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 09B8AC35671 for ; Mon, 24 Feb 2020 12:17:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA0EE2084E for ; Mon, 24 Feb 2020 12:17:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582546664; bh=4sZ0PYKHHFjGjhnZonEyKKQjDJ4zZiNH+ld8nAMN3p8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=H6AspuMsLRTXrdY1EDZqYAu2d4m7AIx4B2aHPYdwua+sPgQUZHTy73thiIDXGQeCO qPlyXV8JRpudVzSvObeqJRDx8Xi5znVzArwxfS+EkIzmPW3c2k1GTD6UBKTk3kCFPL UopUk9Non5SqTMfA7qwUa5WkLfEEqHYwNdapp/T0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727275AbgBXMRo (ORCPT ); Mon, 24 Feb 2020 07:17:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:44228 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727185AbgBXMRo (ORCPT ); Mon, 24 Feb 2020 07:17:44 -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 444EF20866; Mon, 24 Feb 2020 12:17:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582546664; bh=4sZ0PYKHHFjGjhnZonEyKKQjDJ4zZiNH+ld8nAMN3p8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ABtroxQbAhO6jWfeqWHPUB9Aa5LO4JbUnmNLihBq1KiGRVT70/pQJeyj3keVwr/U0 pY8WrcJiW0piT3f+k3YnZrD83NwOf6jPTJhQe1j7B2dbLBzxvaU/1auHo1GPXEJRep CWh0FWUxoJGyF+pne+BEEQKGRPh81FfigtFBk2UA= 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 , Linus Walleij Subject: [PATCH v3 2/5] efi/arm: Pass start and end addresses to cache_clean_flush() Date: Mon, 24 Feb 2020 13:17:30 +0100 Message-Id: <20200224121733.2202-3-ardb@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200224121733.2202-1-ardb@kernel.org> References: <20200224121733.2202-1-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 | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 39f7071d47c7..8487221bedb0 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -1460,6 +1460,12 @@ 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 + ldr r1, =_edata @ size of zImage + add r1, r1, r0 @ end of zImage bl cache_clean_flush @ The PE/COFF loader might not have cleaned the code we are -- 2.17.1