1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2008 Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
4 */
5
6 #include <common.h>
7 #include "rtl8169.h"
8
9 static unsigned char *PCI_MEMR;
10
mac_delay(unsigned int cnt)11 static void mac_delay(unsigned int cnt)
12 {
13 udelay(cnt);
14 }
15
mac_pci_setup(void)16 static void mac_pci_setup(void)
17 {
18 unsigned long pci_data;
19
20 PCI_PAR = 0x00000010;
21 PCI_PDR = 0x00001000;
22 PCI_PAR = 0x00000004;
23 pci_data = PCI_PDR;
24 PCI_PDR = pci_data | 0x00000007;
25 PCI_PAR = 0x00000010;
26
27 PCI_MEMR = (unsigned char *)((PCI_PDR | 0xFE240050) & 0xFFFFFFF0);
28 }
29
EECS(int level)30 static void EECS(int level)
31 {
32 unsigned char data = *PCI_MEMR;
33
34 if (level)
35 *PCI_MEMR = data | 0x08;
36 else
37 *PCI_MEMR = data & 0xf7;
38 }
39
EECLK(int level)40 static void EECLK(int level)
41 {
42 unsigned char data = *PCI_MEMR;
43
44 if (level)
45 *PCI_MEMR = data | 0x04;
46 else
47 *PCI_MEMR = data & 0xfb;
48 }
49
EEDI(int level)50 static void EEDI(int level)
51 {
52 unsigned char data = *PCI_MEMR;
53
54 if (level)
55 *PCI_MEMR = data | 0x02;
56 else
57 *PCI_MEMR = data & 0xfd;
58 }
59
sh7785lcr_bitset(unsigned short bit)60 static inline void sh7785lcr_bitset(unsigned short bit)
61 {
62 if (bit)
63 EEDI(HIGH);
64 else
65 EEDI(LOW);
66
67 EECLK(LOW);
68 mac_delay(TIME1);
69 EECLK(HIGH);
70 mac_delay(TIME1);
71 EEDI(LOW);
72 }
73
sh7785lcr_bitget(void)74 static inline unsigned char sh7785lcr_bitget(void)
75 {
76 unsigned char bit;
77
78 EECLK(LOW);
79 mac_delay(TIME1);
80 bit = *PCI_MEMR & 0x01;
81 EECLK(HIGH);
82 mac_delay(TIME1);
83
84 return bit;
85 }
86
sh7785lcr_setcmd(unsigned char command)87 static inline void sh7785lcr_setcmd(unsigned char command)
88 {
89 sh7785lcr_bitset(BIT_DUMMY);
90 switch (command) {
91 case MAC_EEP_READ:
92 sh7785lcr_bitset(1);
93 sh7785lcr_bitset(1);
94 sh7785lcr_bitset(0);
95 break;
96 case MAC_EEP_WRITE:
97 sh7785lcr_bitset(1);
98 sh7785lcr_bitset(0);
99 sh7785lcr_bitset(1);
100 break;
101 case MAC_EEP_ERACE:
102 sh7785lcr_bitset(1);
103 sh7785lcr_bitset(1);
104 sh7785lcr_bitset(1);
105 break;
106 case MAC_EEP_EWEN:
107 sh7785lcr_bitset(1);
108 sh7785lcr_bitset(0);
109 sh7785lcr_bitset(0);
110 break;
111 case MAC_EEP_EWDS:
112 sh7785lcr_bitset(1);
113 sh7785lcr_bitset(0);
114 sh7785lcr_bitset(0);
115 break;
116 default:
117 break;
118 }
119 }
120
sh7785lcr_getdt(void)121 static inline unsigned short sh7785lcr_getdt(void)
122 {
123 unsigned short data = 0;
124 int i;
125
126 sh7785lcr_bitget(); /* DUMMY */
127 for (i = 0 ; i < 16 ; i++) {
128 data <<= 1;
129 data |= sh7785lcr_bitget();
130 }
131 return data;
132 }
133
sh7785lcr_setadd(unsigned short address)134 static inline void sh7785lcr_setadd(unsigned short address)
135 {
136 sh7785lcr_bitset(address & 0x0020); /* A5 */
137 sh7785lcr_bitset(address & 0x0010); /* A4 */
138 sh7785lcr_bitset(address & 0x0008); /* A3 */
139 sh7785lcr_bitset(address & 0x0004); /* A2 */
140 sh7785lcr_bitset(address & 0x0002); /* A1 */
141 sh7785lcr_bitset(address & 0x0001); /* A0 */
142 }
143
sh7785lcr_setdata(unsigned short data)144 static inline void sh7785lcr_setdata(unsigned short data)
145 {
146 sh7785lcr_bitset(data & 0x8000);
147 sh7785lcr_bitset(data & 0x4000);
148 sh7785lcr_bitset(data & 0x2000);
149 sh7785lcr_bitset(data & 0x1000);
150 sh7785lcr_bitset(data & 0x0800);
151 sh7785lcr_bitset(data & 0x0400);
152 sh7785lcr_bitset(data & 0x0200);
153 sh7785lcr_bitset(data & 0x0100);
154 sh7785lcr_bitset(data & 0x0080);
155 sh7785lcr_bitset(data & 0x0040);
156 sh7785lcr_bitset(data & 0x0020);
157 sh7785lcr_bitset(data & 0x0010);
158 sh7785lcr_bitset(data & 0x0008);
159 sh7785lcr_bitset(data & 0x0004);
160 sh7785lcr_bitset(data & 0x0002);
161 sh7785lcr_bitset(data & 0x0001);
162 }
163
sh7785lcr_datawrite(const unsigned short * data,unsigned short address,unsigned int count)164 static void sh7785lcr_datawrite(const unsigned short *data, unsigned short address,
165 unsigned int count)
166 {
167 unsigned int i;
168
169 for (i = 0; i < count; i++) {
170 EECS(HIGH);
171 EEDI(LOW);
172 mac_delay(TIME1);
173
174 sh7785lcr_setcmd(MAC_EEP_WRITE);
175 sh7785lcr_setadd(address++);
176 sh7785lcr_setdata(*(data + i));
177
178 EECLK(LOW);
179 EEDI(LOW);
180 EECS(LOW);
181 mac_delay(TIME2);
182 }
183 }
184
sh7785lcr_macerase(void)185 static void sh7785lcr_macerase(void)
186 {
187 unsigned int i;
188 unsigned short pci_address = 7;
189
190 for (i = 0; i < 3; i++) {
191 EECS(HIGH);
192 EEDI(LOW);
193 mac_delay(TIME1);
194 sh7785lcr_setcmd(MAC_EEP_ERACE);
195 sh7785lcr_setadd(pci_address++);
196 mac_delay(TIME1);
197 EECLK(LOW);
198 EEDI(LOW);
199 EECS(LOW);
200 }
201
202 mac_delay(TIME2);
203
204 printf("\n\nErace End\n");
205 for (i = 0; i < 10; i++)
206 mac_delay(TIME2);
207 }
208
sh7785lcr_macwrite(unsigned short * data)209 static void sh7785lcr_macwrite(unsigned short *data)
210 {
211 sh7785lcr_macerase();
212
213 sh7785lcr_datawrite(EEPROM_W_Data_8169_A, 0x0000, 7);
214 sh7785lcr_datawrite(data, PCI_EEP_ADDRESS, PCI_MAC_ADDRESS_SIZE);
215 sh7785lcr_datawrite(EEPROM_W_Data_8169_B, 0x000a, 54);
216 }
217
sh7785lcr_macdtrd(unsigned char * buf,unsigned short address,unsigned int count)218 void sh7785lcr_macdtrd(unsigned char *buf, unsigned short address, unsigned int count)
219 {
220 unsigned int i;
221 unsigned short wk;
222
223 for (i = 0 ; i < count; i++) {
224 EECS(HIGH);
225 EEDI(LOW);
226 mac_delay(TIME1);
227 sh7785lcr_setcmd(MAC_EEP_READ);
228 sh7785lcr_setadd(address++);
229 wk = sh7785lcr_getdt();
230
231 *buf++ = (unsigned char)(wk & 0xff);
232 *buf++ = (unsigned char)((wk >> 8) & 0xff);
233 EECLK(LOW);
234 EEDI(LOW);
235 EECS(LOW);
236 }
237 }
238
sh7785lcr_macadrd(unsigned char * buf)239 static void sh7785lcr_macadrd(unsigned char *buf)
240 {
241 *PCI_MEMR = PCI_PROG;
242
243 sh7785lcr_macdtrd(buf, PCI_EEP_ADDRESS, PCI_MAC_ADDRESS_SIZE);
244 }
245
sh7785lcr_eepewen(void)246 static void sh7785lcr_eepewen(void)
247 {
248 *PCI_MEMR = PCI_PROG;
249 mac_delay(TIME1);
250 EECS(LOW);
251 EECLK(LOW);
252 EEDI(LOW);
253 EECS(HIGH);
254 mac_delay(TIME1);
255
256 sh7785lcr_setcmd(MAC_EEP_EWEN);
257 sh7785lcr_bitset(1);
258 sh7785lcr_bitset(1);
259 sh7785lcr_bitset(BIT_DUMMY);
260 sh7785lcr_bitset(BIT_DUMMY);
261 sh7785lcr_bitset(BIT_DUMMY);
262 sh7785lcr_bitset(BIT_DUMMY);
263
264 EECLK(LOW);
265 EEDI(LOW);
266 EECS(LOW);
267 mac_delay(TIME1);
268 }
269
mac_write(unsigned short * data)270 void mac_write(unsigned short *data)
271 {
272 mac_pci_setup();
273 sh7785lcr_eepewen();
274 sh7785lcr_macwrite(data);
275 }
276
mac_read(void)277 void mac_read(void)
278 {
279 unsigned char data[6];
280
281 mac_pci_setup();
282 sh7785lcr_macadrd(data);
283 printf("Mac = %02x:%02x:%02x:%02x:%02x:%02x\n",
284 data[0], data[1], data[2], data[3], data[4], data[5]);
285 }
286
do_set_mac(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])287 int do_set_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
288 {
289 int i;
290 unsigned char mac[6];
291 char *s, *e;
292
293 if (argc != 2)
294 return cmd_usage(cmdtp);
295
296 s = argv[1];
297
298 for (i = 0; i < 6; i++) {
299 mac[i] = s ? simple_strtoul(s, &e, 16) : 0;
300 if (s)
301 s = (*e) ? e + 1 : e;
302 }
303 mac_write((unsigned short *)mac);
304
305 return 0;
306 }
307
308 U_BOOT_CMD(
309 setmac, 2, 1, do_set_mac,
310 "write MAC address for RTL8110SCL",
311 "\n"
312 "setmac <mac address> - write MAC address for RTL8110SCL"
313 );
314
do_print_mac(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])315 int do_print_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
316 {
317 if (argc != 1)
318 return cmd_usage(cmdtp);
319
320 mac_read();
321
322 return 0;
323 }
324
325 U_BOOT_CMD(
326 printmac, 1, 1, do_print_mac,
327 "print MAC address for RTL8110",
328 "\n"
329 " - print MAC address for RTL8110"
330 );
331