feat(core): implement wrapper for svc_shutdown

core/SConscript.firmware

@@ -354,6 +354,8 @@ SOURCE_TREZORHAL = [
     'embed/trezorhal/vectortable.s',
 ]
 
+CPPDEFINES_MOD += ['USE_SVC_SHUTDOWN']
+
 if FEATURE_FLAGS["RDI"]:
     CPPDEFINES_MOD += ['RDI']
 

core/embed/trezorhal/common.c

@@ -25,6 +25,7 @@
 #include "display.h"
 #include "flash.h"
 #include "rand.h"
+#include "supervise.h"
 
 #include "stm32f4xx_ll_utils.h"
 
@@ -33,6 +34,18 @@ extern void shutdown_privileged(void);
 
 #define COLOR_FATAL_ERROR RGB16(0x7F, 0x00, 0x00)
 
+// from util.s
+extern void shutdown_privileged(void);
+
+void shutdown(void) {
+#ifdef USE_SVC_SHUTDOWN
+  svc_shutdown();
+#else
+  // It won't work properly unless called from the privileged mode
+  shutdown_privileged();
+#endif
+}
+
 void __attribute__((noreturn))
 __fatal_error(const char *expr, const char *msg, const char *file, int line,
               const char *func) {

core/embed/trezorhal/common.h

@@ -49,6 +49,8 @@
   })
 #endif
 
+void shutdown(void);
+
 void __attribute__((noreturn))
 __fatal_error(const char *expr, const char *msg, const char *file, int line,
               const char *func);