[U-Boot] [U-Boot, v6, 09/10] image: Add IH_OS_TEE for TEE chain-load boot

[Tom Rini]

On Tue, Mar 13, 2018 at 04:50:35PM +0000, Bryan O'Donoghue wrote:

> This patch adds a new type IH_OS_TEE. This new OS type will be used for
> chain-loading to Linux via a TEE.
> 
> With this patch in-place you can generate a bootable OPTEE image like this:
> 
> mkimage -A arm -T kernel -O tee -C none -d tee.bin uTee.optee
> 
> where "tee.bin" is the input binary prefixed with an OPTEE header and
> uTee.optee is the output prefixed with a u-boot wrapper header.
> 
> This image type "-T kernel -O tee" is differentiated from the existing
> IH_TYPE_TEE "-T tee" in that the IH_TYPE is installed by u-boot (flow
> control returns to u-boot) whereas for the new IH_OS_TEE control passes to
> the OPTEE firmware and the firmware chainloads onto Linux.
> 
> Andrew Davis gave the following ASCII diagram:
> 
> IH_OS_TEE: (mkimage -T kernel -O tee)
> Non-Secure       Secure
> 
>                  BootROM
>                    |
>       -------------
>      |
>      v
>     SPL
>      |
>      v
>    U-Boot ------>
>           <-----  OP-TEE
>       |
>       V
>     Linux
> 
> IH_TYPE_TEE: (mkimage -T tee)
> Non-Secure       Secure
> 
>                  BootROM
>                    |
>       -------------
>      |
>      v
>     SPL ------->
>          <-----  OP-TEE
>      |
>      v
>    U-Boot
>       |
>       V
>     Linux
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
> Suggested-by: Andrew F. Davis <afd at ti.com>
> Cc: Harinarayan Bhatta <harinarayan at ti.com>
> Cc: Andrew F. Davis <afd at ti.com>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: Kever Yang <kever.yang at rock-chips.com>
> Cc: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Cc: Peng Fan <peng.fan at nxp.com>
> Link: http://mrvan.github.io/optee-imx6ul

Applied to u-boot/master, thanks!

-- 
Tom
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