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 /* ------------------------------------------------------------------------- */
33 #ifdef CONFIG_MODEM_SUPPORT
34 static int key_pressed(void);
35 extern void disable_putc(void);
36 extern int do_mdm_init; /* defined in common/main.c */
39 * We need a delay of at least 500 us after turning on the VFD clock
40 * before we can read any useful information for the CPLD controlling
41 * the keyboard switches. Let's play safe and wait 5 ms. The problem
42 * is that timers are not available yet, so we use a manually timed
45 #define KBD_MDELAY 5000
46 static void udelay_no_timer (int usec)
48 DECLARE_GLOBAL_DATA_PTR;
53 for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = 145;
55 #endif /* CONFIG_MODEM_SUPPORT */
58 * Miscellaneous platform dependent initialisations
63 #if defined(CONFIG_MODEM_SUPPORT) && defined(CONFIG_VFD)
66 extern void mem_malloc_init (ulong);
67 extern int drv_vfd_init(void);
69 DECLARE_GLOBAL_DATA_PTR;
71 /* memory and cpu-speed are setup before relocation */
72 #ifdef CONFIG_TRAB_50MHZ
73 /* change the clock to be 50 MHz 1:1:1 */
74 /* MDIV:0x5c PDIV:4 SDIV:2 */
78 /* change the clock to be 133 MHz 1:2:4 */
79 /* MDIV:0x7d PDIV:4 SDIV:1 */
84 /* set up the I/O ports */
88 /* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
89 /* 00, 10, 10, 10, 10, 10, 10 */
90 rPFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
92 /* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
93 rPFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
95 /* do not pull up RXD0, RXD1, TXD0, TXD1 */
96 rPFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
102 /* arch number of SAMSUNG-Board */
103 /* MACH_TYPE_SMDK2400 */
104 /* XXX this isn't really correct, but keep it for now */
105 gd->bd->bi_arch_number = 145;
107 /* adress of boot parameters */
108 gd->bd->bi_boot_params = 0x0c000100;
110 #ifdef CONFIG_MODEM_SUPPORT
113 #define PAGE_SIZE 4096
116 * reserve memory for VFD display (always full pages)
118 /* armboot_real_end is defined in the board-specific linker script */
119 addr = (_armboot_real_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
120 size = vfd_setmem (addr);
122 /* round to the next page boundary */
124 addr = (addr + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
125 mem_malloc_init (addr);
126 /* must do this after the framebuffer is allocated */
128 #endif /* CONFIG_VFD */
130 udelay_no_timer (KBD_MDELAY);
133 disable_putc(); /* modem doesn't understand banner etc */
136 #endif /* CONFIG_MODEM_SUPPORT */
143 DECLARE_GLOBAL_DATA_PTR;
145 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
146 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
150 /*-----------------------------------------------------------------------
151 * Keyboard Controller
154 /* Maximum key number */
155 #define KEYBD_KEY_NUM 4
157 #define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
159 static uchar *key_match (ulong);
161 int misc_init_r (void)
163 ulong kbd_data = KBD_DATA;
164 uchar keybd_env[KEYBD_KEY_NUM + 1];
168 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
169 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
172 debug ("** Setting keybd=\"%s\"\n", keybd_env);
173 setenv ("keybd", keybd_env);
175 str = strdup (key_match (kbd_data)); /* decode keys */
177 #ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
178 debug ("** Setting preboot=\"%s\"\n", str);
179 setenv ("preboot", str); /* set or delete definition */
180 #endif /* CONFIG_PREBOOT */
188 #ifdef CONFIG_PREBOOT
190 static uchar kbd_magic_prefix[] = "key_magic";
191 static uchar kbd_command_prefix[] = "key_cmd";
193 static int compare_magic (ulong kbd_data, uchar *str)
197 debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
200 uchar c = *str - '1';
202 if (c >= KEYBD_KEY_NUM) /* bad key number */
207 if (!(kbd_data & key_mask)) { /* key not pressed */
208 debug ( "compare_magic: "
209 "kbd: %04lx mask: %04lx - key not pressed\n",
210 kbd_data, key_mask );
214 kbd_data &= ~key_mask;
217 if (kbd_data) { /* key(s) not released */
218 debug ( "compare_magic: "
219 "kbd: %04lx - key(s) not released\n", kbd_data);
226 /*-----------------------------------------------------------------------
227 * Check if pressed key(s) match magic sequence,
228 * and return the command string associated with that key(s).
230 * If no key press was decoded, NULL is returned.
232 * Note: the first character of the argument will be overwritten with
233 * the "magic charcter code" of the decoded key(s), or '\0'.
236 * Note: the string points to static environment data and must be
237 * saved before you call any function that modifies the environment.
239 static uchar *key_match (ulong kbd_data)
241 uchar magic[sizeof (kbd_magic_prefix) + 1];
242 uchar cmd_name[sizeof (kbd_command_prefix) + 1];
244 uchar *kbd_magic_keys;
247 * The following string defines the characters that can pe appended
248 * to "key_magic" to form the names of environment variables that
249 * hold "magic" key codes, i. e. such key codes that can cause
250 * pre-boot actions. If the string is empty (""), then only
251 * "key_magic" is checked (old behaviour); the string "125" causes
252 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
254 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
257 debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
259 /* loop over all magic keys;
260 * use '\0' suffix in case of empty string
262 for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
264 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
266 debug ("key_match: magic=\"%s\"\n",
267 getenv(magic) ? getenv(magic) : "<UNDEFINED>");
269 if (compare_magic(kbd_data, getenv(magic)) == 0)
271 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
272 debug ("key_match: cmdname %s=\"%s\"\n",
277 return (getenv (cmd_name));
280 debug ("key_match: no match\n");
283 #endif /* CONFIG_PREBOOT */
285 /* Read Keyboard status */
286 int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
288 ulong kbd_data = KBD_DATA;
289 uchar keybd_env[KEYBD_KEY_NUM + 1];
293 for (i = 0; i < KEYBD_KEY_NUM; ++i) {
294 keybd_env[i] = '0' + ((kbd_data >> i) & 1);
295 printf (" %c", keybd_env[i]);
299 setenv ("keybd", keybd_env);
303 #ifdef CONFIG_MODEM_SUPPORT
304 static int key_pressed(void)
306 return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
308 #endif /* CONFIG_MODEM_SUPPORT */