[src/netbsd-1-4]: src/sys/arch/alpha/stand/common abstract the prom device op...

[cgd <cgd%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/50bfc9bd89bc
branches:  netbsd-1-4
changeset: 468022:50bfc9bd89bc
user:      cgd <cgd%NetBSD.org@localhost>
date:      Fri Apr 02 03:19:09 1999 +0000

description:
abstract the prom device open/close into a separate module, which
provides the correct functions for primary, secondary, and unified
boot blocks.  actually behave correctly (e.g. expect correct arguments,
perform correct operations) depending on which you are.  also
some minor cleanup.

diffstat:

 sys/arch/alpha/stand/common/booted_dev.c |  68 ++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)

diffs (72 lines):

diff -r 1b7932f3865a -r 50bfc9bd89bc sys/arch/alpha/stand/common/booted_dev.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/alpha/stand/common/booted_dev.c  Fri Apr 02 03:19:09 1999 +0000
@@ -0,0 +1,68 @@
+/* $NetBSD: booted_dev.c,v 1.1.2.2 1999/04/02 03:19:09 cgd Exp $ */
+
+/*
+ * Copyright (c) 1999 Christopher G. Demetriou.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Christopher G. Demetriou
+ *     for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <lib/libsa/stand.h>
+#include <lib/libkern/libkern.h>
+
+#include <machine/prom.h>
+#include "common.h"
+
+long   booted_dev_fd;
+#if defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK)
+char   booted_dev_name[BOOTED_DEV_MAXNAMELEN];
+#endif /* defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK) */
+
+#if defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK)
+int
+booted_dev_open(void)
+{
+       prom_return_t ret;
+       int devlen;
+
+       /*
+        * XXX
+        * We don't know what device names look like yet,
+        * so we can't change them.
+        */
+       ret.bits = prom_getenv(PROM_E_BOOTED_DEV, booted_dev_name,
+           sizeof(booted_dev_name));
+       devlen = ret.u.retval;
+
+       ret.bits = prom_open(booted_dev_name, devlen);
+
+       if (ret.u.status)
+               return 0;
+       booted_dev_fd = ret.u.retval;
+
+       return 1;
+}
+#endif