OPTEE is currently linked to a specific area of memory called the TrustZone DRAM. This patch adds a CONFIG entry for the default size of TrustZone DRAM that a board-port can over-ride. The region that U-Boot sets aside for the OPTEE run-time should be verified before attempting to hand off to the OPTEE run-time. Each board-port should carefully ensure that the TZDRAM size specified in the OPTEE build and the TZDRAM size specified in U-Boot match-up.
Further patches will use TZDRAM size with other defines and variables to carry out a degree of automated verification in U-Boot prior to trying to boot an OPTEE image. Signed-off-by: Bryan O'Donoghue <[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]> Tested-by: Peng Fan <[email protected]> --- lib/optee/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig index 2e406fe..41c0ab7 100644 --- a/lib/optee/Kconfig +++ b/lib/optee/Kconfig @@ -6,3 +6,11 @@ config OPTEE enable an OPTEE specific bootm command that will perform additional OPTEE specific checks before booting an OPTEE image created with mkimage. + +config OPTEE_TZDRAM_SIZE + hex "Amount of Trust-Zone RAM for the OPTEE image" + depends on OPTEE + default 0x3000000 + help + The size of pre-allocated Trust Zone DRAM to allocate for the OPTEE + runtime. -- 2.7.4 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
