From 83e978da1fba4cfbb76dc22e05aa656dba8c1c3e Mon Sep 17 00:00:00 2001
From: Joel Challis <git@zvecr.com>
Date: Sat, 16 Oct 2021 02:58:48 +0100
Subject: [PATCH] Further tidy up of STM32 eeprom emulation (#14591)

---
 common_features.mk                    | 39 +++------------------------
 quantum/mcu_selection.mk              |  5 ++++
 tmk_core/common/chibios/flash_stm32.c |  4 +--
 3 files changed, 10 insertions(+), 38 deletions(-)

diff --git a/common_features.mk b/common_features.mk
index 3fe834219f..6a9754e58e 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -153,51 +153,18 @@ else
     ifeq ($(PLATFORM),AVR)
       # Automatically provided by avr-libc, nothing required
     else ifeq ($(PLATFORM),CHIBIOS)
-      ifeq ($(MCU_SERIES), STM32F3xx)
+      ifneq ($(filter STM32F3xx_% STM32F1xx_% %_STM32F401xC %_STM32F401xE %_STM32F405xG %_STM32F411xE %_STM32F072xB %_STM32F042x6, $(MCU_SERIES)_$(MCU_LDSCRIPT)),)
         OPT_DEFS += -DEEPROM_DRIVER
         COMMON_VPATH += $(DRIVER_PATH)/eeprom
         SRC += eeprom_driver.c
         SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
         SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
-        OPT_DEFS += -DEEPROM_EMU_STM32F303xC
-      else ifeq ($(MCU_SERIES), STM32F1xx)
-        OPT_DEFS += -DEEPROM_DRIVER
-        COMMON_VPATH += $(DRIVER_PATH)/eeprom
-        SRC += eeprom_driver.c
-        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
-        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
-        OPT_DEFS += -DEEPROM_EMU_STM32F103xB
-      else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F072xB)
-        OPT_DEFS += -DEEPROM_DRIVER
-        COMMON_VPATH += $(DRIVER_PATH)/eeprom
-        SRC += eeprom_driver.c
-        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
-        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
-        OPT_DEFS += -DEEPROM_EMU_STM32F072xB
-      else ifneq ($(filter $(MCU_SERIES)_$(MCU_LDSCRIPT),STM32F4xx_STM32F401xC STM32F4xx_STM32F401xE STM32F4xx_STM32F411xE STM32F4xx_STM32F405xG),)
-        OPT_DEFS += -DEEPROM_DRIVER
-        COMMON_VPATH += $(DRIVER_PATH)/eeprom
-        SRC += eeprom_driver.c
-        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
-        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
-        OPT_DEFS += -DEEPROM_EMU_STM32F401xC
-      else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F042x6)
-        # Stack sizes: Since this chip has limited RAM capacity, the stack area needs to be reduced.
-        # This ensures that the EEPROM page buffer fits into RAM
-        USE_PROCESS_STACKSIZE = 0x600
-        USE_EXCEPTIONS_STACKSIZE = 0x300
-
-        OPT_DEFS += -DEEPROM_DRIVER
-        COMMON_VPATH += $(DRIVER_PATH)/eeprom
-        SRC += eeprom_driver.c
-        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
-        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
-        OPT_DEFS += -DEEPROM_EMU_STM32F042x6
       else ifneq ($(filter $(MCU_SERIES),STM32L0xx STM32L1xx),)
         OPT_DEFS += -DEEPROM_DRIVER
         COMMON_VPATH += $(DRIVER_PATH)/eeprom
         COMMON_VPATH += $(PLATFORM_PATH)/$(PLATFORM_KEY)/$(DRIVER_DIR)/eeprom
-        SRC += eeprom_driver.c eeprom_stm32_L0_L1.c
+        SRC += eeprom_driver.c
+        SRC += eeprom_stm32_L0_L1.c
       else
         # This will effectively work the same as "transient" if not supported by the chip
         SRC += $(PLATFORM_COMMON_DIR)/eeprom_teensy.c
diff --git a/quantum/mcu_selection.mk b/quantum/mcu_selection.mk
index 92e3a7c923..622b4a82f8 100644
--- a/quantum/mcu_selection.mk
+++ b/quantum/mcu_selection.mk
@@ -138,6 +138,11 @@ ifneq ($(findstring STM32F042, $(MCU)),)
 
   # UF2 settings
   UF2_FAMILY ?= STM32F0
+
+  # Stack sizes: Since this chip has limited RAM capacity, the stack area needs to be reduced.
+  # This ensures that the EEPROM page buffer fits into RAM
+  USE_PROCESS_STACKSIZE = 0x600
+  USE_EXCEPTIONS_STACKSIZE = 0x300
 endif
 
 ifneq ($(findstring STM32F072, $(MCU)),)
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
index 8f10903d3d..35fb0eebdb 100644
--- a/tmk_core/common/chibios/flash_stm32.c
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -19,11 +19,11 @@
 #include <hal.h>
 #include "flash_stm32.h"
 
-#if defined(EEPROM_EMU_STM32F103xB)
+#if defined(STM32F1XX)
 #    define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
 #endif
 
-#if defined(EEPROM_EMU_STM32F401xC)
+#if defined(STM32F4XX)
 #    define FLASH_SR_PGERR (FLASH_SR_PGSERR | FLASH_SR_PGPERR | FLASH_SR_PGAERR)
 
 #    define FLASH_KEY1 0x45670123U