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Diffstat (limited to 'board/delta/delta.c')
| -rw-r--r-- | board/delta/delta.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/board/delta/delta.c b/board/delta/delta.c new file mode 100644 index 0000000..b127ac8 --- /dev/null +++ b/board/delta/delta.c @@ -0,0 +1,364 @@ +/* + * (C) Copyright 2002 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <i2c.h> +#include <da9030.h> +#include <malloc.h> +#include <command.h> +#include <asm/arch/pxa-regs.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* ------------------------------------------------------------------------- */ + +static void init_DA9030(void); +static void keys_init(void); +static void get_pressed_keys(uchar *s); +static uchar *key_match(uchar *kbd_data); + +/* + * Miscelaneous platform dependent initialisations + */ + +int board_init (void) +{ + /* memory and cpu-speed are setup before relocation */ + /* so we do _nothing_ here */ + + /* arch number of Lubbock-Board mk@tbd: fix this! */ + gd->bd->bi_arch_number = MACH_TYPE_LUBBOCK; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0xa0000100; + + return 0; +} + +int board_late_init(void) +{ +#ifdef DELTA_CHECK_KEYBD + uchar kbd_data[KEYBD_DATALEN]; + char keybd_env[2 * KEYBD_DATALEN + 1]; + char *str; + int i; +#endif /* DELTA_CHECK_KEYBD */ + + setenv("stdout", "serial"); + setenv("stderr", "serial"); + +#ifdef DELTA_CHECK_KEYBD + keys_init(); + + memset(kbd_data, '\0', KEYBD_DATALEN); + + /* check for pressed keys and setup keybd_env */ + get_pressed_keys(kbd_data); + + for (i = 0; i < KEYBD_DATALEN; ++i) { + sprintf (keybd_env + i + i, "%02X", kbd_data[i]); + } + setenv ("keybd", keybd_env); + + str = strdup ((char *)key_match (kbd_data)); /* decode keys */ + +# ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */ + setenv ("preboot", str); /* set or delete definition */ +# endif /* CONFIG_PREBOOT */ + if (str != NULL) { + free (str); + } +#endif /* DELTA_CHECK_KEYBD */ + + init_DA9030(); + return 0; +} + + +/* + * Magic Key Handling, mainly copied from board/lwmon/lwmon.c + */ +#ifdef DELTA_CHECK_KEYBD + +static uchar kbd_magic_prefix[] = "key_magic"; +static uchar kbd_command_prefix[] = "key_cmd"; + +/* + * Get pressed keys + * s is a buffer of size KEYBD_DATALEN-1 + */ +static void get_pressed_keys(uchar *s) +{ + unsigned long val; + val = GPLR3; + + if(val & (1<<31)) + *s++ = KEYBD_KP_DKIN0; + if(val & (1<<18)) + *s++ = KEYBD_KP_DKIN1; + if(val & (1<<29)) + *s++ = KEYBD_KP_DKIN2; + if(val & (1<<22)) + *s++ = KEYBD_KP_DKIN5; +} + +static void keys_init() +{ + CKENB |= CKENB_7_GPIO; + udelay(100); + + /* Configure GPIOs */ + GPIO127 = 0xa840; /* KP_DKIN0 */ + GPIO114 = 0xa840; /* KP_DKIN1 */ + GPIO125 = 0xa840; /* KP_DKIN2 */ + GPIO118 = 0xa840; /* KP_DKIN5 */ + + /* Configure GPIOs as inputs */ + GPDR3 &= ~(1<<31 | 1<<18 | 1<<29 | 1<<22); + GCDR3 = (1<<31 | 1<<18 | 1<<29 | 1<<22); + + udelay(100); +} + +static int compare_magic (uchar *kbd_data, uchar *str) +{ + /* uchar compare[KEYBD_DATALEN-1]; */ + uchar compare[KEYBD_DATALEN]; + char *nxt; + int i; + + /* Don't include modifier byte */ + /* memcpy (compare, kbd_data+1, KEYBD_DATALEN-1); */ + memcpy (compare, kbd_data, KEYBD_DATALEN); + + for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) { + uchar c; + int k; + + c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16); + + if (str == (uchar *)nxt) { /* invalid character */ + break; + } + + /* + * Check if this key matches the input. + * Set matches to zero, so they match only once + * and we can find duplicates or extra keys + */ + for (k = 0; k < sizeof(compare); ++k) { + if (compare[k] == '\0') /* only non-zero entries */ + continue; + if (c == compare[k]) { /* found matching key */ + compare[k] = '\0'; + break; + } + } + if (k == sizeof(compare)) { + return -1; /* unmatched key */ + } + } + + /* + * A full match leaves no keys in the `compare' array, + */ + for (i = 0; i < sizeof(compare); ++i) { + if (compare[i]) + { + return -1; + } + } + + return 0; +} + + +static uchar *key_match (uchar *kbd_data) +{ + char magic[sizeof (kbd_magic_prefix) + 1]; + uchar *suffix; + char *kbd_magic_keys; + + /* + * The following string defines the characters that can pe appended + * to "key_magic" to form the names of environment variables that + * hold "magic" key codes, i. e. such key codes that can cause + * pre-boot actions. If the string is empty (""), then only + * "key_magic" is checked (old behaviour); the string "125" causes + * checks for "key_magic1", "key_magic2" and "key_magic5", etc. + */ + if ((kbd_magic_keys = getenv ("magic_keys")) == NULL) + kbd_magic_keys = ""; + + /* loop over all magic keys; + * use '\0' suffix in case of empty string + */ + for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) { + sprintf (magic, "%s%c", kbd_magic_prefix, *suffix); +#if 0 + printf ("### Check magic \"%s\"\n", magic); +#endif + if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) { + char cmd_name[sizeof (kbd_command_prefix) + 1]; + char *cmd; + + sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix); + + cmd = getenv (cmd_name); +#if 0 + printf ("### Set PREBOOT to $(%s): \"%s\"\n", + cmd_name, cmd ? cmd : "<<NULL>>"); +#endif + *kbd_data = *suffix; + return ((uchar *)cmd); + } + } +#if 0 + printf ("### Delete PREBOOT\n"); +#endif + *kbd_data = '\0'; + return (NULL); +} + +int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + uchar kbd_data[KEYBD_DATALEN]; + char keybd_env[2 * KEYBD_DATALEN + 1]; + int i; + + /* Read keys */ + get_pressed_keys(kbd_data); + puts ("Keys:"); + for (i = 0; i < KEYBD_DATALEN; ++i) { + sprintf (keybd_env + i + i, "%02X", kbd_data[i]); + printf (" %02x", kbd_data[i]); + } + putc ('\n'); + setenv ("keybd", keybd_env); + return 0; +} + +U_BOOT_CMD( + kbd, 1, 1, do_kbd, + "kbd - read keyboard status\n", + NULL +); + +#endif /* DELTA_CHECK_KEYBD */ + + +int dram_init (void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE; + gd->bd->bi_dram[2].start = PHYS_SDRAM_3; + gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE; + gd->bd->bi_dram[3].start = PHYS_SDRAM_4; + gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE; + + return 0; +} + +void i2c_init_board() +{ + CKENB |= (CKENB_4_I2C); + + /* setup I2C GPIO's */ + GPIO32 = 0x801; /* SCL = Alt. Fkt. 1 */ + GPIO33 = 0x801; /* SDA = Alt. Fkt. 1 */ +} + +/* initialize the DA9030 Power Controller */ +static void init_DA9030() +{ + uchar addr = (uchar) DA9030_I2C_ADDR, val = 0; + + CKENB |= CKENB_7_GPIO; + udelay(100); + + /* Rising Edge on EXTON to reset DA9030 */ + GPIO17 = 0x8800; /* configure GPIO17, no pullup, -down */ + GPDR0 |= (1<<17); /* GPIO17 is output */ + GSDR0 = (1<<17); + GPCR0 = (1<<17); /* drive GPIO17 low */ + GPSR0 = (1<<17); /* drive GPIO17 high */ + +#if CFG_DA9030_EXTON_DELAY + udelay((unsigned long) CFG_DA9030_EXTON_DELAY); /* wait for DA9030 */ +#endif + GPCR0 = (1<<17); /* drive GPIO17 low */ + + /* reset the watchdog and go active (0xec) */ + val = (SYS_CONTROL_A_HWRES_ENABLE | + (0x6<<4) | + SYS_CONTROL_A_WDOG_ACTION | + SYS_CONTROL_A_WATCHDOG); + if(i2c_write(addr, SYS_CONTROL_A, 1, &val, 1)) { + printf("Error accessing DA9030 via i2c.\n"); + return; + } + + i2c_reg_write(addr, REG_CONTROL_1_97, 0xfd); /* disable LDO1, enable LDO6 */ + i2c_reg_write(addr, LDO2_3, 0xd1); /* LDO2 =1,9V, LDO3=3,1V */ + i2c_reg_write(addr, LDO4_5, 0xcc); /* LDO2 =1,9V, LDO3=3,1V */ + i2c_reg_write(addr, LDO6_SIMCP, 0x3e); /* LDO6=3,2V, SIMCP = 5V support */ + i2c_reg_write(addr, LDO7_8, 0xc9); /* LDO7=2,7V, LDO8=3,0V */ + i2c_reg_write(addr, LDO9_12, 0xec); /* LDO9=3,0V, LDO12=3,2V */ + i2c_reg_write(addr, BUCK, 0x0c); /* Buck=1.2V */ + i2c_reg_write(addr, REG_CONTROL_2_98, 0x7f); /* All LDO'S on 8,9,10,11,12,14 */ + i2c_reg_write(addr, LDO_10_11, 0xcc); /* LDO10=3.0V LDO11=3.0V */ + i2c_reg_write(addr, LDO_15, 0xae); /* LDO15=1.8V, dislock first 3bit */ + i2c_reg_write(addr, LDO_14_16, 0x05); /* LDO14=2.8V, LDO16=NB */ + i2c_reg_write(addr, LDO_18_19, 0x9c); /* LDO18=3.0V, LDO19=2.7V */ + i2c_reg_write(addr, LDO_17_SIMCP0, 0x2c); /* LDO17=3.0V, SIMCP=3V support */ + i2c_reg_write(addr, BUCK2_DVC1, 0x9a); /* Buck2=1.5V plus Update support of 520 MHz */ + i2c_reg_write(addr, REG_CONTROL_2_18, 0x43); /* Ball on */ + i2c_reg_write(addr, MISC_CONTROLB, 0x08); /* session valid enable */ + i2c_reg_write(addr, USBPUMP, 0xc1); /* start pump, ignore HW signals */ + + val = i2c_reg_read(addr, STATUS); + if(val & STATUS_CHDET) + printf("Charger detected, turning on LED.\n"); + else { + printf("No charger detetected.\n"); + /* undervoltage? print error and power down */ + } +} + + +#if 0 +/* reset the DA9030 watchdog */ +void hw_watchdog_reset(void) +{ + uchar addr = (uchar) DA9030_I2C_ADDR, val = 0; + val = i2c_reg_read(addr, SYS_CONTROL_A); + val |= SYS_CONTROL_A_WATCHDOG; + i2c_reg_write(addr, SYS_CONTROL_A, val); +} +#endif |