diff options
Diffstat (limited to 'scripts/Kconfig.mk')
| -rw-r--r-- | scripts/Kconfig.mk | 89 |
1 files changed, 28 insertions, 61 deletions
diff --git a/scripts/Kconfig.mk b/scripts/Kconfig.mk index 2bdc934..3db7a2f 100644 --- a/scripts/Kconfig.mk +++ b/scripts/Kconfig.mk @@ -6,15 +6,15 @@ # This file is the heart of the LumeOS build-time configuration system. # It mirrors the role of Linux's Kconfig + auto.conf pipeline: # -# 1. Developer edits `.config` (or copies from arch/$(ARCH)/defconfig) -# 2. This file reads `.config`, applies defaults for anything missing, +# 1. Developer edits `$(O)/.config` (or runs `make O=... defconfig`) +# 2. This file reads that configuration and applies missing defaults, # validates constraints, and exports two things: # a) KCPPFLAGS — a set of -DCONFIG_xxx=value flags for the compiler # b) $(BUILD)/generated/autoconf.h — the same values as C #defines # # Design Principles (matching Linux conventions): -# - Every CONFIG_ symbol has a default defined HERE, so a bare `make` -# with no .config still builds a sane kernel. +# - Every CONFIG_ symbol has a default defined HERE, so an empty output +# directory still builds a sane kernel. # - Boolean options use 'y' / 'n'. Numeric options are plain integers. # - The generated autoconf.h uses the exact same names so that # `#ifdef CONFIG_DEBUG` works identically in Makefile and C. @@ -23,7 +23,8 @@ # ------------------------------------------------------------------ # §1 Read user configuration (if it exists) # ------------------------------------------------------------------ --include .config +KCONFIG_CONFIG ?= $(BUILD)/.config +-include $(KCONFIG_CONFIG) # ------------------------------------------------------------------ # §2 Provide defaults for every CONFIG_ symbol @@ -143,42 +144,6 @@ endif # ------------------------------------------------------------------ AUTOCONF_H := $(BUILD)/generated/autoconf.h -define generate-autoconf - @mkdir -p $(dir $(AUTOCONF_H)) - @echo " GEN $(AUTOCONF_H)" - @echo "/* AUTO-GENERATED — DO NOT EDIT */" > $(AUTOCONF_H) - @echo "/* Generated by scripts/Kconfig.mk */" >> $(AUTOCONF_H) - @echo "#pragma once" >> $(AUTOCONF_H) - @echo "" >> $(AUTOCONF_H) - @echo "/* Platform */" >> $(AUTOCONF_H) - @echo "#define CONFIG_NR_CPUS $(CONFIG_NR_CPUS)" >> $(AUTOCONF_H) - @echo "" >> $(AUTOCONF_H) - @echo "/* Scheduler */" >> $(AUTOCONF_H) - @echo "#define CONFIG_HZ $(CONFIG_HZ)" >> $(AUTOCONF_H) - @echo "#define CONFIG_NR_PRIORITIES $(CONFIG_NR_PRIORITIES)" >> $(AUTOCONF_H) - @echo "#define CONFIG_DEFAULT_PRIORITY $(CONFIG_DEFAULT_PRIORITY)" >> $(AUTOCONF_H) - @echo "#define CONFIG_IDLE_PRIORITY $(CONFIG_IDLE_PRIORITY)" >> $(AUTOCONF_H) - @echo "#define CONFIG_DEFAULT_TIMESLICE $(CONFIG_DEFAULT_TIMESLICE)" >> $(AUTOCONF_H) - @echo "" >> $(AUTOCONF_H) - @echo "/* Memory Management */" >> $(AUTOCONF_H) - @echo "#define CONFIG_PAGE_SIZE $(CONFIG_PAGE_SIZE)" >> $(AUTOCONF_H) - @echo "#define CONFIG_MAX_ORDER $(CONFIG_MAX_ORDER)" >> $(AUTOCONF_H) - @echo "#define CONFIG_KERNEL_STACK_SIZE $(CONFIG_KERNEL_STACK_SIZE)" >> $(AUTOCONF_H) - @echo "" >> $(AUTOCONF_H) - @echo "/* Security */" >> $(AUTOCONF_H) - $(if $(filter y,$(CONFIG_KASLR)), @echo "#define CONFIG_KASLR 1" >> $(AUTOCONF_H)) - @echo "#define CONFIG_KASLR_POLICY_ID $(CONFIG_KASLR_POLICY_ID)" >> $(AUTOCONF_H) - @echo "#define CONFIG_KASLR_LOG_LEVEL $(CONFIG_KASLR_LOG_LEVEL)" >> $(AUTOCONF_H) - $(if $(filter y,$(CONFIG_STACK_CANARY)), @echo "#define CONFIG_STACK_CANARY 1" >> $(AUTOCONF_H)) - @echo "" >> $(AUTOCONF_H) - @echo "/* Debug */" >> $(AUTOCONF_H) - $(if $(filter y,$(CONFIG_DEBUG)), @echo "#define CONFIG_DEBUG 1" >> $(AUTOCONF_H)) - $(if $(filter y,$(CONFIG_DEBUG_LOCKS)), @echo "#define CONFIG_DEBUG_LOCKS 1" >> $(AUTOCONF_H)) - $(if $(filter y,$(CONFIG_SELFTEST)), @echo "#define CONFIG_SELFTEST 1" >> $(AUTOCONF_H)) - $(if $(filter y,$(CONFIG_KLOG)), @echo "#define CONFIG_KLOG 1" >> $(AUTOCONF_H)) - $(if $(filter y,$(CONFIG_KERNEL_COMPRESSED)), @echo "#define CONFIG_KERNEL_COMPRESSED 1" >> $(AUTOCONF_H)) -endef - # ------------------------------------------------------------------ # §6 Utility targets # ------------------------------------------------------------------ @@ -187,29 +152,31 @@ endef .PHONY: defconfig savedefconfig showconfig defconfig: - @echo " DEFCFG arch/$(CONFIG_ARCH)/defconfig → .config" - @cp arch/$(CONFIG_ARCH)/defconfig .config + @echo " DEFCFG arch/$(CONFIG_ARCH)/defconfig → $(KCONFIG_CONFIG)" + @mkdir -p $(dir $(KCONFIG_CONFIG)) + @cp arch/$(CONFIG_ARCH)/defconfig $(KCONFIG_CONFIG) # 'make savedefconfig' — save current effective config savedefconfig: - @echo " SAVE .config" - @echo "# LumeOS Kernel Configuration (saved $$(date +%Y-%m-%d))" > .config - @echo "CONFIG_ARCH = $(CONFIG_ARCH)" >> .config - @echo "CONFIG_NR_CPUS = $(CONFIG_NR_CPUS)" >> .config - @echo "CONFIG_HZ = $(CONFIG_HZ)" >> .config - @echo "CONFIG_NR_PRIORITIES = $(CONFIG_NR_PRIORITIES)" >> .config - @echo "CONFIG_PAGE_SIZE = $(CONFIG_PAGE_SIZE)" >> .config - @echo "CONFIG_MAX_ORDER = $(CONFIG_MAX_ORDER)" >> .config - @echo "CONFIG_KERNEL_STACK_SIZE = $(CONFIG_KERNEL_STACK_SIZE)" >> .config - @echo "CONFIG_KASLR = $(CONFIG_KASLR)" >> .config - @echo "CONFIG_KASLR_POLICY_ID = $(CONFIG_KASLR_POLICY_ID)" >> .config - @echo "CONFIG_KASLR_LOG_LEVEL = $(CONFIG_KASLR_LOG_LEVEL)" >> .config - @echo "CONFIG_STACK_CANARY = $(CONFIG_STACK_CANARY)" >> .config - @echo "CONFIG_DEBUG = $(CONFIG_DEBUG)" >> .config - @echo "CONFIG_DEBUG_LOCKS = $(CONFIG_DEBUG_LOCKS)" >> .config - @echo "CONFIG_SELFTEST = $(CONFIG_SELFTEST)" >> .config - @echo "CONFIG_KLOG = $(CONFIG_KLOG)" >> .config - @echo "CONFIG_KERNEL_COMPRESSED = $(CONFIG_KERNEL_COMPRESSED)" >> .config + @echo " SAVE $(KCONFIG_CONFIG)" + @mkdir -p $(dir $(KCONFIG_CONFIG)) + @echo "# LumeOS Kernel Configuration (saved $$(date +%Y-%m-%d))" > $(KCONFIG_CONFIG) + @echo "CONFIG_ARCH = $(CONFIG_ARCH)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_NR_CPUS = $(CONFIG_NR_CPUS)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_HZ = $(CONFIG_HZ)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_NR_PRIORITIES = $(CONFIG_NR_PRIORITIES)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_PAGE_SIZE = $(CONFIG_PAGE_SIZE)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_MAX_ORDER = $(CONFIG_MAX_ORDER)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KERNEL_STACK_SIZE = $(CONFIG_KERNEL_STACK_SIZE)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KASLR = $(CONFIG_KASLR)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KASLR_POLICY_ID = $(CONFIG_KASLR_POLICY_ID)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KASLR_LOG_LEVEL = $(CONFIG_KASLR_LOG_LEVEL)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_STACK_CANARY = $(CONFIG_STACK_CANARY)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_DEBUG = $(CONFIG_DEBUG)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_DEBUG_LOCKS = $(CONFIG_DEBUG_LOCKS)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_SELFTEST = $(CONFIG_SELFTEST)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KLOG = $(CONFIG_KLOG)" >> $(KCONFIG_CONFIG) + @echo "CONFIG_KERNEL_COMPRESSED = $(CONFIG_KERNEL_COMPRESSED)" >> $(KCONFIG_CONFIG) # 'make showconfig' — print effective configuration showconfig: |