build(core): fix build for Rust unit tests on T3T1

core/Makefile

@@ -1,3 +1,4 @@
+
 .PHONY: vendor
 
 # get the number of CPU cores in a "portable" manner
@@ -61,6 +62,7 @@ else ifeq ($(TREZOR_MODEL),$(filter $(TREZOR_MODEL),T3T1))
 MCU = STM32U5
 OPENOCD_TARGET = target/stm32u5x.cfg
 LAYOUT_FILE = embed/models/T3T1/model_T3T1.h
+MODEL_FEATURE = model_mercury
 else ifeq ($(TREZOR_MODEL),$(filter $(TREZOR_MODEL),DISC1))
 MCU = STM32F4
 LAYOUT_FILE = embed/models/D001/model_D001.h

core/embed/rust/Cargo.toml

@@ -44,21 +44,22 @@ usb = []
 optiga = []
 translations = ["crypto"]
 test = [
+    "backlight",
     "button",
     "cc",
     "crypto",
+    "dma2d",
     "debug",
     "glob",
     "micropython",
+    "new_rendering",
+    "optiga",
     "protobuf",
+    "touch",
+    "translations",
     "ui",
     "ui_jpeg_decoder",
     "ui_blurring",
-    "dma2d",
-    "touch",
-    "backlight",
-    "optiga",
-    "translations",
     "universal_fw",
 ]
 universal_fw = []

core/embed/rust/build.rs

@@ -52,11 +52,23 @@ const DEFAULT_BINDGEN_MACROS_T2B1: &[&str] = &[
 #[cfg(not(feature = "model_tr"))]
 const DEFAULT_BINDGEN_MACROS_T2B1: &[&str] = &[];
 
+#[cfg(feature = "model_mercury")]
+const DEFAULT_BINDGEN_MACROS_T3T1: &[&str] = &[
+    "-DSTM32U5",
+    "-DTREZOR_MODEL_T3T1",
+    "-DFLASH_BIT_ACCESS=0",
+    "-DFLASH_BLOCK_WORDS=4",
+    "-DTREZOR_BOARD=\"T3T1/boards/t3t1-unix.h\"",
+];
+#[cfg(not(feature = "model_mercury"))]
+const DEFAULT_BINDGEN_MACROS_T3T1: &[&str] = &[];
+
 fn add_bindgen_macros<'a>(clang_args: &mut Vec<&'a str>, envvar: Option<&'a str>) {
     let default_macros = DEFAULT_BINDGEN_MACROS_COMMON
         .iter()
         .chain(DEFAULT_BINDGEN_MACROS_T2T1)
-        .chain(DEFAULT_BINDGEN_MACROS_T2B1);
+        .chain(DEFAULT_BINDGEN_MACROS_T2B1)
+        .chain(DEFAULT_BINDGEN_MACROS_T3T1);
 
     match envvar {
         Some(envvar) => clang_args.extend(envvar.split(',')),