From d9bd42389f26a82c9d8f18181609f8c7e49fd253 Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Thu, 18 Jun 2020 20:14:02 +0200
Subject: [PATCH] kernel: flush now write-buffered dcache of image before
 execution

---
 src/libdyld/src/image.rs  | 2 +-
 src/libdyld/src/lib.rs    | 2 +-
 src/runtime/src/kernel.rs | 6 +++++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/libdyld/src/image.rs b/src/libdyld/src/image.rs
index 3f76bd09..87fa665d 100644
--- a/src/libdyld/src/image.rs
+++ b/src/libdyld/src/image.rs
@@ -23,7 +23,7 @@ pub struct DynamicSection {
 /// target memory image
 pub struct Image {
     layout: Layout,
-    data: &'static mut [u8],
+    pub data: &'static mut [u8],
 }
 
 impl Image {
diff --git a/src/libdyld/src/lib.rs b/src/libdyld/src/lib.rs
index 698b058c..2103bbee 100644
--- a/src/libdyld/src/lib.rs
+++ b/src/libdyld/src/lib.rs
@@ -58,7 +58,7 @@ fn elf_hash(name: &[u8]) -> u32 {
 }
 
 pub struct Library {
-    image: Image,
+    pub image: Image,
     dyn_section: DynamicSection,
 }
 
diff --git a/src/runtime/src/kernel.rs b/src/runtime/src/kernel.rs
index 5e97ea9e..a590b1e5 100644
--- a/src/runtime/src/kernel.rs
+++ b/src/runtime/src/kernel.rs
@@ -3,7 +3,7 @@ use log::{debug, error};
 use alloc::{vec::Vec, sync::Arc};
 use cslice::CSlice;
 
-use libcortex_a9::{mutex::Mutex, sync_channel::{self, sync_channel}};
+use libcortex_a9::{cache::dcci_slice, mutex::Mutex, sync_channel::{self, sync_channel}};
 use libsupport_zynq::boot::Core1;
 
 use dyld;
@@ -313,6 +313,10 @@ pub fn main_core1() {
                         current_modinit = Some(__modinit__);
                         current_typeinfo = library.lookup(b"typeinfo");
                         debug!("kernel loaded");
+                        // Flush data cache entries for the image in DDR, including
+                        // Memory/Instruction Symchronization Barriers
+                        dcci_slice(library.image.data);
+
                         core1_tx.send(Message::LoadCompleted);
                     },
                     Err(error) => {