diff --git a/firmware/config/boards/proteus/openblt/flash_layout.c b/firmware/config/boards/proteus/openblt/flash_layout.c
deleted file mode 100644
index 9f1c8ceb05..0000000000
--- a/firmware/config/boards/proteus/openblt/flash_layout.c
+++ /dev/null
@@ -1,28 +0,0 @@
-
-/* Define STM32F4 or STM32F7 flash layout in dual bank mode. Only first bank is defined */
-
-static const tFlashSector flashLayout[] =
-{
-  /* space is reserved for a bootloader configuration with all supported communication
-   * interfaces enabled. when for example only UART is needed, then the space required
-   * for the bootloader can be made a lot smaller here.
-   */
-  /* { 0x08000000, 0x04000, 0 },         flash sector 0 - reserved for bootloader      */
-  /* { 0x08004000, 0x04000, 1 },         flash sector 1 - reserved for bootloader      */
-  { 0x08008000, 0x08000, 2},            /* flash sector  2 - 16kb                      */
-  { 0x0800c000, 0x08000, 3},            /* flash sector  3 - 16kb                      */
-  { 0x08010000, 0x10000, 4},            /* flash sector  4 - 64kb                      */
-  { 0x08020000, 0x20000, 5},            /* flash sector  5 - 128kb                     */
-  { 0x08040000, 0x20000, 6},            /* flash sector  6 - 128kb                     */
-  { 0x08060000, 0x20000, 7},            /* flash sector  7 - 128kb                     */
-#if (BOOT_NVM_SIZE_KB > 1024)
-  { 0x08080000, 0x20000, 8},            /* flash sector  8 - 128kb                     */
-  { 0x080a0000, 0x20000, 9},            /* flash sector  9 - 128kb                     */
-  { 0x080c0000, 0x20000, 10},           /* flash sector 10 - 128kb                     */
-  { 0x080e0000, 0x20000, 11},           /* flash sector 11 - 128kb                     */
-#endif
-  /* Bank #2 is not defined */
-#if (BOOT_NVM_SIZE_KB > 2048)
-#error "BOOT_NVM_SIZE_KB > 2048 is currently not supported."
-#endif
-};
\ No newline at end of file
diff --git a/firmware/config/boards/subaru_eg33/openblt/flash_layout.c b/firmware/config/boards/subaru_eg33/openblt/flash_layout.c
deleted file mode 100644
index 074fd1262b..0000000000
--- a/firmware/config/boards/subaru_eg33/openblt/flash_layout.c
+++ /dev/null
@@ -1,28 +0,0 @@
-
-/* Define STM32F765 flash layout in dual bank mode. Only first bank is defined */
-
-static const tFlashSector flashLayout[] =
-{
-  /* space is reserved for a bootloader configuration with all supported communication
-   * interfaces enabled. when for example only UART is needed, then the space required
-   * for the bootloader can be made a lot smaller here.
-   */
-  /* { 0x08000000, 0x04000, 0 },         flash sector 0 - reserved for bootloader      */
-  /* { 0x08004000, 0x04000, 1 },         flash sector 1 - reserved for bootloader      */
-  { 0x08008000, 0x08000, 2},            /* flash sector  2 - 16kb                      */
-  { 0x0800c000, 0x08000, 3},            /* flash sector  3 - 16kb                      */
-  { 0x08010000, 0x10000, 4},            /* flash sector  4 - 64kb                      */
-  { 0x08020000, 0x20000, 5},            /* flash sector  5 - 128kb                     */
-  { 0x08040000, 0x20000, 6},            /* flash sector  6 - 128kb                     */
-  { 0x08060000, 0x20000, 7},            /* flash sector  7 - 128kb                     */
-#if (BOOT_NVM_SIZE_KB > 1024)
-  { 0x08080000, 0x20000, 8},            /* flash sector  8 - 128kb                     */
-  { 0x080a0000, 0x20000, 9},            /* flash sector  9 - 128kb                     */
-  { 0x080c0000, 0x20000, 10},           /* flash sector 10 - 128kb                     */
-  { 0x080e0000, 0x20000, 11},           /* flash sector 11 - 128kb                     */
-#endif
-  /* Bank #2 is not defined */
-#if (BOOT_NVM_SIZE_KB > 2048)
-#error "BOOT_NVM_SIZE_KB > 2048 is currently not supported."
-#endif
-};
\ No newline at end of file
diff --git a/firmware/config/boards/microrusefi/openblt/flash_layout.c b/firmware/hw_layer/openblt/flash_layout.c
similarity index 90%
rename from firmware/config/boards/microrusefi/openblt/flash_layout.c
rename to firmware/hw_layer/openblt/flash_layout.c
index 58d3fb53bb..09415482c1 100644
--- a/firmware/config/boards/microrusefi/openblt/flash_layout.c
+++ b/firmware/hw_layer/openblt/flash_layout.c
@@ -1,6 +1,7 @@
 
-/* Define STM32F427 flash layout in dual bank mode. Only first bank is defined */
+/* Define STM32F4, STM32F7 or STM32F765 flash layout in dual bank mode. Only first bank is defined */
 
+// todo: document the magic which accesses this 'static' field?!
 static const tFlashSector flashLayout[] =
 {
   /* space is reserved for a bootloader configuration with all supported communication