From 9b91c554083c5f2e8e64e7f91cc6c212db2fb21e Mon Sep 17 00:00:00 2001
From: okuji <okuji@localhost>
Date: Thu, 15 Jun 2000 10:21:01 +0000
Subject: [PATCH] add two new commands, reboot and halt.

---
 ChangeLog           | 18 ++++++++++++++
 NEWS                |  3 +++
 configure           |  2 +-
 configure.in        |  2 +-
 docs/grub-install.8 |  2 +-
 docs/grub.8         |  2 +-
 docs/mbchk.1        |  2 +-
 docs/stamp-vti      |  6 ++---
 docs/version.texi   |  6 ++---
 grub/asmstub.c      | 11 +++++++++
 stage2/asm.S        | 58 +++++++++++++++++++++++++++++++++++++++++++++
 stage2/builtins.c   | 46 +++++++++++++++++++++++++++++++++++
 stage2/shared.h     |  7 ++++++
 13 files changed, 154 insertions(+), 11 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 677659692..01373ffbe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+2000-06-15  OKUJI Yoshinori  <okuji@gnu.org>
+
+	* configure.in (AM_INIT_AUTOMAKE): Increase the version number.
+	I wish that 0.5.96 will not be released actually...
+	
+	* stage2/builtins.c (halt_func): New function.
+	(builtin_halt): New variable.
+	(reboot_func): New function.
+	(builtin_reboot): New variable.
+	(builtin_table): Added pointers to BUILTIN_HALT and
+	BUILTIN_REBOOT.
+	* stage2/asm.S (grub_halt): New function.
+	(grub_reboot): Likewise.
+	* stage2/shared.h (grub_halt): Declared.
+	(grub_reboot): Likewise.
+	* grub/asmstub.c (grub_reboot): New function.
+	(grub_halt): Likewise.
+	
 2000-06-12  Gordon Matzigkeit  <gord@fig.org>
 
 	* stage2/stage2.c (run_menu): Don't display the menu if the
diff --git a/NEWS b/NEWS
index 4e79ac5e9..b2ed2ae57 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 NEWS - list of user-visible changes between releases of GRUB
 
+New in 0.5.96 - XXXX-XX-XX:
+* New commands, "reboot" and "halt".
+
 New in 0.5.95 - XXXX-XX-XX:
 * NetBSD ELF kernel support is added. You have to specify the new option
   to the command "kernel". See below.
diff --git a/configure b/configure
index ead247c41..b022377f4 100644
--- a/configure
+++ b/configure
@@ -876,7 +876,7 @@ fi
 
 # Define the identity of the package.
 PACKAGE=grub
-VERSION=0.5.95
+VERSION=0.5.96
 cat >> confdefs.h <<EOF
 #define PACKAGE "$PACKAGE"
 EOF
diff --git a/configure.in b/configure.in
index 9990419cd..846b9c5c3 100644
--- a/configure.in
+++ b/configure.in
@@ -14,7 +14,7 @@ dnl USE OF THIS SOFTWARE.
 
 AC_INIT(stage2/stage2.c)
 dnl Grab the package and version from the top debian/changelog entry.
-AM_INIT_AUTOMAKE(grub, 0.5.95)
+AM_INIT_AUTOMAKE(grub, 0.5.96)
 AM_CONFIG_HEADER(config.h)
 AC_PREREQ(2.13)
 
diff --git a/docs/grub-install.8 b/docs/grub-install.8
index 638ec8038..d50c8e3cd 100644
--- a/docs/grub-install.8
+++ b/docs/grub-install.8
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.020.
-.TH GRUB-INSTALL "8" "June 2000" "grub-install (GNU GRUB 0.5.95)" FSF
+.TH GRUB-INSTALL "8" "June 2000" "grub-install (GNU GRUB 0.5.96)" FSF
 .SH NAME
 grub-install \- install GRUB on your drive
 .SH SYNOPSIS
diff --git a/docs/grub.8 b/docs/grub.8
index 796026765..813d17aac 100644
--- a/docs/grub.8
+++ b/docs/grub.8
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.020.
-.TH GRUB "8" "June 2000" "GNU GRUB 0.5.95" FSF
+.TH GRUB "8" "June 2000" "GNU GRUB 0.5.96" FSF
 .SH NAME
 GRUB \- the grub shell
 .SH SYNOPSIS
diff --git a/docs/mbchk.1 b/docs/mbchk.1
index ade7f1e68..e971c358b 100644
--- a/docs/mbchk.1
+++ b/docs/mbchk.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.020.
-.TH MBCHK "1" "June 2000" "mbchk (GNU GRUB 0.5.95)" FSF
+.TH MBCHK "1" "June 2000" "mbchk (GNU GRUB 0.5.96)" FSF
 .SH NAME
 mbchk \- check the format of a Multiboot kernel
 .SH SYNOPSIS
diff --git a/docs/stamp-vti b/docs/stamp-vti
index 08082e3b5..47b335027 100644
--- a/docs/stamp-vti
+++ b/docs/stamp-vti
@@ -1,3 +1,3 @@
-@set UPDATED 2 April 2000
-@set EDITION 0.5.95
-@set VERSION 0.5.95
+@set UPDATED 11 June 2000
+@set EDITION 0.5.96
+@set VERSION 0.5.96
diff --git a/docs/version.texi b/docs/version.texi
index 08082e3b5..47b335027 100644
--- a/docs/version.texi
+++ b/docs/version.texi
@@ -1,3 +1,3 @@
-@set UPDATED 2 April 2000
-@set EDITION 0.5.95
-@set VERSION 0.5.95
+@set UPDATED 11 June 2000
+@set EDITION 0.5.96
+@set VERSION 0.5.96
diff --git a/grub/asmstub.c b/grub/asmstub.c
index e6180ac88..8d3386f5d 100644
--- a/grub/asmstub.c
+++ b/grub/asmstub.c
@@ -600,6 +600,17 @@ stop (void)
   longjmp (env_for_exit, 1);
 }
 
+void
+grub_reboot (void)
+{
+  stop ();
+}
+
+void
+grub_halt (int no_apm)
+{
+  stop ();
+}
 
 /* calls for direct boot-loader chaining */
 void
diff --git a/stage2/asm.S b/stage2/asm.S
index e7f139e6d..68b40fb6b 100644
--- a/stage2/asm.S
+++ b/stage2/asm.S
@@ -190,7 +190,65 @@ ENTRY(stop_floppy)
 	outb	%al, %dx
 	ret
 
+/*
+ * grub_reboot()
+ *
+ * Reboot the system. At the moment, rely on BIOS.
+ */
+ENTRY(grub_reboot)
+	call	EXT_C(prot_to_real)
+	.code16
+	/* cold boot */
+	movw	$0x0472, %di
+	movw	%ax, (%di)
+	ljmp	$0xFFFF, $0x0000
+	.code32
+	
+/*
+ * grub_halt(int no_apm)
+ *
+ * Halt the system, using APM if possible. If NO_APM is true, don't use
+ * APM even if it is available.
+ */
+ENTRY(grub_halt)
+	/* get the argument */
+	movl	4(%esp), %eax
+	
+	/* see if zero */
+	testl	%eax, %eax
+	jnz	EXT_C(stop)
 
+	call	EXT_C(prot_to_real)
+	.code16
+	
+	/* detect APM */
+	movw	$0x5300, %ax
+	xorw	%bx, %bx
+	int	$0x15
+	jc	EXT_C(hard_stop)
+	/* don't check %bx for buggy BIOSes... */
+
+	/* disconnect APM first */
+	movw	$0x5304, %ax
+	xorw	%bx, %bx
+	int	$0x15
+
+	/* connect APM (Is this really necessary?) */
+	movw	$0x5301, %ax
+	xorw	%bx, %bx
+	int	$0x15
+	jc	EXT_C(hard_stop)
+
+	/* set the power state to off */
+	movw	$0x5307, %ax
+	movw	$1, %bx
+	movw	$3, %cx
+	int	$0x15
+
+	/* shouldn't reach here */
+	jc	EXT_C(hard_stop)
+	.code32
+	
 /*
  * track_int13(int drive)
  *
diff --git a/stage2/builtins.c b/stage2/builtins.c
index 8dbe2e725..a3f3d4ae1 100644
--- a/stage2/builtins.c
+++ b/stage2/builtins.c
@@ -1193,6 +1193,30 @@ static struct builtin builtin_geometry =
   " on the C/H/S values automatically."
 };
 
+
+/* halt */
+static int
+halt_func (char *arg, int flags)
+{
+  int no_apm;
+
+  no_apm = (grub_memcmp (arg, "--no-apm", 8) == 0);
+  grub_halt (no_apm);
+  
+  /* Never reach here.  */
+  return 1;
+}
+
+static struct builtin builtin_halt =
+{
+  "halt",
+  halt_func,
+  BUILTIN_CMDLINE,
+  "halt [--no-apm]",
+  "Halt your system. If APM is avaiable on it, turn off the power using"
+  " the APM BIOS, unless you specify the option `--no-apm'."
+};
+
 
 /* help */
 #define MAX_SHORT_DOC_LEN	39
@@ -2272,6 +2296,26 @@ static struct builtin builtin_read =
   " display it in hex format."
 };
 
+
+/* reboot */
+static int
+reboot_func (char *arg, int flags)
+{
+  grub_reboot ();
+
+  /* Never reach here.  */
+  return 1;
+}
+
+static struct builtin builtin_reboot =
+{
+  "reboot",
+  reboot_func,
+  BUILTIN_CMDLINE,
+  "reboot",
+  "Reboot your system."
+};
+
 
 /* Print the root device information.  */
 static void
@@ -3084,6 +3128,7 @@ struct builtin *builtin_table[] =
   &builtin_find,
   &builtin_fstest,
   &builtin_geometry,
+  &builtin_halt,
   &builtin_help,
   &builtin_hide,
   &builtin_impsprobe,
@@ -3101,6 +3146,7 @@ struct builtin *builtin_table[] =
   &builtin_quit,
   &builtin_rarp,
   &builtin_read,
+  &builtin_reboot,
   &builtin_root,
   &builtin_rootnoverify,
   &builtin_setkey,
diff --git a/stage2/shared.h b/stage2/shared.h
index 56ad95115..6da7ca0a2 100644
--- a/stage2/shared.h
+++ b/stage2/shared.h
@@ -547,6 +547,13 @@ void cmain (void);
 /* Halt the processor (called after an unrecoverable error). */
 void stop (void) __attribute__ ((noreturn));
 
+/* Reboot the system.  */
+void grub_reboot (void) __attribute__ ((noreturn));
+
+/* Halt the system, using APM if possible. If NO_APM is true, don't use
+   APM even if it is available.  */
+void grub_halt (int no_apm) __attribute__ ((noreturn));
+
 /* Copy MAP to the drive map and set up int13_handler.  */
 void set_int13_handler (unsigned short *map);