[PATCH 29/29] bloblist: Allow relocation at the end of the SPL phase

[Tom Rini]

On Tue, Feb 04, 2025 at 06:55:19PM -0700, Simon Glass wrote:

> Where the bloblist is located in internal memory and TF-A's BL31 blob
> removes access to this memory, the best option seems to be to relocate
> the bloblist just before running TF-A.
> 
> Add an option to select this behaviour and provide a relocation address.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
>  common/Kconfig    | 20 ++++++++++++++++++++
>  common/bloblist.c | 15 ++++++++++++++-
>  common/spl/spl.c  |  9 +++++++++
>  3 files changed, 43 insertions(+), 1 deletion(-)
> 
> diff --git a/common/Kconfig b/common/Kconfig
> index 0e8c44f3f74..962e7fd76eb 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -1125,6 +1125,26 @@ config SPL_BLOBLIST_ALLOC
>  
>  endchoice
>  
> +config SPL_BLOBLIST_RELOC
> +	bool "Relocate the bloblist before existing SPL"
> +	depends on BLOBLIST_FIXED
> +	help
> +	  Some platforms locate the bloblist in SRAM in SPL. In some cases,
> +	  the TF-A BL31 blob removes access to SRAM, e.g. with Rockchip RK3399.
> +
> +	  Enable this option to make U-Boot copy the bloblist from SRAM to SDRAM
> +	  before leaving SPL.

Isn't this because TF-A is (re?-)initializing SDRAM? I'll let one of the
Rockchip people chime in here, thanks.

-- 
Tom
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