diff --git a/Makefile.arm11 b/Makefile.arm11
index 996007b..4422743 100644
--- a/Makefile.arm11
+++ b/Makefile.arm11
@@ -32,17 +32,17 @@
 #---------------------------------------------------------------------------------
 ARCH	:= -march=armv6k -mtune=mpcore -mfloat-abi=hard -marm -mthumb-interwork
 
-CFLAGS	:= $(ARCH) -std=c11 -O2 -g -fstrict-aliasing -mword-relocations -fomit-frame-pointer \
+CFLAGS	:= $(ARCH) -std=c11 -O2 -g -flto -fstrict-aliasing -mword-relocations -fomit-frame-pointer \
 			-ffast-math -ffunction-sections -Wall -Wextra
 CFLAGS	+=	$(INCLUDE) $(DEFINES)
 
-CXXFLAGS	:=	$(ARCH) -std=c11 -O2 -g -fno-rtti -fno-exceptions -fstrict-aliasing \
+CXXFLAGS	:=	$(ARCH) -std=c11 -O2 -g -flto -fno-rtti -fno-exceptions -fstrict-aliasing \
 				-mword-relocations -fomit-frame-pointer -ffast-math -ffunction-sections -Wall -Wextra
 CXXFLAGS	+=	$(INCLUDE) $(DEFINES)
 
-ASFLAGS	:=	$(ARCH) -g $(INCLUDE) $(DEFINES)
+ASFLAGS	:=	$(ARCH) -g -flto $(INCLUDE) $(DEFINES)
 
-LDFLAGS	=	$(ARCH) -g -Wl,--use-blx,--gc-sections,-Map,$(notdir $*.map) -nostartfiles -T ../$(LDNAME)
+LDFLAGS	=	$(ARCH) -g -flto -Wl,--use-blx,--gc-sections,-Map,$(notdir $*.map) -nostartfiles -T ../$(LDNAME)
 
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with the project
diff --git a/include/arm11/main.h b/include/arm11/main.h
index 4522d27..b060c90 100644
--- a/include/arm11/main.h
+++ b/include/arm11/main.h
@@ -1,4 +1,4 @@
 #pragma once
 
-extern bool g_poweroffAllowed;
-extern bool g_startFirmLaunch;
+extern volatile bool g_poweroffAllowed;
+extern volatile bool g_startFirmLaunch;
diff --git a/include/types.h b/include/types.h
index 89d6554..262c353 100644
--- a/include/types.h
+++ b/include/types.h
@@ -10,6 +10,7 @@
 
 
 #define PACKED   __attribute__((packed))
+#define USED     __attribute__((used))
 #define UNUSED   __attribute__((unused))
 #define NAKED    __attribute__((naked))
 
diff --git a/source/arm11/main.c b/source/arm11/main.c
index 795c63d..6894259 100644
--- a/source/arm11/main.c
+++ b/source/arm11/main.c
@@ -9,8 +9,8 @@
 #include "arm11/firm.h"
 
 
-bool g_poweroffAllowed = false;
-bool g_startFirmLaunch = false;
+volatile bool g_poweroffAllowed = false;
+volatile bool g_startFirmLaunch = false;