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-rw-r--r--quantum/nvm/rules.mk31
1 files changed, 31 insertions, 0 deletions
diff --git a/quantum/nvm/rules.mk b/quantum/nvm/rules.mk
new file mode 100644
index 0000000000..c9c1fabfd4
--- /dev/null
+++ b/quantum/nvm/rules.mk
@@ -0,0 +1,31 @@
+# Copyright 2024 Nick Brassel (@tzarc)
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+VPATH += $(QUANTUM_DIR)/nvm
+
+VALID_NVM_DRIVERS := eeprom custom none
+
+NVM_DRIVER ?= eeprom
+
+ifeq ($(filter $(NVM_DRIVER),$(VALID_NVM_DRIVERS)),)
+ $(call CATASTROPHIC_ERROR,Invalid NVM_DRIVER,NVM_DRIVER="$(NVM_DRIVER)" is not a valid NVM driver)
+else
+
+ # If we don't want one, fake it with transient eeprom.
+ ifeq ($(NVM_DRIVER),none)
+ NVM_DRIVER := eeprom
+ EEPROM_DRIVER := transient
+ endif
+
+ NVM_DRIVER_UPPER := $(shell echo $(NVM_DRIVER) | tr '[:lower:]' '[:upper:]')
+ NVM_DRIVER_LOWER := $(shell echo $(NVM_DRIVER) | tr '[:upper:]' '[:lower:]')
+
+ OPT_DEFS += -DNVM_DRIVER_$(NVM_DRIVER_UPPER) -DNVM_DRIVER="$(NVM_DRIVER)"
+
+ ifneq ("$(wildcard $(QUANTUM_DIR)/nvm/$(NVM_DRIVER_LOWER))","")
+ COMMON_VPATH += $(QUANTUM_DIR)/nvm/$(NVM_DRIVER_LOWER)
+ endif
+
+ QUANTUM_SRC += nvm_eeconfig.c
+
+endif