diff options
Diffstat (limited to 'board/delta')
| -rw-r--r-- | board/delta/delta.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/board/delta/delta.c b/board/delta/delta.c index b7671dd..b127ac8 100644 --- a/board/delta/delta.c +++ b/board/delta/delta.c @@ -28,6 +28,8 @@ #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; @@ -35,6 +37,9 @@ 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 @@ -56,13 +61,216 @@ int board_init (void) 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; |