optee-os: Use software RNG on AM62x and J721s2

The TRNG driver is not currently functional for these two platforms.
Disable the TRNG driver until fixed.

Reported-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Praneeth Bajjuri <praneeth@ti.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>
Signed-off-by: Denys Dmytriyenko <denys@konsulko.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/meta-ti-bsp/recipes-security/optee/optee-os_%.bbappend b/meta-ti-bsp/recipes-security/optee/optee-os_%.bbappend
index 60e8c391..5d50a04f 100644
--- a/meta-ti-bsp/recipes-security/optee/optee-os_%.bbappend
+++ b/meta-ti-bsp/recipes-security/optee/optee-os_%.bbappend
@@ -5,6 +5,9 @@ DEPENDS:append:ti-soc = " python3-cryptography-native"
 
 EXTRA_OEMAKE:append:k3 = "${@ ' CFG_CONSOLE_UART='+ d.getVar('OPTEE_K3_USART') if d.getVar('OPTEE_K3_USART') else ''}"
 
+EXTRA_OEMAKE:append:am62xx = " CFG_WITH_SOFTWARE_PRNG=y"
+EXTRA_OEMAKE:append:j721s2 = " CFG_WITH_SOFTWARE_PRNG=y"
+
 do_compile:prepend:ti-soc() {
     export TI_SECURE_DEV_PKG=${TI_SECURE_DEV_PKG}
 }