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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>
wdenkc6097192002-11-03 00:24:07 +000027#include <malloc.h>
28#include <s3c2400.h>
wdenk8bde7f72003-06-27 21:31:46 +000029#include <command.h>
wdenkc6097192002-11-03 00:24:07 +000030
Wolfgang Denkd87080b2006-03-31 18:32:53 +020031DECLARE_GLOBAL_DATA_PTR;
wdenkc6097192002-11-03 00:24:07 +000032
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020033#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +000034static void spi_init(void);
35static void wait_transmit_done(void);
wdenk82226bf2003-05-20 20:49:01 +000036static void tsc2000_write(unsigned int page, unsigned int reg,
wdenk1cb8e982003-03-06 21:55:29 +000037 unsigned int data);
38static void tsc2000_set_brightness(void);
39#endif
wdenkc6097192002-11-03 00:24:07 +000040#ifdef CONFIG_MODEM_SUPPORT
41static int key_pressed(void);
42extern void disable_putc(void);
43extern int do_mdm_init; /* defined in common/main.c */
44
45/*
46 * We need a delay of at least 500 us after turning on the VFD clock
47 * before we can read any useful information for the CPLD controlling
48 * the keyboard switches. Let's play safe and wait 5 ms. The problem
49 * is that timers are not available yet, so we use a manually timed
50 * loop.
51 */
wdenke95b61c2002-11-04 16:02:40 +000052#define KBD_MDELAY 5000
53static void udelay_no_timer (int usec)
wdenkc6097192002-11-03 00:24:07 +000054{
wdenkc6097192002-11-03 00:24:07 +000055 int i;
wdenke95b61c2002-11-04 16:02:40 +000056 int delay = usec * 3;
wdenkc6097192002-11-03 00:24:07 +000057
wdenk731215e2004-10-10 18:41:04 +000058 for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = MACH_TYPE_TRAB;
wdenkc6097192002-11-03 00:24:07 +000059}
60#endif /* CONFIG_MODEM_SUPPORT */
61
62/*
63 * Miscellaneous platform dependent initialisations
64 */
65
66int board_init ()
67{
wdenk6069ff22003-02-28 00:49:47 +000068#if defined(CONFIG_VFD)
69 extern int vfd_init_clocks(void);
wdenka6c7ad22002-12-03 21:28:10 +000070#endif
wdenk48b42612003-06-19 23:01:32 +000071 S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
72 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
wdenkc6097192002-11-03 00:24:07 +000073
74 /* memory and cpu-speed are setup before relocation */
75#ifdef CONFIG_TRAB_50MHZ
76 /* change the clock to be 50 MHz 1:1:1 */
77 /* MDIV:0x5c PDIV:4 SDIV:2 */
wdenk48b42612003-06-19 23:01:32 +000078 clk_power->MPLLCON = 0x5c042;
79 clk_power->CLKDIVN = 0;
wdenkc6097192002-11-03 00:24:07 +000080#else
81 /* change the clock to be 133 MHz 1:2:4 */
82 /* MDIV:0x7d PDIV:4 SDIV:1 */
wdenk48b42612003-06-19 23:01:32 +000083 clk_power->MPLLCON = 0x7d041;
84 clk_power->CLKDIVN = 3;
wdenkc6097192002-11-03 00:24:07 +000085#endif
86
87 /* set up the I/O ports */
wdenk48b42612003-06-19 23:01:32 +000088 gpio->PACON = 0x3ffff;
89 gpio->PBCON = 0xaaaaaaaa;
90 gpio->PBUP = 0xffff;
wdenkc6097192002-11-03 00:24:07 +000091 /* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
Wolfgang Denk53677ef2008-05-20 16:00:29 +020092 /* 00, 10, 10, 10, 10, 10, 10 */
wdenk48b42612003-06-19 23:01:32 +000093 gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
wdenkc6097192002-11-03 00:24:07 +000094#ifdef CONFIG_HWFLOW
95 /* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
wdenk48b42612003-06-19 23:01:32 +000096 gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
wdenkc6097192002-11-03 00:24:07 +000097#else
98 /* do not pull up RXD0, RXD1, TXD0, TXD1 */
wdenk48b42612003-06-19 23:01:32 +000099 gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
wdenkc6097192002-11-03 00:24:07 +0000100#endif
wdenk48b42612003-06-19 23:01:32 +0000101 gpio->PGCON = 0x0;
102 gpio->PGUP = 0x0;
103 gpio->OPENCR= 0x0;
wdenkc6097192002-11-03 00:24:07 +0000104
wdenk149dded2003-09-10 18:20:28 +0000105 /* suppress flicker of the VFDs */
106 gpio->MISCCR = 0x40;
107 gpio->PFCON |= (2<<12);
108
wdenk731215e2004-10-10 18:41:04 +0000109 gd->bd->bi_arch_number = MACH_TYPE_TRAB;
wdenkc6097192002-11-03 00:24:07 +0000110
111 /* adress of boot parameters */
112 gd->bd->bi_boot_params = 0x0c000100;
113
wdenk1cb8e982003-03-06 21:55:29 +0000114 /* Make sure both buzzers are turned off */
wdenk48b42612003-06-19 23:01:32 +0000115 gpio->PDCON |= 0x5400;
116 gpio->PDDAT &= ~0xE0;
wdenk1cb8e982003-03-06 21:55:29 +0000117
wdenka6c7ad22002-12-03 21:28:10 +0000118#ifdef CONFIG_VFD
wdenk6069ff22003-02-28 00:49:47 +0000119 vfd_init_clocks();
wdenka6c7ad22002-12-03 21:28:10 +0000120#endif /* CONFIG_VFD */
wdenkc6097192002-11-03 00:24:07 +0000121
wdenk6069ff22003-02-28 00:49:47 +0000122#ifdef CONFIG_MODEM_SUPPORT
wdenke95b61c2002-11-04 16:02:40 +0000123 udelay_no_timer (KBD_MDELAY);
wdenkc6097192002-11-03 00:24:07 +0000124
125 if (key_pressed()) {
126 disable_putc(); /* modem doesn't understand banner etc */
127 do_mdm_init = 1;
128 }
129#endif /* CONFIG_MODEM_SUPPORT */
130
wdenk6dff5522003-07-15 07:45:49 +0000131#ifdef CONFIG_DRIVER_S3C24X0_I2C
132 /* Configure I/O ports PG5 und PG6 for I2C */
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200133 gpio->PGCON = (gpio->PGCON & 0x003c00) | 0x003c00;
wdenk6dff5522003-07-15 07:45:49 +0000134#endif /* CONFIG_DRIVER_S3C24X0_I2C */
135
wdenkc6097192002-11-03 00:24:07 +0000136 return 0;
137}
138
139int dram_init (void)
140{
wdenkc6097192002-11-03 00:24:07 +0000141 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
142 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
143 return 0;
144}
145
146/*-----------------------------------------------------------------------
147 * Keyboard Controller
148 */
149
150/* Maximum key number */
151#define KEYBD_KEY_NUM 4
152
153#define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
154
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200155static char *key_match (ulong);
wdenkc6097192002-11-03 00:24:07 +0000156
157int misc_init_r (void)
158{
159 ulong kbd_data = KBD_DATA;
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200160 char *str;
161 char keybd_env[KEYBD_KEY_NUM + 1];
wdenkc6097192002-11-03 00:24:07 +0000162 int i;
163
Wolfgang Denk4bdb53c2006-06-16 15:56:12 +0200164#ifdef CONFIG_VERSION_VARIABLE
165 {
166 /* Set version variable. Please note, that this variable is
167 * also set in main_loop() later in the boot process. The
168 * version variable has to be set this early, because so it
169 * could be used in script files on an usb stick, which
170 * might be called during do_auto_update() */
171 extern char version_string[];
172
173 setenv ("ver", version_string);
174 }
175#endif /* CONFIG_VERSION_VARIABLE */
176
wdenkf54ebdf2003-09-17 15:10:32 +0000177#ifdef CONFIG_AUTO_UPDATE
Wolfgang Denka3d91812006-08-10 01:58:22 +0200178 {
179 extern int do_auto_update(void);
180 /* this has priority over all else */
181 do_auto_update();
182 }
wdenkf54ebdf2003-09-17 15:10:32 +0000183#endif
184
wdenkc6097192002-11-03 00:24:07 +0000185 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
186 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
187 }
188 keybd_env[i] = '\0';
189 debug ("** Setting keybd=\"%s\"\n", keybd_env);
190 setenv ("keybd", keybd_env);
191
192 str = strdup (key_match (kbd_data)); /* decode keys */
193
194#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
195 debug ("** Setting preboot=\"%s\"\n", str);
196 setenv ("preboot", str); /* set or delete definition */
197#endif /* CONFIG_PREBOOT */
198 if (str != NULL) {
199 free (str);
200 }
201
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200202#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +0000203 tsc2000_set_brightness();
204#endif
wdenkc6097192002-11-03 00:24:07 +0000205 return (0);
206}
207
208#ifdef CONFIG_PREBOOT
209
210static uchar kbd_magic_prefix[] = "key_magic";
211static uchar kbd_command_prefix[] = "key_cmd";
212
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200213static int compare_magic (ulong kbd_data, char *str)
wdenkc6097192002-11-03 00:24:07 +0000214{
215 uchar key_mask;
216
217 debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
218 for (; *str; str++)
219 {
220 uchar c = *str - '1';
221
222 if (c >= KEYBD_KEY_NUM) /* bad key number */
223 return -1;
224
225 key_mask = 1 << c;
226
227 if (!(kbd_data & key_mask)) { /* key not pressed */
228 debug ( "compare_magic: "
229 "kbd: %04lx mask: %04lx - key not pressed\n",
230 kbd_data, key_mask );
231 return -1;
232 }
233
234 kbd_data &= ~key_mask;
235 }
236
237 if (kbd_data) { /* key(s) not released */
238 debug ( "compare_magic: "
239 "kbd: %04lx - key(s) not released\n", kbd_data);
240 return -1;
241 }
242
243 return 0;
244}
245
246/*-----------------------------------------------------------------------
247 * Check if pressed key(s) match magic sequence,
248 * and return the command string associated with that key(s).
249 *
250 * If no key press was decoded, NULL is returned.
251 *
252 * Note: the first character of the argument will be overwritten with
253 * the "magic charcter code" of the decoded key(s), or '\0'.
254 *
255 *
256 * Note: the string points to static environment data and must be
257 * saved before you call any function that modifies the environment.
258 */
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200259static char *key_match (ulong kbd_data)
wdenkc6097192002-11-03 00:24:07 +0000260{
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200261 char magic[sizeof (kbd_magic_prefix) + 1];
262 char cmd_name[sizeof (kbd_command_prefix) + 1];
263 char *suffix;
264 char *kbd_magic_keys;
wdenkc6097192002-11-03 00:24:07 +0000265
266 /*
267 * The following string defines the characters that can pe appended
268 * to "key_magic" to form the names of environment variables that
269 * hold "magic" key codes, i. e. such key codes that can cause
270 * pre-boot actions. If the string is empty (""), then only
271 * "key_magic" is checked (old behaviour); the string "125" causes
272 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
273 */
274 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
275 kbd_magic_keys = "";
276
277 debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
278
279 /* loop over all magic keys;
280 * use '\0' suffix in case of empty string
281 */
282 for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
283 {
284 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
285
286 debug ("key_match: magic=\"%s\"\n",
287 getenv(magic) ? getenv(magic) : "<UNDEFINED>");
288
289 if (compare_magic(kbd_data, getenv(magic)) == 0)
290 {
291 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
292 debug ("key_match: cmdname %s=\"%s\"\n",
293 cmd_name,
294 getenv (cmd_name) ?
295 getenv (cmd_name) :
296 "<UNDEFINED>");
297 return (getenv (cmd_name));
298 }
299 }
300 debug ("key_match: no match\n");
301 return (NULL);
302}
303#endif /* CONFIG_PREBOOT */
304
305/* Read Keyboard status */
306int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
307{
308 ulong kbd_data = KBD_DATA;
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200309 char keybd_env[KEYBD_KEY_NUM + 1];
wdenkc6097192002-11-03 00:24:07 +0000310 int i;
311
312 puts ("Keys:");
313 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
314 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
315 printf (" %c", keybd_env[i]);
316 }
317 keybd_env[i] = '\0';
318 putc ('\n');
319 setenv ("keybd", keybd_env);
320 return 0;
321}
322
wdenk0d498392003-07-01 21:06:45 +0000323U_BOOT_CMD(
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200324 kbd, 1, 1, do_kbd,
Peter Tyser2fb26042009-01-27 18:03:12 -0600325 "read keyboard status",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200326 ""
wdenk8bde7f72003-06-27 21:31:46 +0000327);
328
wdenkc6097192002-11-03 00:24:07 +0000329#ifdef CONFIG_MODEM_SUPPORT
330static int key_pressed(void)
331{
332 return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
333}
334#endif /* CONFIG_MODEM_SUPPORT */
wdenk1cb8e982003-03-06 21:55:29 +0000335
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200336#ifdef CONFIG_SYS_BRIGHTNESS
wdenk1cb8e982003-03-06 21:55:29 +0000337
wdenk48b42612003-06-19 23:01:32 +0000338static inline void SET_CS_TOUCH(void)
339{
340 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
341
342 gpio->PDDAT &= 0x5FF;
343}
344
345static inline void CLR_CS_TOUCH(void)
346{
347 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
348
349 gpio->PDDAT |= 0x200;
350}
wdenk1cb8e982003-03-06 21:55:29 +0000351
352static void spi_init(void)
353{
wdenk48b42612003-06-19 23:01:32 +0000354 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
355 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
wdenk1cb8e982003-03-06 21:55:29 +0000356 int i;
357
358 /* Configure I/O ports. */
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200359 gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
wdenk48b42612003-06-19 23:01:32 +0000360 gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
361 gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
362 gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;
wdenk1cb8e982003-03-06 21:55:29 +0000363
wdenk48b42612003-06-19 23:01:32 +0000364 CLR_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000365
wdenk48b42612003-06-19 23:01:32 +0000366 spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
367 spi->ch[0].SPPIN = 0x01; /* SPI-MOSI holds Level after last bit */
368 spi->ch[0].SPCON = 0x1A; /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */
wdenk1cb8e982003-03-06 21:55:29 +0000369
370 /* Dummy byte ensures clock to be low. */
371 for (i = 0; i < 10; i++) {
wdenk48b42612003-06-19 23:01:32 +0000372 spi->ch[0].SPTDAT = 0xFF;
wdenk1cb8e982003-03-06 21:55:29 +0000373 }
wdenk82226bf2003-05-20 20:49:01 +0000374 wait_transmit_done();
wdenk1cb8e982003-03-06 21:55:29 +0000375}
376
377static void wait_transmit_done(void)
378{
wdenk48b42612003-06-19 23:01:32 +0000379 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
380
381 while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
wdenk1cb8e982003-03-06 21:55:29 +0000382}
383
wdenk82226bf2003-05-20 20:49:01 +0000384static void tsc2000_write(unsigned int page, unsigned int reg,
wdenk1cb8e982003-03-06 21:55:29 +0000385 unsigned int data)
386{
wdenk48b42612003-06-19 23:01:32 +0000387 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
wdenk1cb8e982003-03-06 21:55:29 +0000388 unsigned int command;
389
wdenk48b42612003-06-19 23:01:32 +0000390 SET_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000391 command = 0x0000;
392 command |= (page << 11);
393 command |= (reg << 5);
394
wdenk48b42612003-06-19 23:01:32 +0000395 spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
wdenk1cb8e982003-03-06 21:55:29 +0000396 wait_transmit_done();
wdenk48b42612003-06-19 23:01:32 +0000397 spi->ch[0].SPTDAT = (command & 0x00FF);
wdenk1cb8e982003-03-06 21:55:29 +0000398 wait_transmit_done();
wdenk48b42612003-06-19 23:01:32 +0000399 spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
wdenk1cb8e982003-03-06 21:55:29 +0000400 wait_transmit_done();
wdenk48b42612003-06-19 23:01:32 +0000401 spi->ch[0].SPTDAT = (data & 0x00FF);
wdenk1cb8e982003-03-06 21:55:29 +0000402 wait_transmit_done();
403
wdenk48b42612003-06-19 23:01:32 +0000404 CLR_CS_TOUCH();
wdenk1cb8e982003-03-06 21:55:29 +0000405}
406
407static void tsc2000_set_brightness(void)
408{
Wolfgang Denka63c31c2006-06-26 10:54:52 +0200409 char tmp[10];
wdenk1cb8e982003-03-06 21:55:29 +0000410 int i, br;
411
412 spi_init();
413 tsc2000_write(1, 2, 0x0); /* Power up DAC */
414
415 i = getenv_r("brightness", tmp, sizeof(tmp));
416 br = (i > 0)
417 ? (int) simple_strtoul (tmp, NULL, 10)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200418 : CONFIG_SYS_BRIGHTNESS;
wdenk1cb8e982003-03-06 21:55:29 +0000419
420 tsc2000_write(0, 0xb, br & 0xff);
421}
422#endif