3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #if defined(CONFIG_KM82XX)
35 #include <linux/ctype.h>
37 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
41 #include "../common/common.h"
42 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
45 static void i2c_write_start_seq(void);
46 static int i2c_make_abort(void);
47 DECLARE_GLOBAL_DATA_PTR;
49 int ivm_calc_crc(unsigned char *buf, int len)
51 const unsigned short crc_tab[16] = {
52 0x0000, 0xCC01, 0xD801, 0x1400,
53 0xF001, 0x3C00, 0x2800, 0xE401,
54 0xA001, 0x6C00, 0x7800, 0xB401,
55 0x5000, 0x9C01, 0x8801, 0x4400};
57 unsigned short crc = 0; /* final result */
58 unsigned short r1 = 0; /* temp */
59 unsigned char byte = 0; /* input buffer */
62 /* calculate CRC from array data */
63 for (i = 0; i < len; i++) {
67 r1 = crc_tab[crc & 0xF];
68 crc = ((crc) >> 4) & 0x0FFF;
69 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
72 r1 = crc_tab[crc & 0xF];
73 crc = (crc >> 4) & 0x0FFF;
74 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
80 * Set Keymile specific environment variables
81 * Currently only some memory layout variables are calculated here
82 * ... ------------------------------------------------
83 * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
84 * ... |<------------------- pram ------------------->|
85 * ... ------------------------------------------------
86 * @END_OF_RAM: denotes the RAM size
87 * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
88 * @pram : preserved ram size in k
89 * @varaddr : startadress for /var mounted into RAM
94 unsigned int pnvramaddr;
98 pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
100 sprintf((char *)buf, "0x%x", pnvramaddr);
101 setenv("pnvramaddr", (char *)buf);
103 pram = (CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM + CONFIG_KM_PNVRAM) /
105 sprintf((char *)buf, "0x%x", pram);
106 setenv("pram", (char *)buf);
108 varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
109 sprintf((char *)buf, "0x%x", varaddr);
110 setenv("varaddr", (char *)buf);
114 static int ivm_set_value(char *name, char *value)
119 sprintf(tempbuf, "%s=%s", name, value);
120 return set_local_var(tempbuf, 0);
122 unset_local_var(name);
127 static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
131 unsigned char valbuf[30];
133 if ((buf[off + 0] != buf[off + 2]) &&
134 (buf[off + 2] != buf[off + 4])) {
135 printf("%s Error corrupted %s\n", __func__, name);
138 val = buf[off + 0] + (buf[off + 1] << 8);
139 if ((val == 0) && (check == 1))
142 sprintf((char *)valbuf, "%x", val);
143 ivm_set_value(name, (char *)valbuf);
147 #define INV_BLOCKSIZE 0x100
148 #define INV_DATAADDRESS 0x21
149 #define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
151 #define IVM_POS_SHORT_TEXT 0
152 #define IVM_POS_MANU_ID 1
153 #define IVM_POS_MANU_SERIAL 2
154 #define IVM_POS_PART_NUMBER 3
155 #define IVM_POS_BUILD_STATE 4
156 #define IVM_POS_SUPPLIER_PART_NUMBER 5
157 #define IVM_POS_DELIVERY_DATE 6
158 #define IVM_POS_SUPPLIER_BUILD_STATE 7
159 #define IVM_POS_CUSTOMER_ID 8
160 #define IVM_POS_CUSTOMER_PROD_ID 9
161 #define IVM_POS_HISTORY 10
162 #define IVM_POS_SYMBOL_ONLY 11
164 static char convert_char(char c)
166 return (c < ' ' || c > '~') ? '.' : c;
169 static int ivm_findinventorystring(int type,
170 unsigned char* const string,
171 unsigned long maxlen,
175 unsigned long cr = 0;
176 unsigned long addr = INV_DATAADDRESS;
177 unsigned long size = 0;
178 unsigned long nr = type;
179 int stop = 0; /* stop on semicolon */
181 memset(string, '\0', maxlen);
183 case IVM_POS_SYMBOL_ONLY:
192 /* Look for the requested number of CR. */
193 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
194 if ((buf[addr] == '\r')) {
201 * the expected number of CR was found until the end of the IVM
202 * content --> fill string
204 if (addr < INVENTORYDATASIZE) {
205 /* Copy the IVM string in the corresponding string */
206 for (; (buf[addr] != '\r') &&
207 ((buf[addr] != ';') || (!stop)) &&
208 (size < (maxlen - 1) &&
209 (addr < INVENTORYDATASIZE)); addr++)
211 size += sprintf((char *)string + size, "%c",
212 convert_char (buf[addr]));
216 * copy phase is done: check if everything is ok. If not,
217 * the inventory data is most probably corrupted: tell
218 * the world there is a problem!
220 if (addr == INVENTORYDATASIZE) {
222 printf("Error end of string not found\n");
223 } else if ((size >= (maxlen - 1)) &&
224 (buf[addr] != '\r')) {
226 printf("string too long till next CR\n");
230 * some CR are missing...
231 * the inventory data is most probably corrupted
234 printf("not enough cr found\n");
239 #define GET_STRING(name, which, len) \
240 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
241 ivm_set_value(name, (char *)valbuf); \
244 static int ivm_check_crc(unsigned char *buf, int block)
247 unsigned long crceeprom;
249 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
250 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
251 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
252 if (crc != crceeprom) {
254 printf("Error CRC Block: %d EEprom: calculated: \
255 %lx EEprom: %lx\n", block, crc, crceeprom);
261 static int ivm_analyze_block2(unsigned char *buf, int len)
263 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
267 sprintf((char *)valbuf, "%pM", buf);
268 ivm_set_value("IVM_MacAddress", (char *)valbuf);
269 /* if an offset is defined, add it */
270 #if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
271 if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
272 unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
274 val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
275 buf[4] = (val >> 16) & 0xff;
276 buf[5] = (val >> 8) & 0xff;
278 sprintf((char *)valbuf, "%pM", buf);
281 setenv((char *)"ethaddr", (char *)valbuf);
284 count = (buf[10] << 24) +
288 if (count == 0xffffffff)
290 sprintf((char *)valbuf, "%lx", count);
291 ivm_set_value("IVM_MacCount", (char *)valbuf);
295 int ivm_analyze_eeprom(unsigned char *buf, int len)
298 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
301 if (ivm_check_crc(buf, 0) != 0)
304 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
305 "IVM_BoardId", 0, 1);
306 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
309 sprintf((char *)valbuf, "%x", ((val / 100) % 10));
310 ivm_set_value("IVM_HWVariant", (char *)valbuf);
311 sprintf((char *)valbuf, "%x", (val % 100));
312 ivm_set_value("IVM_HWVersion", (char *)valbuf);
314 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
315 "IVM_Functions", 12, 0);
317 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
318 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
319 tmp = (unsigned char *) getenv("IVM_DeviceName");
321 int len = strlen((char *)tmp);
326 ivm_set_value("IVM_ShortText",
327 (char *)&tmp[i + 1]);
333 ivm_set_value("IVM_ShortText", NULL);
335 ivm_set_value("IVM_ShortText", NULL);
337 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
338 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
339 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
340 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
341 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
342 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
343 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
344 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
345 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
347 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
349 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
350 CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
355 int ivm_read_eeprom(void)
357 #if defined(CONFIG_I2C_MUX)
358 I2C_MUX_DEVICE *dev = NULL;
360 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
362 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
365 #if defined(CONFIG_I2C_MUX)
366 /* First init the Bus, select the Bus */
367 #if defined(CONFIG_SYS_I2C_IVM_BUS)
368 dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
370 buf = (unsigned char *) getenv("EEprom_ivm");
372 dev = i2c_mux_ident_muxstring(buf);
375 printf("Error couldnt add Bus for IVM\n");
378 i2c_set_bus_num(dev->busid);
381 buf = (unsigned char *) getenv("EEprom_ivm_addr");
383 dev_addr = simple_strtoul((char *)buf, NULL, 16);
385 /* add deblocking here */
388 ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
389 CONFIG_SYS_IVM_EEPROM_MAX_LEN);
391 printf ("Error reading EEprom\n");
395 return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
398 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
399 #define DELAY_ABORT_SEQ 62 /* @200kHz 9 clocks = 44us, 62us is ok */
400 #define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
402 #if defined(CONFIG_KM_82XX)
403 #define SDA_MASK 0x00010000
404 #define SCL_MASK 0x00020000
405 void set_pin(int state, unsigned long mask)
407 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
410 setbits_be32(&iop->pdat, mask);
412 clrbits_be32(&iop->pdat, mask);
414 setbits_be32(&iop->pdir, mask);
417 static int get_pin(unsigned long mask)
419 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
421 clrbits_be32(&iop->pdir, mask);
422 return 0 != (in_be32(&iop->pdat) & mask);
425 static void set_sda(int state)
427 set_pin(state, SDA_MASK);
430 static void set_scl(int state)
432 set_pin(state, SCL_MASK);
435 static int get_sda(void)
437 return get_pin(SDA_MASK);
440 static int get_scl(void)
442 return get_pin(SCL_MASK);
445 #if defined(CONFIG_HARD_I2C)
446 static void setports(int gpio)
448 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
451 clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
452 clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
454 setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
455 clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK));
456 setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
462 #if !defined(CONFIG_MPC83xx)
463 static void i2c_write_start_seq(void)
466 udelay(DELAY_HALF_PERIOD);
468 udelay(DELAY_HALF_PERIOD);
470 udelay(DELAY_HALF_PERIOD);
472 udelay(DELAY_HALF_PERIOD);
476 * I2C is a synchronous protocol and resets of the processor in the middle
477 * of an access can block the I2C Bus until a powerdown of the full unit is
478 * done. This function toggles the SCL until the SCL and SCA line are
479 * released, but max. 16 times, after this a I2C start-sequence is sent.
480 * This I2C Deblocking mechanism was developed by Keymile in association
481 * with Anatech and Atmel in 1998.
483 static int i2c_make_abort(void)
486 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
487 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
488 i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
491 * disable I2C controller first, otherwhise it thinks we want to
492 * talk to the slave port...
494 clrbits_8(&i2c->i2c_i2mod, 0x01);
496 /* Set the PortPins to GPIO */
510 udelay(DELAY_ABORT_SEQ);
512 udelay(DELAY_ABORT_SEQ);
513 scl_state = get_scl();
514 sda_state = get_sda();
515 if (scl_state && sda_state) {
522 for (i = 0; i < 5; i++)
523 i2c_write_start_seq();
525 /* respect stop setup time */
526 udelay(DELAY_ABORT_SEQ);
528 udelay(DELAY_ABORT_SEQ);
532 #if defined(CONFIG_HARD_I2C)
533 /* Set the PortPins back to use for I2C */
540 #if defined(CONFIG_MPC83xx)
541 static void i2c_write_start_seq(void)
544 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
545 udelay(DELAY_ABORT_SEQ);
546 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
547 udelay(DELAY_ABORT_SEQ);
548 out_8(&dev->cr, (I2C_CR_MEN));
551 static int i2c_make_abort(void)
554 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
561 /* wait after each operation to finsh with a delay */
562 out_8(&dev->cr, (I2C_CR_MSTA));
563 udelay(DELAY_ABORT_SEQ);
564 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
565 udelay(DELAY_ABORT_SEQ);
566 dummy = in_8(&dev->dr);
567 udelay(DELAY_ABORT_SEQ);
568 last = in_8(&dev->dr);
572 * do read until the last bit is 1, but stop if the full eeprom is
575 while (((last & 0x01) != 0x01) &&
576 (nbr_read < CONFIG_SYS_IVM_EEPROM_MAX_LEN)) {
577 udelay(DELAY_ABORT_SEQ);
578 last = in_8(&dev->dr);
581 if ((last & 0x01) != 0x01)
583 if ((last != 0xff) || (nbr_read > 1))
584 printf("[INFO] i2c abort after %d bytes (0x%02x)\n",
586 udelay(DELAY_ABORT_SEQ);
587 out_8(&dev->cr, (I2C_CR_MEN));
588 udelay(DELAY_ABORT_SEQ);
589 /* clear status reg */
592 for (i = 0; i < 5; i++)
593 i2c_write_start_seq();
595 printf("[ERROR] i2c abort failed after %d bytes (0x%02x)\n",
603 * i2c_init_board - reset i2c bus. When the board is powercycled during a
604 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
606 void i2c_init_board(void)
608 /* Now run the AbortSequence() */
614 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
615 int fdt_set_node_and_value(void *blob,
624 nodeoffset = fdt_path_offset(blob, nodename);
625 if (nodeoffset >= 0) {
626 ret = fdt_setprop(blob, nodeoffset, regname, var,
629 printf("ft_blob_update(): cannot set %s/%s "
630 "property err:%s\n", nodename, regname,
633 printf("ft_blob_update(): cannot find %s node "
634 "err:%s\n", nodename, fdt_strerror(nodeoffset));
639 int fdt_get_node_and_value(void *blob,
647 nodeoffset = fdt_path_offset(blob, nodename);
648 if (nodeoffset >= 0) {
649 *var = (void *)fdt_getprop(blob, nodeoffset, propname, &len);
652 printf("%s no value\n", __func__);
654 } else if (len > 0) {
657 printf("libfdt fdt_getprop(): %s\n",
662 printf("%s: cannot find %s node err:%s\n", __func__,
663 nodename, fdt_strerror(nodeoffset));
669 #if !defined(MACH_TYPE_KM_KIRKWOOD)
670 int ethernet_present(void)
672 struct km_bec_fpga *base =
673 (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;
675 return in_8(&base->bprth) & PIGGY_PRESENT;
679 int board_eth_init(bd_t *bis)
681 if (ethernet_present())
682 return cpu_eth_init(bis);
688 * do_setboardid command
689 * read out the board id and the hw key from the intventory EEPROM and set
690 * this values as environment variables.
692 static int do_setboardid(cmd_tbl_t *cmdtp, int flag, int argc,
695 unsigned char buf[32];
698 p = get_local_var("IVM_BoardId");
700 printf("can't get the IVM_Boardid\n");
703 sprintf((char *)buf, "%s", p);
704 setenv("boardid", (char *)buf);
706 p = get_local_var("IVM_HWKey");
708 printf("can't get the IVM_HWKey\n");
711 sprintf((char *)buf, "%s", p);
712 setenv("hwkey", (char *)buf);
717 U_BOOT_CMD(km_setboardid, 1, 0, do_setboardid, "setboardid", "read out bid and "
718 "hwkey from IVM and set in environment");
721 * command km_checkbidhwk
722 * if "boardid" and "hwkey" are not already set in the environment, do:
723 * if a "boardIdListHex" exists in the environment:
724 * - read ivm data for boardid and hwkey
725 * - compare each entry of the boardIdListHex with the
728 * set environment variables boardid, boardId,
729 * hwkey, hwKey to the found values
730 * both (boardid and boardId) are set because
731 * they might be used differently in the
732 * application and in the init scripts (?)
733 * return 0 in case of match, 1 if not match or error
735 int do_checkboardidhwk(cmd_tbl_t *cmdtp, int flag, int argc,
738 unsigned long ivmbid = 0, ivmhwkey = 0;
739 unsigned long envbid = 0, envhwkey = 0;
741 int verbose = argc > 1 && *argv[1] == 'v';
745 * first read out the real inventory values, these values are
746 * already stored in the local hush variables
748 p = get_local_var("IVM_BoardId");
750 printf("can't get the IVM_Boardid\n");
753 rc = strict_strtoul(p, 16, &ivmbid);
755 p = get_local_var("IVM_HWKey");
757 printf("can't get the IVM_HWKey\n");
760 rc = strict_strtoul(p, 16, &ivmhwkey);
762 if (!ivmbid || !ivmhwkey) {
763 printf("Error: IVM_BoardId and/or IVM_HWKey not set!\n");
767 /* now try to read values from environment if available */
768 p = getenv("boardid");
770 rc = strict_strtoul(p, 16, &envbid);
773 rc = strict_strtoul(p, 16, &envhwkey);
776 printf("strict_strtoul returns error: %d", rc);
780 if (!envbid || !envhwkey) {
782 * BoardId/HWkey not available in the environment, so try the
783 * environment variable for BoardId/HWkey list
785 char *bidhwklist = getenv("boardIdListHex");
789 char *rest = bidhwklist;
793 printf("IVM_BoardId: %ld, IVM_HWKey=%ld\n",
795 printf("boardIdHwKeyList: %s\n",
799 /* loop over each bid/hwkey pair in the list */
800 unsigned long bid = 0;
801 unsigned long hwkey = 0;
803 while (*rest && !isxdigit(*rest))
806 * use simple_strtoul because we need &end and
807 * we know we got non numeric char at the end
809 bid = simple_strtoul(rest, &endp, 16);
810 /* BoardId and HWkey are separated with a "_" */
814 * use simple_strtoul because we need
817 hwkey = simple_strtoul(rest, &endp, 16);
819 while (*rest && !isxdigit(*rest))
822 if ((!bid) || (!hwkey)) {
827 printf("trying bid=0x%lX, hwkey=%ld\n",
831 * Compare the values of the found entry in the
832 * list with the valid values which are stored
833 * in the inventory eeprom. If they are equal
834 * store the values in environment variables
835 * and save the environment.
836 * This can only happen once for the lifetime
837 * of a board, because once saved the function
838 * will never reach the while loop.
840 if ((bid == ivmbid) && (hwkey == ivmhwkey)) {
846 sprintf(buf, "%lx", bid);
847 setenv("boardid", buf);
848 sprintf(buf, "%lx", hwkey);
849 setenv("hwkey", buf);
852 } /* end while( ! found ) */
856 /* compare now the values */
857 if ((ivmbid == envbid) && (ivmhwkey == envhwkey)) {
858 printf("boardid=0x%3lX, hwkey=%ld\n", envbid, envhwkey);
861 printf("Error: env bId=0x%3lX, hwKey=%ld\n", envbid, envhwkey);
862 printf(" IVM bId=0x%3lX, hwKey=%ld\n", ivmbid, ivmhwkey);
863 rc = 1; /* don't match */
868 U_BOOT_CMD(km_checkbidhwk, 2, 0, do_checkboardidhwk,
869 "check boardid and hwkey",
870 "[v]\n - check environment parameter "\
871 "\"boardIdListHex\" against stored boardid and hwkey "\
872 "from the IVM\n v: verbose output"