From d89a5aa6d086e4b3242dbdbe97183f5b25468299 Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Tue, 13 Mar 2018 16:50:28 +0000 Subject: optee: Add CONFIG_OPTEE_TZDRAM_SIZE 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 Cc: Harinarayan Bhatta Cc: Andrew F. Davis Cc: Tom Rini Cc: Kever Yang Cc: Philipp Tomsich Cc: Peng Fan Tested-by: Peng Fan --- lib/optee/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'lib/optee') diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig index 2e406fe107..41c0ab71b1 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. -- cgit v1.2.3