Attachment 213701 Details for Bug 231768 – test patch

[patch] test patch

rhel4-fix_reboot.patch (text/plain), 1.42 KB, created by Aristeu Rozanski on 2007-10-02 16:53:33 UTC

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Creator: Aristeu Rozanski

Created: 2007-10-02 16:53:33 UTC

Size: 1.42 KB

patch

obsolete

>commit 59f4e7d572980a521b7bdba74ab71b21f5995538
>commit 8b93789808756bcc1e5c90c99f1b1ef52f839a51
> 
>---
> include/asm-i386/mach-default/mach_reboot.h |   31 ++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
>--- tree.orig/include/asm-i386/mach-default/mach_reboot.h	2004-10-18 17:53:50.000000000 -0400
>+++ tree/include/asm-i386/mach-default/mach_reboot.h	2007-10-02 10:30:52.000000000 -0400
>@@ -19,12 +19,43 @@
> static inline void mach_reboot(void)
> {
> 	int i;
>+
>+	/* old method, works on most machines */
> 	for (i = 0; i < 100; 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 */

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Attachments on bug 231768: 149791 | 213701