From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D602C34050 for ; Wed, 19 Feb 2020 09:43:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BDB324677 for ; Wed, 19 Feb 2020 09:43:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582105433; bh=lFzKo6clSyD9Mf7ZXBNhtebcK98cxJK95ASmc7qCv0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=agLNz5pEr7yD2xBcYaLBf9/WRQ9ec9uW/w4e27GSCoP4DP8Y4css1QcPtARkqvekD A3f6Unhe9lLYenf/S9kVPtboUePbfot21Npj/DNwXJTFStDKFra9VDazqDAvz6NAPK zTiMVKScC5RLyjMQSAS6eApmnxoRBUxwqbruD+uU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726297AbgBSJnw (ORCPT ); Wed, 19 Feb 2020 04:43:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:56154 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726210AbgBSJnw (ORCPT ); Wed, 19 Feb 2020 04:43:52 -0500 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 Cc: linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Russell King , Marc Zyngier , Nicolas Pitre , Catalin Marinas , Tony Lindgren 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> Sender: linux-efi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.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 -- 2.17.1