]>
git.ipfire.org Git - people/ms/u-boot.git/blob - board/keymile/common/common.c
3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
6 * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
8 * SPDX-License-Identifier: GPL-2.0+
19 #include <linux/ctype.h>
21 #if defined(CONFIG_POST)
27 DECLARE_GLOBAL_DATA_PTR
;
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
44 unsigned int pnvramaddr
;
47 unsigned int kernelmem
;
49 unsigned long rootfssize
= 0;
51 pnvramaddr
= gd
->ram_size
- CONFIG_KM_RESERVED_PRAM
- CONFIG_KM_PHRAM
53 sprintf((char *)buf
, "0x%x", pnvramaddr
);
54 setenv("pnvramaddr", (char *)buf
);
56 /* try to read rootfssize (ram image) from envrionment */
57 p
= getenv("rootfssize");
59 strict_strtoul(p
, 16, &rootfssize
);
60 pram
= (rootfssize
+ CONFIG_KM_RESERVED_PRAM
+ CONFIG_KM_PHRAM
+
61 CONFIG_KM_PNVRAM
) / 0x400;
62 sprintf((char *)buf
, "0x%x", pram
);
63 setenv("pram", (char *)buf
);
65 varaddr
= gd
->ram_size
- CONFIG_KM_RESERVED_PRAM
- CONFIG_KM_PHRAM
;
66 sprintf((char *)buf
, "0x%x", varaddr
);
67 setenv("varaddr", (char *)buf
);
69 kernelmem
= gd
->ram_size
- 0x400 * pram
;
70 sprintf((char *)buf
, "0x%x", kernelmem
);
71 setenv("kernelmem", (char *)buf
);
76 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
77 static void i2c_write_start_seq(void)
80 udelay(DELAY_HALF_PERIOD
);
82 udelay(DELAY_HALF_PERIOD
);
84 udelay(DELAY_HALF_PERIOD
);
86 udelay(DELAY_HALF_PERIOD
);
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.
97 int i2c_make_abort(void)
109 udelay(DELAY_ABORT_SEQ
);
111 udelay(DELAY_ABORT_SEQ
);
112 scl_state
= get_scl();
113 sda_state
= get_sda();
114 if (scl_state
&& sda_state
) {
121 for (i
= 0; i
< 5; i
++)
122 i2c_write_start_seq();
124 /* respect stop setup time */
125 udelay(DELAY_ABORT_SEQ
);
127 udelay(DELAY_ABORT_SEQ
);
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.
138 void i2c_init_board(void)
140 /* Now run the AbortSequence() */
145 #if defined(CONFIG_KM_COMMON_ETH_INIT)
146 int board_eth_init(bd_t
*bis
)
148 if (ethernet_present())
149 return cpu_eth_init(bis
);
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.
160 static int do_setboardid(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
163 unsigned char buf
[32];
166 p
= get_local_var("IVM_BoardId");
168 printf("can't get the IVM_Boardid\n");
171 sprintf((char *)buf
, "%s", p
);
172 setenv("boardid", (char *)buf
);
173 printf("set boardid=%s\n", buf
);
175 p
= get_local_var("IVM_HWKey");
177 printf("can't get the IVM_HWKey\n");
180 sprintf((char *)buf
, "%s", p
);
181 setenv("hwkey", (char *)buf
);
182 printf("set hwkey=%s\n", buf
);
183 printf("Execute manually saveenv for persistent storage.\n");
188 U_BOOT_CMD(km_setboardid
, 1, 0, do_setboardid
, "setboardid", "read out bid and "
189 "hwkey from IVM and set in environment");
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
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
206 static int do_checkboardidhwk(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
209 unsigned long ivmbid
= 0, ivmhwkey
= 0;
210 unsigned long envbid
= 0, envhwkey
= 0;
212 int verbose
= argc
> 1 && *argv
[1] == 'v';
216 * first read out the real inventory values, these values are
217 * already stored in the local hush variables
219 p
= get_local_var("IVM_BoardId");
221 printf("can't get the IVM_Boardid\n");
224 rc
= strict_strtoul(p
, 16, &ivmbid
);
226 p
= get_local_var("IVM_HWKey");
228 printf("can't get the IVM_HWKey\n");
231 rc
= strict_strtoul(p
, 16, &ivmhwkey
);
233 if (!ivmbid
|| !ivmhwkey
) {
234 printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n");
238 /* now try to read values from environment if available */
239 p
= getenv("boardid");
241 rc
= strict_strtoul(p
, 16, &envbid
);
244 rc
= strict_strtoul(p
, 16, &envhwkey
);
247 printf("strict_strtoul returns error: %d", rc
);
251 if (!envbid
|| !envhwkey
) {
253 * BoardId/HWkey not available in the environment, so try the
254 * environment variable for BoardId/HWkey list
256 char *bidhwklist
= getenv("boardIdListHex");
260 char *rest
= bidhwklist
;
264 printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n",
266 printf("boardIdHwKeyList: %s\n",
270 /* loop over each bid/hwkey pair in the list */
271 unsigned long bid
= 0;
272 unsigned long hwkey
= 0;
274 while (*rest
&& !isxdigit(*rest
))
277 * use simple_strtoul because we need &end and
278 * we know we got non numeric char at the end
280 bid
= simple_strtoul(rest
, &endp
, 16);
281 /* BoardId and HWkey are separated with a "_" */
285 * use simple_strtoul because we need
288 hwkey
= simple_strtoul(rest
, &endp
, 16);
290 while (*rest
&& !isxdigit(*rest
))
293 if ((!bid
) || (!hwkey
)) {
298 printf("trying bid=0x%lX, hwkey=%ld\n",
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
305 * set the values in environment variables.
307 if ((bid
== ivmbid
) && (hwkey
== ivmhwkey
)) {
313 sprintf(buf
, "%lx", bid
);
314 setenv("boardid", buf
);
315 sprintf(buf
, "%lx", hwkey
);
316 setenv("hwkey", buf
);
318 } /* end while( ! found ) */
322 /* compare now the values */
323 if ((ivmbid
== envbid
) && (ivmhwkey
== envhwkey
)) {
324 printf("boardid=0x%3lX, hwkey=%ld\n", envbid
, envhwkey
);
327 printf("Error: env boardid=0x%3lX, hwkey=%ld\n", envbid
,
329 printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid
, ivmhwkey
);
330 rc
= 1; /* don't match */
335 U_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"
343 * command km_checktestboot
344 * if the testpin of the board is asserted, return 1
347 static int do_checktestboot(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
353 int verbose
= argc
> 1 && *argv
[1] == 'v';
355 #if defined(CONFIG_POST)
356 testpin
= post_hotkeys_pressed();
357 s
= getenv("test_bank");
359 /* when test_bank is not set, act as if testpin is not asserted */
360 testboot
= (testpin
!= 0) && (s
);
362 printf("testpin = %d\n", testpin
);
363 /* cppcheck-suppress nullPointer */
364 printf("test_bank = %s\n", s
? s
: "not set");
365 printf("boot test app : %s\n", (testboot
) ? "yes" : "no");
367 /* return 0 means: testboot, therefore we need the inversion */
371 U_BOOT_CMD(km_checktestboot
, 2, 0, do_checktestboot
,
372 "check if testpin is asserted",
373 "[v]\n v - verbose output"