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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=0PsT2BbPMJpHw0aaMFLXTlabGj9VIEwcAaDVp60JKF4=; b=GIgqgpcn6nv83KgK2BiFY1dsu0 DmliM6BIoAJ5g7ZUlH33Fg2oSVUkBxcft44Y/ISqBCWbUGLjvPpbM7WBj3DZhEjBPSx4z4mkmr3J+ H5jIZdG5N+5k1qoenbbNI2vOYRd1aKtFTm5zoqO/79bf9EHdSAcxx45uLvIkd4JF8CiDZ/8RhhoIp uipeSX17QXYPD1Y3bL+1YiObGpLRbQSiMKP9NzU9UaRSf0t6wkROYUff7HIwXvadoGeyfM3rdg9Uq dAa1WXkp5aRGCsMy00Dr3+wVLNgIFPIzvGR1WnFMZm3GHsEcpSc8g375jvco/f0wHqP/b3QX6tcLU sNnbsoDQ==; 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 1jb55a-0004ST-M0; Tue, 19 May 2020 16:27:34 +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 1jb557-000440-4T for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2020 16:27:06 +0000 Received: from e123331-lin.nice.arm.com (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 9D06A20826; Tue, 19 May 2020 16:27:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589905624; bh=Rnr1nZVVeFJ8Ie+KrJMA9hzs3cpYXGVP9cLvCfNZ5RE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BaIcUPJO0UwNNr+BifsMlE6U9axBV/4+5mSQRLZxitMW5BasAfLi6BMOcFvXiyeZE lU5+XmKS1kf/lUqb98vJFj17XHoTZi+oxWeqeu6Pwy5vgCQefBJxsIJxCaMCYqdHjx RcwN7Atuv317jS60pgcG16sHDFKsmKEN3Aw/uejU= From: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 2/5] ARM: decompressor: split off _edata and stack base into separate object Date: Tue, 19 May 2020 18:26:42 +0200 Message-Id: <20200519162645.31065-3-ardb@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200519162645.31065-1-ardb@kernel.org> References: <20200519162645.31065-1-ardb@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200519_092705_228234_F25CB644 X-CRM114-Status: GOOD ( 11.47 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.4 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_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -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: linux-efi@vger.kernel.org, Geert Uytterhoeven , Nicolas Pitre , Heinrich Schuchardt , Linus Walleij , Russell King , Ard Biesheuvel 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 of moving the handling of the LC0 object to a later stage in the decompressor startup code, move out _edata and the initial value of the stack pointer, which are needed earlier than the remaining contents of LC0. Signed-off-by: Ard Biesheuvel Reviewed-by: Geert Uytterhoeven Reviewed-by: Nicolas Pitre --- arch/arm/boot/compressed/head.S | 23 ++++++++++---------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 42b8d67beab6..5d712e2c0001 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -293,22 +293,20 @@ not_angel: orrcc r4, r4, #1 @ remember we skipped cache_on blcs cache_on -restart: adr r0, LC0 - ldmia r0, {r1, r2, r3, r6, r11, r12} - ldr sp, [r0, #24] +restart: adr r0, LC1 + ldr sp, [r0] + ldr r6, [r0, #4] + add sp, sp, r0 + add r6, r6, r0 - /* - * We might be running at a different address. We need - * to fix up various pointers. - */ + adr r0, LC0 + ldmia r0, {r1, r2, r3, r11, r12} sub r0, r0, r1 @ calculate the delta offset - add r6, r6, r0 @ _edata get_inflated_image_size r9, r10, lr #ifndef CONFIG_ZBOOT_ROM /* malloc space is above the relocated stack (64k max) */ - add sp, sp, r0 add r10, sp, #0x10000 #else /* @@ -660,12 +658,15 @@ not_relocated: mov r0, #0 LC0: .word LC0 @ r1 .word __bss_start @ r2 .word _end @ r3 - .word _edata @ r6 .word _got_start @ r11 .word _got_end @ ip - .word .L_user_stack_end @ sp .size LC0, . - LC0 + .type LC1, #object +LC1: .word .L_user_stack_end - LC1 @ sp + .word _edata - LC1 @ r6 + .size LC1, . - LC1 + .Lheadroom: .word _end - restart + 16384 + 1024*1024