optee: adjust dependencies and default values for dram

We may have, the not yet considered, scenario where OPTEE is loaded before
u-boot and *not* by u-boot, e.g, the boot flow using the ARM Trusted
Firmware (ATF), where in the 32bit flow is:
BootRom->ATF(BL2)->Optee(BL32)->u-boot(BL33)

In this case we need still to reserve the memory used by optee, to avoid
for example to realocate ourself to the same address at the end of DRAM.
So, we change here the dependencies on the OPTEE lib and we set the default
size and base of TZRAM to zero.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Ryan Harkin <ryan.harkin@linaro.org>
Cc: u-boot@lists.denx.de

diff --git a/configs/warp7_defconfig b/configs/warp7_defconfig
index 15a6673..a1c0b69 100644 (file)
--- a/configs/warp7_defconfig
+++ b/configs/warp7_defconfig
@@ -46,5 +46,7 @@ CONFIG_USB_ETH_CDC=y
 CONFIG_USBNET_HOST_ADDR="de:ad:be:af:00:00"
 CONFIG_OF_LIBFDT=y
 CONFIG_OPTEE=y
+CONFIG_OPTEE_TZDRAM_SIZE=0x3000000
+CONFIG_OPTEE_TZDRAM_BASE=0x9d000000
 CONFIG_OPTEE_LOAD_ADDR=0x84000000
 CONFIG_BOOTM_OPTEE=y

diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig
index 1e5ab45..3773d89 100644 (file)
--- a/lib/optee/Kconfig
+++ b/lib/optee/Kconfig
@@ -10,21 +10,20 @@ config OPTEE
 config OPTEE_LOAD_ADDR
        hex "OPTEE load address"
        default 0x00000000
+       depends on OPTEE
        help
          The load address of the bootable OPTEE binary.
 
 config OPTEE_TZDRAM_SIZE
        hex "Amount of Trust-Zone RAM for the OPTEE image"
-       depends on OPTEE
-       default 0x3000000
+       default 0x0000000
        help
          The size of pre-allocated Trust Zone DRAM to allocate for the OPTEE
          runtime.
 
 config OPTEE_TZDRAM_BASE
        hex "Base address of Trust-Zone RAM for the OPTEE image"
-       depends on OPTEE
-       default 0x9d000000
+       default 0x00000000
        help
          The base address of pre-allocated Trust Zone DRAM for
          the OPTEE runtime.
@@ -32,6 +31,7 @@ config OPTEE_TZDRAM_BASE
 config BOOTM_OPTEE
        bool "Support OPTEE bootm command"
        select BOOTM_LINUX
+       depends on OPTEE
        default n
        help
          Select this command to enable chain-loading of a Linux kernel