3 * Gary Jennejohn, DENX Software Engineering, <gj@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,
31 DECLARE_GLOBAL_DATA_PTR;
33 #ifdef CONFIG_SYS_BRIGHTNESS
34 static void spi_init(void);
35 static void wait_transmit_done(void);
36 static void tsc2000_write(unsigned int page, unsigned int reg,
38 static void tsc2000_set_brightness(void);
40 #ifdef CONFIG_MODEM_SUPPORT
41 static int key_pressed(void);
42 extern void disable_putc(void);
43 extern int do_mdm_init; /* defined in common/main.c */
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
52 #define KBD_MDELAY 5000
53 static void udelay_no_timer (int usec)
58 for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = MACH_TYPE_TRAB;
60 #endif /* CONFIG_MODEM_SUPPORT */
63 * Miscellaneous platform dependent initialisations
68 #if defined(CONFIG_VFD)
69 extern int vfd_init_clocks(void);
71 S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
72 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
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 */
78 clk_power->MPLLCON = 0x5c042;
79 clk_power->CLKDIVN = 0;
81 /* change the clock to be 133 MHz 1:2:4 */
82 /* MDIV:0x7d PDIV:4 SDIV:1 */
83 clk_power->MPLLCON = 0x7d041;
84 clk_power->CLKDIVN = 3;
87 /* set up the I/O ports */
88 gpio->PACON = 0x3ffff;
89 gpio->PBCON = 0xaaaaaaaa;
91 /* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
92 /* 00, 10, 10, 10, 10, 10, 10 */
93 gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
95 /* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
96 gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
98 /* do not pull up RXD0, RXD1, TXD0, TXD1 */
99 gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
105 /* suppress flicker of the VFDs */
107 gpio->PFCON |= (2<<12);
109 gd->bd->bi_arch_number = MACH_TYPE_TRAB;
111 /* adress of boot parameters */
112 gd->bd->bi_boot_params = 0x0c000100;
114 /* Make sure both buzzers are turned off */
115 gpio->PDCON |= 0x5400;
116 gpio->PDDAT &= ~0xE0;
120 #endif /* CONFIG_VFD */
122 #ifdef CONFIG_MODEM_SUPPORT
123 udelay_no_timer (KBD_MDELAY);
126 disable_putc(); /* modem doesn't understand banner etc */
129 #endif /* CONFIG_MODEM_SUPPORT */
131 #ifdef CONFIG_DRIVER_S3C24X0_I2C
132 /* Configure I/O ports PG5 und PG6 for I2C */
133 gpio->PGCON = (gpio->PGCON & 0x003c00) | 0x003c00;
134 #endif /* CONFIG_DRIVER_S3C24X0_I2C */
141 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
142 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
146 /*-----------------------------------------------------------------------
147 * Keyboard Controller
150 /* Maximum key number */
151 #define KEYBD_KEY_NUM 4
153 #define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
155 static char *key_match (ulong);
157 int misc_init_r (void)
159 ulong kbd_data = KBD_DATA;
161 char keybd_env[KEYBD_KEY_NUM + 1];
164 #ifdef CONFIG_VERSION_VARIABLE
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[];
173 setenv ("ver", version_string);
175 #endif /* CONFIG_VERSION_VARIABLE */
177 #ifdef CONFIG_AUTO_UPDATE
179 extern int do_auto_update(void);
180 /* this has priority over all else */
185 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
186 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
189 debug ("** Setting keybd=\"%s\"\n", keybd_env);
190 setenv ("keybd", keybd_env);
192 str = strdup (key_match (kbd_data)); /* decode keys */
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 */
202 #ifdef CONFIG_SYS_BRIGHTNESS
203 tsc2000_set_brightness();
208 #ifdef CONFIG_PREBOOT
210 static uchar kbd_magic_prefix[] = "key_magic";
211 static uchar kbd_command_prefix[] = "key_cmd";
213 static int compare_magic (ulong kbd_data, char *str)
217 debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
220 uchar c = *str - '1';
222 if (c >= KEYBD_KEY_NUM) /* bad key number */
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 );
234 kbd_data &= ~key_mask;
237 if (kbd_data) { /* key(s) not released */
238 debug ( "compare_magic: "
239 "kbd: %04lx - key(s) not released\n", kbd_data);
246 /*-----------------------------------------------------------------------
247 * Check if pressed key(s) match magic sequence,
248 * and return the command string associated with that key(s).
250 * If no key press was decoded, NULL is returned.
252 * Note: the first character of the argument will be overwritten with
253 * the "magic charcter code" of the decoded key(s), or '\0'.
256 * Note: the string points to static environment data and must be
257 * saved before you call any function that modifies the environment.
259 static char *key_match (ulong kbd_data)
261 char magic[sizeof (kbd_magic_prefix) + 1];
262 char cmd_name[sizeof (kbd_command_prefix) + 1];
264 char *kbd_magic_keys;
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.
274 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
277 debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
279 /* loop over all magic keys;
280 * use '\0' suffix in case of empty string
282 for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
284 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
286 debug ("key_match: magic=\"%s\"\n",
287 getenv(magic) ? getenv(magic) : "<UNDEFINED>");
289 if (compare_magic(kbd_data, getenv(magic)) == 0)
291 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
292 debug ("key_match: cmdname %s=\"%s\"\n",
297 return (getenv (cmd_name));
300 debug ("key_match: no match\n");
303 #endif /* CONFIG_PREBOOT */
305 /* Read Keyboard status */
306 int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
308 ulong kbd_data = KBD_DATA;
309 char keybd_env[KEYBD_KEY_NUM + 1];
313 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
314 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
315 printf (" %c", keybd_env[i]);
319 setenv ("keybd", keybd_env);
325 "read keyboard status",
329 #ifdef CONFIG_MODEM_SUPPORT
330 static int key_pressed(void)
332 return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
334 #endif /* CONFIG_MODEM_SUPPORT */
336 #ifdef CONFIG_SYS_BRIGHTNESS
338 static inline void SET_CS_TOUCH(void)
340 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
342 gpio->PDDAT &= 0x5FF;
345 static inline void CLR_CS_TOUCH(void)
347 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
349 gpio->PDDAT |= 0x200;
352 static void spi_init(void)
354 S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
355 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
358 /* Configure I/O ports. */
359 gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
360 gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
361 gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
362 gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;
366 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 */
370 /* Dummy byte ensures clock to be low. */
371 for (i = 0; i < 10; i++) {
372 spi->ch[0].SPTDAT = 0xFF;
374 wait_transmit_done();
377 static void wait_transmit_done(void)
379 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
381 while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
384 static void tsc2000_write(unsigned int page, unsigned int reg,
387 S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
388 unsigned int command;
392 command |= (page << 11);
393 command |= (reg << 5);
395 spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
396 wait_transmit_done();
397 spi->ch[0].SPTDAT = (command & 0x00FF);
398 wait_transmit_done();
399 spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
400 wait_transmit_done();
401 spi->ch[0].SPTDAT = (data & 0x00FF);
402 wait_transmit_done();
407 static void tsc2000_set_brightness(void)
413 tsc2000_write(1, 2, 0x0); /* Power up DAC */
415 i = getenv_r("brightness", tmp, sizeof(tmp));
417 ? (int) simple_strtoul (tmp, NULL, 10)
418 : CONFIG_SYS_BRIGHTNESS;
420 tsc2000_write(0, 0xb, br & 0xff);