[U-Boot,v6,03/10] optee: Add CONFIG_OPTEE_TZDRAM_BASE

Message ID 1520959836-16105-4-git-send-email-bryan.odonoghue@linaro.org
State New
Delegated to: Tom Rini
Headers show
  • Add new OPTEE bootm support to u-boot
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Commit Message

Bryan O'Donoghue March 13, 2018, 4:50 p.m.
OPTEE is currently linked to a specific area of memory called the TrustZone
DRAM. This patch adds a CONFIG entry for the default address 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
address specified in the OPTEE build and the TZDRAM address specified in
U-Boot match-up.

Further patches will use TZDRAM address 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>
 lib/optee/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)


diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig
index 41c0ab7..a3b7332 100644
--- a/lib/optee/Kconfig
+++ b/lib/optee/Kconfig
@@ -14,3 +14,11 @@  config OPTEE_TZDRAM_SIZE
 	  The size of pre-allocated Trust Zone DRAM to allocate for the OPTEE
+	hex "Base address of Trust-Zone RAM for the OPTEE image"
+	depends on OPTEE
+	default 0x9d000000
+	help
+	  The base address of pre-allocated Trust Zone DRAM for
+	  the OPTEE runtime.