commit 8a4e23bb6b3402f656c94d090de437d387e76d73
author David Brown <david.brown@linaro.org> Fri Jun 11 10:29:01 2021 -0600
committer David Brown <davidb@davidb.org> Mon Jul 19 11:22:13 2021 -0600
tree 1b3b006a1291447317a9fe3b8e93ed03e39786e1
parent 0dfb810d36d82ed4cdd37aaabd340eb0edc93ecf

sim: Basic ram-load test

Test the basic configuration for ram loading.  Instead of a fixed
address for RAM, the values come dynamically from a thread-local
variable (allowing the tests to run in parallel).  The size of the ram
along with the address of the buffer in the test address space are
passed in this way.

This tests the single-image configurations of ram loading.  Testing
multi-image will take additional work, as the RAM will need to be large
enough for both images, and the second image will need a meaningful
offset address in RAM.

Signed-off-by: David Brown <david.brown@linaro.org>

sim/src/tlv.rs

diff --git a/sim/src/tlv.rs b/sim/src/tlv.rs
index 8ccdb0a..a642446 100644
--- a/sim/src/tlv.rs
+++ b/sim/src/tlv.rs
@@ -17,6 +17,7 @@
 use byteorder::{
     LittleEndian, WriteBytesExt,
 };
+use crate::caps::Caps;
 use crate::image::ImageVersion;
 use log::info;
 use ring::{digest, rand, agreement, hkdf, hmac};
@@ -295,7 +296,12 @@
 
     /// Retrieve the header flags for this configuration.  This can be called at any time.
     fn get_flags(&self) -> u32 {
-        self.flags
+        // For the RamLoad case, add in the flag for this feature.
+        if Caps::RamLoad.present() {
+            self.flags | (TlvFlags::RAM_LOAD as u32)
+        } else {
+            self.flags
+        }
     }
 
     /// Add bytes to the covered hash.