From patchwork Wed Feb 19 09:43:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 11390823 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 58EAB138D for ; Wed, 19 Feb 2020 09:44:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D4D12465D for ; Wed, 19 Feb 2020 09:44:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KvzhoKx9"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="F9Q+7DQ1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D4D12465D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=8IvLRb37gLzeBc9lblsJWNXBE7Q8VWxOeyFW+Ig70CA=; b=KvzhoKx9lH3ZlLTEh/IsjKYdEa bKSjtyUN5+w3DzgrGhPztuZAdBnAJjZ0iPIB4YaL5xIWAN7eODm9T1LN1HoSWamWExRcpbobtufE2 aNo0KAWjwViLu+G2rzZoKSJIQ9wsBJEZodd9yx9BzyvLpSEd/Y4mg1/xKFqsEcBeeP0PLoCVbQkyX X1/0Ze1qkTSsiYbwNmWgSTcwnuvZy5uLPYv/H6LYa5TKsUMb4hjW31LS1I36jMJZA1AaAh+qENTq6 7w0Yez8KItlmUGrfQiI81ivIVEq+UZluvRQjuTR3rGaX1NwV1jD0wq4NgXWrFo38Sk0s2HBJJoyg4 6LjB9b1w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4Lu1-0002K8-0h; Wed, 19 Feb 2020 09:44:21 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4LtY-0001wG-Nq for linux-arm-kernel@lists.infradead.org; Wed, 19 Feb 2020 09:43:54 +0000 Received: from e123331-lin.home (amontpellier-657-1-18-247.w109-210.abo.wanadoo.fr [109.210.65.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D563F24673; Wed, 19 Feb 2020 09:43:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582105432; bh=lFzKo6clSyD9Mf7ZXBNhtebcK98cxJK95ASmc7qCv0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F9Q+7DQ1awwTlQX09DLd8nNQb5ZjSnu+WpmzHjy4nZvjaCi2xkMZtt9CQZ/iInqdf LMjgojxE/VsHoeND4tW+uiVOZAL7IRCXt+nv42rA4apeUiqN4v09RaoOLOHU8AS90H 0gl4230tZ79ryLkkvlJNmq9Fv7pIhI3GYZGyJFPE= From: Ard Biesheuvel To: linux-efi@vger.kernel.org Subject: [PATCH v2 2/4] efi/arm: pass start and end addresses to cache_clean_flush() Date: Wed, 19 Feb 2020 10:43:38 +0100 Message-Id: <20200219094340.16597-3-ardb@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200219094340.16597-1-ardb@kernel.org> References: <20200219094340.16597-1-ardb@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200219_014352_793304_60D80F1C X-CRM114-Status: UNSURE ( 9.47 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicolas Pitre , Tony Lindgren , Marc Zyngier , Russell King , Catalin Marinas , Ard Biesheuvel , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org In preparation for turning the decompressor's cache clean/flush operations into proper by-VA maintenance for v7 cores, pass the start and end addresses of the regions that need cache maintenance into cache_clean_flush in registers r0 and r1. Currently, all implementations of cache_clean_flush ignore these values, so no functional change is expected as a result of this patch. Signed-off-by: Ard Biesheuvel --- arch/arm/boot/compressed/head.S | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 6c98d3d2de2f..c11b1b0a3ac6 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -1460,6 +1460,13 @@ ENTRY(efi_stub_entry) @ Preserve return value of efi_entry() in r4 mov r4, r0 + add r1, r4, #SZ_2M @ DT end + bl cache_clean_flush + + ldr r0, [sp] @ relocated zImage + adr r2, __edata + ldr r1, [r2] + add r1, r1, r2 @ end of image bl cache_clean_flush @ The PE/COFF loader might not have cleaned the code we are @@ -1489,6 +1496,8 @@ efi_load_fail: ldr r0, =0x80000001 ldmfd sp!, {ip, pc} ENDPROC(efi_stub_entry) + .align 2 +__edata: .long _edata - . #endif .align