pvmfw: Obtain entropy through the SMCCC TRNG
Implement a driver for the SMCCC TRNG and use it to generate the DICE
salt and AEAD nonce.
Bug: 262393451
Test: atest MicrodroidHostTests
Change-Id: Ie85e9196760779d665511bc0c9a2719d00a5eb81
diff --git a/pvmfw/src/smccc.rs b/pvmfw/src/smccc.rs
index f92c076..ccf2680 100644
--- a/pvmfw/src/smccc.rs
+++ b/pvmfw/src/smccc.rs
@@ -16,7 +16,7 @@
// TODO(b/245889995): use psci-0.1.1 crate
#[inline(always)]
-fn hvc64(function: u32, args: [u64; 17]) -> [u64; 18] {
+pub fn hvc64(function: u32, args: [u64; 17]) -> [u64; 18] {
#[cfg(target_arch = "aarch64")]
unsafe {
let mut ret = [0; 18];