From patchwork Tue Nov 22 09:26:08 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Murzin X-Patchwork-Id: 9440679 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2C78A60235 for ; Tue, 22 Nov 2016 09:42:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E017284AF for ; Tue, 22 Nov 2016 09:42:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1E746284B5; Tue, 22 Nov 2016 09:42:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 093CE284AF for ; Tue, 22 Nov 2016 09:42:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c97aK-0004MU-DK; Tue, 22 Nov 2016 09:41:52 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c97MZ-0006F5-QM for linux-arm-kernel@lists.infradead.org; Tue, 22 Nov 2016 09:27:46 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B88191682; Tue, 22 Nov 2016 01:27:07 -0800 (PST) Received: from login2.euhpc.arm.com (login2.euhpc.arm.com [10.6.26.144]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 933823F483; Tue, 22 Nov 2016 01:27:06 -0800 (PST) From: Vladimir Murzin To: linux-arm-kernel@lists.infradead.org Subject: [RFC PATCH 11/11] ARM: Allow ARCH_MULTIPLATFORM to be selected for NOMMU Date: Tue, 22 Nov 2016 09:26:08 +0000 Message-Id: <1479806768-39911-12-git-send-email-vladimir.murzin@arm.com> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1479806768-39911-1-git-send-email-vladimir.murzin@arm.com> References: <1479806768-39911-1-git-send-email-vladimir.murzin@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161122_012740_261645_3BE062BB X-CRM114-Status: UNSURE ( 8.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ryan Mallon , arnd@arndb.de, Tony Lindgren , Russell King , Hartley Sweeten , Thierry Reding MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP With this patch applied potentially any platform can be built in NOMMU configurations if CONFIG_EXPERT is selected. However, there is no guaranty that platform can successfully run such Image. So the main motivation behind of this patch: - bring build coverage for NOMMU configurations - allow known working NOMMU platforms (like R-class) to be used - pave a way to add support for single address space (aka 1:1 mapping) for MMU platforms, so they can be usable in NOMMU configurations Cc: Hartley Sweeten Cc: Ryan Mallon Cc: Tony Lindgren Cc: Thierry Reding Cc: Russell King Signed-off-by: Vladimir Murzin --- arch/arm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index f9ff570..8e7496c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -327,9 +327,9 @@ choice config ARCH_MULTIPLATFORM bool "Allow multiple platforms to be selected" - depends on MMU + depends on MMU || EXPERT select ARM_HAS_SG_CHAIN - select ARM_PATCH_PHYS_VIRT + select ARM_PATCH_PHYS_VIRT if MMU select AUTO_ZRELADDR select CLKSRC_OF select COMMON_CLK