From 6f5633761528e484e8d0963c7ac59403f7210093 Mon Sep 17 00:00:00 2001
From: Ian McIntyre <ianpmcintyre@gmail.com>
Date: Mon, 13 Mar 2023 06:50:57 -0400
Subject: Prototype API to build runtime in RAM

Just a proof-of-concept. The new inspect_elf test seems to show that
we're building the correct image. We need another commit in order to
help the program run in FlexRAM.
---
 board/Cargo.toml          | 6 ++++++
 board/build.rs            | 7 +++++++
 board/src/imxrt1010evk.rs | 2 +-
 board/src/lib.rs          | 2 +-
 4 files changed, 15 insertions(+), 2 deletions(-)

(limited to 'board')

diff --git a/board/Cargo.toml b/board/Cargo.toml
index 836230c..449b807 100644
--- a/board/Cargo.toml
+++ b/board/Cargo.toml
@@ -40,6 +40,12 @@ imxrt1010evk = [
     "dep:rtt-target",
     "dep:panic-rtt-target",
 ]
+imxrt1010evk-ram = [
+    "imxrt-ral/imxrt1011",
+    # No FCB required.
+    "dep:rtt-target",
+    "dep:panic-rtt-target",
+]
 imxrt1170evk-cm7 = [
     "imxrt-ral/imxrt1176_cm7",
     "dep:imxrt1170evk-fcb",
diff --git a/board/build.rs b/board/build.rs
index 4531667..e44a11d 100644
--- a/board/build.rs
+++ b/board/build.rs
@@ -60,6 +60,13 @@ fn main() {
                 .heap_size_env_override("BOARD_HEAP")
                 .build()
                 .unwrap(),
+            "imxrt1010evk_ram" => {
+                imxrt_rt::RuntimeBuilder::from_ram(imxrt_rt::Family::Imxrt1010)
+                    .heap_size(1024)
+                    .build()
+                    .unwrap();
+                println!("cargo:rustc-cfg=from_ram");
+            }
             _ => continue,
         }
         break;
diff --git a/board/src/imxrt1010evk.rs b/board/src/imxrt1010evk.rs
index 9a596e9..9bcf120 100644
--- a/board/src/imxrt1010evk.rs
+++ b/board/src/imxrt1010evk.rs
@@ -2,7 +2,7 @@
 
 use crate::ral;
 
-#[cfg(target_arch = "arm")]
+#[cfg(all(target_arch = "arm", not(feature = "imxrt1010evk-ram")))]
 use imxrt1010evk_fcb as _;
 #[cfg(target_arch = "arm")]
 use panic_rtt_target as _;
diff --git a/board/src/lib.rs b/board/src/lib.rs
index ebc76ad..f4912be 100644
--- a/board/src/lib.rs
+++ b/board/src/lib.rs
@@ -10,7 +10,7 @@ cfg_if::cfg_if! {
 
         mod teensy4;
         pub use teensy4::*;
-    } else if #[cfg(feature = "imxrt1010evk")] {
+    } else if #[cfg(any(feature = "imxrt1010evk", feature = "imxrt1010evk-ram"))] {
         mod shared { pub mod imxrt10xx; }
         use shared::imxrt10xx::prepare_pit;
 
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