blob: fef3822aae2c2a9206e7b4a72b3799651f185a7c [file] [log] [blame]
Wolfgang Denkac7eb8a2005-09-14 23:53:32 +02001/*
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>
29#include "../drivers/smc91111.h"
30
31#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
32
33static 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
75static 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
85static int verify_macaddr(char *s)
86{
87 u16 reg;
88 int i, err = 0;
89
90 printf("MAC Address: ");
91 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');
95 if (s)
96 err |= reg != ((u16 *)s)[i];
97 }
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}
118
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
145extern int crcek(void);
146
147int eeprom(int argc, char *argv[])
148{
149 int i, len, ret;
150 unsigned char buf[58], *p;
151
152 app_startup(argv);
153 if (get_version() != XF_VERSION) {
154 printf("Wrong XF_VERSION.\n");
155 printf("Application expects ABI version %d\n", XF_VERSION);
156 printf("Actual U-Boot ABI version %d\n", (int)get_version());
157 return 1;
158 }
159
160 return crcek();
161
162 if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
163 printf("SMSC91111 not found.\n");
164 return 2;
165 }
166
167 /* Called without parameters - print MAC address */
168 if (argc < 2) {
169 verify_macaddr(NULL);
170 return 0;
171 }
172
173 /* Print help message */
174 if (argv[1][1] == 'h') {
175 printf("VoiceBlue EEPROM writer\n");
176 printf("Built: %s at %s\n", __DATE__ , __TIME__ );
177 printf("Usage:\n\t<mac_address> [<element_1>] [<...>]\n");
178 return 0;
179 }
180
181 /* Try to parse information elements */
182 len = sizeof(buf);
183 p = buf;
184 for (i = 2; i < argc; i++) {
185 ret = parse_element(argv[i], p, len);
186 switch (ret) {
187 case -1:
188 printf("Element %d: malformed\n", i - 1);
189 return 3;
190 case -2:
191 printf("Element %d: odd character count\n", i - 1);
192 return 3;
193 case -3:
194 printf("Out of EEPROM memory\n");
195 return 3;
196 default:
197 p += ret;
198 len -= ret;
199 }
200 }
201
202 /* First argument (MAC) is mandatory */
203 set_mac(argv[1]);
204 if (verify_macaddr(argv[1])) {
205 printf("*** MAC address does not match! ***\n");
206 return 4;
207 }
208
209 while (len--)
210 *p++ = 0;
211
212 write_data((u16 *)buf, sizeof(buf) >> 1);
213
214 return 0;
215}