[U-Boot] [PATCH 3/3][v3] [RESEND] arm: ls1046ardb: Add SD secure boot target

[york sun]

On 03/29/2017 07:21 AM, Ruchika Gupta wrote:
> From: Vinitha Pillai-B57223 <vinitha.pillai at nxp.com>
>
> - Add SD secure boot target for ls1046ardb.
> - Implement board specific spl_board_init() to setup CAAM stream ID and
>   corresponding stream ID in SMMU.
> - Change the u-boot size defined by a macro for copying the main U-Boot by SPL
>   to also include the u-boot Secure Boot header size as header is appended to
>   u-boot image. So header will also be copied from SD to DDR.
> - CONFIG_MAX_SPL_SIZE is limited to 90K.SPL is copied to OCRAM (128K) where 32K
>   are reserved for use by boot ROM and 6K for the header
> - Reduce the size of CAAM driver for SPL. Since the size of spl image
>   was about 94K, Blobification functions and descriptors, that are not required
>   at the time of SPL are disabled. Further error code conversion to strings
>   is disabled for SPL build. This reduces the spl image size to 92K.
>
> Signed-off-by: Vinitha Pillai <vinitha.pillai at nxp.com>
> Signed-off-by: Sumit Garg <sumit.garg at nxp.com>
> Signed-off-by: Ruchika Gupta <ruchika.gupta at nxp.com>
> ---
> Changes from v1:
> - Rebased patches to latest dependent patch set
> - With the dependent path set , spl imag size increased to 94K. So
> - additionally  reduce the spl image size by removing the functions from
> - CAAM driver that are not required in SPL flow
>

<snip>

> +#if defined(CONFIG_SPL_BUILD)
> +void spl_board_init(void)
> +{
> +#ifdef CONFIG_SECURE_BOOT
> +	/*
> +	 * In case of Secure Boot, the IBR configures the SMMU
> +	 * to allow only Secure transactions.
> +	 * SMMU must be reset in bypass mode.
> +	 * Set the ClientPD bit and Clear the USFCFG Bit
> +	*/
> +	u32 val;
> +	val = (in_le32(SMMU_SCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
> +	out_le32(SMMU_SCR0, val);
> +	val = (in_le32(SMMU_NSCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
> +	out_le32(SMMU_NSCR0, val);
> +#endif
> +}

Is this the same as LS1043A? Can we move this function to 
arch/arm/cpu/armv8/fsl-layerscape/spl.c?

York