Cleanup rules.mk for 32U4 keyboards, 0-9 (#6789)

29 files changed, 118 insertions, 1183 deletions

diff --git a/keyboards/1upkeyboards/1up60hse/rules.mk b/keyboards/1upkeyboards/1up60hse/rules.mk
index 550241948d..09caf0045a 100644
--- a/keyboards/1upkeyboards/1up60hse/rules.mk
+++ b/keyboards/1upkeyboards/1up60hse/rules.mk
@@ -1,51 +1,15 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-#   Teensy halfKay   512
-#   Teensy++ halfKay 1024
-#   Atmel DFU loader 4096
-#   LUFA bootloader  4096
-#   USBaspLoader     2048
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu
 
 # Build Options
 #   change yes to no to disable
diff --git a/keyboards/1upkeyboards/1up60hte/rules.mk b/keyboards/1upkeyboards/1up60hte/rules.mk
index e994785ba8..d2bedea1b6 100644
--- a/keyboards/1upkeyboards/1up60hte/rules.mk
+++ b/keyboards/1upkeyboards/1up60hte/rules.mk
@@ -1,6 +1,14 @@
 # MCU name
 MCU = atmega32u4
 
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = atmel-dfu
 
 # Build Options
diff --git a/keyboards/1upkeyboards/1up60rgb/rules.mk b/keyboards/1upkeyboards/1up60rgb/rules.mk
index 8b1cf6667f..98a1e93a1b 100644
--- a/keyboards/1upkeyboards/1up60rgb/rules.mk
+++ b/keyboards/1upkeyboards/1up60rgb/rules.mk
@@ -1,45 +1,15 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu
 
 # Build Options
 #   comment out to disable the options.
diff --git a/keyboards/1upkeyboards/super16/rules.mk b/keyboards/1upkeyboards/super16/rules.mk
index 31042dfb81..07a403cc11 100644
--- a/keyboards/1upkeyboards/super16/rules.mk
+++ b/keyboards/1upkeyboards/super16/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-#EXTRAFLAGS += -flto
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/1upkeyboards/sweet16/rules.mk b/keyboards/1upkeyboards/sweet16/rules.mk
index e3436dc338..6e1a5eec99 100644
--- a/keyboards/1upkeyboards/sweet16/rules.mk
+++ b/keyboards/1upkeyboards/sweet16/rules.mk
@@ -1,45 +1,15 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
 
 # Build Options
 #   comment out to disable the options.
diff --git a/keyboards/2_milk/rules.mk b/keyboards/2_milk/rules.mk
index 73f55f9538..57c6d32c81 100644
--- a/keyboards/2_milk/rules.mk
+++ b/keyboards/2_milk/rules.mk
@@ -1,24 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-F_USB = $(F_CPU)
-
-# Bootloader
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
 # Build Options
 #   comment out to disable the options.
 #
diff --git a/keyboards/30wer/rules.mk b/keyboards/30wer/rules.mk
index 9d77ec5461..1aeca9a545 100644
--- a/keyboards/30wer/rules.mk
+++ b/keyboards/30wer/rules.mk
@@ -1,45 +1,14 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-# Bootloader
-#     This definition is optional, and if your keyboard supports multiple bootloaders of
-#     different sizes, comment this out, and the correct address will be loaded
-#     automatically (+60). See bootloader.mk for all options.
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
 # Build Options
diff --git a/keyboards/40percentclub/25/rules.mk b/keyboards/40percentclub/25/rules.mk
index bfcdce7c99..3321a84025 100644
--- a/keyboards/40percentclub/25/rules.mk
+++ b/keyboards/40percentclub/25/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/4x4/rules.mk b/keyboards/40percentclub/4x4/rules.mk
index 4ab5e7431c..c653c6753d 100644
--- a/keyboards/40percentclub/4x4/rules.mk
+++ b/keyboards/40percentclub/4x4/rules.mk
@@ -1,61 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/5x5/rules.mk b/keyboards/40percentclub/5x5/rules.mk
index 237de64977..d8b82248c6 100644
--- a/keyboards/40percentclub/5x5/rules.mk
+++ b/keyboards/40percentclub/5x5/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/6lit/rules.mk b/keyboards/40percentclub/6lit/rules.mk
index 3275651650..db09b6c5f6 100644
--- a/keyboards/40percentclub/6lit/rules.mk
+++ b/keyboards/40percentclub/6lit/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/foobar/rules.mk b/keyboards/40percentclub/foobar/rules.mk
index 155a7daacb..4b77d4cdba 100644
--- a/keyboards/40percentclub/foobar/rules.mk
+++ b/keyboards/40percentclub/foobar/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/gherkin/rules.mk b/keyboards/40percentclub/gherkin/rules.mk
index 1e0b346417..190aea355a 100644
--- a/keyboards/40percentclub/gherkin/rules.mk
+++ b/keyboards/40percentclub/gherkin/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   comment out to disable the options.
 #
diff --git a/keyboards/40percentclub/half_n_half/rules.mk b/keyboards/40percentclub/half_n_half/rules.mk
index 3b584f8450..62d9e37ada 100644
--- a/keyboards/40percentclub/half_n_half/rules.mk
+++ b/keyboards/40percentclub/half_n_half/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/i75/promicro/rules.mk b/keyboards/40percentclub/i75/promicro/rules.mk
index dc6f196237..e6fef51727 100644
--- a/keyboards/40percentclub/i75/promicro/rules.mk
+++ b/keyboards/40percentclub/i75/promicro/rules.mk
@@ -1,58 +1,12 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
-
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
diff --git a/keyboards/40percentclub/i75/teensy2/rules.mk b/keyboards/40percentclub/i75/teensy2/rules.mk
index 3fb7c7e5a7..ae398e2588 100644
--- a/keyboards/40percentclub/i75/teensy2/rules.mk
+++ b/keyboards/40percentclub/i75/teensy2/rules.mk
@@ -1,58 +1,12 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = halfkay
-
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
diff --git a/keyboards/40percentclub/luddite/rules.mk b/keyboards/40percentclub/luddite/rules.mk
index 8dff21f9ab..02e0abe9a6 100644
--- a/keyboards/40percentclub/luddite/rules.mk
+++ b/keyboards/40percentclub/luddite/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   comment out to disable the options.
 #
diff --git a/keyboards/40percentclub/mf68/keymaps/mf68_ble/rules.mk b/keyboards/40percentclub/mf68/keymaps/mf68_ble/rules.mk
index 2509d0bf4e..2a4ff658cf 100644
--- a/keyboards/40percentclub/mf68/keymaps/mf68_ble/rules.mk
+++ b/keyboards/40percentclub/mf68/keymaps/mf68_ble/rules.mk
@@ -1,64 +1,6 @@
-# Overrides for Feather 32u4 Bluefruit
-# MCU name
-MCU = atmega32u4
-
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
+# Processor frequency
 F_CPU = 8000000
 
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Bootloader selection
-#   Teensy       halfkay
-#   Pro Micro    caterina
-#   Atmel DFU    atmel-dfu
-#   LUFA DFU     lufa-dfu
-#   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
-BOOTLOADER = caterina
-
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/mf68/rules.mk b/keyboards/40percentclub/mf68/rules.mk
index 27642d8604..1113d34a23 100644
--- a/keyboards/40percentclub/mf68/rules.mk
+++ b/keyboards/40percentclub/mf68/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/nano/rules.mk b/keyboards/40percentclub/nano/rules.mk
index e3c97e0d44..d55a40889b 100644
--- a/keyboards/40percentclub/nano/rules.mk
+++ b/keyboards/40percentclub/nano/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically
diff --git a/keyboards/40percentclub/nein/rules.mk b/keyboards/40percentclub/nein/rules.mk
index 1e3748287c..7805bac176 100644
--- a/keyboards/40percentclub/nein/rules.mk
+++ b/keyboards/40percentclub/nein/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/nori/rules.mk b/keyboards/40percentclub/nori/rules.mk
index f52135379a..75aa26e496 100644
--- a/keyboards/40percentclub/nori/rules.mk
+++ b/keyboards/40percentclub/nori/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/40percentclub/tomato/rules.mk b/keyboards/40percentclub/tomato/rules.mk
index 844ff99827..a3e442e09e 100644
--- a/keyboards/40percentclub/tomato/rules.mk
+++ b/keyboards/40percentclub/tomato/rules.mk
@@ -1,62 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   comment out to disable the options.
 #
diff --git a/keyboards/40percentclub/ut47/rules.mk b/keyboards/40percentclub/ut47/rules.mk
index 7495f5edda..043a62906a 100644
--- a/keyboards/40percentclub/ut47/rules.mk
+++ b/keyboards/40percentclub/ut47/rules.mk
@@ -1,63 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/4by3/rules.mk b/keyboards/4by3/rules.mk
index 7d22998333..912449366a 100644
--- a/keyboards/4by3/rules.mk
+++ b/keyboards/4by3/rules.mk
@@ -1,5 +1,15 @@
-MCU 				= atmega32u4
-BOOTLOADER 			= caterina
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
 
 EXTRAKEY_ENABLE 	= yes
 NKRO_ENABLE 		= yes
diff --git a/keyboards/6ball/keymaps/default/rules.mk b/keyboards/6ball/keymaps/default/rules.mk
deleted file mode 100644
index e69de29bb2..0000000000
--- a/keyboards/6ball/keymaps/default/rules.mk
+++ /dev/null
diff --git a/keyboards/6ball/rules.mk b/keyboards/6ball/rules.mk
index 89d1324809..05a642e6e9 100644
--- a/keyboards/6ball/rules.mk
+++ b/keyboards/6ball/rules.mk
@@ -1,49 +1,15 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-#   Teensy halfKay   512
-#   Teensy++ halfKay 1024
-#   Atmel DFU loader 4096
-#   LUFA bootloader  4096
-#   USBaspLoader     2048
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
 
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in 
diff --git a/keyboards/8pack/rules.mk b/keyboards/8pack/rules.mk
index 97496c8f22..625f8b201f 100644
--- a/keyboards/8pack/rules.mk
+++ b/keyboards/8pack/rules.mk
@@ -1,48 +1,14 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
 # Build Options
diff --git a/keyboards/9key/rules.mk b/keyboards/9key/rules.mk
index eb82006fbd..5e6e882e9c 100644
--- a/keyboards/9key/rules.mk
+++ b/keyboards/9key/rules.mk
@@ -1,49 +1,15 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-#   Teensy halfKay   512
-#   Teensy++ halfKay 1024
-#   Atmel DFU loader 4096
-#   LUFA bootloader  4096
-#   USBaspLoader     2048
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
 
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in