3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
6 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 #include <linux/ctype.h>
37 #if defined(CONFIG_POST)
41 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
45 #if !defined(CONFIG_MPC83xx)
46 static void i2c_write_start_seq(void);
49 DECLARE_GLOBAL_DATA_PTR;
52 * Set Keymile specific environment variables
53 * Currently only some memory layout variables are calculated here
54 * ... ------------------------------------------------
55 * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
56 * ... |<------------------- pram ------------------->|
57 * ... ------------------------------------------------
58 * @END_OF_RAM: denotes the RAM size
59 * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
60 * @pram : preserved ram size in k
61 * @varaddr : startadress for /var mounted into RAM
66 unsigned int pnvramaddr;
69 unsigned int kernelmem;
71 unsigned long rootfssize = 0;
73 pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
75 sprintf((char *)buf, "0x%x", pnvramaddr);
76 setenv("pnvramaddr", (char *)buf);
78 /* try to read rootfssize (ram image) from envrionment */
79 p = getenv("rootfssize");
81 strict_strtoul(p, 16, &rootfssize);
82 pram = (rootfssize + CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM +
83 CONFIG_KM_PNVRAM) / 0x400;
84 sprintf((char *)buf, "0x%x", pram);
85 setenv("pram", (char *)buf);
87 varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
88 sprintf((char *)buf, "0x%x", varaddr);
89 setenv("varaddr", (char *)buf);
91 kernelmem = gd->ram_size - 0x400 * pram;
92 sprintf((char *)buf, "0x%x", kernelmem);
93 setenv("kernelmem", (char *)buf);
98 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
99 #if !defined(CONFIG_MPC83xx)
100 static void i2c_write_start_seq(void)
103 udelay(DELAY_HALF_PERIOD);
105 udelay(DELAY_HALF_PERIOD);
107 udelay(DELAY_HALF_PERIOD);
109 udelay(DELAY_HALF_PERIOD);
113 * I2C is a synchronous protocol and resets of the processor in the middle
114 * of an access can block the I2C Bus until a powerdown of the full unit is
115 * done. This function toggles the SCL until the SCL and SCA line are
116 * released, but max. 16 times, after this a I2C start-sequence is sent.
117 * This I2C Deblocking mechanism was developed by Keymile in association
118 * with Anatech and Atmel in 1998.
120 int i2c_make_abort(void)
123 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
124 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
125 i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
128 * disable I2C controller first, otherwhise it thinks we want to
129 * talk to the slave port...
131 clrbits_8(&i2c->i2c_i2mod, 0x01);
133 /* Set the PortPins to GPIO */
147 udelay(DELAY_ABORT_SEQ);
149 udelay(DELAY_ABORT_SEQ);
150 scl_state = get_scl();
151 sda_state = get_sda();
152 if (scl_state && sda_state) {
154 printf("[INFO] i2c abort after %d clocks\n", i);
160 for (i = 0; i < 5; i++)
161 i2c_write_start_seq();
163 printf("[ERROR] i2c abort failed\n");
165 /* respect stop setup time */
166 udelay(DELAY_ABORT_SEQ);
168 udelay(DELAY_ABORT_SEQ);
172 #if defined(CONFIG_HARD_I2C)
173 /* Set the PortPins back to use for I2C */
181 * i2c_init_board - reset i2c bus. When the board is powercycled during a
182 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
184 void i2c_init_board(void)
186 /* Now run the AbortSequence() */
192 #if !defined(MACH_TYPE_KM_KIRKWOOD)
193 int ethernet_present(void)
195 struct km_bec_fpga *base =
196 (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;
198 return in_8(&base->bprth) & PIGGY_PRESENT;
202 int board_eth_init(bd_t *bis)
204 if (ethernet_present())
205 return cpu_eth_init(bis);
211 * do_setboardid command
212 * read out the board id and the hw key from the intventory EEPROM and set
213 * this values as environment variables.
215 static int do_setboardid(cmd_tbl_t *cmdtp, int flag, int argc,
218 unsigned char buf[32];
221 p = get_local_var("IVM_BoardId");
223 printf("can't get the IVM_Boardid\n");
226 sprintf((char *)buf, "%s", p);
227 setenv("boardid", (char *)buf);
228 printf("set boardid=%s\n", buf);
230 p = get_local_var("IVM_HWKey");
232 printf("can't get the IVM_HWKey\n");
235 sprintf((char *)buf, "%s", p);
236 setenv("hwkey", (char *)buf);
237 printf("set hwkey=%s\n", buf);
238 printf("Execute manually saveenv for persistent storage.\n");
243 U_BOOT_CMD(km_setboardid, 1, 0, do_setboardid, "setboardid", "read out bid and "
244 "hwkey from IVM and set in environment");
247 * command km_checkbidhwk
248 * if "boardid" and "hwkey" are not already set in the environment, do:
249 * if a "boardIdListHex" exists in the environment:
250 * - read ivm data for boardid and hwkey
251 * - compare each entry of the boardIdListHex with the
254 * set environment variables boardid, boardId,
255 * hwkey, hwKey to the found values
256 * both (boardid and boardId) are set because
257 * they might be used differently in the
258 * application and in the init scripts (?)
259 * return 0 in case of match, 1 if not match or error
261 int do_checkboardidhwk(cmd_tbl_t *cmdtp, int flag, int argc,
264 unsigned long ivmbid = 0, ivmhwkey = 0;
265 unsigned long envbid = 0, envhwkey = 0;
267 int verbose = argc > 1 && *argv[1] == 'v';
271 * first read out the real inventory values, these values are
272 * already stored in the local hush variables
274 p = get_local_var("IVM_BoardId");
276 printf("can't get the IVM_Boardid\n");
279 rc = strict_strtoul(p, 16, &ivmbid);
281 p = get_local_var("IVM_HWKey");
283 printf("can't get the IVM_HWKey\n");
286 rc = strict_strtoul(p, 16, &ivmhwkey);
288 if (!ivmbid || !ivmhwkey) {
289 printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n");
293 /* now try to read values from environment if available */
294 p = getenv("boardid");
296 rc = strict_strtoul(p, 16, &envbid);
299 rc = strict_strtoul(p, 16, &envhwkey);
302 printf("strict_strtoul returns error: %d", rc);
306 if (!envbid || !envhwkey) {
308 * BoardId/HWkey not available in the environment, so try the
309 * environment variable for BoardId/HWkey list
311 char *bidhwklist = getenv("boardIdListHex");
315 char *rest = bidhwklist;
319 printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n",
321 printf("boardIdHwKeyList: %s\n",
325 /* loop over each bid/hwkey pair in the list */
326 unsigned long bid = 0;
327 unsigned long hwkey = 0;
329 while (*rest && !isxdigit(*rest))
332 * use simple_strtoul because we need &end and
333 * we know we got non numeric char at the end
335 bid = simple_strtoul(rest, &endp, 16);
336 /* BoardId and HWkey are separated with a "_" */
340 * use simple_strtoul because we need
343 hwkey = simple_strtoul(rest, &endp, 16);
345 while (*rest && !isxdigit(*rest))
348 if ((!bid) || (!hwkey)) {
353 printf("trying bid=0x%lX, hwkey=%ld\n",
357 * Compare the values of the found entry in the
358 * list with the valid values which are stored
359 * in the inventory eeprom. If they are equal
360 * set the values in environment variables.
362 if ((bid == ivmbid) && (hwkey == ivmhwkey)) {
368 sprintf(buf, "%lx", bid);
369 setenv("boardid", buf);
370 sprintf(buf, "%lx", hwkey);
371 setenv("hwkey", buf);
373 } /* end while( ! found ) */
377 /* compare now the values */
378 if ((ivmbid == envbid) && (ivmhwkey == envhwkey)) {
379 printf("boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey);
382 printf("Error: env boardid=0x%3lX, hwkey=%ld\n", envbid,
384 printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid, ivmhwkey);
385 rc = 1; /* don't match */
390 U_BOOT_CMD(km_checkbidhwk, 2, 0, do_checkboardidhwk,
391 "check boardid and hwkey",
392 "[v]\n - check environment parameter "\
393 "\"boardIdListHex\" against stored boardid and hwkey "\
394 "from the IVM\n v: verbose output"
398 * command km_checktestboot
399 * if the testpin of the board is asserted, return 1
402 int do_checktestboot(cmd_tbl_t *cmdtp, int flag, int argc,
408 int verbose = argc > 1 && *argv[1] == 'v';
410 #if defined(CONFIG_POST)
411 testpin = post_hotkeys_pressed();
412 s = getenv("test_bank");
414 /* when test_bank is not set, act as if testpin is not asserted */
415 testboot = (testpin != 0) && (s);
417 printf("testpin = %d\n", testpin);
418 printf("test_bank = %s\n", s ? s : "not set");
419 printf("boot test app : %s\n", (testboot) ? "yes" : "no");
421 /* return 0 means: testboot, therefore we need the inversion */
425 U_BOOT_CMD(km_checktestboot, 2, 0, do_checktestboot,
426 "check if testpin is asserted",
427 "[v]\n v - verbose output"