12 files changed, 32 insertions, 48 deletions
diff --git a/keyboards/matrix/abelx/abelx.c b/keyboards/matrix/abelx/abelx.c
index 77e749ee40..9585948e0c 100644
--- a/keyboards/matrix/abelx/abelx.c
+++ b/keyboards/matrix/abelx/abelx.c
@@ -97,3 +97,8 @@ void shutdown_user(void)
     // set the magic number for resetting to the bootloader
     *(uint32_t *)(&(RTCD1.rtc->BKP0R)) = REBOOT_MAGIC;
 }
+
+void bootloader_jump(void) {
+    shutdown_user();
+    NVIC_SystemReset();
+}
diff --git a/keyboards/matrix/abelx/boards/abelx_bd/board.c b/keyboards/matrix/abelx/boards/abelx_bd/board.c
index 68cf23cddc..db40a8e37b 100644
--- a/keyboards/matrix/abelx/boards/abelx_bd/board.c
+++ b/keyboards/matrix/abelx/boards/abelx_bd/board.c
@@ -208,9 +208,6 @@ static void stm32_gpio_init(void) {
  *          else.
  */
 void __early_init(void) {
-  extern void enter_bootloader_mode_if_requested(void);
-  enter_bootloader_mode_if_requested();
-
   stm32_gpio_init();
   stm32_clock_init();
 }
diff --git a/keyboards/matrix/abelx/bootloader_defs.h b/keyboards/matrix/abelx/bootloader_defs.h
deleted file mode 100644
index 20b8f73e6f..0000000000
--- a/keyboards/matrix/abelx/bootloader_defs.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* Address for jumping to bootloader on STM32 chips. */
-/* It is chip dependent, the correct number can be looked up here:
- * http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf
- * This also requires a patch to chibios:
- *  <tmk_dir>/tmk_core/tool/chibios/ch-bootloader-jump.patch
- */
-#define STM32_BOOTLOADER_ADDRESS 0x1FFF0000
diff --git a/keyboards/matrix/abelx/rules.mk b/keyboards/matrix/abelx/rules.mk
index 98b6cfa65e..7a5d01e5cb 100644
--- a/keyboards/matrix/abelx/rules.mk
+++ b/keyboards/matrix/abelx/rules.mk
@@ -25,18 +25,13 @@ ARMV = 7
 
 USE_FPU = yes
 
-# Vector table for application
-# 0x00000000-0x00001000 area is occupied by bootlaoder.*/
-OPT_DEFS =
-
-# Options to pass to dfu-util when flashing
-#DFU_ARGS = -d 0483:df11 -a 0 -s 0x08000000:leave
-#DFU_SUFFIX_ARGS = -p DF11 -v 0483
+# Bootloader selection
+BOOTLOADER = custom
 
 # Build Options
 #   change yes to no to disable
 #
-BOOTMAGIC_ENABLE = yes      # Virtual DIP switch configuration
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
 MOUSEKEY_ENABLE = yes       # Mouse keys
 EXTRAKEY_ENABLE = yes       # Audio control and System control
 CONSOLE_ENABLE = no         # Console for debug
@@ -44,7 +39,6 @@ COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = no            # Enable N-Key Rollover
 BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
 RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
-BLUETOOTH_ENABLE = no       # Enable Bluetooth
 AUDIO_ENABLE = no           # Audio output
 NO_USB_STARTUP_CHECK = yes  # Disable initialization only when usb is plugged in
 
diff --git a/keyboards/matrix/m12og/rev1/rev1.c b/keyboards/matrix/m12og/rev1/rev1.c
index e3277bee27..53183c7d2d 100644
--- a/keyboards/matrix/m12og/rev1/rev1.c
+++ b/keyboards/matrix/m12og/rev1/rev1.c
@@ -20,6 +20,11 @@ void board_init(void) {
     writePinLow(A8);
 }
 
+void bootloader_jump(void) {
+    // This board doesn't use the standard DFU bootloader, and no information is available regarding how to enter bootloader mode. All we can do here is reset.
+    NVIC_SystemReset();
+}
+
 void keyboard_post_init_kb(void) {
     rgblight_enable_noeeprom();
     rgblight_sethsv_noeeprom(5, 255, 255);
diff --git a/keyboards/matrix/m12og/rev1/rules.mk b/keyboards/matrix/m12og/rev1/rules.mk
index 0e0584b8c9..d9733e8c5e 100644
--- a/keyboards/matrix/m12og/rev1/rules.mk
+++ b/keyboards/matrix/m12og/rev1/rules.mk
@@ -5,6 +5,9 @@ MCU_LDSCRIPT = m12og_v1
 
 BOARD = m12og_v1
 
+# Bootloader selection
+BOOTLOADER = custom
+
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/matrix/m20add/bootloader_defs.h b/keyboards/matrix/m20add/bootloader_defs.h
deleted file mode 100644
index 4da3d39a32..0000000000
--- a/keyboards/matrix/m20add/bootloader_defs.h
+++ /dev/null
@@ -1,5 +0,0 @@
-/* Address for jumping to bootloader on STM32 chips. */
-/* It is chip dependent, the correct number can be looked up here:
- * http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf
- */
-#define STM32_BOOTLOADER_ADDRESS 0x1FFF0000
diff --git a/keyboards/matrix/m20add/m20add.c b/keyboards/matrix/m20add/m20add.c
index 21f4f9b1ba..cdcafb9779 100644
--- a/keyboards/matrix/m20add/m20add.c
+++ b/keyboards/matrix/m20add/m20add.c
@@ -53,28 +53,14 @@ bool led_update_kb(led_t led_state) {
     return res;
 }
 
-// override the default implementation to avoid re-initialization
-void i2c_init(void)
-{
-    static bool initialized = false;
-    if (initialized) {
-        return;
-    } else {
-        initialized = true;
-    }
-
-    // Try releasing special pins for a short time
-    palSetLineMode(I2C1_SCL_PIN, PAL_MODE_INPUT);
-    palSetLineMode(I2C1_SDA_PIN, PAL_MODE_INPUT);
-
-    chThdSleepMilliseconds(10);
-    palSetLineMode(I2C1_SCL_PIN, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
-    palSetLineMode(I2C1_SDA_PIN, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
-}
-
 #define REBOOT_MAGIC 0x41544B42
 void shutdown_user(void)
 {
     // set the magic number for resetting to the bootloader
     *(uint32_t *)(&(RTCD1.rtc->BKP0R)) = REBOOT_MAGIC;
 }
+
+void bootloader_jump(void) {
+    shutdown_user();
+    NVIC_SystemReset();
+}
diff --git a/keyboards/matrix/m20add/rules.mk b/keyboards/matrix/m20add/rules.mk
index 1ecbd9d308..86bd6b9371 100644
--- a/keyboards/matrix/m20add/rules.mk
+++ b/keyboards/matrix/m20add/rules.mk
@@ -10,6 +10,9 @@ MCU_LDSCRIPT = m20add_boot
 #  or <this_dir>/boards
 BOARD = ST_NUCLEO64_F411RE
 
+# Bootloader selection
+BOOTLOADER = custom
+
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/matrix/noah/bootloader_defs.h b/keyboards/matrix/noah/bootloader_defs.h
deleted file mode 100644
index 4da3d39a32..0000000000
--- a/keyboards/matrix/noah/bootloader_defs.h
+++ /dev/null
@@ -1,5 +0,0 @@
-/* Address for jumping to bootloader on STM32 chips. */
-/* It is chip dependent, the correct number can be looked up here:
- * http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf
- */
-#define STM32_BOOTLOADER_ADDRESS 0x1FFF0000
diff --git a/keyboards/matrix/noah/noah.c b/keyboards/matrix/noah/noah.c
index 2143dee3be..89c25707af 100644
--- a/keyboards/matrix/noah/noah.c
+++ b/keyboards/matrix/noah/noah.c
@@ -4,6 +4,11 @@
 
 #include "noah.h"
 
+void bootloader_jump(void) {
+    // This board doesn't use the standard DFU bootloader, and no information is available regarding how to enter bootloader mode. All we can do here is reset.
+    NVIC_SystemReset();
+}
+
 #ifdef RGBLIGHT_ENABLE
 #include <string.h>
 #include "rgblight.h"
diff --git a/keyboards/matrix/noah/rules.mk b/keyboards/matrix/noah/rules.mk
index b9f642e8cd..7971d628d6 100644
--- a/keyboards/matrix/noah/rules.mk
+++ b/keyboards/matrix/noah/rules.mk
@@ -10,6 +10,9 @@ MCU_LDSCRIPT = noah_boot
 #  or <this_dir>/boards
 BOARD = ST_NUCLEO64_F411RE
 
+# Bootloader selection
+BOOTLOADER = custom
+
 # Build Options
 #   change yes to no to disable
 #