5 files changed, 69 insertions, 73 deletions
diff --git a/builddefs/build_full_test.mk b/builddefs/build_full_test.mk
index 964ba773d4..85ee0898ec 100644
--- a/builddefs/build_full_test.mk
+++ b/builddefs/build_full_test.mk
@@ -17,7 +17,6 @@ $(TEST)_INC := \
 	tests/test_common/common_config.h
 
 $(TEST)_SRC := \
-	$(TMK_COMMON_SRC) \
 	$(QUANTUM_SRC) \
 	$(SRC) \
 	$(QUANTUM_PATH)/keymap_introspection.c \
@@ -31,7 +30,7 @@ $(TEST)_SRC := \
 	tests/test_common/test_logger.cpp \
 	$(patsubst $(ROOTDIR)/%,%,$(wildcard $(TEST_PATH)/*.cpp))
 
-$(TEST)_DEFS := $(TMK_COMMON_DEFS) $(OPT_DEFS) "-DKEYMAP_C=\"keymap.c\""
+$(TEST)_DEFS := $(OPT_DEFS) "-DKEYMAP_C=\"keymap.c\""
 
 $(TEST)_CONFIG := $(TEST_PATH)/config.h
 
diff --git a/builddefs/build_keyboard.mk b/builddefs/build_keyboard.mk
index 0425d3fc9d..e93ab97cc1 100644
--- a/builddefs/build_keyboard.mk
+++ b/builddefs/build_keyboard.mk
@@ -27,7 +27,6 @@ QMK_BIN ?= qmk
 # Set the filename for the final firmware binary
 KEYBOARD_FILESAFE := $(subst /,_,$(KEYBOARD))
 TARGET ?= $(KEYBOARD_FILESAFE)_$(KEYMAP)
-KEYBOARD_OUTPUT := $(BUILD_DIR)/obj_$(KEYBOARD_FILESAFE)
 
 ifeq ($(strip $(DUMP_CI_METADATA)),yes)
     $(info CI Metadata: KEYBOARD=$(KEYBOARD))
@@ -44,7 +43,7 @@ endif
 # Object files and generated keymap directory
 #     To put object files in current directory, use a dot (.), do NOT make
 #     this an empty or blank macro!
-KEYMAP_OUTPUT := $(BUILD_DIR)/obj_$(TARGET)
+INTERMEDIATE_OUTPUT := $(BUILD_DIR)/obj_$(TARGET)
 
 ifdef SKIP_VERSION
     OPT_DEFS += -DSKIP_VERSION
@@ -60,7 +59,7 @@ VERSION_H_FLAGS += --skip-git
 endif
 
 # Generate the board's version.h file.
-$(shell $(QMK_BIN) generate-version-h $(VERSION_H_FLAGS) -q -o $(KEYMAP_OUTPUT)/src/version.h)
+$(shell $(QMK_BIN) generate-version-h $(VERSION_H_FLAGS) -q -o $(INTERMEDIATE_OUTPUT)/src/version.h)
 
 # Determine which subfolders exist.
 KEYBOARD_FOLDER_PATH_1 := $(KEYBOARD)
@@ -121,7 +120,7 @@ MAIN_KEYMAP_PATH_4 := $(KEYBOARD_PATH_4)/keymaps/$(KEYMAP)
 MAIN_KEYMAP_PATH_5 := $(KEYBOARD_PATH_5)/keymaps/$(KEYMAP)
 
 # Pull in rules from info.json
-INFO_RULES_MK = $(shell $(QMK_BIN) generate-rules-mk --quiet --escape --keyboard $(KEYBOARD) --output $(KEYBOARD_OUTPUT)/src/info_rules.mk)
+INFO_RULES_MK = $(shell $(QMK_BIN) generate-rules-mk --quiet --escape --keyboard $(KEYBOARD) --output $(INTERMEDIATE_OUTPUT)/src/info_rules.mk)
 include $(INFO_RULES_MK)
 
 # Check for keymap.json first, so we can regenerate keymap.c
@@ -161,28 +160,28 @@ endif
 
 # Have we found a keymap.json?
 ifneq ("$(wildcard $(KEYMAP_JSON))", "")
-    KEYMAP_C := $(KEYMAP_OUTPUT)/src/keymap.c
-    KEYMAP_H := $(KEYMAP_OUTPUT)/src/config.h
+    KEYMAP_C := $(INTERMEDIATE_OUTPUT)/src/keymap.c
+    KEYMAP_H := $(INTERMEDIATE_OUTPUT)/src/config.h
 
     # Load the keymap-level rules.mk if exists
     -include $(KEYMAP_PATH)/rules.mk
 
     # Load any rules.mk content from keymap.json
-    INFO_RULES_MK = $(shell $(QMK_BIN) generate-rules-mk --quiet --escape --output $(KEYMAP_OUTPUT)/src/rules.mk $(KEYMAP_JSON))
+    INFO_RULES_MK = $(shell $(QMK_BIN) generate-rules-mk --quiet --escape --output $(INTERMEDIATE_OUTPUT)/src/rules.mk $(KEYMAP_JSON))
     include $(INFO_RULES_MK)
 
 # Add rules to generate the keymap files - indentation here is important
-$(KEYMAP_OUTPUT)/src/keymap.c: $(KEYMAP_JSON)
+$(INTERMEDIATE_OUTPUT)/src/keymap.c: $(KEYMAP_JSON)
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
 	$(eval CMD=$(QMK_BIN) json2c --quiet --output $(KEYMAP_C) $(KEYMAP_JSON))
 	@$(BUILD_CMD)
 
-$(KEYMAP_OUTPUT)/src/config.h: $(KEYMAP_JSON)
+$(INTERMEDIATE_OUTPUT)/src/config.h: $(KEYMAP_JSON)
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
 	$(eval CMD=$(QMK_BIN) generate-config-h --quiet --output $(KEYMAP_H) $(KEYMAP_JSON))
 	@$(BUILD_CMD)
 
-generated-files: $(KEYMAP_OUTPUT)/src/config.h $(KEYMAP_OUTPUT)/src/keymap.c
+generated-files: $(INTERMEDIATE_OUTPUT)/src/config.h $(INTERMEDIATE_OUTPUT)/src/keymap.c
 
 endif
 
@@ -323,34 +322,34 @@ ifneq ("$(wildcard $(KEYBOARD_PATH_5)/info.json)","")
     INFO_JSON_FILES += $(KEYBOARD_PATH_5)/info.json
 endif
 
-CONFIG_H += $(KEYBOARD_OUTPUT)/src/info_config.h
-KEYBOARD_SRC += $(KEYBOARD_OUTPUT)/src/default_keyboard.c
+CONFIG_H += $(INTERMEDIATE_OUTPUT)/src/info_config.h
+KEYBOARD_SRC += $(INTERMEDIATE_OUTPUT)/src/default_keyboard.c
 
-$(KEYBOARD_OUTPUT)/src/info_config.h: $(INFO_JSON_FILES)
+$(INTERMEDIATE_OUTPUT)/src/info_config.h: $(INFO_JSON_FILES)
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
-	$(eval CMD=$(QMK_BIN) generate-config-h --quiet --keyboard $(KEYBOARD) --output $(KEYBOARD_OUTPUT)/src/info_config.h)
+	$(eval CMD=$(QMK_BIN) generate-config-h --quiet --keyboard $(KEYBOARD) --output $(INTERMEDIATE_OUTPUT)/src/info_config.h)
 	@$(BUILD_CMD)
 
-$(KEYBOARD_OUTPUT)/src/default_keyboard.c: $(INFO_JSON_FILES)
+$(INTERMEDIATE_OUTPUT)/src/default_keyboard.c: $(INFO_JSON_FILES)
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
-	$(eval CMD=$(QMK_BIN) generate-keyboard-c --quiet --keyboard $(KEYBOARD) --output $(KEYBOARD_OUTPUT)/src/default_keyboard.c)
+	$(eval CMD=$(QMK_BIN) generate-keyboard-c --quiet --keyboard $(KEYBOARD) --output $(INTERMEDIATE_OUTPUT)/src/default_keyboard.c)
 	@$(BUILD_CMD)
 
-$(KEYBOARD_OUTPUT)/src/default_keyboard.h: $(INFO_JSON_FILES)
+$(INTERMEDIATE_OUTPUT)/src/default_keyboard.h: $(INFO_JSON_FILES)
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
-	$(eval CMD=$(QMK_BIN) generate-keyboard-h --quiet --keyboard $(KEYBOARD) --include $(FOUND_KEYBOARD_H) --output $(KEYBOARD_OUTPUT)/src/default_keyboard.h)
+	$(eval CMD=$(QMK_BIN) generate-keyboard-h --quiet --keyboard $(KEYBOARD) --include $(FOUND_KEYBOARD_H) --output $(INTERMEDIATE_OUTPUT)/src/default_keyboard.h)
 	@$(BUILD_CMD)
 
-generated-files: $(KEYBOARD_OUTPUT)/src/info_config.h $(KEYBOARD_OUTPUT)/src/default_keyboard.c $(KEYBOARD_OUTPUT)/src/default_keyboard.h
+generated-files: $(INTERMEDIATE_OUTPUT)/src/info_config.h $(INTERMEDIATE_OUTPUT)/src/default_keyboard.c $(INTERMEDIATE_OUTPUT)/src/default_keyboard.h
 
-generated-files: $(KEYMAP_OUTPUT)/src/info_deps.d
+generated-files: $(INTERMEDIATE_OUTPUT)/src/info_deps.d
 
-$(KEYMAP_OUTPUT)/src/info_deps.d:
+$(INTERMEDIATE_OUTPUT)/src/info_deps.d:
 	@$(SILENT) || printf "$(MSG_GENERATING) $@" | $(AWK_CMD)
-	$(eval CMD=$(QMK_BIN) generate-make-dependencies -kb $(KEYBOARD) -km $(KEYMAP) -o $(KEYMAP_OUTPUT)/src/info_deps.d)
+	$(eval CMD=$(QMK_BIN) generate-make-dependencies -kb $(KEYBOARD) -km $(KEYMAP) -o $(INTERMEDIATE_OUTPUT)/src/info_deps.d)
 	@$(BUILD_CMD)
 
--include $(KEYMAP_OUTPUT)/src/info_deps.d
+-include $(INTERMEDIATE_OUTPUT)/src/info_deps.d
 
 .INTERMEDIATE : generated-files
 
@@ -423,8 +422,7 @@ VPATH += $(KEYMAP_PATH)
 VPATH += $(USER_PATH)
 VPATH += $(KEYBOARD_PATHS)
 VPATH += $(COMMON_VPATH)
-VPATH += $(KEYBOARD_OUTPUT)/src
-VPATH += $(KEYMAP_OUTPUT)/src
+VPATH += $(INTERMEDIATE_OUTPUT)/src
 
 include $(BUILDDEFS_PATH)/common_features.mk
 include $(BUILDDEFS_PATH)/generic_features.mk
@@ -433,19 +431,17 @@ include $(PLATFORM_PATH)/common.mk
 
 SRC += $(patsubst %.c,%.clib,$(LIB_SRC))
 SRC += $(patsubst %.c,%.clib,$(QUANTUM_LIB_SRC))
-SRC += $(TMK_COMMON_SRC)
-OPT_DEFS += $(TMK_COMMON_DEFS)
-EXTRALDFLAGS += $(TMK_COMMON_LDFLAGS)
 
 -include $(PLATFORM_PATH)/$(PLATFORM_KEY)/bootloader.mk
 include $(PLATFORM_PATH)/$(PLATFORM_KEY)/platform.mk
 -include $(PLATFORM_PATH)/$(PLATFORM_KEY)/flash.mk
 
 ifneq ($(strip $(PROTOCOL)),)
-    include $(TMK_PATH)/protocol/$(strip $(shell echo $(PROTOCOL) | tr '[:upper:]' '[:lower:]')).mk
+PROTOCOL_KEY = $(strip $(shell echo $(PROTOCOL) | tr '[:upper:]' '[:lower:]'))
 else
-    include $(TMK_PATH)/protocol/$(PLATFORM_KEY).mk
+PROTOCOL_KEY = $(PLATFORM_KEY)
 endif
+include $(TMK_PATH)/protocol/$(PROTOCOL_KEY)/$(PROTOCOL_KEY).mk
 
 # Setup definitions based on the selected MCU
 $(eval $(call add_qmk_prefix_defs,MCU_ORIG,MCU))
@@ -471,17 +467,14 @@ PROJECT_CONFIG := $(CONFIG_H)
 CONFIG_H += $(POST_CONFIG_H)
 ALL_CONFIGS := $(PROJECT_CONFIG) $(CONFIG_H)
 
-OUTPUTS := $(KEYMAP_OUTPUT) $(KEYBOARD_OUTPUT)
-$(KEYMAP_OUTPUT)_SRC := $(SRC)
-$(KEYMAP_OUTPUT)_DEFS := $(OPT_DEFS) \
--DQMK_KEYBOARD=\"$(KEYBOARD)\" -DQMK_KEYBOARD_H=\"$(KEYBOARD_OUTPUT)/src/default_keyboard.h\" \
--DQMK_KEYMAP=\"$(KEYMAP)\" -DQMK_KEYMAP_H=\"$(KEYMAP).h\" -DQMK_KEYMAP_CONFIG_H=\"$(KEYMAP_PATH)/config.h\"
-$(KEYMAP_OUTPUT)_INC :=  $(VPATH) $(EXTRAINCDIRS)
-$(KEYMAP_OUTPUT)_CONFIG := $(CONFIG_H)
-$(KEYBOARD_OUTPUT)_SRC := $(PLATFORM_SRC)
-$(KEYBOARD_OUTPUT)_DEFS := $(PROJECT_DEFS)
-$(KEYBOARD_OUTPUT)_INC := $(PROJECT_INC)
-$(KEYBOARD_OUTPUT)_CONFIG := $(PROJECT_CONFIG)
+OUTPUTS := $(INTERMEDIATE_OUTPUT)
+$(INTERMEDIATE_OUTPUT)_SRC := $(SRC) $(PLATFORM_SRC)
+$(INTERMEDIATE_OUTPUT)_DEFS := $(OPT_DEFS) \
+	-DQMK_KEYBOARD=\"$(KEYBOARD)\" -DQMK_KEYBOARD_H=\"$(INTERMEDIATE_OUTPUT)/src/default_keyboard.h\" \
+	-DQMK_KEYMAP=\"$(KEYMAP)\" -DQMK_KEYMAP_H=\"$(KEYMAP).h\" -DQMK_KEYMAP_CONFIG_H=\"$(KEYMAP_PATH)/config.h\" \
+	$(PROJECT_DEFS)
+$(INTERMEDIATE_OUTPUT)_INC :=  $(VPATH) $(EXTRAINCDIRS) $(PROJECT_INC)
+$(INTERMEDIATE_OUTPUT)_CONFIG := $(CONFIG_H) $(PROJECT_CONFIG)
 
 # Default target.
 all: build check-size
diff --git a/builddefs/common_features.mk b/builddefs/common_features.mk
index e904d6beb9..47fe56e4aa 100644
--- a/builddefs/common_features.mk
+++ b/builddefs/common_features.mk
@@ -352,8 +352,8 @@ ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
 endif
 
 LED_MATRIX_ENABLE ?= no
-VALID_LED_MATRIX_TYPES := IS31FL3731 IS31FL3742A IS31FL3743A IS31FL3745 IS31FL3746A CKLED2001 custom
-# TODO: IS31FL3733 IS31FL3737 IS31FL3741
+VALID_LED_MATRIX_TYPES := is31fl3731 is31fl3742a is31fl3743a is31fl3745 is31fl3746a ckled2001 custom
+# TODO: is31fl3733 is31fl3737 is31fl3741
 
 ifeq ($(strip $(LED_MATRIX_ENABLE)), yes)
     ifeq ($(filter $(LED_MATRIX_DRIVER),$(VALID_LED_MATRIX_TYPES)),)
@@ -373,42 +373,42 @@ endif
     SRC += $(LIB_PATH)/lib8tion/lib8tion.c
     CIE1931_CURVE := yes
 
-    ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3731)
+    ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3731)
         OPT_DEFS += -DIS31FL3731 -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi
         SRC += is31fl3731-simple.c
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
-	ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3742A)
+	ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3742a)
         OPT_DEFS += -DIS31FLCOMMON -DIS31FL3742A -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi
         SRC += is31flcommon.c
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
-	ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3743A)
+	ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3743a)
         OPT_DEFS += -DIS31FLCOMMON -DIS31FL3743A -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi
         SRC += is31flcommon.c
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
-	ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3745)
+	ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3745)
         OPT_DEFS += -DIS31FLCOMMON -DIS31FL3745 -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi
         SRC += is31flcommon.c
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
-	ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3746A)
+	ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3746a)
         OPT_DEFS += -DIS31FLCOMMON -DIS31FL3746A -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi
         SRC += is31flcommon.c
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
-	ifeq ($(strip $(LED_MATRIX_DRIVER)), CKLED2001)
+	ifeq ($(strip $(LED_MATRIX_DRIVER)), ckled2001)
         OPT_DEFS += -DCKLED2001 -DSTM32_I2C -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led
         SRC += ckled2001-simple.c
@@ -565,18 +565,18 @@ ifeq ($(strip $(BACKLIGHT_ENABLE)), yes)
     endif
 
     COMMON_VPATH += $(QUANTUM_DIR)/backlight
+    COMMON_VPATH += $(DRIVER_PATH)/backlight
     SRC += $(QUANTUM_DIR)/backlight/backlight.c
     SRC += $(QUANTUM_DIR)/process_keycode/process_backlight.c
     OPT_DEFS += -DBACKLIGHT_ENABLE
 
-    ifeq ($(strip $(BACKLIGHT_DRIVER)), custom)
-        OPT_DEFS += -DBACKLIGHT_CUSTOM_DRIVER
-    else
+    ifneq ($(strip $(BACKLIGHT_DRIVER)), custom)
         SRC += $(QUANTUM_DIR)/backlight/backlight_driver_common.c
-        ifeq ($(strip $(BACKLIGHT_DRIVER)), pwm)
-            SRC += $(QUANTUM_DIR)/backlight/backlight_$(PLATFORM_KEY).c
+
+        ifeq ($(strip $(BACKLIGHT_DRIVER)), software)
+            SRC += $(DRIVER_PATH)/backlight/backlight_software.c
         else
-            SRC += $(QUANTUM_DIR)/backlight/backlight_$(strip $(BACKLIGHT_DRIVER)).c
+            SRC += $(PLATFORM_PATH)/$(PLATFORM_KEY)/$(DRIVER_DIR)/backlight_$(strip $(BACKLIGHT_DRIVER)).c
         endif
     endif
 endif
@@ -721,18 +721,23 @@ ifeq ($(strip $(FNV_ENABLE)), yes)
     SRC += qmk_fnv_type_validation.c hash_32a.c hash_64a.c
 endif
 
+VALID_HAPTIC_DRIVER_TYPES := drv2605l solenoid
 ifeq ($(strip $(HAPTIC_ENABLE)),yes)
-    COMMON_VPATH += $(DRIVER_PATH)/haptic
+    ifeq ($(filter $(HAPTIC_DRIVER),$(VALID_HAPTIC_DRIVER_TYPES)),)
+        $(call CATASTROPHIC_ERROR,Invalid HAPTIC_DRIVER,HAPTIC_DRIVER="$(HAPTIC_DRIVER)" is not a valid Haptic driver)
+    else
+        COMMON_VPATH += $(DRIVER_PATH)/haptic
 
-    ifneq ($(filter DRV2605L, $(HAPTIC_DRIVER)), )
-        SRC += DRV2605L.c
-        QUANTUM_LIB_SRC += i2c_master.c
-        OPT_DEFS += -DDRV2605L
-    endif
+        ifeq ($(strip $(HAPTIC_DRIVER)), drv2605l)
+            SRC += drv2605l.c
+            QUANTUM_LIB_SRC += i2c_master.c
+            OPT_DEFS += -DHAPTIC_DRV2605L
+        endif
 
-    ifneq ($(filter SOLENOID, $(HAPTIC_DRIVER)), )
-        SRC += solenoid.c
-        OPT_DEFS += -DSOLENOID_ENABLE
+        ifeq ($(strip $(HAPTIC_DRIVER)), solenoid)
+            SRC += solenoid.c
+            OPT_DEFS += -DHAPTIC_SOLENOID
+        endif
     endif
 endif
 
@@ -742,8 +747,8 @@ ifeq ($(strip $(HD44780_ENABLE)), yes)
     SRC += hd44780.c
 endif
 
-VALID_OLED_DRIVER_TYPES := SSD1306 custom
-OLED_DRIVER ?= SSD1306
+VALID_OLED_DRIVER_TYPES := custom ssd1306
+OLED_DRIVER ?= ssd1306
 VALID_OLED_TRANSPORT_TYPES := i2c spi custom
 OLED_TRANSPORT ?= i2c
 ifeq ($(strip $(OLED_ENABLE)), yes)
@@ -898,7 +903,7 @@ ifeq ($(strip $(USBPD_ENABLE)), yes)
 endif
 
 BLUETOOTH_ENABLE ?= no
-VALID_BLUETOOTH_DRIVER_TYPES := BluefruitLE RN42 custom
+VALID_BLUETOOTH_DRIVER_TYPES := bluefruit_le custom rn42
 ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
     ifeq ($(filter $(strip $(BLUETOOTH_DRIVER)),$(VALID_BLUETOOTH_DRIVER_TYPES)),)
         $(call CATASTROPHIC_ERROR,Invalid BLUETOOTH_DRIVER,BLUETOOTH_DRIVER="$(BLUETOOTH_DRIVER)" is not a valid Bluetooth driver type)
@@ -908,7 +913,7 @@ ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
     COMMON_VPATH += $(DRIVER_PATH)/bluetooth
     SRC += outputselect.c
 
-    ifeq ($(strip $(BLUETOOTH_DRIVER)), BluefruitLE)
+    ifeq ($(strip $(BLUETOOTH_DRIVER)), bluefruit_le)
         OPT_DEFS += -DBLUETOOTH_BLUEFRUIT_LE -DHAL_USE_SPI=TRUE
         SRC += $(DRIVER_PATH)/bluetooth/bluetooth.c
         SRC += $(DRIVER_PATH)/bluetooth/bluefruit_le.cpp
@@ -916,7 +921,7 @@ ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
         QUANTUM_LIB_SRC += spi_master.c
     endif
 
-    ifeq ($(strip $(BLUETOOTH_DRIVER)), RN42)
+    ifeq ($(strip $(BLUETOOTH_DRIVER)), rn42)
         OPT_DEFS += -DBLUETOOTH_RN42 -DHAL_USE_SERIAL=TRUE
         SRC += $(DRIVER_PATH)/bluetooth/bluetooth.c
         SRC += $(DRIVER_PATH)/bluetooth/rn42.c
diff --git a/builddefs/common_rules.mk b/builddefs/common_rules.mk
index 816eac49ae..5d635307ed 100644
--- a/builddefs/common_rules.mk
+++ b/builddefs/common_rules.mk
@@ -176,7 +176,7 @@ MOVE_DEP = mv -f $(patsubst %.o,%.td,$@) $(patsubst %.o,%.d,$@)
 
 # For a ChibiOS build, ensure that the board files have the hook overrides injected
 define BOARDSRC_INJECT_HOOKS
-$(KEYBOARD_OUTPUT)/$(patsubst %.c,%.o,$(patsubst ./%,%,$1)): INIT_HOOK_CFLAGS += -include $(TOP_DIR)/tmk_core/protocol/chibios/init_hooks.h
+$(INTERMEDIATE_OUTPUT)/$(patsubst %.c,%.o,$(patsubst ./%,%,$1)): INIT_HOOK_CFLAGS += -include $(TOP_DIR)/tmk_core/protocol/chibios/init_hooks.h
 endef
 $(foreach LOBJ, $(BOARDSRC), $(eval $(call BOARDSRC_INJECT_HOOKS,$(LOBJ))))
 
diff --git a/builddefs/show_options.mk b/builddefs/show_options.mk
index 8bcc02083b..c21f907881 100644
--- a/builddefs/show_options.mk
+++ b/builddefs/show_options.mk
@@ -60,7 +60,6 @@ OTHER_OPTION_NAMES = \
   ENCODER_ENABLE_CUSTOM \
   GERMAN_ENABLE \
   HAPTIC_ENABLE \
-  HHKB_RN42_ENABLE \
   ISSI_ENABLE \
   KEYLOGGER_ENABLE \
   LCD_BACKLIGHT_ENABLE \