From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754233Ab2GRMHX (ORCPT ); Wed, 18 Jul 2012 08:07:23 -0400 Received: from mail.work-microwave.de ([62.245.205.51]:35813 "EHLO work-microwave.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754170Ab2GRMHR (ORCPT ); Wed, 18 Jul 2012 08:07:17 -0400 From: Roland Stigge To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kevin.wells@nxp.com, srinivas.bakki@nxp.com, aletes.xgr@gmail.com Cc: Roland Stigge Subject: [PATCH 1/4] ARM: LPC32xx: Set system serial based on cpu unique id Date: Wed, 18 Jul 2012 14:06:48 +0200 Message-Id: <1342613211-13190-2-git-send-email-stigge@antcom.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1342613211-13190-1-git-send-email-stigge@antcom.de> References: <1342613211-13190-1-git-send-email-stigge@antcom.de> X-FEAS-SYSTEM-WL: rst@work-microwave.de, 192.168.11.78 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexandre Pereira da Silva LPC32xx SoC has a 128 bits unique id that can be used as a system serial number, if none has been provided by atags or dt. Signed-off-by: Alexandre Pereira da Silva Signed-off-by: Roland Stigge --- arch/arm/mach-lpc32xx/common.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) --- linux-2.6.orig/arch/arm/mach-lpc32xx/common.c +++ linux-2.6/arch/arm/mach-lpc32xx/common.c @@ -26,6 +26,7 @@ #include #include +#include #include #include @@ -224,7 +225,7 @@ void lpc23xx_restart(char mode, const ch ; } -static int __init lpc32xx_display_uid(void) +static int __init lpc32xx_check_uid(void) { u32 uid[4]; @@ -233,6 +234,11 @@ static int __init lpc32xx_display_uid(vo printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n", uid[3], uid[2], uid[1], uid[0]); + if (!system_serial_low && !system_serial_high) { + system_serial_low = uid[0]; + system_serial_high = uid[1]; + } + return 1; } -arch_initcall(lpc32xx_display_uid); +arch_initcall(lpc32xx_check_uid);