[v8,6/7] ARM: tegra: Always boot CPU in ARM-mode

Message ID	20190228145937.27725-7-digetx@gmail.com
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Headers	show Return-Path: <linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org> From: Dmitry Osipenko <digetx@gmail.com> To: Russell King <linux@armlinux.org.uk>, Thierry Reding <thierry.reding@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Robert Yang <decatf@gmail.com>, =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= <mirq-linux@rere.qmqm.pl> Subject: [PATCH v8 6/7] ARM: tegra: Always boot CPU in ARM-mode Date: Thu, 28 Feb 2019 17:59:36 +0300 Message-Id: <20190228145937.27725-7-digetx@gmail.com> In-Reply-To: <20190228145937.27725-1-digetx@gmail.com> References: <20190228145937.27725-1-digetx@gmail.com> MIME-Version: 1.0 summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:144 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (digetx[at]gmail.com) -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Precedence: list Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org
Series	Support Trusted Foundations firmware on Tegra30 \| expand [v8,0/7] Support Trusted Foundations firmware on Tegra30 [v8,1/7] ARM: trusted_foundations: Support L2 cache maintenance [v8,2/7] ARM: trusted_foundations: Make prepare_idle call to take mode argument [v8,3/7] ARM: trusted_foundations: Provide information about whether firmware is registered [v8,4/7] ARM: tegra: Set up L2 cache using Trusted Foundations firmware [v8,5/7] ARM: tegra: Don't apply CPU erratas in insecure mode [v8,6/7] ARM: tegra: Always boot CPU in ARM-mode [v8,7/7] ARM: tegra: Add firmware calls required for suspend-resume on Tegra30

Message ID

20190228145937.27725-7-digetx@gmail.com

State

New

Headers

From: Dmitry Osipenko <digetx@gmail.com>
To: Russell King <linux@armlinux.org.uk>, Thierry Reding
	<thierry.reding@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>,
	Robert Yang <decatf@gmail.com>, =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?=
	<mirq-linux@rere.qmqm.pl>
Subject: [PATCH v8 6/7] ARM: tegra: Always boot CPU in ARM-mode
Date: Thu, 28 Feb 2019 17:59:36 +0300
Message-Id: <20190228145937.27725-7-digetx@gmail.com>
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References: <20190228145937.27725-1-digetx@gmail.com>
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Series

Support Trusted Foundations firmware on Tegra30 | expand

Commit Message

Dmitry Osipenko Feb. 28, 2019, 2:59 p.m. UTC

CPU always jumps into reset handler in ARM-mode from the Trusted
Foundations firmware, hence let's make CPU to always jump into kernel
in ARM-mode regardless of the firmware presence. This is required to
make Thumb-2 kernel working with the Trusted Foundations firmware on
Tegra30.

Tested-by: Robert Yang <decatf@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/reset-handler.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
index 6bea95d165fa..3bf202819534 100644
--- a/arch/arm/mach-tegra/reset-handler.S
+++ b/arch/arm/mach-tegra/reset-handler.S
@@ -113,6 +113,7 @@  ENTRY(__tegra_cpu_reset_handler_start)
  *       must be position-independent.
  */
 
+	.arm
 	.align L1_CACHE_SHIFT
 ENTRY(__tegra_cpu_reset_handler)

[v8,6/7] ARM: tegra: Always boot CPU in ARM-mode

Commit Message

Patch