From: Pali Rohár Date: Thu, 26 Feb 2015 13:49:58 +0000 (+0100) Subject: ARM: dts: n900: Enable omap sham and include directly omap34xx.dtsi X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=69540a7c277d96382257216436f41abc040cc878;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ARM: dts: n900: Enable omap sham and include directly omap34xx.dtsi This patch moves content of file omap34xx-hs.dtsi into omap3-n900.dts and enable omap sham support (omap HW support for SHA + MD5). After testing both omap hwmod and omap-sham.ko drivers it looks like signed Nokia X-Loader enable L3 firewall for omap sham. There is no kernel crash with both official bootloader and crypto enable bootloader. So we can safely enable sham code. Signed-off-by: Pali Rohár Acked-by: Pavel Machek Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index db80f9d376fa..bbea3076e1d4 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -9,9 +9,23 @@ /dts-v1/; -#include "omap34xx-hs.dtsi" +#include "omap34xx.dtsi" #include +/* + * Default secure signed bootloader (Nokia X-Loader) does not enable L3 firewall + * for omap AES HW crypto support. When linux kernel try to access memory of AES + * blocks then kernel receive "Unhandled fault: external abort on non-linefetch" + * and crash. Until somebody fix omap-aes.c and omap_hwmod_3xxx_data.c code (no + * crash anymore) omap AES support will be disabled for all Nokia N900 devices. + * There is "unofficial" version of bootloader which enables AES in L3 firewall + * but it is not widely used and to prevent kernel crash rather AES is disabled. + * There is also no runtime detection code if AES is disabled in L3 firewall... + */ +&aes { + status = "disabled"; +}; + / { model = "Nokia N900"; compatible = "nokia,omap3-n900", "ti,omap3430", "ti,omap3";