o Splitting out init from main.

1 files changed, 27 insertions, 0 deletions

diff --git a/init_high.cpp b/init_high.cpp
new file mode 100644
index 0000000..235a649
--- /dev/null
+++ b/init_high.cpp
@@ -0,0 +1,27 @@
+#include <stdint.h>
+
+extern uint32_t _copy_data_load, _copy_data_store, _copy_data_store_end;
+extern uint32_t _bss_start, _bss_end;
+
+extern int main();
+extern "C" int init_high();
+
+int init_high() {
+    // Copy data from flash to ram
+    uint32_t *src = &_copy_data_load;
+    uint32_t *dest = &_copy_data_store;
+    uint32_t *end = &_copy_data_store_end;
+
+    while (dest <= end) {
+        *dest++ = *src++;
+    }
+
+    // Clear the BSS segment
+    dest = &_bss_start;
+    end = &_bss_end;
+    while (dest <= end) {
+        *dest++ = 0;
+    }
+
+    return main();
+}