pvmfw: Perform DICE derivation
Integrate DICE derivation into pvmfw and fail if the operation fails.
Note that we still need to get the salt ("hidden" DICE input) from the
instance.img or TRNG and pass the result to the next stage.
Bug: 256827715
Test: atest MicrodroidHostTests
Change-Id: Ibebaf526fd6055b9d05ce6017b560fb8814471e5
diff --git a/pvmfw/src/helpers.rs b/pvmfw/src/helpers.rs
index e8a20a8..ad980f5 100644
--- a/pvmfw/src/helpers.rs
+++ b/pvmfw/src/helpers.rs
@@ -20,6 +20,8 @@
pub const SIZE_4KB: usize = 4 << 10;
pub const SIZE_2MB: usize = 2 << 20;
+pub const GUEST_PAGE_SIZE: usize = SIZE_4KB;
+
/// Computes the largest multiple of the provided alignment smaller or equal to the address.
///
/// Note: the result is undefined if alignment isn't a power of two.