diff --git a/core/SConscript.unix b/core/SConscript.unix
index ae42ec6722..c7914ad430 100644
--- a/core/SConscript.unix
+++ b/core/SConscript.unix
@@ -335,6 +335,7 @@ SOURCE_MICROPYTHON = [
 ]
 
 SOURCE_UNIX = [
+    'embed/unix/alloc_only.c',
     'embed/unix/common.c',
     'embed/unix/flash.c',
     'embed/unix/main.c',
diff --git a/core/embed/rust/src/trezorhal/display.rs b/core/embed/rust/src/trezorhal/display.rs
index 413c94f460..f863e28636 100644
--- a/core/embed/rust/src/trezorhal/display.rs
+++ b/core/embed/rust/src/trezorhal/display.rs
@@ -12,6 +12,11 @@ pub fn backlight(val: i32) -> i32 {
     unsafe { ffi::display_backlight(val) }
 }
 
+pub fn refresh() {
+    unsafe {
+        ffi::display_refresh();
+    }
+}
 
 pub fn orientation(degrees: i32) -> i32 {
     unsafe { ffi::display_orientation(degrees) }
diff --git a/core/embed/rust/src/ui/display.rs b/core/embed/rust/src/ui/display.rs
index 3fc4737d51..65c129a45e 100644
--- a/core/embed/rust/src/ui/display.rs
+++ b/core/embed/rust/src/ui/display.rs
@@ -13,6 +13,10 @@ use crate::{
 };
 use core::slice;
 
+pub fn refresh() {
+    display::refresh();
+}
+
 pub fn backlight() -> i32 {
     display::backlight(-1)
 }
diff --git a/core/embed/rust/src/ui/layout/native.rs b/core/embed/rust/src/ui/layout/native.rs
index b6d0186499..ff356456c3 100644
--- a/core/embed/rust/src/ui/layout/native.rs
+++ b/core/embed/rust/src/ui/layout/native.rs
@@ -156,6 +156,7 @@ impl<F> RustLayout<F>
             }
 
             self.paint_if_requested();
+            display::refresh();
         }
     }
 
diff --git a/core/embed/unix/alloc_only.c b/core/embed/unix/alloc_only.c
new file mode 100644
index 0000000000..6a007608b0
--- /dev/null
+++ b/core/embed/unix/alloc_only.c
@@ -0,0 +1,54 @@
+/*
+ * This file is part of the Trezor project, https://trezor.io/
+ *
+ * Copyright (c) SatoshiLabs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "alloc_only.h"
+#include "common.h"
+#include "memzero.h"
+
+#define MEM_SIZE (37888 / 4)
+
+uint32_t alloc_memory_mem[MEM_SIZE];
+uint32_t * alloc_memory;
+
+
+void * alloc_only(uint16_t size){
+
+  void * ptr = NULL;
+
+  size_t aligned_size = size;
+  if (size % 4 != 0) {
+    aligned_size++;
+  }
+
+  if((alloc_memory + aligned_size) <= (alloc_memory_mem + MEM_SIZE)){
+    ptr = alloc_memory;
+    alloc_memory += aligned_size;
+  }
+
+  return ptr;
+}
+
+void alloc_only_init(bool clear) {
+  alloc_memory = alloc_memory_mem;
+
+
+  if (clear) {
+    memzero(alloc_memory_mem, sizeof(alloc_memory_mem));
+  }
+}
diff --git a/core/embed/unix/alloc_only.h b/core/embed/unix/alloc_only.h
new file mode 100644
index 0000000000..0ad9dbd19d
--- /dev/null
+++ b/core/embed/unix/alloc_only.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the Trezor project, https://trezor.io/
+ *
+ * Copyright (c) SatoshiLabs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ALLOC_H
+#define _ALLOC_H
+
+#include "common.h"
+#include "stdbool.h"
+
+
+void * alloc_only(uint16_t size);
+
+void alloc_only_init(bool clear);
+
+
+
+
+#endif //_ALLOC_H
diff --git a/core/embed/unix/main.c b/core/embed/unix/main.c
index 4c797cbea9..dfdf68bf46 100644
--- a/core/embed/unix/main.c
+++ b/core/embed/unix/main.c
@@ -51,6 +51,9 @@
 #include "py/repl.h"
 #include "py/runtime.h"
 #include "py/stackctrl.h"
+#include "display.h"
+#include "alloc_only.h"
+#include "rust_ui.h"
 
 #include "common.h"
 
@@ -421,6 +424,10 @@ void main_clean_exit(int status) {
 #define PATHLIST_SEP_CHAR ':'
 #endif
 
+void rust_eh_personality() {
+
+}
+
 static int do_import_module(const char *modname) {
   mp_obj_t import_args[4];
   import_args[0] = mp_obj_new_str(modname, strlen(modname));
@@ -483,6 +490,13 @@ MP_NOINLINE int main_(int argc, char **argv) {
   // Map trezor.flash to memory.
   flash_init();
 
+  display_init();
+  display_backlight(150);
+  display_refresh();
+  alloc_only_init(false);
+  boot_firmware();
+
+
 #if MICROPY_ENABLE_GC
   char *heap = malloc(heap_size);
   gc_init(heap, heap + heap_size);