Initialize heap, increase stack size

fusee/fusee-secondary/src/main.c

@@ -14,6 +14,14 @@ char g_bct0[0x8000];
 /* Allow for main(int argc, void **argv) signature. */
 #pragma GCC diagnostic ignored "-Wmain"
 
+void __init_heap(void) {
+    extern char* fake_heap_start;
+    extern char* fake_heap_end;
+
+    fake_heap_start = (char*)0xF0000000;
+    fake_heap_end   = (char*)0xFFF00000;
+}
+
 int main(int argc, void **argv) {
     stage2_args_t args = {0};
     loader_ctx_t *loader_ctx = get_loader_ctx();

fusee/fusee-secondary/src/start.s

@@ -33,7 +33,7 @@ _start:
 
     _relocation_loop_end:
     /* Set the stack pointer */
-    ldr sp, =0x40008000
+    ldr sp, =0x40010000
     mov fp, #0
     stmfd sp!, {r0, r1}
 
@@ -44,6 +44,9 @@ _start:
     sub r2, r2, r0
     bl  memset
 
+    /* Initialize the heap */
+    bl  __init_heap
+
     /* Call global constructors */
     bl  __libc_init_array