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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Heiko Schocherc2485362008-10-15 09:39:08 +02002/*
3 * (C) Copyright 2008
4 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 *
Holger Brunck4f745bf2011-06-05 22:22:18 +00006 * (C) Copyright 2011
7 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
Heiko Schocherc2485362008-10-15 09:39:08 +02008 */
9
10#include <common.h>
Simon Glass9fb625c2019-08-01 09:46:51 -060011#include <env.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>
Simon Glassc05ed002020-05-10 11:40:11 -060020#include <linux/delay.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020021
Thomas Herzmannc1b3d842012-05-04 10:55:58 +020022#if defined(CONFIG_POST)
23#include "post.h"
24#endif
Holger Brunck4f745bf2011-06-05 22:22:18 +000025#include "common.h"
Heiko Schocherc2485362008-10-15 09:39:08 +020026#include <i2c.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020027
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020028DECLARE_GLOBAL_DATA_PTR;
Heiko Schocher6c11aea2011-03-08 10:51:15 +010029
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020030/*
31 * Set Keymile specific environment variables
32 * Currently only some memory layout variables are calculated here
33 * ... ------------------------------------------------
34 * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
35 * ... |<------------------- pram ------------------->|
36 * ... ------------------------------------------------
37 * @END_OF_RAM: denotes the RAM size
38 * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
39 * @pram : preserved ram size in k
40 * @varaddr : startadress for /var mounted into RAM
41 */
42int set_km_env(void)
43{
44 uchar buf[32];
45 unsigned int pnvramaddr;
46 unsigned int pram;
47 unsigned int varaddr;
Andreas Huber2a7714c2011-09-13 23:06:11 +000048 unsigned int kernelmem;
49 char *p;
50 unsigned long rootfssize = 0;
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020051
52 pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
53 - CONFIG_KM_PNVRAM;
54 sprintf((char *)buf, "0x%x", pnvramaddr);
Simon Glass382bee52017-08-03 12:22:09 -060055 env_set("pnvramaddr", (char *)buf);
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020056
Robert P. J. Day62a3b7d2016-07-15 13:44:45 -040057 /* try to read rootfssize (ram image) from environment */
Simon Glass00caae62017-08-03 12:22:12 -060058 p = env_get("rootfssize");
Andreas Huber2a7714c2011-09-13 23:06:11 +000059 if (p != NULL)
60 strict_strtoul(p, 16, &rootfssize);
61 pram = (rootfssize + CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM +
62 CONFIG_KM_PNVRAM) / 0x400;
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020063 sprintf((char *)buf, "0x%x", pram);
Simon Glass382bee52017-08-03 12:22:09 -060064 env_set("pram", (char *)buf);
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020065
66 varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
67 sprintf((char *)buf, "0x%x", varaddr);
Simon Glass382bee52017-08-03 12:22:09 -060068 env_set("varaddr", (char *)buf);
Andreas Huber2a7714c2011-09-13 23:06:11 +000069
70 kernelmem = gd->ram_size - 0x400 * pram;
71 sprintf((char *)buf, "0x%x", kernelmem);
Simon Glass382bee52017-08-03 12:22:09 -060072 env_set("kernelmem", (char *)buf);
Andreas Huber2a7714c2011-09-13 23:06:11 +000073
Heiko Schocherf1fef1d2010-04-26 13:07:28 +020074 return 0;
75}
76
Holger Bruncke792aff2011-09-14 10:54:12 +020077#if defined(CONFIG_SYS_I2C_INIT_BOARD)
Heiko Schocher6c11aea2011-03-08 10:51:15 +010078static void i2c_write_start_seq(void)
Heiko Schocherc2485362008-10-15 09:39:08 +020079{
Heiko Schocherb11f53f2011-03-15 16:52:29 +010080 set_sda(1);
81 udelay(DELAY_HALF_PERIOD);
82 set_scl(1);
83 udelay(DELAY_HALF_PERIOD);
84 set_sda(0);
85 udelay(DELAY_HALF_PERIOD);
86 set_scl(0);
87 udelay(DELAY_HALF_PERIOD);
Heiko Schocherc2485362008-10-15 09:39:08 +020088}
89
Heiko Schocherb11f53f2011-03-15 16:52:29 +010090/*
91 * I2C is a synchronous protocol and resets of the processor in the middle
92 * of an access can block the I2C Bus until a powerdown of the full unit is
93 * done. This function toggles the SCL until the SCL and SCA line are
94 * released, but max. 16 times, after this a I2C start-sequence is sent.
95 * This I2C Deblocking mechanism was developed by Keymile in association
96 * with Anatech and Atmel in 1998.
Heiko Schocherc2485362008-10-15 09:39:08 +020097 */
Holger Brunck4f745bf2011-06-05 22:22:18 +000098int i2c_make_abort(void)
Heiko Schocherc2485362008-10-15 09:39:08 +020099{
100 int scl_state = 0;
101 int sda_state = 0;
102 int i = 0;
103 int ret = 0;
104
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100105 if (!get_sda()) {
Heiko Schocherc2485362008-10-15 09:39:08 +0200106 ret = -1;
107 while (i < 16) {
108 i++;
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100109 set_scl(0);
110 udelay(DELAY_ABORT_SEQ);
111 set_scl(1);
112 udelay(DELAY_ABORT_SEQ);
113 scl_state = get_scl();
114 sda_state = get_sda();
Heiko Schocherc2485362008-10-15 09:39:08 +0200115 if (scl_state && sda_state) {
116 ret = 0;
117 break;
118 }
119 }
120 }
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100121 if (ret == 0)
122 for (i = 0; i < 5; i++)
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100123 i2c_write_start_seq();
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100124
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100125 /* respect stop setup time */
126 udelay(DELAY_ABORT_SEQ);
127 set_scl(1);
128 udelay(DELAY_ABORT_SEQ);
129 set_sda(1);
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100130 get_sda();
Heiko Schocherc2485362008-10-15 09:39:08 +0200131
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100132 return ret;
133}
Heiko Schocher6c11aea2011-03-08 10:51:15 +0100134
135/**
136 * i2c_init_board - reset i2c bus. When the board is powercycled during a
137 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
138 */
139void i2c_init_board(void)
140{
141 /* Now run the AbortSequence() */
142 i2c_make_abort();
Heiko Schocherc2485362008-10-15 09:39:08 +0200143}
Holger Bruncke792aff2011-09-14 10:54:12 +0200144#endif
145
Valentin Longchamp99f62492013-10-18 11:47:18 +0200146#if defined(CONFIG_KM_COMMON_ETH_INIT)
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900147int board_eth_init(struct bd_info *bis)
Heiko Schocher210c8c02008-11-21 08:29:40 +0100148{
Heiko Schocherb11f53f2011-03-15 16:52:29 +0100149 if (ethernet_present())
Heiko Schocher62ddcf02010-02-18 08:08:25 +0100150 return cpu_eth_init(bis);
151
152 return -1;
Heiko Schocher210c8c02008-11-21 08:29:40 +0100153}
Valentin Longchamp99f62492013-10-18 11:47:18 +0200154#endif
Holger Bruncka9417ce2011-05-04 01:47:30 +0000155
156/*
157 * do_setboardid command
158 * read out the board id and the hw key from the intventory EEPROM and set
159 * this values as environment variables.
160 */
Simon Glass09140112020-05-10 11:40:03 -0600161static int do_setboardid(struct cmd_tbl *cmdtp, int flag, int argc,
162 char *const argv[])
Holger Bruncka9417ce2011-05-04 01:47:30 +0000163{
164 unsigned char buf[32];
165 char *p;
166
167 p = get_local_var("IVM_BoardId");
168 if (p == NULL) {
169 printf("can't get the IVM_Boardid\n");
170 return 1;
171 }
Ben Whitten192bc692015-12-30 13:05:58 +0000172 strcpy((char *)buf, p);
Simon Glass382bee52017-08-03 12:22:09 -0600173 env_set("boardid", (char *)buf);
Holger Brunck9485e772011-07-04 22:23:59 +0000174 printf("set boardid=%s\n", buf);
Holger Bruncka9417ce2011-05-04 01:47:30 +0000175
176 p = get_local_var("IVM_HWKey");
177 if (p == NULL) {
178 printf("can't get the IVM_HWKey\n");
179 return 1;
180 }
Ben Whitten192bc692015-12-30 13:05:58 +0000181 strcpy((char *)buf, p);
Simon Glass382bee52017-08-03 12:22:09 -0600182 env_set("hwkey", (char *)buf);
Holger Brunck9485e772011-07-04 22:23:59 +0000183 printf("set hwkey=%s\n", buf);
184 printf("Execute manually saveenv for persistent storage.\n");
Holger Bruncka9417ce2011-05-04 01:47:30 +0000185
186 return 0;
187}
188
189U_BOOT_CMD(km_setboardid, 1, 0, do_setboardid, "setboardid", "read out bid and "
190 "hwkey from IVM and set in environment");
Thomas Herzmann92c91082011-05-12 19:59:22 +0000191
192/*
193 * command km_checkbidhwk
194 * if "boardid" and "hwkey" are not already set in the environment, do:
195 * if a "boardIdListHex" exists in the environment:
196 * - read ivm data for boardid and hwkey
197 * - compare each entry of the boardIdListHex with the
198 * IVM data:
199 * if match:
200 * set environment variables boardid, boardId,
201 * hwkey, hwKey to the found values
202 * both (boardid and boardId) are set because
203 * they might be used differently in the
204 * application and in the init scripts (?)
205 * return 0 in case of match, 1 if not match or error
206 */
Simon Glass09140112020-05-10 11:40:03 -0600207static int do_checkboardidhwk(struct cmd_tbl *cmdtp, int flag, int argc,
208 char *const argv[])
Thomas Herzmann92c91082011-05-12 19:59:22 +0000209{
210 unsigned long ivmbid = 0, ivmhwkey = 0;
211 unsigned long envbid = 0, envhwkey = 0;
212 char *p;
213 int verbose = argc > 1 && *argv[1] == 'v';
214 int rc = 0;
215
216 /*
217 * first read out the real inventory values, these values are
218 * already stored in the local hush variables
219 */
220 p = get_local_var("IVM_BoardId");
221 if (p == NULL) {
222 printf("can't get the IVM_Boardid\n");
223 return 1;
224 }
225 rc = strict_strtoul(p, 16, &ivmbid);
226
227 p = get_local_var("IVM_HWKey");
228 if (p == NULL) {
229 printf("can't get the IVM_HWKey\n");
230 return 1;
231 }
232 rc = strict_strtoul(p, 16, &ivmhwkey);
233
234 if (!ivmbid || !ivmhwkey) {
235 printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n");
236 return rc;
237 }
238
239 /* now try to read values from environment if available */
Simon Glass00caae62017-08-03 12:22:12 -0600240 p = env_get("boardid");
Thomas Herzmann92c91082011-05-12 19:59:22 +0000241 if (p != NULL)
242 rc = strict_strtoul(p, 16, &envbid);
Simon Glass00caae62017-08-03 12:22:12 -0600243 p = env_get("hwkey");
Thomas Herzmann92c91082011-05-12 19:59:22 +0000244 if (p != NULL)
245 rc = strict_strtoul(p, 16, &envhwkey);
246
247 if (rc != 0) {
248 printf("strict_strtoul returns error: %d", rc);
249 return rc;
250 }
251
252 if (!envbid || !envhwkey) {
253 /*
254 * BoardId/HWkey not available in the environment, so try the
255 * environment variable for BoardId/HWkey list
256 */
Simon Glass00caae62017-08-03 12:22:12 -0600257 char *bidhwklist = env_get("boardIdListHex");
Thomas Herzmann92c91082011-05-12 19:59:22 +0000258
259 if (bidhwklist) {
260 int found = 0;
261 char *rest = bidhwklist;
262 char *endp;
263
264 if (verbose) {
265 printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n",
266 ivmbid, ivmhwkey);
267 printf("boardIdHwKeyList: %s\n",
268 bidhwklist);
269 }
270 while (!found) {
271 /* loop over each bid/hwkey pair in the list */
272 unsigned long bid = 0;
273 unsigned long hwkey = 0;
274
275 while (*rest && !isxdigit(*rest))
276 rest++;
277 /*
278 * use simple_strtoul because we need &end and
279 * we know we got non numeric char at the end
280 */
281 bid = simple_strtoul(rest, &endp, 16);
282 /* BoardId and HWkey are separated with a "_" */
283 if (*endp == '_') {
284 rest = endp + 1;
285 /*
286 * use simple_strtoul because we need
287 * &end
288 */
289 hwkey = simple_strtoul(rest, &endp, 16);
290 rest = endp;
291 while (*rest && !isxdigit(*rest))
292 rest++;
293 }
294 if ((!bid) || (!hwkey)) {
295 /* end of list */
296 break;
297 }
298 if (verbose) {
299 printf("trying bid=0x%lX, hwkey=%ld\n",
300 bid, hwkey);
301 }
302 /*
303 * Compare the values of the found entry in the
304 * list with the valid values which are stored
305 * in the inventory eeprom. If they are equal
Holger Brunckba8be322011-06-05 22:22:17 +0000306 * set the values in environment variables.
Thomas Herzmann92c91082011-05-12 19:59:22 +0000307 */
308 if ((bid == ivmbid) && (hwkey == ivmhwkey)) {
309 char buf[10];
310
311 found = 1;
312 envbid = bid;
313 envhwkey = hwkey;
314 sprintf(buf, "%lx", bid);
Simon Glass382bee52017-08-03 12:22:09 -0600315 env_set("boardid", buf);
Thomas Herzmann92c91082011-05-12 19:59:22 +0000316 sprintf(buf, "%lx", hwkey);
Simon Glass382bee52017-08-03 12:22:09 -0600317 env_set("hwkey", buf);
Thomas Herzmann92c91082011-05-12 19:59:22 +0000318 }
319 } /* end while( ! found ) */
320 }
321 }
322
323 /* compare now the values */
324 if ((ivmbid == envbid) && (ivmhwkey == envhwkey)) {
325 printf("boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey);
326 rc = 0; /* match */
327 } else {
Holger Brunck9485e772011-07-04 22:23:59 +0000328 printf("Error: env boardid=0x%3lX, hwkey=%ld\n", envbid,
329 envhwkey);
Thomas Herzmann92c91082011-05-12 19:59:22 +0000330 printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid, ivmhwkey);
331 rc = 1; /* don't match */
332 }
333 return rc;
334}
335
336U_BOOT_CMD(km_checkbidhwk, 2, 0, do_checkboardidhwk,
337 "check boardid and hwkey",
338 "[v]\n - check environment parameter "\
339 "\"boardIdListHex\" against stored boardid and hwkey "\
340 "from the IVM\n v: verbose output"
341);
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200342
343/*
344 * command km_checktestboot
345 * if the testpin of the board is asserted, return 1
346 * * else return 0
347 */
Simon Glass09140112020-05-10 11:40:03 -0600348static int do_checktestboot(struct cmd_tbl *cmdtp, int flag, int argc,
349 char *const argv[])
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200350{
351 int testpin = 0;
352 char *s = NULL;
353 int testboot = 0;
354 int verbose = argc > 1 && *argv[1] == 'v';
355
356#if defined(CONFIG_POST)
357 testpin = post_hotkeys_pressed();
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200358#endif
Simon Glass00caae62017-08-03 12:22:12 -0600359 s = env_get("test_bank");
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200360 /* when test_bank is not set, act as if testpin is not asserted */
361 testboot = (testpin != 0) && (s);
362 if (verbose) {
363 printf("testpin = %d\n", testpin);
Wolfgang Denk00605172014-11-06 14:02:57 +0100364 /* cppcheck-suppress nullPointer */
Thomas Herzmannc1b3d842012-05-04 10:55:58 +0200365 printf("test_bank = %s\n", s ? s : "not set");
366 printf("boot test app : %s\n", (testboot) ? "yes" : "no");
367 }
368 /* return 0 means: testboot, therefore we need the inversion */
369 return !testboot;
370}
371
372U_BOOT_CMD(km_checktestboot, 2, 0, do_checktestboot,
373 "check if testpin is asserted",
374 "[v]\n v - verbose output"
375);