From 5846b40f7444af96b0d8ddf3af9b558193c2475d Mon Sep 17 00:00:00 2001
From: Nick Brassel <nick@tzarc.org>
Date: Sat, 2 Jul 2022 15:18:50 +1000
Subject: RP2040 emulated EEPROM. (#17519)

---
 builddefs/common_features.mk | 10 +++++++++-
 builddefs/mcu_selection.mk   |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

(limited to 'builddefs')

diff --git a/builddefs/common_features.mk b/builddefs/common_features.mk
index 2edc1bdef0..c11e5688e3 100644
--- a/builddefs/common_features.mk
+++ b/builddefs/common_features.mk
@@ -220,6 +220,11 @@ else
         # True EEPROM on STM32L0xx, L1xx
         OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_STM32_L0_L1
         SRC += eeprom_driver.c eeprom_stm32_L0_L1.c
+      else ifneq ($(filter $(MCU_SERIES),RP2040),)
+		# Wear-leveling EEPROM implementation, backed by RP2040 flash
+		OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_WEAR_LEVELING
+		SRC += eeprom_driver.c eeprom_wear_leveling.c
+        WEAR_LEVELING_DRIVER = rp2040_flash
       else ifneq ($(filter $(MCU_SERIES),KL2x K20x),)
         # Teensy EEPROM implementations
         OPT_DEFS += -DEEPROM_TEENSY
@@ -241,7 +246,7 @@ else
   endif
 endif
 
-VALID_WEAR_LEVELING_DRIVER_TYPES := custom embedded_flash spi_flash legacy
+VALID_WEAR_LEVELING_DRIVER_TYPES := custom embedded_flash spi_flash rp2040_flash legacy
 WEAR_LEVELING_DRIVER ?= none
 ifneq ($(strip $(WEAR_LEVELING_DRIVER)),none)
   ifeq ($(filter $(WEAR_LEVELING_DRIVER),$(VALID_WEAR_LEVELING_DRIVER_TYPES)),)
@@ -262,6 +267,9 @@ ifneq ($(strip $(WEAR_LEVELING_DRIVER)),none)
       FLASH_DRIVER := spi
       SRC += wear_leveling_flash_spi.c
       POST_CONFIG_H += $(DRIVER_PATH)/wear_leveling/wear_leveling_flash_spi_config.h
+    else ifeq ($(strip $(WEAR_LEVELING_DRIVER)), rp2040_flash)
+      SRC += wear_leveling_rp2040_flash.c
+      POST_CONFIG_H += $(DRIVER_PATH)/wear_leveling/wear_leveling_rp2040_flash_config.h
     else ifeq ($(strip $(WEAR_LEVELING_DRIVER)), legacy)
       COMMON_VPATH += $(PLATFORM_PATH)/$(PLATFORM_KEY)/$(DRIVER_DIR)/flash
       SRC += flash_stm32.c wear_leveling_legacy.c
diff --git a/builddefs/mcu_selection.mk b/builddefs/mcu_selection.mk
index d676e0c06a..135f663c14 100644
--- a/builddefs/mcu_selection.mk
+++ b/builddefs/mcu_selection.mk
@@ -135,7 +135,7 @@ ifneq ($(findstring RP2040, $(MCU)),)
   # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
   #   or <keyboard_dir>/ld/
   STARTUPLD_CONTRIB = $(CHIBIOS_CONTRIB)/os/common/startup/ARMCMx/compilers/GCC/ld
-  MCU_LDSCRIPT ?= RP2040_FLASH
+  MCU_LDSCRIPT ?= RP2040_FLASH_TIMECRIT
   LDFLAGS += -L $(STARTUPLD_CONTRIB)
 
   # Startup code to use
-- 
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