Move source files to src/, add Makefile, fix all build and linkage errors, etc.

exosphere/src/warmboot_init.c

@@ -0,0 +1,16 @@
+#include "utils.h"
+#include "memory_map.h"
+
+uintptr_t get_warmboot_crt0_stack_address(void);
+
+void flush_dcache_all_tzram_pa(void) {
+    /* TODO */
+}
+
+void invalidate_icache_all_tzram_pa(void) {
+    /* TODO */
+}
+
+uintptr_t get_warmboot_crt0_stack_address(void) {
+    return tzram_get_segment_pa(TZRAM_SEGMENT_ID_CORE3_STACK) + 0x800;
+}