+ 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)
+{