board/delta/delta.c

   1 /*
   2  * (C) Copyright 2006
   3  * DENX Software Engineering
   4  *
   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 #include <common.h>
  25 #include <i2c.h>
  26 #include <da9030.h>
  27 #include <malloc.h>
  28 #include <command.h>
  29 #include <asm/arch/pxa-regs.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 /* ------------------------------------------------------------------------- */
  34
  35 static void init_DA9030(void);
  36 static void keys_init(void);
  37 static void get_pressed_keys(uchar *s);
  38 static uchar *key_match(uchar *kbd_data);
  39
  40 /*
  41  * Miscelaneous platform dependent initialisations
  42  */
  43
  44 int board_init (void)
  45 {
  46         /* memory and cpu-speed are setup before relocation */
  47         /* so we do _nothing_ here */
  48
  49         /* arch number of Lubbock-Board mk@tbd: fix this! */
  50         gd->bd->bi_arch_number = MACH_TYPE_LUBBOCK;
  51
  52         /* adress of boot parameters */
  53         gd->bd->bi_boot_params = 0xa0000100;
  54
  55         return 0;
  56 }
  57
  58 int board_late_init(void)
  59 {
  60 #ifdef DELTA_CHECK_KEYBD
  61         uchar kbd_data[KEYBD_DATALEN];
  62         char keybd_env[2 * KEYBD_DATALEN + 1];
  63         char *str;
  64         int i;
  65 #endif /* DELTA_CHECK_KEYBD */
  66
  67         setenv("stdout", "serial");
  68         setenv("stderr", "serial");
  69
  70 #ifdef DELTA_CHECK_KEYBD
  71         keys_init();
  72
  73         memset(kbd_data, '\0', KEYBD_DATALEN);
  74
  75         /* check for pressed keys and setup keybd_env */
  76         get_pressed_keys(kbd_data);
  77
  78         for (i = 0; i < KEYBD_DATALEN; ++i) {
  79                 sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
  80         }
  81         setenv ("keybd", keybd_env);
  82
  83         str = strdup ((char *)key_match (kbd_data));    /* decode keys */
  84
  85 # ifdef CONFIG_PREBOOT  /* automatically configure "preboot" command on key match */
  86         setenv ("preboot", str);        /* set or delete definition */
  87 # endif /* CONFIG_PREBOOT */
  88         if (str != NULL) {
  89                 free (str);
  90         }
  91 #endif /* DELTA_CHECK_KEYBD */
  92
  93         init_DA9030();
  94         return 0;
  95 }
  96
  97 /*
  98  * Magic Key Handling, mainly copied from board/lwmon/lwmon.c
  99  */
 100 #ifdef DELTA_CHECK_KEYBD
 101
 102 static uchar kbd_magic_prefix[] = "key_magic";
 103 static uchar kbd_command_prefix[] = "key_cmd";
 104
 105 /*
 106  * Get pressed keys
 107  * s is a buffer of size KEYBD_DATALEN-1
 108  */
 109 static void get_pressed_keys(uchar *s)
 110 {
 111         unsigned long val;
 112         val = GPLR3;
 113
 114         if(val & (1<<31))
 115                 *s++ = KEYBD_KP_DKIN0;
 116         if(val & (1<<18))
 117                 *s++ = KEYBD_KP_DKIN1;
 118         if(val & (1<<29))
 119                 *s++ = KEYBD_KP_DKIN2;
 120         if(val & (1<<22))
 121                 *s++ = KEYBD_KP_DKIN5;
 122 }
 123
 124 static void keys_init()
 125 {
 126         CKENB |= CKENB_7_GPIO;
 127         udelay(100);
 128
 129         /* Configure GPIOs */
 130         GPIO127 = 0xa840;       /* KP_DKIN0 */
 131         GPIO114 = 0xa840;       /* KP_DKIN1 */
 132         GPIO125 = 0xa840;       /* KP_DKIN2 */
 133         GPIO118 = 0xa840;       /* KP_DKIN5 */
 134
 135         /* Configure GPIOs as inputs */
 136         GPDR3 &= ~(1<<31 | 1<<18 | 1<<29 | 1<<22);
 137         GCDR3 = (1<<31 | 1<<18 | 1<<29 | 1<<22);
 138
 139         udelay(100);
 140 }
 141
 142 static int compare_magic (uchar *kbd_data, uchar *str)
 143 {
 144         /* uchar compare[KEYBD_DATALEN-1]; */
 145         uchar compare[KEYBD_DATALEN];
 146         char *nxt;
 147         int i;
 148
 149         /* Don't include modifier byte */
 150         /* memcpy (compare, kbd_data+1, KEYBD_DATALEN-1); */
 151         memcpy (compare, kbd_data, KEYBD_DATALEN);
 152
 153         for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) {
 154                 uchar c;
 155                 int k;
 156
 157                 c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16);
 158
 159                 if (str == (uchar *)nxt) {      /* invalid character */
 160                         break;
 161                 }
 162
 163                 /*
 164                  * Check if this key matches the input.
 165                  * Set matches to zero, so they match only once
 166                  * and we can find duplicates or extra keys
 167                  */
 168                 for (k = 0; k < sizeof(compare); ++k) {
 169                         if (compare[k] == '\0') /* only non-zero entries */
 170                                 continue;
 171                         if (c == compare[k]) {  /* found matching key */
 172                                 compare[k] = '\0';
 173                                 break;
 174                         }
 175                 }
 176                 if (k == sizeof(compare)) {
 177                         return -1;              /* unmatched key */
 178                 }
 179         }
 180
 181         /*
 182          * A full match leaves no keys in the `compare' array,
 183          */
 184         for (i = 0; i < sizeof(compare); ++i) {
 185                 if (compare[i])
 186                 {
 187                         return -1;
 188                 }
 189         }
 190
 191         return 0;
 192 }
 193
 194
 195 static uchar *key_match (uchar *kbd_data)
 196 {
 197         char magic[sizeof (kbd_magic_prefix) + 1];
 198         uchar *suffix;
 199         char *kbd_magic_keys;
 200
 201         /*
 202          * The following string defines the characters that can pe appended
 203          * to "key_magic" to form the names of environment variables that
 204          * hold "magic" key codes, i. e. such key codes that can cause
 205          * pre-boot actions. If the string is empty (""), then only
 206          * "key_magic" is checked (old behaviour); the string "125" causes
 207          * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
 208          */
 209         if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
 210                 kbd_magic_keys = "";
 211
 212         /* loop over all magic keys;
 213          * use '\0' suffix in case of empty string
 214          */
 215         for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) {
 216                 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
 217 #if 0
 218                 printf ("### Check magic \"%s\"\n", magic);
 219 #endif
 220                 if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) {
 221                         char cmd_name[sizeof (kbd_command_prefix) + 1];
 222                         char *cmd;
 223
 224                         sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
 225
 226                         cmd = getenv (cmd_name);
 227 #if 0
 228                         printf ("### Set PREBOOT to $(%s): \"%s\"\n",
 229                                 cmd_name, cmd ? cmd : "<<NULL>>");
 230 #endif
 231                         *kbd_data = *suffix;
 232                         return ((uchar *)cmd);
 233                 }
 234         }
 235 #if 0
 236         printf ("### Delete PREBOOT\n");
 237 #endif
 238         *kbd_data = '\0';
 239         return (NULL);
 240 }
 241
 242 int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 243 {
 244         uchar kbd_data[KEYBD_DATALEN];
 245         char keybd_env[2 * KEYBD_DATALEN + 1];
 246         int i;
 247
 248         /* Read keys */
 249         get_pressed_keys(kbd_data);
 250         puts ("Keys:");
 251         for (i = 0; i < KEYBD_DATALEN; ++i) {
 252                 sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
 253                 printf (" %02x", kbd_data[i]);
 254         }
 255         putc ('\n');
 256         setenv ("keybd", keybd_env);
 257         return 0;
 258 }
 259
 260 U_BOOT_CMD(
 261            kbd, 1,      1,      do_kbd,
 262            "kbd     - read keyboard status\n",
 263            NULL
 264 );
 265
 266 #endif /* DELTA_CHECK_KEYBD */
 267
 268
 269 int dram_init (void)
 270 {
 271         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 272         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 273         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 274         gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
 275         gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
 276         gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
 277         gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
 278         gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
 279
 280         return 0;
 281 }
 282
 283 void i2c_init_board()
 284 {
 285         CKENB |= (CKENB_4_I2C);
 286
 287         /* setup I2C GPIO's */
 288         GPIO32 = 0x801;         /* SCL = Alt. Fkt. 1 */
 289         GPIO33 = 0x801;         /* SDA = Alt. Fkt. 1 */
 290 }
 291
 292 /* initialize the DA9030 Power Controller */
 293 static void init_DA9030()
 294 {
 295         uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
 296
 297         CKENB |= CKENB_7_GPIO;
 298         udelay(100);
 299
 300         /* Rising Edge on EXTON to reset DA9030 */
 301         GPIO17 = 0x8800;        /* configure GPIO17, no pullup, -down */
 302         GPDR0 |= (1<<17);       /* GPIO17 is output */
 303         GSDR0 = (1<<17);
 304         GPCR0 = (1<<17);        /* drive GPIO17 low */
 305         GPSR0 = (1<<17);        /* drive GPIO17 high */
 306
 307 #if CFG_DA9030_EXTON_DELAY
 308         udelay((unsigned long) CFG_DA9030_EXTON_DELAY); /* wait for DA9030 */
 309 #endif
 310         GPCR0 = (1<<17);        /* drive GPIO17 low */
 311
 312         /* reset the watchdog and go active (0xec) */
 313         val = (SYS_CONTROL_A_HWRES_ENABLE |
 314                (0x6<<4) |
 315                SYS_CONTROL_A_WDOG_ACTION |
 316                SYS_CONTROL_A_WATCHDOG);
 317         if(i2c_write(addr, SYS_CONTROL_A, 1, &val, 1)) {
 318                 printf("Error accessing DA9030 via i2c.\n");
 319                 return;
 320         }
 321
 322         val = 0x80;
 323         if(i2c_write(addr, IRQ_MASK_B, 1, &val, 1)) {
 324                 printf("Error accessing DA9030 via i2c.\n");
 325                 return;
 326         }
 327
 328         i2c_reg_write(addr, REG_CONTROL_1_97, 0xfd); /* disable LDO1, enable LDO6 */
 329         i2c_reg_write(addr, LDO2_3, 0xd1);      /* LDO2 =1,9V, LDO3=3,1V */
 330         i2c_reg_write(addr, LDO4_5, 0xcc);      /* LDO2 =1,9V, LDO3=3,1V */
 331         i2c_reg_write(addr, LDO6_SIMCP, 0x3e);  /* LDO6=3,2V, SIMCP = 5V support */
 332         i2c_reg_write(addr, LDO7_8, 0xc9);      /* LDO7=2,7V, LDO8=3,0V */
 333         i2c_reg_write(addr, LDO9_12, 0xec);     /* LDO9=3,0V, LDO12=3,2V */
 334         i2c_reg_write(addr, BUCK, 0x0c);        /* Buck=1.2V */
 335         i2c_reg_write(addr, REG_CONTROL_2_98, 0x7f); /* All LDO'S on 8,9,10,11,12,14 */
 336         i2c_reg_write(addr, LDO_10_11, 0xcc);   /* LDO10=3.0V  LDO11=3.0V */
 337         i2c_reg_write(addr, LDO_15, 0xae);      /* LDO15=1.8V, dislock first 3bit */
 338         i2c_reg_write(addr, LDO_14_16, 0x05);   /* LDO14=2.8V, LDO16=NB */
 339         i2c_reg_write(addr, LDO_18_19, 0x9c);   /* LDO18=3.0V, LDO19=2.7V */
 340         i2c_reg_write(addr, LDO_17_SIMCP0, 0x2c); /* LDO17=3.0V, SIMCP=3V support */
 341         i2c_reg_write(addr, BUCK2_DVC1, 0x9a);  /* Buck2=1.5V plus Update support of 520 MHz */
 342         i2c_reg_write(addr, REG_CONTROL_2_18, 0x43); /* Ball on */
 343         i2c_reg_write(addr, MISC_CONTROLB, 0x08); /* session valid enable */
 344         i2c_reg_write(addr, USBPUMP, 0xc1);     /* start pump, ignore HW signals */
 345
 346         val = i2c_reg_read(addr, STATUS);
 347         if(val & STATUS_CHDET)
 348                 printf("Charger detected, turning on LED.\n");
 349         else {
 350                 printf("No charger detetected.\n");
 351                 /* undervoltage? print error and power down */
 352         }
 353 }
 354
 355
 356 #if 0
 357 /* reset the DA9030 watchdog */
 358 void hw_watchdog_reset(void)
 359 {
 360         uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
 361         val = i2c_reg_read(addr, SYS_CONTROL_A);
 362         val |= SYS_CONTROL_A_WATCHDOG;
 363         i2c_reg_write(addr, SYS_CONTROL_A, val);
 364 }
 365 #endif