From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp08.au.ibm.com (e23smtp08.au.ibm.com [202.81.31.141]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp08.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 6DCD51008C2 for ; Tue, 30 Nov 2010 16:47:54 +1100 (EST) Received: from d23relay05.au.ibm.com (d23relay05.au.ibm.com [202.81.31.247]) by e23smtp08.au.ibm.com (8.14.4/8.13.1) with ESMTP id oAU5lqva028601 for ; Tue, 30 Nov 2010 16:47:52 +1100 Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay05.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id oAU5lppb1749204 for ; Tue, 30 Nov 2010 16:47:51 +1100 Received: from d23av04.au.ibm.com (loopback [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id oAU5lp4A027204 for ; Tue, 30 Nov 2010 16:47:51 +1100 From: benh@kernel.crashing.org To: linuxppc-dev@ozlabs.org Subject: [PATCH 08/13] powerpc/nvram: Add nvram_find_partition() Date: Tue, 30 Nov 2010 16:47:38 +1100 Message-Id: <1291096063-14386-8-git-send-email-benh@kernel.crashing.org> In-Reply-To: <1291096063-14386-1-git-send-email-benh@kernel.crashing.org> References: <1291096063-14386-1-git-send-email-benh@kernel.crashing.org> Cc: jkensito@us.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Benjamin Herrenschmidt Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/nvram_64.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index 6dd2700..01e6844 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -429,6 +429,28 @@ static int nvram_get_partition_size(loff_t data_index) } +/** + * nvram_find_partition - Find an nvram partition by signature and name + * @name: Name of the partition or NULL for any name + * @sig: Signature to test against + * @out_size: if non-NULL, returns the size of the data part of the partition + */ +loff_t nvram_find_partition(const char *name, int sig, int *out_size) +{ + struct nvram_partition *p; + + list_for_each_entry(p, &nvram_part->partition, partition) { + if (p->header.signature == sig && + (!name || !strncmp(p->header.name, name, 12))) { + if (out_size) + *out_size = (p->header.length - 1) * + NVRAM_BLOCK_LEN; + return p->index + NVRAM_HEADER_LEN; + } + } + return 0; +} + /* nvram_setup_partition * * This will setup the partition we need for buffering the -- 1.7.1