diff options
| author | Pali Rohár <pali.rohar@gmail.com> | 2015-02-26 14:49:58 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2015-03-19 09:26:21 -0700 |
| commit | 69540a7c277d96382257216436f41abc040cc878 (patch) | |
| tree | 2bb5b11c9292de6ab0fe42e83d4ff0a098bee12b /arch/arm/boot/dts/omap3-n900.dts | |
| parent | a494e32d3a4fc8852da78b8fc8392aab77f998ba (diff) | |
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 <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/omap3-n900.dts')
| -rw-r--r-- | arch/arm/boot/dts/omap3-n900.dts | 16 |
1 files changed, 15 insertions, 1 deletions
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 <dt-bindings/input/input.h> +/* + * 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"; |