linux-kernel - [tip:x86/urgent] x86/ce4100: Fix reboot by forcing the reboot method to be KBD

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Message-ID: <tip-d7959916026aaae60e1878ae33c7503b2cc4471d@git.kernel.org>
Date:	Tue, 30 Oct 2012 05:26:45 -0700
From:	tip-bot for Maxime Bizon <mbizon@...ebox.fr>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	bigeasy@...utronix.de, tglx@...utronix.de, ffainelli@...ebox.fr,
	mbizon@...ebox.fr
Subject: [tip:x86/urgent] x86/ce4100:
  Fix reboot by forcing the reboot method to be KBD

Commit-ID:  d7959916026aaae60e1878ae33c7503b2cc4471d
Gitweb:     http://git.kernel.org/tip/d7959916026aaae60e1878ae33c7503b2cc4471d
Author:     Maxime Bizon <mbizon@...ebox.fr>
AuthorDate: Mon, 29 Oct 2012 14:40:19 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 30 Oct 2012 10:16:46 +0100

x86/ce4100: Fix reboot by forcing the reboot method to be KBD

The default reboot is via ACPI for this platform, and the CEFDK
bootloader actually supports this, but will issue a system power
off instead of a real reboot. Setting the reboot method to be
KBD instead of ACPI ensures proper system reboot.

Acked-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Maxime Bizon <mbizon@...ebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@...ebox.fr>
Cc: rui.zhang@...el.com
Cc: alan@...ux.intel.com
Link: http://lkml.kernel.org/r/1351518020-25556-3-git-send-email-ffainelli@freebox.fr
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/platform/ce4100/ce4100.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c
index 5de16e3..92525cb 100644
--- a/arch/x86/platform/ce4100/ce4100.c
+++ b/arch/x86/platform/ce4100/ce4100.c
@@ -21,6 +21,7 @@
 #include <asm/i8259.h>
 #include <asm/io.h>
 #include <asm/io_apic.h>
+#include <asm/emergency-restart.h>
 
 static int ce4100_i8042_detect(void)
 {
@@ -151,6 +152,15 @@ void __init x86_ce4100_early_setup(void)
 	x86_init.mpparse.find_smp_config = x86_init_noop;
 	x86_init.pci.init = ce4100_pci_init;
 
+	/*
+	 * By default, the reboot method is ACPI which is supported by the
+	 * CE4100 bootloader CEFDK using FADT.ResetReg Address and ResetValue
+	 * the bootloader will however issue a system power off instead of
+	 * reboot. By using BOOT_KBD we ensure proper system reboot as
+	 * expected.
+	 */
+	reboot_type = BOOT_KBD;
+
 #ifdef CONFIG_X86_IO_APIC
 	x86_init.pci.init_irq = sdv_pci_init;
 	x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck;
--
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