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 and 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.odonog...@linaro.org>
Cc: Harinarayan Bhatta <harinara...@ti.com>
Cc: Andrew F. Davis <a...@ti.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: Kever Yang <kever.y...@rock-chips.com>
Cc: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
Cc: Peng Fan <peng....@nxp.com>
---
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
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