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authorSebastian Herbszt <herbszt@gmx.de>2013-02-10 19:30:51 +0100
committerMatt Fleming <matt.fleming@intel.com>2013-02-11 13:13:24 +0000
commit88f8ad6a7721a7c1dcb5fc756906f8ccd90f6cfe (patch)
tree8d00e92252aa03fc1c7cd41a06a22c97867a3c00 /com32/modules
parent6f7b0e4a33e4064c8e814cbebeacf7206c9fb850 (diff)
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poweroff COM32 module
This module is able to power off a system via APM. It replaces the poweroff COMBOOT module. Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'com32/modules')
-rw-r--r--com32/modules/Makefile2
-rw-r--r--com32/modules/poweroff.c88
2 files changed, 89 insertions, 1 deletions
diff --git a/com32/modules/Makefile b/com32/modules/Makefile
index 628fa5d6..1998a0ef 100644
--- a/com32/modules/Makefile
+++ b/com32/modules/Makefile
@@ -25,7 +25,7 @@ MODULES = config.c32 ethersel.c32 dmitest.c32 cpuidtest.c32 \
kbdmap.c32 cmd.c32 vpdtest.c32 host.c32 ls.c32 gpxecmd.c32 \
ifcpu.c32 cpuid.c32 cat.c32 pwd.c32 ifplop.c32 zzjson.c32 \
whichsys.c32 prdhcp.c32 pxechn.c32 kontron_wdt.c32 ifmemdsk.c32 \
- hexdump.c32
+ hexdump.c32 poweroff.c32
TESTFILES =
diff --git a/com32/modules/poweroff.c b/com32/modules/poweroff.c
new file mode 100644
index 00000000..8b656ad4
--- /dev/null
+++ b/com32/modules/poweroff.c
@@ -0,0 +1,88 @@
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2013 Sebastian Herbszt - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston MA 02110-1301, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * poweroff.c
+ *
+ * APM poweroff module
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <com32.h>
+
+int main()
+{
+ com32sys_t inregs, outregs;
+
+ memset(&inregs, 0, sizeof inregs);
+
+ inregs.eax.l = 0x5300; /* APM Installation Check (00h) */
+ inregs.ebx.l = 0; /* APM BIOS (0000h) */
+ __intcall(0x15, &inregs, &outregs);
+
+ if (outregs.eflags.l & EFLAGS_CF) {
+ printf("APM not present.\n");
+ return 1;
+ }
+
+ if ((outregs.ebx.l & 0xffff) != 0x504d) { /* signature 'PM' */
+ printf("APM not present.\n");
+ return 1;
+ }
+
+ if ((outregs.eax.l & 0xffff) < 0x101) { /* Need version 1.1+ */
+ printf("APM 1.1+ not supported.\n");
+ return 1;
+ }
+
+ if ((outregs.ecx.l & 0x8) == 0x8) { /* bit 3 APM BIOS Power Management disabled */
+ printf("Power management disabled.\n");
+ return 1;
+ }
+
+ inregs.eax.l = 0x5301; /* APM Real Mode Interface Connect (01h) */
+ inregs.ebx.l = 0; /* APM BIOS (0000h) */
+ __intcall(0x15, &inregs, &outregs);
+
+ if (outregs.eflags.l & EFLAGS_CF) {
+ printf("APM RM interface connect failed.\n");
+ return 1;
+ }
+
+ inregs.eax.l = 0x530e; /* APM Driver Version (0Eh) */
+ inregs.ebx.l = 0; /* APM BIOS (0000h) */
+ inregs.ecx.l = 0x101; /* APM Driver version 1.1 */
+ __intcall(0x15, &inregs, &outregs);
+
+ if (outregs.eflags.l & EFLAGS_CF) {
+ printf("APM 1.1+ not supported.\n");
+ return 1;
+ }
+
+ if ((outregs.ecx.l & 0xffff) < 0x101) { /* APM Connection version */
+ printf("APM 1.1+ not supported.\n");
+ return 1;
+ }
+
+ inregs.eax.l = 0x5307; /* Set Power State (07h) */
+ inregs.ebx.l = 1; /* All devices power managed by the APM BIOS */
+ inregs.ecx.l = 3; /* Power state off */
+ __intcall(0x15, &inregs, &outregs);
+
+ if (outregs.eflags.l & EFLAGS_CF) {
+ printf("Power off failed.\n");
+ return 1;
+ }
+
+ return 0;
+}