv[1][1] == 'h') {
171 printf("VoiceBlue EEPROM writer\n");
172 printf("Built: %s at %s\n", __DATE__ , __TIME__ );
173 printf("Usage:\n\t<mac_address> [<element_1>] [<...>]\n");
174 return 0;
175 }
176
177 /* Try to parse information elements */
178 len = sizeof(buf);
179 p = buf;
180 for (i = 2; i < argc; i++) {
181 ret = parse_element(argv[i], p, len);
182 switch (ret) {
183 case -1:
184 printf("Element %d: malformed\n", i - 1);
185 return 3;
186 case -2:
187 printf("Element %d: odd character count\n", i - 1);
188 return 3;
189 case -3:
190 printf("Out of EEPROM memory\n");
191 return 3;
192 default:
193 p += ret;
194 len -= ret;
195 }
196 }
197
198 /* First argument (MAC) is mandatory */
199 set_mac(argv[1]);
200 if (verify_macaddr(argv[1])) {
201 printf("*** MAC address does not match! ***\n");
202 return 4;
203 }
204
205 while (len--)
206 *p++ = 0;
207
208 write_data((u16 *)buf, sizeof(buf) >> 1);
209
210 return 0;
211}