1# 
2# Copyright (C) 2006-2011 OpenWrt.org
3#
4# This is free software, licensed under the GNU General Public License v2.
5# See /LICENSE for more information.
6#
7
8ifeq ($(__target_inc),)
9  include $(INCLUDE_DIR)/target.mk
10endif
11
12ifeq ($(DUMP),1)
13  KERNEL?=<KERNEL>
14  BOARD?=<BOARD>
15  LINUX_VERSION?=<LINUX_VERSION>
16  LINUX_VERMAGIC?=<LINUX_VERMAGIC>
17else
18  ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
19    export GCC_HONOUR_COPTS=s
20  endif
21
22  LINUX_KMOD_SUFFIX=ko
23
24  ifneq (,$(findstring uml,$(BOARD)))
25    KERNEL_CC?=$(HOSTCC)
26    KERNEL_CROSS?=
27  else
28    KERNEL_CC?=$(TARGET_CC)
29    KERNEL_CROSS?=$(TARGET_CROSS)
30  endif
31
32  ifeq ($(TARGET_BUILD),1)
33    PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
34    FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
35  endif
36  KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
37  LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
38
39  LINUX_SRC_DIR := $(LINUX_DIR)/sourcecode
40
41  LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
42  LINUX_VERMAGIC:=$(if $(CONFIG_KERNEL_MODVERSIONS),modversions,$(LINUX_VERMAGIC))
43  LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
44
45  LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
46  ifneq ($(findstring -rc,$(LINUX_VERSION)),)
47    LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
48  endif
49
50  MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
51  TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
52
53  LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
54
55  LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
56  TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
57  LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
58
59  ifneq ($(TARGET_BUILD),1)
60    PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
61  endif
62endif
63
64ifneq (,$(findstring uml,$(BOARD)))
65  LINUX_KARCH=um
66else
67  ifeq (,$(LINUX_KARCH))
68    LINUX_KARCH=$(strip $(subst i386,x86,$(subst armeb,arm,$(subst mipsel,mips,$(subst mips64,mips,$(subst mips64el,mips,$(subst sh2,sh,$(subst sh3,sh,$(subst sh4,sh,$(ARCH))))))))))
69  endif
70endif
71
72
73define KernelPackage/Defaults
74  FILES:=
75  AUTOLOAD:=
76endef
77
78define ModuleAutoLoad
79	$(SH_FUNC) \
80	export modules=; \
81	add_module() { \
82		priority="$$$$$$$$1"; \
83		mods="$$$$$$$$2"; \
84		boot="$$$$$$$$3"; \
85		shift 3; \
86		for mod in $$$$$$$$mods; do \
87			if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
88				mkdir -p $(2)/etc/modules.d; \
89				echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
90			fi; \
91		done; \
92		if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
93			if [ "$$$$$$$$boot" = "1" ]; then \
94				mkdir -p $(2)/etc/modules-boot.d; \
95				ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
96			fi; \
97			modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
98		fi; \
99	}; \
100	$(3) \
101	if [ -n "$$$$$$$$modules" ]; then \
102		mkdir -p $(2)/etc/modules.d; \
103		mkdir -p $(2)/CONTROL; \
104		echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
105		echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
106		echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
107		echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
108		chmod 0755 $(2)/CONTROL/postinst; \
109	fi
110endef
111
112ifeq ($(DUMP)$(TARGET_BUILD),)
113  -include $(LINUX_DIR)/.config
114endif
115
116define KernelPackage/depends
117  $(STAMP_BUILT): $(LINUX_DIR)/.config
118  define KernelPackage/depends
119  endef
120endef
121
122define KernelPackage
123  NAME:=$(1)
124  $(eval $(call Package/Default))
125  $(eval $(call KernelPackage/Defaults))
126  $(eval $(call KernelPackage/$(1)))
127  $(eval $(call KernelPackage/$(1)/$(BOARD)))
128
129  define Package/kmod-$(1)
130    TITLE:=$(TITLE)
131    SECTION:=kernel
132    CATEGORY:=Kernel modules
133    DESCRIPTION:=$(DESCRIPTION)
134    EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
135    VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
136    $(call KernelPackage/$(1))
137    $(call KernelPackage/$(1)/$(BOARD))
138  endef
139
140  ifdef KernelPackage/$(1)/description
141    define Package/kmod-$(1)/description
142$(call KernelPackage/$(1)/description)
143    endef
144  endif
145
146  ifdef KernelPackage/$(1)/config
147    define Package/kmod-$(1)/config
148$(call KernelPackage/$(1)/config)
149    endef
150  endif
151
152  $(call KernelPackage/depends)
153
154  $(shell [ -x $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/sourcecode/scripts/gcc-wrapper.py ] \
155	  || chmod +x $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/sourcecode/scripts/gcc-wrapper.py)
156
157  ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
158    ifneq ($(strip $(FILES)),)
159      define Package/kmod-$(1)/install
160		  @for mod in $$(FILES); do \
161			if [ -e $$$$$$$$mod ]; then \
162				mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
163				$(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
164			elif [ -e "$(LINUX_DIR)/modules.builtin" ]; then \
165				if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
166					echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
167				else \
168					echo "ERROR: module '$$$$$$$$mod' is missing."; \
169					exit 1; \
170				fi; \
171			else \
172				echo "WARNING: module '$$$$$$$$mod' missing and modules.builtin not available, assuming built-in."; \
173			fi; \
174		  done;
175		  $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
176		  $(call KernelPackage/$(1)/install,$$(1))
177      endef
178    endif
179  $(if $(CONFIG_PACKAGE_kmod-$(1)),
180    else
181      compile: kmod-$(1)-unavailable
182      kmod-$(1)-unavailable:
183		@echo "WARNING: kmod-$(1) is not available in the kernel config"
184  )
185  endif
186  $$(eval $$(call BuildPackage,kmod-$(1)))
187
188  $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
189endef
190
191define AutoLoad
192  add_module "$(1)" "$(2)" "$(3)";
193endef
194
195version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
196kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) ))
197
198ifdef DUMP
199  kernel_version_cmp=
200else
201  kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
202endif
203
204CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
205
206kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
207kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
208kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
209kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
210kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
211
212