From 21eaf258c1decab6415259a853072dabd999ae38 Mon Sep 17 00:00:00 2001
From: Stefan <stefan@pimaker.at>
Date: Tue, 17 Aug 2021 09:50:08 +0200
Subject: [PATCH] update rust_payload

---
 rust_payload/src/low_level/opensbi.rs | 12 ++++++------
 rust_payload/src/main.rs              |  5 ++++-
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/rust_payload/src/low_level/opensbi.rs b/rust_payload/src/low_level/opensbi.rs
index 48775ed7..8e841998 100644
--- a/rust_payload/src/low_level/opensbi.rs
+++ b/rust_payload/src/low_level/opensbi.rs
@@ -45,12 +45,12 @@ fn print_hex_part(u: u8) {
         7 => print("7"),
         8 => print("8"),
         9 => print("9"),
-        10 => print("A"),
-        11 => print("B"),
-        12 => print("C"),
-        13 => print("D"),
-        14 => print("E"),
-        15 => print("F"),
+        10 => print("a"),
+        11 => print("b"),
+        12 => print("c"),
+        13 => print("d"),
+        14 => print("e"),
+        15 => print("f"),
         _ => unreachable!(),
     }
 }
diff --git a/rust_payload/src/main.rs b/rust_payload/src/main.rs
index 63966d9c..37c90123 100644
--- a/rust_payload/src/main.rs
+++ b/rust_payload/src/main.rs
@@ -38,7 +38,10 @@ pub fn main() -> ! {
     print_usize(register::time::read());
     print("\n");
 
-    println("Tests done, entering infinite loop!");
+    println("Exiting via 'tohost' ecall...");
+    ecall(93 /* tohost */, 0 /* exit code */, 0, 0);
+
+    println("ecall failed (?), entering infinite loop!");
     loop {}
 }