From patchwork Sat May 11 14:19:13 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Holt X-Patchwork-Id: 2554121 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork2.kernel.org (Postfix) with ESMTP id 9B69DDF230 for ; Sat, 11 May 2013 14:22:49 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UbAfe-0005m9-DP; Sat, 11 May 2013 14:21:12 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UbAf9-0003Aj-ND; Sat, 11 May 2013 14:20:39 +0000 Received: from relay3.sgi.com ([192.48.152.1] helo=relay.sgi.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UbAeM-00033p-7J for linux-arm-kernel@lists.infradead.org; Sat, 11 May 2013 14:19:59 +0000 Received: from estes.americas.sgi.com (estes.americas.sgi.com [128.162.236.10]) by relay3.corp.sgi.com (Postfix) with ESMTP id 44660AC005; Sat, 11 May 2013 07:19:30 -0700 (PDT) Received: from asylum.americas.sgi.com (asylum.americas.sgi.com [128.162.246.107]) by estes.americas.sgi.com (Postfix) with ESMTP id 012B77003218; Sat, 11 May 2013 09:19:30 -0500 (CDT) Received: by asylum.americas.sgi.com (Postfix, from userid 1641) id F0C1C14976; Sat, 11 May 2013 09:19:29 -0500 (CDT) From: Robin Holt To: Andrew Morton Subject: [PATCH -v11 06/11] x86, prepare reboot_mode for moving to generic kernel code. Date: Sat, 11 May 2013 09:19:13 -0500 Message-Id: <1368281958-26695-7-git-send-email-holt@sgi.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1368281958-26695-1-git-send-email-holt@sgi.com> References: <1368281958-26695-1-git-send-email-holt@sgi.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130511_101950_583780_1DC6AA0C X-CRM114-Status: GOOD ( 15.64 ) X-Spam-Score: -5.7 (-----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-5.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [192.48.152.1 listed in list.dnswl.org] -1.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Russ Anderson , Miguel Boton , the arch/x86 maintainers , Linux Kernel Mailing List , Robin Holt , "H. Peter Anvin" , Russell King , Guan Xuetao , Arm Mailing List X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch prepares for the moving the parsing of reboot= to the generic kernel code by making reboot_mode into a more generic form. Signed-off-by: Robin Holt To: Andrew Morton Cc: H. Peter Anvin Cc: Miguel Boton Cc: Russ Anderson Cc: Robin Holt Cc: Russell King Cc: Guan Xuetao Cc: Linux Kernel Mailing List Cc: the arch/x86 maintainers Cc: Arm Mailing List Acked-by: Ingo Molnar --- arch/x86/kernel/reboot.c | 12 +++++++----- include/linux/reboot.h | 5 +++++ 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 76fa1e9..f770340 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -36,7 +36,7 @@ void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); static const struct desc_ptr no_idt = {}; -static int reboot_mode; +static enum reboot_mode reboot_mode; enum reboot_type reboot_type = BOOT_ACPI; int reboot_force; @@ -88,11 +88,11 @@ static int __init reboot_setup(char *str) switch (*str) { case 'w': - reboot_mode = 0x1234; + reboot_mode = REBOOT_WARM; break; case 'c': - reboot_mode = 0; + reboot_mode = REBOOT_COLD; break; #ifdef CONFIG_SMP @@ -536,6 +536,7 @@ static void native_machine_emergency_restart(void) int i; int attempt = 0; int orig_reboot_type = reboot_type; + unsigned short mode; if (reboot_emergency) emergency_vmx_disable_all(); @@ -543,7 +544,8 @@ static void native_machine_emergency_restart(void) tboot_shutdown(TB_SHUTDOWN_REBOOT); /* Tell the BIOS if we want cold or warm reboot */ - *((unsigned short *)__va(0x472)) = reboot_mode; + mode = reboot_mode == REBOOT_WARM ? 0x1234 : 0; + *((unsigned short *)__va(0x472)) = mode; for (;;) { /* Could also try the reset bit in the Hammer NB */ @@ -585,7 +587,7 @@ static void native_machine_emergency_restart(void) case BOOT_EFI: if (efi_enabled(EFI_RUNTIME_SERVICES)) - efi.reset_system(reboot_mode ? + efi.reset_system(reboot_mode == REBOOT_WARM ? EFI_RESET_WARM : EFI_RESET_COLD, EFI_SUCCESS, 0, NULL); diff --git a/include/linux/reboot.h b/include/linux/reboot.h index c6eba21..37d56c3 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -10,6 +10,11 @@ #define SYS_HALT 0x0002 /* Notify of system halt */ #define SYS_POWER_OFF 0x0003 /* Notify of system power off */ +enum reboot_mode { + REBOOT_COLD = 0, + REBOOT_WARM, +}; + extern int register_reboot_notifier(struct notifier_block *); extern int unregister_reboot_notifier(struct notifier_block *);