build: pass gitrev, use it in fatal_error

Makefile

@@ -38,6 +38,9 @@ BOARDLOADER_MAXSIZE = 49152
 BOOTLOADER_MAXSIZE  = 131072
 FIRMWARE_MAXSIZE    = 786432
 
+GITREV=$(shell git rev-parse --short HEAD)
+CFLAGS += -DGITREV=$(GITREV)
+
 ## help commands:
 
 help: ## show this help
@@ -87,10 +90,10 @@ build_firmware: res build_cross ## build firmware with frozen modules
 	$(SCONS) CFLAGS="$(CFLAGS)" build/firmware/firmware.bin
 
 build_unix: ## build unix port
-	$(SCONS) build/unix/micropython $(UNIX_PORT_OPTS)
+	$(SCONS) CFLAGS="$(CFLAGS)" build/unix/micropython $(UNIX_PORT_OPTS)
 
 build_unix_noui: ## build unix port without UI support
-	$(SCONS) build/unix/micropython $(UNIX_PORT_OPTS) TREZOR_NOUI=1
+	$(SCONS) CFLAGS="$(CFLAGS)" build/unix/micropython $(UNIX_PORT_OPTS) TREZOR_NOUI=1
 
 build_cross: ## build mpy-cross port
 	$(MAKE) -C vendor/micropython/mpy-cross $(CROSS_PORT_OPTS)

SConscript.unix

@@ -221,7 +221,7 @@ SOURCE_EMIT_NATIVE = ['vendor/micropython/py/emitnative.c']
 
 SOURCE_QSTR = SOURCE_MOD + SOURCE_MICROPYTHON + SOURCE_UNIX + SOURCE_EMIT_NATIVE
 
-env = Environment(ENV=os.environ)
+env = Environment(ENV=os.environ, CFLAGS=ARGUMENTS.get('CFLAGS', ''))
 
 env.Tool('micropython')
 

embed/trezorhal/common.c

@@ -22,6 +22,11 @@ void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg,
     if (func) {
         display_printf("func: %s\n", func);
     }
+#ifdef GITREV
+#define XSTR(s) STR(s)
+#define STR(s) #s
+    display_printf("rev : %s\n", XSTR(GITREV));
+#endif
     for (;;);
 }
 

embed/unix/common.c

@@ -18,5 +18,10 @@ void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg,
     if (func) {
         printf("func: %s\n", func);
     }
+#ifdef GITREV
+#define XSTR(s) STR(s)
+#define STR(s) #s
+    printf("rev : %s\n", XSTR(GITREV));
+#endif
     exit(1);
 }