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.
---
 src/host.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src')

diff --git a/src/host.rs b/src/host.rs
index 6a01f9d..56a9d0f 100644
--- a/src/host.rs
+++ b/src/host.rs
@@ -401,6 +401,27 @@ impl RuntimeBuilder {
             linker_script_name: DEFAULT_LINKER_SCRIPT_NAME.into(),
         }
     }
+
+    /// Create a runtime that executes from RAM.
+    pub fn from_ram(family: Family) -> Self {
+        Self {
+            family,
+            flexram_banks: family.default_flexram_banks(),
+            text: Memory::Itcm,
+            rodata: Memory::Ocram,
+            data: Memory::Ocram,
+            vectors: Memory::Dtcm,
+            bss: Memory::Ocram,
+            uninit: Memory::Ocram,
+            stack: Memory::Dtcm,
+            stack_size: EnvOverride::new(8 * 1024),
+            heap: Memory::Dtcm,
+            heap_size: EnvOverride::new(0),
+            flash_opts: None,
+            linker_script_name: DEFAULT_LINKER_SCRIPT_NAME.into(),
+        }
+    }
+
     /// Set the FlexRAM bank allocation.
     ///
     /// Use this to customize the sizes of DTCM, ITCM, and OCRAM.
-- 
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