From patchwork Mon Feb 28 11:46:13 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aneesh V X-Patchwork-Id: 84800 X-Patchwork-Delegate: s-paulraj@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 12851B70FC for ; Mon, 28 Feb 2011 22:47:34 +1100 (EST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id AFFA928117; Mon, 28 Feb 2011 12:47:27 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id t9t5KeDQcJQv; Mon, 28 Feb 2011 12:47:26 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id EB301280AC; Mon, 28 Feb 2011 12:46:41 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id DBB9E28096 for ; Mon, 28 Feb 2011 12:46:34 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at theia.denx.de Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wkaGsFvcJrOd for ; Mon, 28 Feb 2011 12:46:33 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by theia.denx.de (Postfix) with ESMTPS id 102CD2808D for ; Mon, 28 Feb 2011 12:46:29 +0100 (CET) Received: from dbdp31.itg.ti.com ([172.24.170.98]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id p1SBkOn1023705 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 28 Feb 2011 05:46:26 -0600 Received: from localhost (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p1SBkNDk011770; Mon, 28 Feb 2011 17:16:23 +0530 (IST) From: Aneesh V To: u-boot@lists.denx.de Date: Mon, 28 Feb 2011 17:16:13 +0530 Message-Id: <1298893591-17636-5-git-send-email-aneesh@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1298893591-17636-1-git-send-email-aneesh@ti.com> References: <1298893591-17636-1-git-send-email-aneesh@ti.com> Cc: x-loader@googlegroups.com, patches@linaro.org Subject: [U-Boot] [PATCH 04/22] armv7: start.S: provide a hook for saving boot params X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.9 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de Provide a means by which u-boot/SPL can save parameters passed to it by ROM code or the pre-loader. A new function 'save_boot_params' has been defined and a default implentation provided. Please note that we do not have a stack yet. So, any implementation of this function should not use stack. Signed-off-by: Aneesh V --- arch/arm/cpu/armv7/cpu.c | 7 +++++++ arch/arm/cpu/armv7/start.S | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index a01e0d6..54533fc 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -41,6 +41,13 @@ static void cache_flush(void); +void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) +{ +} + +void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) + __attribute__((weak, alias("save_boot_params_default"))); + int cleanup_before_linux(void) { unsigned int i; diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index cb4f92f..3618190 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -103,6 +103,7 @@ IRQ_STACK_START_IN: */ reset: + bl save_boot_params /* * set the cpu to SVC32 mode */