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optee: Add CONFIG_OPTEE_TZDRAM_SIZE

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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 <bryan.odonoghue@linaro.org>
Cc: Harinarayan Bhatta <harinarayan@ti.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Peng Fan <peng.fan@nxp.com>
Tested-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Bryan O'Donoghue 2018-03-13 16:50:28 +00:00 committed by Tom Rini
parent 32ce6179fb
commit d89a5aa6d0
1 changed files with 8 additions and 0 deletions
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8
lib/optee/Kconfig
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@ -6,3 +6,11 @@ config OPTEE
enable an OPTEE specific bootm command that will perform additional enable an OPTEE specific bootm command that will perform additional
OPTEE specific checks before booting an OPTEE image created with OPTEE specific checks before booting an OPTEE image created with
mkimage. 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.