From patchwork Wed Mar 5 22:07:48 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Agner X-Patchwork-Id: 3779681 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DDED4BF540 for ; Wed, 5 Mar 2014 22:08:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0E5A320263 for ; Wed, 5 Mar 2014 22:08:38 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D8D92024C for ; Wed, 5 Mar 2014 22:08:37 +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 1WLJzI-0001pt-Rp; Wed, 05 Mar 2014 22:08:29 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLJzG-0002Hj-4O; Wed, 05 Mar 2014 22:08:26 +0000 Received: from mail.kmu-office.ch ([178.209.48.102]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLJzD-0002G4-39 for linux-arm-kernel@lists.infradead.org; Wed, 05 Mar 2014 22:08:24 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id 296C74467FD for ; Wed, 5 Mar 2014 23:05:10 +0100 (CET) X-Virus-Scanned: by amavisd-new at kmu-office.ch Received: from mail.kmu-office.ch ([127.0.0.1]) by localhost (mail.kmu-office.ch [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JM587a-FILOC for ; Wed, 5 Mar 2014 23:05:10 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id 434AF4467FE for ; Wed, 5 Mar 2014 23:05:09 +0100 (CET) Received: from luegisland.agner.local (195-226-23-140.pool.cyberlink.ch [195.226.23.140]) (Authenticated sender: stefan@agner.ch) by mail.kmu-office.ch (Postfix) with ESMTPSA id E97734467F5; Wed, 5 Mar 2014 23:05:08 +0100 (CET) From: Stefan Agner To: shawn.guo@linaro.org, linux@arm.linux.org.uk Subject: [PATCH v2] ARM: vf610: add UART choice for low-level debug Date: Wed, 5 Mar 2014 23:07:48 +0100 Message-Id: <4031771265d98dad7b0cc15a1e523f026338b432.1394057216.git.stefan@agner.ch> X-Mailer: git-send-email 1.9.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140305_170823_231866_92CA91DE X-CRM114-Status: GOOD ( 10.41 ) X-Spam-Score: -1.9 (-) Cc: Stefan Agner , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add choice for low-level debug UART. Similar to i.MX6, there is a numeric configuration, valid choices are 0 to 3. Note that the kernel assumes that the boot loader initialized clock properly. Signed-off-by: Stefan Agner --- arch/arm/Kconfig.debug | 9 +++++++++ arch/arm/include/debug/vf.S | 15 +++++++++++++-- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 0531da8..c2005a7 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -946,6 +946,15 @@ config DEBUG_IMX_UART_PORT Choose UART port on which kernel low-level debug messages should be output. +config DEBUG_VF_UART_PORT + int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART + default 1 + range 0 3 + depends on SOC_VF610 + help + Choose UART port on which kernel low-level debug messages + should be output. + config DEBUG_TEGRA_UART bool depends on ARCH_TEGRA diff --git a/arch/arm/include/debug/vf.S b/arch/arm/include/debug/vf.S index ba12cc4..b889338 100644 --- a/arch/arm/include/debug/vf.S +++ b/arch/arm/include/debug/vf.S @@ -7,9 +7,20 @@ * */ +#define VF_UART0_BASE_ADDR 0x40027000 +#define VF_UART1_BASE_ADDR 0x40028000 +#define VF_UART2_BASE_ADDR 0x40029000 +#define VF_UART3_BASE_ADDR 0x4002a000 +#define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR +#define VF_UART_BASE(n) VF_UART_BASE_ADDR(n) +#define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT) + +#define VF_UART_VIRTUAL_BASE 0xfe000000 + .macro addruart, rp, rv, tmp - ldr \rp, =0x40028000 @ physical - ldr \rv, =0xfe028000 @ virtual + ldr \rp, =VF_UART_PHYSICAL_BASE @ physical + and \rv, \rp, #0xffffff @ offset within 16MB section + add \rv, \rv, #VF_UART_VIRTUAL_BASE .endm .macro senduart, rd, rx