[U-Boot] [PATCH][v2] ARMv8/sec_firmware : Update chosen/kaslr-seed with random number

[Tom Rini]

On Fri, Jul 28, 2017 at 10:03:12PM +0530, Ruchika Gupta wrote:

> kASLR support in kernel requires a random number to be passed via
> chosen/kaslr-seed propert. sec_firmware generates this random seed
> which can then be passed in the device tree node.
> 
> sec_firmware reserves JR3 for it's own usage. Node for JR3 is
> removed from device-tree.
> 
> Signed-off-by: Ruchika Gupta <ruchika.gupta at nxp.com>
> ---
> Changes from v1
> - Extra spaces removed from the patch
> - Support added for LSCH3 devices in the patch
> - of calls replaced with fdt calls to remove compilation error with latest uboot
> 
>  arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 75 +++++++++++++++++++++++++++++--
>  arch/arm/cpu/armv8/sec_firmware.c         | 53 ++++++++++++++++++++++
>  arch/arm/include/asm/armv8/sec_firmware.h |  8 ++++
>  3 files changed, 133 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> index f5f4840..8a21583 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> @@ -345,11 +345,78 @@ static void fdt_fixup_msi(void *blob)
>  }
>  #endif
>  
> +int fdt_fixup_kaslr(void *fdt)
> +{

This looks like common, non-layerscape specific code to me, so it should
be in sec_firmware.c so other platforms can set the property as well.

-- 
Tom
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