refactor(core): stop using shutdown_privileged directly

[no changelog]

core/embed/sec/random_delays/stm32/random_delays.c

@@ -29,9 +29,6 @@
 
 #ifdef KERNEL_MODE
 
-// from util.s
-extern void shutdown_privileged(void);
-
 #define DRBG_RESEED_INTERVAL_CALLS 1000
 #define DRBG_TRNG_ENTROPY_LENGTH 50
 _Static_assert(CHACHA_DRBG_OPTIMAL_RESEED_LENGTH(1) == DRBG_TRNG_ENTROPY_LENGTH,
@@ -192,14 +189,14 @@ void wait_random(void) {
   volatile int j = wait;
   while (i < wait) {
     if (i + j != wait) {
-      shutdown_privileged();
+      error_shutdown("(glitch)");
     }
     ++i;
     --j;
   }
   // Double-check loop completion.
   if (i != wait || j != 0) {
-    shutdown_privileged();
+    error_shutdown("(glitch)");
   }
 #endif
 }

core/embed/sys/pvd/stm32/pvd.c

@@ -56,9 +56,7 @@ void PVD_IRQHandler(void) {
   // Turn off display backlight
   BACKLIGHT_PWM_TIM->BACKLIGHT_PWM_TIM_CCR = 0;
 #endif
-  // from util.s
-  extern void shutdown_privileged(void);
-  shutdown_privileged();
+  error_shutdown("PVD IRQ");
 }
 
 #endif  // defined(KERNEL_MODE) && defined(USE_PVD)

core/embed/sys/startup/stm32f4/startup_stage_0.s

@@ -56,6 +56,6 @@ reset_handler:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end

core/embed/sys/startup/stm32f4/startup_stage_1.s

@@ -39,7 +39,7 @@ reset_handler:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end
 

core/embed/sys/startup/stm32f4/startup_stage_2.s

@@ -34,6 +34,6 @@ reset_handler:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end

core/embed/sys/startup/stm32f4/vectortable.S

@@ -7,7 +7,7 @@
   .global default_handler
   .type default_handler, STT_FUNC
 default_handler:
-  b shutdown_privileged
+  b Default_IRQHandler
 
   .macro add_handler symbol_name:req
     .word \symbol_name

core/embed/sys/startup/stm32u5/startup_stage_0.s

@@ -74,6 +74,6 @@ clear_ram:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end

core/embed/sys/startup/stm32u5/startup_stage_1.s

@@ -57,6 +57,6 @@ reset_handler:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end

core/embed/sys/startup/stm32u5/startup_stage_2.s

@@ -48,6 +48,6 @@ reset_handler:
   // enter the application code
   bl main
 
-  b shutdown_privileged
+  b system_exit
 
   .end

core/embed/sys/startup/stm32u5/vectortable.S

@@ -7,7 +7,7 @@
   .global default_handler
   .type default_handler, STT_FUNC
 default_handler:
-  b shutdown_privileged
+  b Default_IRQHandler
 
   .macro add_handler symbol_name:req
     .word \symbol_name

core/embed/sys/task/stm32/systask.c

@@ -635,4 +635,6 @@ void NMI_Handler(void) {
   mpu_restore(mpu_mode);
 }
 
+void Default_IRQHandler(void) { error_shutdown("Unhandled IRQ"); }
+
 #endif  // KERNEL_MODE