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wdenkc6097192002-11-03 00:24:07 +00001/*
2 * (C) Copyright 2002
Detlev Zundel792a09e2009-05-13 10:54:10 +02003 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
wdenkc6097192002-11-03 00:24:07 +00004 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24/* #define DEBUG */
25
26#include <common.h>
Ben Warrenb1c0eaa2009-08-25 13:09:37 -070027#include <netdev.h>
wdenkc6097192002-11-03 00:24:07 +000028#include <malloc.h>
kevin.morfitt@fearnside-systems.co.ukac678042009-11-17 18:30:34 +090029#include <asm/arch/s3c24x0_cpu.h>
wdenk8bde7f72003-06-27 21:31:46 +000030#include <command.h>
wdenkc6097192002-11-03 00:24:07 +000031
Wolfgang Denkd87080b2006-03-31 18:32:53 +020032DECLARE_GLOBAL_DATA_PTR;
wdenkc6097192002-11-03 00:24:07 +000033
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020034#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +000035static void spi_init(void);
36static void wait_transmit_done(void);
wdenk82226bf2003-05-20 20:49:01 +000037static void tsc2000_write(unsigned int page, unsigned int reg,
wdenk1cb8e982003-03-06 21:55:29 +000038 unsigned int data);
39static void tsc2000_set_brightness(void);
40#endif
wdenkc6097192002-11-03 00:24:07 +000041#ifdef CONFIG_MODEM_SUPPORT
42static int key_pressed(void);
43extern void disable_putc(void);
44extern int do_mdm_init; /* defined in common/main.c */
45
46/*
47 * We need a delay of at least 500 us after turning on the VFD clock
48 * before we can read any useful information for the CPLD controlling
49 * the keyboard switches. Let's play safe and wait 5 ms. The problem
50 * is that timers are not available yet, so we use a manually timed
51 * loop.
52 */
wdenke95b61c2002-11-04 16:02:40 +000053#define KBD_MDELAY 5000
54static void udelay_no_timer (int usec)
wdenkc6097192002-11-03 00:24:07 +000055{
wdenkc6097192002-11-03 00:24:07 +000056 int i;
wdenke95b61c2002-11-04 16:02:40 +000057 int delay = usec * 3;
wdenkc6097192002-11-03 00:24:07 +000058
wdenk731215e2004-10-10 18:41:04 +000059 for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = MACH_TYPE_TRAB;
wdenkc6097192002-11-03 00:24:07 +000060}
61#endif /* CONFIG_MODEM_SUPPORT */
62
63/*
64 * Miscellaneous platform dependent initialisations
65 */
66
67int board_init ()
68{
wdenk6069ff22003-02-28 00:49:47 +000069#if defined(CONFIG_VFD)
70 extern int vfd_init_clocks(void);
wdenka6c7ad22002-12-03 21:28:10 +000071#endif
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +090072 struct s3c24x0_clock_power * const clk_power =
73 s3c24x0_get_base_clock_power();
74 struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
wdenkc6097192002-11-03 00:24:07 +000075
76 /* memory and cpu-speed are setup before relocation */
77#ifdef CONFIG_TRAB_50MHZ
78 /* change the clock to be 50 MHz 1:1:1 */
79 /* MDIV:0x5c PDIV:4 SDIV:2 */
C Naumand9abba82010-10-26 23:04:31 +090080 clk_power->mpllcon = 0x5c042;
81 clk_power->clkdivn = 0;
wdenkc6097192002-11-03 00:24:07 +000082#else
83 /* change the clock to be 133 MHz 1:2:4 */
84 /* MDIV:0x7d PDIV:4 SDIV:1 */
C Naumand9abba82010-10-26 23:04:31 +090085 clk_power->mpllcon = 0x7d041;
86 clk_power->clkdivn = 3;
wdenkc6097192002-11-03 00:24:07 +000087#endif
88
89 /* set up the I/O ports */
C Naumand9abba82010-10-26 23:04:31 +090090 gpio->pacon = 0x3ffff;
91 gpio->pbcon = 0xaaaaaaaa;
92 gpio->pbup = 0xffff;
wdenkc6097192002-11-03 00:24:07 +000093 /* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
Wolfgang Denk53677ef2008-05-20 16:00:29 +020094 /* 00, 10, 10, 10, 10, 10, 10 */
C Naumand9abba82010-10-26 23:04:31 +090095 gpio->pfcon = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
wdenkc6097192002-11-03 00:24:07 +000096#ifdef CONFIG_HWFLOW
97 /* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
C Naumand9abba82010-10-26 23:04:31 +090098 gpio->pfup = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
wdenkc6097192002-11-03 00:24:07 +000099#else
100 /* do not pull up RXD0, RXD1, TXD0, TXD1 */
C Naumand9abba82010-10-26 23:04:31 +0900101 gpio->pfup = (1<<0) | (1<<1) | (1<<2) | (1<<3);
wdenkc6097192002-11-03 00:24:07 +0000102#endif
C Naumand9abba82010-10-26 23:04:31 +0900103 gpio->pgcon = 0x0;
104 gpio->pgup = 0x0;
105 gpio->opencr = 0x0;
wdenkc6097192002-11-03 00:24:07 +0000106
wdenk149dded2003-09-10 18:20:28 +0000107 /* suppress flicker of the VFDs */
C Naumand9abba82010-10-26 23:04:31 +0900108 gpio->misccr = 0x40;
109 gpio->pfcon |= (2<<12);
wdenk149dded2003-09-10 18:20:28 +0000110
wdenk731215e2004-10-10 18:41:04 +0000111 gd->bd->bi_arch_number = MACH_TYPE_TRAB;
wdenkc6097192002-11-03 00:24:07 +0000112
113 /* adress of boot parameters */
114 gd->bd->bi_boot_params = 0x0c000100;
115
wdenk1cb8e982003-03-06 21:55:29 +0000116 /* Make sure both buzzers are turned off */
C Naumand9abba82010-10-26 23:04:31 +0900117 gpio->pdcon |= 0x5400;
118 gpio->pddat &= ~0xE0;
wdenk1cb8e982003-03-06 21:55:29 +0000119
wdenka6c7ad22002-12-03 21:28:10 +0000120#ifdef CONFIG_VFD
wdenk6069ff22003-02-28 00:49:47 +0000121 vfd_init_clocks();
wdenka6c7ad22002-12-03 21:28:10 +0000122#endif /* CONFIG_VFD */
wdenkc6097192002-11-03 00:24:07 +0000123
wdenk6069ff22003-02-28 00:49:47 +0000124#ifdef CONFIG_MODEM_SUPPORT
wdenke95b61c2002-11-04 16:02:40 +0000125 udelay_no_timer (KBD_MDELAY);
wdenkc6097192002-11-03 00:24:07 +0000126
127 if (key_pressed()) {
128 disable_putc(); /* modem doesn't understand banner etc */
129 do_mdm_init = 1;
130 }
131#endif /* CONFIG_MODEM_SUPPORT */
132
wdenk6dff5522003-07-15 07:45:49 +0000133#ifdef CONFIG_DRIVER_S3C24X0_I2C
134 /* Configure I/O ports PG5 und PG6 for I2C */
C Naumand9abba82010-10-26 23:04:31 +0900135 gpio->pgcon = (gpio->pgcon & 0x003c00) | 0x003c00;
wdenk6dff5522003-07-15 07:45:49 +0000136#endif /* CONFIG_DRIVER_S3C24X0_I2C */
137
wdenkc6097192002-11-03 00:24:07 +0000138 return 0;
139}
140
141int dram_init (void)
142{
wdenkc6097192002-11-03 00:24:07 +0000143 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
144 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
145 return 0;
146}
147
148/*-----------------------------------------------------------------------
149 * Keyboard Controller
150 */
151
152/* Maximum key number */
153#define KEYBD_KEY_NUM 4
154
155#define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
156
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200157static char *key_match (ulong);
wdenkc6097192002-11-03 00:24:07 +0000158
159int misc_init_r (void)
160{
161 ulong kbd_data = KBD_DATA;
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200162 char *str;
163 char keybd_env[KEYBD_KEY_NUM + 1];
wdenkc6097192002-11-03 00:24:07 +0000164 int i;
165
Wolfgang Denk4bdb53c2006-06-16 15:56:12 +0200166#ifdef CONFIG_VERSION_VARIABLE
167 {
168 /* Set version variable. Please note, that this variable is
169 * also set in main_loop() later in the boot process. The
170 * version variable has to be set this early, because so it
171 * could be used in script files on an usb stick, which
172 * might be called during do_auto_update() */
173 extern char version_string[];
174
175 setenv ("ver", version_string);
176 }
177#endif /* CONFIG_VERSION_VARIABLE */
178
wdenkf54ebdf2003-09-17 15:10:32 +0000179#ifdef CONFIG_AUTO_UPDATE
Wolfgang Denka3d91812006-08-10 01:58:22 +0200180 {
181 extern int do_auto_update(void);
182 /* this has priority over all else */
183 do_auto_update();
184 }
wdenkf54ebdf2003-09-17 15:10:32 +0000185#endif
186
wdenkc6097192002-11-03 00:24:07 +0000187 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
188 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
189 }
190 keybd_env[i] = '\0';
191 debug ("** Setting keybd=\"%s\"\n", keybd_env);
192 setenv ("keybd", keybd_env);
193
194 str = strdup (key_match (kbd_data)); /* decode keys */
195
196#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
197 debug ("** Setting preboot=\"%s\"\n", str);
198 setenv ("preboot", str); /* set or delete definition */
199#endif /* CONFIG_PREBOOT */
200 if (str != NULL) {
201 free (str);
202 }
203
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200204#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +0000205 tsc2000_set_brightness();
206#endif
wdenkc6097192002-11-03 00:24:07 +0000207 return (0);
208}
209
210#ifdef CONFIG_PREBOOT
211
212static uchar kbd_magic_prefix[] = "key_magic";
213static uchar kbd_command_prefix[] = "key_cmd";
214
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200215static int compare_magic (ulong kbd_data, char *str)
wdenkc6097192002-11-03 00:24:07 +0000216{
217 uchar key_mask;
218
219 debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
220 for (; *str; str++)
221 {
222 uchar c = *str - '1';
223
224 if (c >= KEYBD_KEY_NUM) /* bad key number */
225 return -1;
226
227 key_mask = 1 << c;
228
229 if (!(kbd_data & key_mask)) { /* key not pressed */
230 debug ( "compare_magic: "
231 "kbd: %04lx mask: %04lx - key not pressed\n",
232 kbd_data, key_mask );
233 return -1;
234 }
235
236 kbd_data &= ~key_mask;
237 }
238
239 if (kbd_data) { /* key(s) not released */
240 debug ( "compare_magic: "
241 "kbd: %04lx - key(s) not released\n", kbd_data);
242 return -1;
243 }
244
245 return 0;
246}
247
248/*-----------------------------------------------------------------------
249 * Check if pressed key(s) match magic sequence,
250 * and return the command string associated with that key(s).
251 *
252 * If no key press was decoded, NULL is returned.
253 *
254 * Note: the first character of the argument will be overwritten with
255 * the "magic charcter code" of the decoded key(s), or '\0'.
256 *
257 *
258 * Note: the string points to static environment data and must be
259 * saved before you call any function that modifies the environment.
260 */
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200261static char *key_match (ulong kbd_data)
wdenkc6097192002-11-03 00:24:07 +0000262{
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200263 char magic[sizeof (kbd_magic_prefix) + 1];
264 char cmd_name[sizeof (kbd_command_prefix) + 1];
265 char *suffix;
266 char *kbd_magic_keys;
wdenkc6097192002-11-03 00:24:07 +0000267
268 /*
269 * The following string defines the characters that can pe appended
270 * to "key_magic" to form the names of environment variables that
271 * hold "magic" key codes, i. e. such key codes that can cause
272 * pre-boot actions. If the string is empty (""), then only
273 * "key_magic" is checked (old behaviour); the string "125" causes
274 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
275 */
276 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
277 kbd_magic_keys = "";
278
279 debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
280
281 /* loop over all magic keys;
282 * use '\0' suffix in case of empty string
283 */
284 for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
285 {
286 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
287
288 debug ("key_match: magic=\"%s\"\n",
289 getenv(magic) ? getenv(magic) : "<UNDEFINED>");
290
291 if (compare_magic(kbd_data, getenv(magic)) == 0)
292 {
293 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
294 debug ("key_match: cmdname %s=\"%s\"\n",
295 cmd_name,
296 getenv (cmd_name) ?
297 getenv (cmd_name) :
298 "<UNDEFINED>");
299 return (getenv (cmd_name));
300 }
301 }
302 debug ("key_match: no match\n");
303 return (NULL);
304}
305#endif /* CONFIG_PREBOOT */
306
307/* Read Keyboard status */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200308int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
wdenkc6097192002-11-03 00:24:07 +0000309{
310 ulong kbd_data = KBD_DATA;
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200311 char keybd_env[KEYBD_KEY_NUM + 1];
wdenkc6097192002-11-03 00:24:07 +0000312 int i;
313
314 puts ("Keys:");
315 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
316 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
317 printf (" %c", keybd_env[i]);
318 }
319 keybd_env[i] = '\0';
320 putc ('\n');
321 setenv ("keybd", keybd_env);
322 return 0;
323}
324
wdenk0d498392003-07-01 21:06:45 +0000325U_BOOT_CMD(
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200326 kbd, 1, 1, do_kbd,
Peter Tyser2fb26042009-01-27 18:03:12 -0600327 "read keyboard status",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200328 ""
wdenk8bde7f72003-06-27 21:31:46 +0000329);
330
wdenkc6097192002-11-03 00:24:07 +0000331#ifdef CONFIG_MODEM_SUPPORT
332static int key_pressed(void)
333{
334 return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
335}
336#endif /* CONFIG_MODEM_SUPPORT */
wdenk1cb8e982003-03-06 21:55:29 +0000337
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200338#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +0000339
wdenk48b42612003-06-19 23:01:32 +0000340static inline void SET_CS_TOUCH(void)
341{
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +0900342 struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
wdenk48b42612003-06-19 23:01:32 +0000343
C Naumand9abba82010-10-26 23:04:31 +0900344 gpio->pddat &= 0x5FF;
wdenk48b42612003-06-19 23:01:32 +0000345}
346
347static inline void CLR_CS_TOUCH(void)
348{
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +0900349 struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
wdenk48b42612003-06-19 23:01:32 +0000350
C Naumand9abba82010-10-26 23:04:31 +0900351 gpio->pddat |= 0x200;
wdenk48b42612003-06-19 23:01:32 +0000352}
wdenk1cb8e982003-03-06 21:55:29 +0000353
354static void spi_init(void)
355{
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +0900356 struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
357 struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
wdenk1cb8e982003-03-06 21:55:29 +0000358 int i;
359
360 /* Configure I/O ports. */
C Naumand9abba82010-10-26 23:04:31 +0900361 gpio->pdcon = (gpio->pdcon & 0xF3FFFF) | 0x040000;
362 gpio->pgcon = (gpio->pgcon & 0x0F3FFF) | 0x008000;
363 gpio->pgcon = (gpio->pgcon & 0x0CFFFF) | 0x020000;
364 gpio->pgcon = (gpio->pgcon & 0x03FFFF) | 0x080000;
wdenk1cb8e982003-03-06 21:55:29 +0000365
wdenk48b42612003-06-19 23:01:32 +0000366 CLR_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000367
C Naumand9abba82010-10-26 23:04:31 +0900368 spi->ch[0].sppre = 0x1F; /* Baudrate ca. 514kHz */
369 spi->ch[0].sppin = 0x01; /* SPI-MOSI holds Level after last bit */
370 spi->ch[0].spcon = 0x1A; /* Polling, Prescale, Master, CPOL=0, CPHA=1 */
wdenk1cb8e982003-03-06 21:55:29 +0000371
372 /* Dummy byte ensures clock to be low. */
373 for (i = 0; i < 10; i++) {
C Naumand9abba82010-10-26 23:04:31 +0900374 spi->ch[0].sptdat = 0xFF;
wdenk1cb8e982003-03-06 21:55:29 +0000375 }
wdenk82226bf2003-05-20 20:49:01 +0000376 wait_transmit_done();
wdenk1cb8e982003-03-06 21:55:29 +0000377}
378
379static void wait_transmit_done(void)
380{
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +0900381 struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
wdenk48b42612003-06-19 23:01:32 +0000382
C Naumand9abba82010-10-26 23:04:31 +0900383 while (!(spi->ch[0].spsta & 0x01)) /* wait until transfer is done */
384 ;
wdenk1cb8e982003-03-06 21:55:29 +0000385}
386
wdenk82226bf2003-05-20 20:49:01 +0000387static void tsc2000_write(unsigned int page, unsigned int reg,
wdenk1cb8e982003-03-06 21:55:29 +0000388 unsigned int data)
389{
kevin.morfitt@fearnside-systems.co.ukeb0ae7f2009-10-10 13:33:11 +0900390 struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
wdenk1cb8e982003-03-06 21:55:29 +0000391 unsigned int command;
392
wdenk48b42612003-06-19 23:01:32 +0000393 SET_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000394 command = 0x0000;
395 command |= (page << 11);
396 command |= (reg << 5);
397
C Naumand9abba82010-10-26 23:04:31 +0900398 spi->ch[0].sptdat = (command & 0xFF00) >> 8;
wdenk1cb8e982003-03-06 21:55:29 +0000399 wait_transmit_done();
C Naumand9abba82010-10-26 23:04:31 +0900400 spi->ch[0].sptdat = (command & 0x00FF);
wdenk1cb8e982003-03-06 21:55:29 +0000401 wait_transmit_done();
C Naumand9abba82010-10-26 23:04:31 +0900402 spi->ch[0].sptdat = (data & 0xFF00) >> 8;
wdenk1cb8e982003-03-06 21:55:29 +0000403 wait_transmit_done();
C Naumand9abba82010-10-26 23:04:31 +0900404 spi->ch[0].sptdat = (data & 0x00FF);
wdenk1cb8e982003-03-06 21:55:29 +0000405 wait_transmit_done();
406
wdenk48b42612003-06-19 23:01:32 +0000407 CLR_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000408}
409
410static void tsc2000_set_brightness(void)
411{
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200412 char tmp[10];
wdenk1cb8e982003-03-06 21:55:29 +0000413 int i, br;
414
415 spi_init();
416 tsc2000_write(1, 2, 0x0); /* Power up DAC */
417
Wolfgang Denkcdb74972010-07-24 21:55:43 +0200418 i = getenv_f("brightness", tmp, sizeof(tmp));
wdenk1cb8e982003-03-06 21:55:29 +0000419 br = (i > 0)
420 ? (int) simple_strtoul (tmp, NULL, 10)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200421 : CONFIG_SYS_BRIGHTNESS;
wdenk1cb8e982003-03-06 21:55:29 +0000422
423 tsc2000_write(0, 0xb, br & 0xff);
424}
425#endif
Ben Warrenb1c0eaa2009-08-25 13:09:37 -0700426
427#ifdef CONFIG_CMD_NET
428int board_eth_init(bd_t *bis)
429{
430 int rc = 0;
431#ifdef CONFIG_CS8900
432 rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
433#endif
434 return rc;
435}
436#endif