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Heiko Schocherc2485362008-10-15 09:39:08 +02001/*
2 * (C) Copyright 2008
3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
4 *
Holger Brunck4f745bf2011-06-05 22:22:18 +00005 * (C) Copyright 2011
6 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
Heiko Schocherc2485362008-10-15 09:39:08 +02009 */
10
11#include <common.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020012#include <ioports.h>
Holger Bruncka9417ce2011-05-04 01:47:30 +000013#include <command.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020014#include <malloc.h>
Simon Glasseca86fa2014-04-10 20:01:24 -060015#include <cli_hush.h>
Heiko Schocher210c8c02008-11-21 08:29:40 +010016#include <net.h>
Heiko Schocher62ddcf02010-02-18 08:08:25 +010017#include <netdev.h>
Heiko Schocher210c8c02008-11-21 08:29:40 +010018#include <asm/io.h>
Thomas Herzmann92c91082011-05-12 19:59:22 +000019#include <linux/ctype.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020020
Thomas Herzmannc1b3d842012-05-04 10:55:58 +020021#if defined(CONFIG_POST)
22#include "post.h"
23#endif
Holger Brunck4f745bf2011-06-05 22:22:18 +000024#include "common.h"
Heiko Schocherc2485362008-10-15 09:39:08 +020025#include <i2c.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020026
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020027DECLARE_GLOBAL_DATA_PTR;
Heiko Schocher6c11aea2011-03-08 10:51:15 +010028
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020029/*
30 * Set Keymile specific environment variables
31 * Currently only some memory layout variables are calculated here
32 * ... ------------------------------------------------
33 * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
34 * ... |<------------------- pram ------------------->|
35 * ... ------------------------------------------------
36 * @END_OF_RAM: denotes the RAM size
37 * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
38 * @pram : preserved ram size in k
39 * @varaddr : startadress for /var mounted into RAM
40 */
41int set_km_env(void)
42{
43 uchar buf[32];
44 unsigned int pnvramaddr;
45 unsigned int pram;
46 unsigned int varaddr;
Andreas Huber2a7714c2011-09-13 23:06:11 +000047 unsigned int kernelmem;
48 char *p;
49 unsigned long rootfssize = 0;
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020050
51 pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
52 - CONFIG_KM_PNVRAM;
53 sprintf((char *)buf, "0x%x", pnvramaddr);
54 setenv("pnvramaddr", (char *)buf);
55
Andreas Huber2a7714c2011-09-13 23:06:11 +000056 /* try to read rootfssize (ram image) from envrionment */
57 p = getenv("rootfssize");
58 if (p != NULL)
59 strict_strtoul(p, 16, &rootfssize);
60 pram = (rootfssize + CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM +
61 CONFIG_KM_PNVRAM) / 0x400;
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020062 sprintf((char *)buf, "0x%x", pram);
63 setenv("pram", (char *)buf);
64
65 varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
66 sprintf((char *)buf, "0x%x", varaddr);
67 setenv("varaddr", (char *)buf);
Andreas Huber2a7714c2011-09-13 23:06:11 +000068
69 kernelmem = gd->ram_size - 0x400 * pram;
70 sprintf((char *)buf, "0x%x", kernelmem);
71 setenv("kernelmem", (char *)buf);
72
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020073 return 0;
74}
75
Holger Bruncke792aff2011-09-14 10:54:12 +020076#if defined(CONFIG_SYS_I2C_INIT_BOARD)
Heiko Schocher6c11aea2011-03-08 10:51:15 +010077static void i2c_write_start_seq(void)
Heiko Schocherc2485362008-10-15 09:39:08 +020078{
Heiko Schocherb11f53f2011-03-15 16:52:29 +010079 set_sda(1);
80 udelay(DELAY_HALF_PERIOD);
81 set_scl(1);
82 udelay(DELAY_HALF_PERIOD);
83 set_sda(0);
84 udelay(DELAY_HALF_PERIOD);
85 set_scl(0);
86 udelay(DELAY_HALF_PERIOD);
Heiko Schocherc2485362008-10-15 09:39:08 +020087}
88
Heiko Schocherb11f53f2011-03-15 16:52:29 +010089/*
90 * I2C is a synchronous protocol and resets of the processor in the middle
91 * of an access can block the I2C Bus until a powerdown of the full unit is
92 * done. This function toggles the SCL until the SCL and SCA line are
93 * released, but max. 16 times, after this a I2C start-sequence is sent.
94 * This I2C Deblocking mechanism was developed by Keymile in association
95 * with Anatech and Atmel in 1998.
Heiko Schocherc2485362008-10-15 09:39:08 +020096 */
Holger Brunck4f745bf2011-06-05 22:22:18 +000097int i2c_make_abort(void)
Heiko Schocherc2485362008-10-15 09:39:08 +020098{
99 int scl_state = 0;
100 int sda_state = 0;
101 int i = 0;
102 int ret = 0;
103
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100104 if (!get_sda()) {
Heiko Schocherc2485362008-10-15 09:39:08 +0200105 ret = -1;
106 while (i < 16) {
107 i++;
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100108 set_scl(0);
109 udelay(DELAY_ABORT_SEQ);
110 set_scl(1);
111 udelay(DELAY_ABORT_SEQ);
112 scl_state = get_scl();
113 sda_state = get_sda();
Heiko Schocherc2485362008-10-15 09:39:08 +0200114 if (scl_state && sda_state) {
115 ret = 0;
116 break;
117 }
118 }
119 }
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100120 if (ret == 0)
121 for (i = 0; i < 5; i++)
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100122 i2c_write_start_seq();
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100123
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100124 /* respect stop setup time */
125 udelay(DELAY_ABORT_SEQ);
126 set_scl(1);
127 udelay(DELAY_ABORT_SEQ);
128 set_sda(1);
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100129 get_sda();
Heiko Schocherc2485362008-10-15 09:39:08 +0200130
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100131 return ret;
132}
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100133
134/**
135 * i2c_init_board - reset i2c bus. When the board is powercycled during a
136 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
137 */
138void i2c_init_board(void)
139{
140 /* Now run the AbortSequence() */
141 i2c_make_abort();
Heiko Schocherc2485362008-10-15 09:39:08 +0200142}
Holger Bruncke792aff2011-09-14 10:54:12 +0200143#endif
144
Valentin Longchamp99f62492013-10-18 11:47:18 +0200145#if defined(CONFIG_KM_COMMON_ETH_INIT)
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100146int board_eth_init(bd_t *bis)
Heiko Schocher210c8c02008-11-21 08:29:40 +0100147{
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100148 if (ethernet_present())
Heiko Schocher62ddcf02010-02-18 08:08:25 +0100149 return cpu_eth_init(bis);
150
151 return -1;
Heiko Schocher210c8c02008-11-21 08:29:40 +0100152}
Valentin Longchamp99f62492013-10-18 11:47:18 +0200153#endif
Holger Bruncka9417ce2011-05-04 01:47:30 +0000154
155/*
156 * do_setboardid command
157 * read out the board id and the hw key from the intventory EEPROM and set
158 * this values as environment variables.
159 */
160static int do_setboardid(cmd_tbl_t *cmdtp, int flag, int argc,
161 char *const argv[])
162{
163 unsigned char buf[32];
164 char *p;
165
166 p = get_local_var("IVM_BoardId");
167 if (p == NULL) {
168 printf("can't get the IVM_Boardid\n");
169 return 1;
170 }
171 sprintf((char *)buf, "%s", p);
172 setenv("boardid", (char *)buf);
Holger Brunck9485e772011-07-04 22:23:59 +0000173 printf("set boardid=%s\n", buf);
Holger Bruncka9417ce2011-05-04 01:47:30 +0000174
175 p = get_local_var("IVM_HWKey");
176 if (p == NULL) {
177 printf("can't get the IVM_HWKey\n");
178 return 1;
179 }
180 sprintf((char *)buf, "%s", p);
181 setenv("hwkey", (char *)buf);
Holger Brunck9485e772011-07-04 22:23:59 +0000182 printf("set hwkey=%s\n", buf);
183 printf("Execute manually saveenv for persistent storage.\n");
Holger Bruncka9417ce2011-05-04 01:47:30 +0000184
185 return 0;
186}
187
188U_BOOT_CMD(km_setboardid, 1, 0, do_setboardid, "setboardid", "read out bid and "
189 "hwkey from IVM and set in environment");
Thomas Herzmann92c91082011-05-12 19:59:22 +0000190
191/*
192 * command km_checkbidhwk
193 * if "boardid" and "hwkey" are not already set in the environment, do:
194 * if a "boardIdListHex" exists in the environment:
195 * - read ivm data for boardid and hwkey
196 * - compare each entry of the boardIdListHex with the
197 * IVM data:
198 * if match:
199 * set environment variables boardid, boardId,
200 * hwkey, hwKey to the found values
201 * both (boardid and boardId) are set because
202 * they might be used differently in the
203 * application and in the init scripts (?)
204 * return 0 in case of match, 1 if not match or error
205 */
Holger Brunck283857d2013-05-06 15:02:40 +0200206static int do_checkboardidhwk(cmd_tbl_t *cmdtp, int flag, int argc,
Thomas Herzmann92c91082011-05-12 19:59:22 +0000207 char *const argv[])
208{
209 unsigned long ivmbid = 0, ivmhwkey = 0;
210 unsigned long envbid = 0, envhwkey = 0;
211 char *p;
212 int verbose = argc > 1 && *argv[1] == 'v';
213 int rc = 0;
214
215 /*
216 * first read out the real inventory values, these values are
217 * already stored in the local hush variables
218 */
219 p = get_local_var("IVM_BoardId");
220 if (p == NULL) {
221 printf("can't get the IVM_Boardid\n");
222 return 1;
223 }
224 rc = strict_strtoul(p, 16, &ivmbid);
225
226 p = get_local_var("IVM_HWKey");
227 if (p == NULL) {
228 printf("can't get the IVM_HWKey\n");
229 return 1;
230 }
231 rc = strict_strtoul(p, 16, &ivmhwkey);
232
233 if (!ivmbid || !ivmhwkey) {
234 printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n");
235 return rc;
236 }
237
238 /* now try to read values from environment if available */
239 p = getenv("boardid");
240 if (p != NULL)
241 rc = strict_strtoul(p, 16, &envbid);
242 p = getenv("hwkey");
243 if (p != NULL)
244 rc = strict_strtoul(p, 16, &envhwkey);
245
246 if (rc != 0) {
247 printf("strict_strtoul returns error: %d", rc);
248 return rc;
249 }
250
251 if (!envbid || !envhwkey) {
252 /*
253 * BoardId/HWkey not available in the environment, so try the
254 * environment variable for BoardId/HWkey list
255 */
256 char *bidhwklist = getenv("boardIdListHex");
257
258 if (bidhwklist) {
259 int found = 0;
260 char *rest = bidhwklist;
261 char *endp;
262
263 if (verbose) {
264 printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n",
265 ivmbid, ivmhwkey);
266 printf("boardIdHwKeyList: %s\n",
267 bidhwklist);
268 }
269 while (!found) {
270 /* loop over each bid/hwkey pair in the list */
271 unsigned long bid = 0;
272 unsigned long hwkey = 0;
273
274 while (*rest && !isxdigit(*rest))
275 rest++;
276 /*
277 * use simple_strtoul because we need &end and
278 * we know we got non numeric char at the end
279 */
280 bid = simple_strtoul(rest, &endp, 16);
281 /* BoardId and HWkey are separated with a "_" */
282 if (*endp == '_') {
283 rest = endp + 1;
284 /*
285 * use simple_strtoul because we need
286 * &end
287 */
288 hwkey = simple_strtoul(rest, &endp, 16);
289 rest = endp;
290 while (*rest && !isxdigit(*rest))
291 rest++;
292 }
293 if ((!bid) || (!hwkey)) {
294 /* end of list */
295 break;
296 }
297 if (verbose) {
298 printf("trying bid=0x%lX, hwkey=%ld\n",
299 bid, hwkey);
300 }
301 /*
302 * Compare the values of the found entry in the
303 * list with the valid values which are stored
304 * in the inventory eeprom. If they are equal
Holger Brunckba8be322011-06-05 22:22:17 +0000305 * set the values in environment variables.
Thomas Herzmann92c91082011-05-12 19:59:22 +0000306 */
307 if ((bid == ivmbid) && (hwkey == ivmhwkey)) {
308 char buf[10];
309
310 found = 1;
311 envbid = bid;
312 envhwkey = hwkey;
313 sprintf(buf, "%lx", bid);
314 setenv("boardid", buf);
315 sprintf(buf, "%lx", hwkey);
316 setenv("hwkey", buf);
Thomas Herzmann92c91082011-05-12 19:59:22 +0000317 }
318 } /* end while( ! found ) */
319 }
320 }
321
322 /* compare now the values */
323 if ((ivmbid == envbid) && (ivmhwkey == envhwkey)) {
324 printf("boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey);
325 rc = 0; /* match */
326 } else {
Holger Brunck9485e772011-07-04 22:23:59 +0000327 printf("Error: env boardid=0x%3lX, hwkey=%ld\n", envbid,
328 envhwkey);
Thomas Herzmann92c91082011-05-12 19:59:22 +0000329 printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid, ivmhwkey);
330 rc = 1; /* don't match */
331 }
332 return rc;
333}
334
335U_BOOT_CMD(km_checkbidhwk, 2, 0, do_checkboardidhwk,
336 "check boardid and hwkey",
337 "[v]\n - check environment parameter "\
338 "\"boardIdListHex\" against stored boardid and hwkey "\
339 "from the IVM\n v: verbose output"
340);
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200341
342/*
343 * command km_checktestboot
344 * if the testpin of the board is asserted, return 1
345 * * else return 0
346 */
Holger Brunck283857d2013-05-06 15:02:40 +0200347static int do_checktestboot(cmd_tbl_t *cmdtp, int flag, int argc,
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200348 char *const argv[])
349{
350 int testpin = 0;
351 char *s = NULL;
352 int testboot = 0;
353 int verbose = argc > 1 && *argv[1] == 'v';
354
355#if defined(CONFIG_POST)
356 testpin = post_hotkeys_pressed();
357 s = getenv("test_bank");
358#endif
359 /* when test_bank is not set, act as if testpin is not asserted */
360 testboot = (testpin != 0) && (s);
361 if (verbose) {
362 printf("testpin = %d\n", testpin);
Wolfgang Denk00605172014-11-06 14:02:57 +0100363 /* cppcheck-suppress nullPointer */
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200364 printf("test_bank = %s\n", s ? s : "not set");
365 printf("boot test app : %s\n", (testboot) ? "yes" : "no");
366 }
367 /* return 0 means: testboot, therefore we need the inversion */
368 return !testboot;
369}
370
371U_BOOT_CMD(km_checktestboot, 2, 0, do_checktestboot,
372 "check if testpin is asserted",
373 "[v]\n v - verbose output"
374);