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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 11:20:03 +0200
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 11:20:03 +0200
commit96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch)
treed947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86/mach-default/mach_reboot.h
parent27bd0c955648646abf2a353a8371d28c37bcd982 (diff)
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i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/mach-default/mach_reboot.h')
-rw-r--r--include/asm-x86/mach-default/mach_reboot.h61
1 files changed, 61 insertions, 0 deletions
diff --git a/include/asm-x86/mach-default/mach_reboot.h b/include/asm-x86/mach-default/mach_reboot.h
new file mode 100644
index 00000000000..e23fd9fbebb
--- /dev/null
+++ b/include/asm-x86/mach-default/mach_reboot.h
@@ -0,0 +1,61 @@
+/*
+ * arch/i386/mach-generic/mach_reboot.h
+ *
+ * Machine specific reboot functions for generic.
+ * Split out from reboot.c by Osamu Tomita <tomita@cinet.co.jp>
+ */
+#ifndef _MACH_REBOOT_H
+#define _MACH_REBOOT_H
+
+static inline void kb_wait(void)
+{
+ int i;
+
+ for (i = 0; i < 0x10000; i++)
+ if ((inb_p(0x64) & 0x02) == 0)
+ break;
+}
+
+static inline void mach_reboot(void)
+{
+ int i;
+
+ /* old method, works on most machines */
+ for (i = 0; i < 10; i++) {
+ kb_wait();
+ udelay(50);
+ outb(0xfe, 0x64); /* pulse reset low */
+ udelay(50);
+ }
+
+ /* New method: sets the "System flag" which, when set, indicates
+ * successful completion of the keyboard controller self-test (Basic
+ * Assurance Test, BAT). This is needed for some machines with no
+ * keyboard plugged in. This read-modify-write sequence sets only the
+ * system flag
+ */
+ for (i = 0; i < 10; i++) {
+ int cmd;
+
+ outb(0x20, 0x64); /* read Controller Command Byte */
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ cmd = inb(0x60);
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ outb(0x60, 0x64); /* write Controller Command Byte */
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ outb(cmd | 0x04, 0x60); /* set "System flag" */
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ outb(0xfe, 0x64); /* pulse reset low */
+ udelay(50);
+ }
+}
+
+#endif /* !_MACH_REBOOT_H */