xnu-792.17.14.tar.gz

[apple/xnu.git] / osfmk / ppc / serial_io.c

diff --git a/osfmk/ppc/serial_io.c b/osfmk/ppc/serial_io.c
index cd88d1e51dc9224b61e96d3720eae44fc6c77bb0..425570b128279384e0262ee10dbf309ada276e79 100644 (file)
--- a/osfmk/ppc/serial_io.c
+++ b/osfmk/ppc/serial_io.c
@@ -1,31 +1,29 @@
 /*
  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * This file contains Original Code and/or Modifications of Original Code 
- * as defined in and that are subject to the Apple Public Source License 
- * Version 2.0 (the 'License'). You may not use this file except in 
- * compliance with the License.  The rights granted to you under the 
- * License may not be used to create, or enable the creation or 
- * redistribution of, unlawful or unlicensed copies of an Apple operating 
- * system, or to circumvent, violate, or enable the circumvention or 
- * violation of, any terms of an Apple operating system software license 
- * agreement.
- *
- * Please obtain a copy of the License at 
- * http://www.opensource.apple.com/apsl/ and read it before using this 
- * file.
- *
- * The Original Code and all software distributed under the License are 
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
  * limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
@@ -109,6 +107,8 @@ extern unsigned int disableSerialOuput;
 int    serial_initted = 0;
 unsigned int scc_parm_done = 0;
 
+extern unsigned int serialmode;
+
 static struct scc_byte {
        unsigned char   reg;
        unsigned char   val;
@@ -405,17 +405,6 @@ again:
        return c;
 }
 
-
-/*
- *     This front-ends scc_getc to make some intel changes easier
- */
- 
-int _serial_getc(int unit, int line, boolean_t wait, boolean_t raw) {
-
-       return(scc_getc(unit, line, wait, raw));
-
-}
-
 /*
  * Put a char on a specific SCC line
  * use splhigh since we might be doing a printf in high spl'd code
@@ -664,5 +653,55 @@ scc_param(struct scc_tty *tp)
 
 }
 
+/*
+ *  This routine will start a thread that polls the serial port, listening for
+ *  characters that have been typed.
+ */
+
+void
+serial_keyboard_init(void)
+{
+       kern_return_t   result;
+       thread_t                thread;
+
+       if(!(serialmode & 2)) return;           /* Leave if we do not want a serial console */
+
+       kprintf("Serial keyboard started\n");
+       result = kernel_thread_start_priority((thread_continue_t)serial_keyboard_start, NULL, MAXPRI_KERNEL, &thread);
+       if (result != KERN_SUCCESS)
+               panic("serial_keyboard_init");
+
+       thread_deallocate(thread);
+}
+
+void
+serial_keyboard_start(void)
+{
+       serial_keyboard_poll();                 /* Go see if there are any characters pending now */
+       panic("serial_keyboard_start: we can't get back here\n");
+}
+
+static int ptestxxx = 0;
+
+void
+serial_keyboard_poll(void)
+{
+       int chr;
+       uint64_t next;
+       extern void cons_cinput(char ch);       /* The BSD routine that gets characters */
+
+
+       while(1) {                              /* Do this for a while */
+               chr = scc_getc(0, 1, 0, 1);     /* Get a character if there is one */
+               if(chr < 0) break;              /* The serial buffer is empty */
+               cons_cinput((char)chr);         /* Buffer up the character */
+       }
+
+       clock_interval_to_deadline(16, 1000000, &next); /* Get time of pop */
+
+       assert_wait_deadline((event_t)serial_keyboard_poll, THREAD_UNINT, next);        /* Show we are "waiting" */
+       thread_block((thread_continue_t)serial_keyboard_poll);  /* Wait for it */
+       panic("serial_keyboard_poll: Shouldn't never ever get here...\n");
+}
 
 #endif /* NSCC > 0 */