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 <[email protected]> > Suggested-by: Andrew F. Davis <[email protected]> > Cc: Harinarayan Bhatta <[email protected]> > Cc: Andrew F. Davis <[email protected]> > Cc: Tom Rini <[email protected]> > Cc: Kever Yang <[email protected]> > Cc: Philipp Tomsich <[email protected]> > Cc: Peng Fan <[email protected]> > Link: http://mrvan.github.io/optee-imx6ul
Applied to u-boot/master, thanks! -- Tom
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