From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp04.au.ibm.com (e23smtp04.au.ibm.com [202.81.31.146]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp04.au.ibm.com", Issuer "GeoTrust SSL CA" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id E783FB70DF for ; Mon, 2 Aug 2010 10:55:38 +1000 (EST) Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [202.81.31.245]) by e23smtp04.au.ibm.com (8.14.4/8.13.1) with ESMTP id o720pDDA016112 for ; Mon, 2 Aug 2010 10:51:13 +1000 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o720tcc91658914 for ; Mon, 2 Aug 2010 10:55:38 +1000 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o720tcVY019693 for ; Mon, 2 Aug 2010 10:55:38 +1000 From: Benjamin Herrenschmidt To: linuxppc-dev@ozlabs.org Subject: [PATCH 08/11] powerpc/nvram: Add nvram_find_partition() Date: Mon, 2 Aug 2010 10:55:19 +1000 Message-Id: <1280710522-6362-9-git-send-email-benh@kernel.crashing.org> In-Reply-To: <1280710522-6362-8-git-send-email-benh@kernel.crashing.org> References: <1280710522-6362-1-git-send-email-benh@kernel.crashing.org> <1280710522-6362-2-git-send-email-benh@kernel.crashing.org> <1280710522-6362-3-git-send-email-benh@kernel.crashing.org> <1280710522-6362-4-git-send-email-benh@kernel.crashing.org> <1280710522-6362-5-git-send-email-benh@kernel.crashing.org> <1280710522-6362-6-git-send-email-benh@kernel.crashing.org> <1280710522-6362-7-git-send-email-benh@kernel.crashing.org> <1280710522-6362-8-git-send-email-benh@kernel.crashing.org> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 c934b5a..fd0d12d 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 -- 1.6.3.3