Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
Sam Ravnborg | f77bf01 | 2007-10-15 22:25:06 +0200 | [diff] [blame] | 2 | # Backward compatibility |
| 3 | asflags-y += $(EXTRA_AFLAGS) |
| 4 | ccflags-y += $(EXTRA_CFLAGS) |
| 5 | cppflags-y += $(EXTRA_CPPFLAGS) |
| 6 | ldflags-y += $(EXTRA_LDFLAGS) |
| 7 | |
Cao jin | 8fdc3fb | 2017-10-09 11:49:11 +0800 | [diff] [blame] | 8 | # flags that take effect in current and sub directories |
Masahiro Yamada | 4e13d47 | 2017-10-10 20:43:21 +0900 | [diff] [blame] | 9 | KBUILD_AFLAGS += $(subdir-asflags-y) |
| 10 | KBUILD_CFLAGS += $(subdir-ccflags-y) |
Sam Ravnborg | 720097d | 2009-04-19 11:04:26 +0200 | [diff] [blame] | 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | # Figure out what we need to build from the various variables |
| 13 | # =========================================================================== |
| 14 | |
| 15 | # When an object is listed to be built compiled-in and modular, |
| 16 | # only build the compiled-in version |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | obj-m := $(filter-out $(obj-y),$(obj-m)) |
| 18 | |
| 19 | # Libraries are always collected in one lib file. |
| 20 | # Filter out objects already built-in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) |
| 22 | |
Masahiro Yamada | 0a8820e | 2020-06-01 14:56:55 +0900 | [diff] [blame] | 23 | # Subdirectories we need to descend into |
| 24 | subdir-ym := $(sort $(subdir-y) $(subdir-m) \ |
| 25 | $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) |
| 26 | |
Masahiro Yamada | b2c8855 | 2020-06-01 14:57:00 +0900 | [diff] [blame] | 27 | # Handle objects in subdirs: |
| 28 | # - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and |
| 29 | # foo/modules.order |
| 30 | # - If we encounter foo/ in $(obj-m), replace it by foo/modules.order |
| 31 | # |
| 32 | # Generate modules.order to determine modorder. Unfortunately, we don't have |
| 33 | # information about ordering between -y and -m subdirs. Just put -y's first. |
| 34 | |
| 35 | ifdef need-modorder |
| 36 | obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) |
| 37 | else |
| 38 | obj-m := $(filter-out %/, $(obj-m)) |
| 39 | endif |
| 40 | |
Masahiro Yamada | 56d5893 | 2019-12-19 01:04:28 +0900 | [diff] [blame] | 41 | ifdef need-builtin |
Nicholas Piggin | f49821e | 2018-02-11 00:25:04 +1000 | [diff] [blame] | 42 | obj-y := $(patsubst %/, %/built-in.a, $(obj-y)) |
Masahiro Yamada | 56d5893 | 2019-12-19 01:04:28 +0900 | [diff] [blame] | 43 | else |
| 44 | obj-y := $(filter-out %/, $(obj-y)) |
| 45 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
Masahiro Yamada | 44f8719 | 2021-05-03 03:09:55 +0900 | [diff] [blame] | 47 | # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals |
| 48 | suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) |
| 49 | # List composite targets that are constructed by combining other targets |
| 50 | multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) |
| 51 | # List primitive targets that are compiled from source files |
| 52 | real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) |
| 53 | |
Masahiro Yamada | 33e84f2 | 2019-08-06 15:39:19 +0900 | [diff] [blame] | 54 | # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object |
Masahiro Yamada | 44f8719 | 2021-05-03 03:09:55 +0900 | [diff] [blame] | 55 | multi-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) |
| 56 | multi-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) |
Masahiro Yamada | a6601e0 | 2021-03-06 15:11:20 +0900 | [diff] [blame] | 57 | multi-obj-ym := $(multi-obj-y) $(multi-obj-m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Masahiro Yamada | f98fe47 | 2018-03-19 20:26:08 +0900 | [diff] [blame] | 59 | # Replace multi-part objects by their individual parts, |
| 60 | # including built-in.a from subdirectories |
Masahiro Yamada | 44f8719 | 2021-05-03 03:09:55 +0900 | [diff] [blame] | 61 | real-obj-y := $(call real-search, $(obj-y), .o, -objs -y) |
| 62 | real-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Masahiro Yamada | 5f2fb52 | 2020-02-02 01:49:24 +0900 | [diff] [blame] | 64 | always-y += $(always-m) |
| 65 | |
Masahiro Yamada | faabed2 | 2020-08-01 21:27:18 +0900 | [diff] [blame] | 66 | # hostprogs-always-y += foo |
| 67 | # ... is a shorthand for |
| 68 | # hostprogs += foo |
| 69 | # always-y += foo |
| 70 | hostprogs += $(hostprogs-always-y) $(hostprogs-always-m) |
| 71 | always-y += $(hostprogs-always-y) $(hostprogs-always-m) |
| 72 | |
| 73 | # userprogs-always-y is likewise. |
| 74 | userprogs += $(userprogs-always-y) $(userprogs-always-m) |
| 75 | always-y += $(userprogs-always-y) $(userprogs-always-m) |
| 76 | |
Masahiro Yamada | 7e7962d | 2017-11-05 14:30:53 +0900 | [diff] [blame] | 77 | # DTB |
| 78 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built |
Viresh Kumar | 9ca29e4 | 2021-03-10 11:05:29 +0530 | [diff] [blame] | 79 | dtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) |
| 80 | |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 81 | # Composite DTB (i.e. DTB constructed by overlay) |
| 82 | multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) |
| 83 | # Primitive DTB compiled from *.dts |
| 84 | real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) |
| 85 | # Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion) |
| 86 | base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs))) |
Rob Herring | 15d16d6 | 2021-03-10 11:05:30 +0530 | [diff] [blame] | 87 | |
Masahiro Yamada | 2047ace | 2021-01-20 15:23:51 +0900 | [diff] [blame] | 88 | always-y += $(dtb-y) |
Masahiro Yamada | 7e7962d | 2017-11-05 14:30:53 +0900 | [diff] [blame] | 89 | |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 90 | ifneq ($(CHECK_DTBS),) |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 91 | always-y += $(patsubst %.dtb,%.dt.yaml, $(real-dtb-y)) |
| 92 | always-y += $(patsubst %.dtbo,%.dt.yaml, $(real-dtb-y)) |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 93 | endif |
| 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | # Add subdir path |
| 96 | |
| 97 | extra-y := $(addprefix $(obj)/,$(extra-y)) |
Masahiro Yamada | 5f2fb52 | 2020-02-02 01:49:24 +0900 | [diff] [blame] | 98 | always-y := $(addprefix $(obj)/,$(always-y)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | targets := $(addprefix $(obj)/,$(targets)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
| 101 | lib-y := $(addprefix $(obj)/,$(lib-y)) |
Masahiro Yamada | f5f3368 | 2018-03-19 20:26:07 +0900 | [diff] [blame] | 102 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
| 103 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) |
Masahiro Yamada | a6601e0 | 2021-03-06 15:11:20 +0900 | [diff] [blame] | 104 | multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 105 | multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) |
| 106 | real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Masahiro Yamada | c0152e9 | 2018-03-19 18:01:27 +0900 | [diff] [blame] | 109 | # Finds the multi-part object the current object will be linked into. |
Masahiro Yamada | 1664a37 | 2019-12-19 17:33:28 +0900 | [diff] [blame] | 110 | # If the object belongs to two or more multi-part objects, list them all. |
Masahiro Yamada | a6601e0 | 2021-03-06 15:11:20 +0900 | [diff] [blame] | 111 | modname-multi = $(sort $(foreach m,$(multi-obj-ym),\ |
Masahiro Yamada | d445283 | 2021-05-03 03:09:57 +0900 | [diff] [blame] | 112 | $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) |
Masahiro Yamada | c0152e9 | 2018-03-19 18:01:27 +0900 | [diff] [blame] | 113 | |
Masahiro Yamada | 1664a37 | 2019-12-19 17:33:28 +0900 | [diff] [blame] | 114 | __modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) |
| 115 | |
| 116 | modname = $(subst $(space),:,$(__modname)) |
| 117 | modfile = $(addprefix $(obj)/,$(__modname)) |
Masahiro Yamada | c0152e9 | 2018-03-19 18:01:27 +0900 | [diff] [blame] | 118 | |
Masahiro Yamada | 54b8ae6 | 2019-08-30 13:34:01 +0900 | [diff] [blame] | 119 | # target with $(obj)/ and its suffix stripped |
| 120 | target-stem = $(basename $(patsubst $(obj)/%,%,$@)) |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | # These flags are needed for modversions and compiling, so we define them here |
Cao jin | 8fdc3fb | 2017-10-09 11:49:11 +0800 | [diff] [blame] | 123 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | # end up in (or would, if it gets compiled in) |
Sami Tolvanen | a8cccdd | 2020-12-11 10:46:24 -0800 | [diff] [blame] | 125 | name-fix-token = $(subst $(comma),_,$(subst -,_,$1)) |
| 126 | name-fix = $(call stringify,$(call name-fix-token,$1)) |
Michal Marek | b42841b | 2016-03-17 16:32:14 +0100 | [diff] [blame] | 127 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
Sami Tolvanen | a8cccdd | 2020-12-11 10:46:24 -0800 | [diff] [blame] | 128 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ |
| 129 | -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) |
Masahiro Yamada | 1664a37 | 2019-12-19 17:33:28 +0900 | [diff] [blame] | 130 | modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Masahiro Yamada | 15d5761 | 2020-07-07 18:21:16 +0900 | [diff] [blame] | 132 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
| 133 | $(filter-out $(ccflags-remove-y), \ |
| 134 | $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ |
| 135 | $(CFLAGS_$(target-stem).o)) |
| 136 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ |
| 137 | $(filter-out $(asflags-remove-y), \ |
| 138 | $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ |
| 139 | $(AFLAGS_$(target-stem).o)) |
Masahiro Yamada | 54b8ae6 | 2019-08-30 13:34:01 +0900 | [diff] [blame] | 140 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 142 | # |
| 143 | # Enable gcov profiling flags for a file, directory or for all files depending |
| 144 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL |
| 145 | # (in this order) |
| 146 | # |
| 147 | ifeq ($(CONFIG_GCOV_KERNEL),y) |
| 148 | _c_flags += $(if $(patsubst n%,, \ |
| 149 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ |
| 150 | $(CFLAGS_GCOV)) |
| 151 | endif |
| 152 | |
Andrey Ryabinin | 0b24bec | 2015-02-13 14:39:17 -0800 | [diff] [blame] | 153 | # |
| 154 | # Enable address sanitizer flags for kernel except some files or directories |
| 155 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) |
| 156 | # |
| 157 | ifeq ($(CONFIG_KASAN),y) |
Andrey Konovalov | 0fea6e9 | 2020-12-22 12:02:06 -0800 | [diff] [blame] | 158 | ifneq ($(CONFIG_KASAN_HW_TAGS),y) |
Andrey Ryabinin | 0b24bec | 2015-02-13 14:39:17 -0800 | [diff] [blame] | 159 | _c_flags += $(if $(patsubst n%,, \ |
| 160 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ |
Andrey Konovalov | 0e410e1 | 2018-02-06 15:36:00 -0800 | [diff] [blame] | 161 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
Andrey Ryabinin | 0b24bec | 2015-02-13 14:39:17 -0800 | [diff] [blame] | 162 | endif |
Andrey Konovalov | 0fea6e9 | 2020-12-22 12:02:06 -0800 | [diff] [blame] | 163 | endif |
Andrey Ryabinin | 0b24bec | 2015-02-13 14:39:17 -0800 | [diff] [blame] | 164 | |
Andrey Ryabinin | c6d3085 | 2016-01-20 15:00:55 -0800 | [diff] [blame] | 165 | ifeq ($(CONFIG_UBSAN),y) |
| 166 | _c_flags += $(if $(patsubst n%,, \ |
| 167 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ |
| 168 | $(CFLAGS_UBSAN)) |
| 169 | endif |
| 170 | |
Dmitry Vyukov | 5c9a875 | 2016-03-22 14:27:30 -0700 | [diff] [blame] | 171 | ifeq ($(CONFIG_KCOV),y) |
| 172 | _c_flags += $(if $(patsubst n%,, \ |
Vegard Nossum | a4691de | 2016-08-02 14:07:30 -0700 | [diff] [blame] | 173 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
Dmitry Vyukov | 5c9a875 | 2016-03-22 14:27:30 -0700 | [diff] [blame] | 174 | $(CFLAGS_KCOV)) |
| 175 | endif |
| 176 | |
Marco Elver | dfd402a | 2019-11-14 19:02:54 +0100 | [diff] [blame] | 177 | # |
| 178 | # Enable KCSAN flags except some files or directories we don't want to check |
| 179 | # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) |
| 180 | # |
| 181 | ifeq ($(CONFIG_KCSAN),y) |
| 182 | _c_flags += $(if $(patsubst n%,, \ |
| 183 | $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ |
| 184 | $(CFLAGS_KCSAN)) |
Marco Elver | 48c9e28 | 2021-11-30 12:44:14 +0100 | [diff] [blame] | 185 | # Some uninstrumented files provide implied barriers required to avoid false |
| 186 | # positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only. |
| 187 | _c_flags += $(if $(patsubst n%,, \ |
| 188 | $(KCSAN_INSTRUMENT_BARRIERS_$(basetarget).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \ |
| 189 | -D__KCSAN_INSTRUMENT_BARRIERS__) |
Marco Elver | dfd402a | 2019-11-14 19:02:54 +0100 | [diff] [blame] | 190 | endif |
| 191 | |
Masahiro Yamada | cdd750b | 2019-05-13 15:22:17 +0900 | [diff] [blame] | 192 | # $(srctree)/$(src) for including checkin headers from generated source files |
| 193 | # $(objtree)/$(obj) for including generated headers from checkin source files |
Masahiro Yamada | 58156ba | 2019-01-16 11:56:40 +0900 | [diff] [blame] | 194 | ifeq ($(KBUILD_EXTMOD),) |
Masahiro Yamada | 051f278 | 2019-07-06 12:07:12 +0900 | [diff] [blame] | 195 | ifdef building_out_of_srctree |
Masahiro Yamada | cdd750b | 2019-05-13 15:22:17 +0900 | [diff] [blame] | 196 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
| 197 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
| 198 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | endif |
Masahiro Yamada | 58156ba | 2019-01-16 11:56:40 +0900 | [diff] [blame] | 200 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Masahiro Yamada | eb27ea5 | 2019-08-19 17:58:43 +0900 | [diff] [blame] | 202 | part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
| 203 | quiet_modtag = $(if $(part-of-module),[M], ) |
| 204 | |
| 205 | modkern_cflags = \ |
| 206 | $(if $(part-of-module), \ |
| 207 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ |
Masahiro Yamada | 1664a37 | 2019-12-19 17:33:28 +0900 | [diff] [blame] | 208 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
Masahiro Yamada | eb27ea5 | 2019-08-19 17:58:43 +0900 | [diff] [blame] | 209 | |
| 210 | modkern_aflags = $(if $(part-of-module), \ |
| 211 | $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ |
| 212 | $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) |
| 213 | |
Masahiro Yamada | 30a7729 | 2020-04-23 23:23:53 +0900 | [diff] [blame] | 214 | c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
Masahiro Yamada | a95b37e | 2018-03-27 21:52:50 +0900 | [diff] [blame] | 215 | -include $(srctree)/include/linux/compiler_types.h \ |
Masahiro Yamada | cdd750b | 2019-05-13 15:22:17 +0900 | [diff] [blame] | 216 | $(_c_flags) $(modkern_cflags) \ |
Michal Marek | b42841b | 2016-03-17 16:32:14 +0100 | [diff] [blame] | 217 | $(basename_flags) $(modname_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Masahiro Yamada | 30a7729 | 2020-04-23 23:23:53 +0900 | [diff] [blame] | 219 | a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
Masahiro Yamada | cdd750b | 2019-05-13 15:22:17 +0900 | [diff] [blame] | 220 | $(_a_flags) $(modkern_aflags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Masahiro Yamada | 30a7729 | 2020-04-23 23:23:53 +0900 | [diff] [blame] | 222 | cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
Masahiro Yamada | cdd750b | 2019-05-13 15:22:17 +0900 | [diff] [blame] | 223 | $(_cpp_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
Masahiro Yamada | d503ac5 | 2018-08-24 08:20:39 +0900 | [diff] [blame] | 225 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Masahiro Yamada | 50f9dda | 2017-07-25 11:23:36 +0900 | [diff] [blame] | 227 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
| 228 | |
Masahiro Yamada | 30a7729 | 2020-04-23 23:23:53 +0900 | [diff] [blame] | 229 | dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ |
Masahiro Yamada | 50f9dda | 2017-07-25 11:23:36 +0900 | [diff] [blame] | 230 | $(addprefix -I,$(DTC_INCLUDE)) \ |
Stephen Warren | e570d7c | 2013-02-12 15:03:37 -0700 | [diff] [blame] | 231 | -undef -D__DTS__ |
| 232 | |
Sami Tolvanen | 850ded4 | 2021-08-16 11:05:19 -0700 | [diff] [blame] | 233 | ifeq ($(CONFIG_LTO_CLANG),y) |
| 234 | # With CONFIG_LTO_CLANG, .o files in modules might be LLVM bitcode, so we |
| 235 | # need to run LTO to compile them into native code (.lto.o) before further |
| 236 | # processing. |
| 237 | mod-prelink-ext := .lto |
| 238 | endif |
| 239 | |
Masahiro Yamada | c8589d1 | 2014-08-19 16:34:20 +0900 | [diff] [blame] | 240 | # Useful for describing the dependency of composite objects |
| 241 | # Usage: |
| 242 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) |
| 243 | define multi_depend |
| 244 | $(foreach m, $(notdir $1), \ |
| 245 | $(eval $(obj)/$m: \ |
| 246 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) |
| 247 | endef |
| 248 | |
Masahiro Yamada | dee9c0b | 2020-06-26 02:04:33 +0900 | [diff] [blame] | 249 | quiet_cmd_copy = COPY $@ |
| 250 | cmd_copy = cp $< $@ |
| 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | # Shipped files |
| 253 | # =========================================================================== |
Masahiro Yamada | 3787b7d | 2021-04-24 20:55:53 +0900 | [diff] [blame] | 254 | # 'cp' preserves permissions. If you use it to copy a file in read-only srctree, |
| 255 | # the copy would be read-only as well, leading to an error when executing the |
| 256 | # rule next time. Use 'cat' instead in order to generate a writable file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
| 258 | quiet_cmd_shipped = SHIPPED $@ |
| 259 | cmd_shipped = cat $< > $@ |
| 260 | |
Arnaud Lacombe | 991d76c | 2011-06-07 13:09:28 -0400 | [diff] [blame] | 261 | $(obj)/%: $(src)/%_shipped |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | $(call cmd,shipped) |
| 263 | |
| 264 | # Commands useful for building a boot image |
| 265 | # =========================================================================== |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 266 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | # Use as following: |
| 268 | # |
| 269 | # target: source(s) FORCE |
| 270 | # $(if_changed,ld/objcopy/gzip) |
| 271 | # |
Masahiro Yamada | 2047ace | 2021-01-20 15:23:51 +0900 | [diff] [blame] | 272 | # and add target to 'targets' so that we know we have to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | # read in the saved command line |
| 274 | |
| 275 | # Linking |
| 276 | # --------------------------------------------------------------------------- |
| 277 | |
| 278 | quiet_cmd_ld = LD $@ |
Masahiro Yamada | afa974b | 2019-01-17 19:02:43 +0900 | [diff] [blame] | 279 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Masahiro Yamada | 898f5a0 | 2019-02-05 16:33:37 +0900 | [diff] [blame] | 281 | # Archive |
| 282 | # --------------------------------------------------------------------------- |
| 283 | |
| 284 | quiet_cmd_ar = AR $@ |
Masahiro Yamada | 13dc8c0 | 2019-09-21 15:49:54 +0900 | [diff] [blame] | 285 | cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
Masahiro Yamada | 898f5a0 | 2019-02-05 16:33:37 +0900 | [diff] [blame] | 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | # Objcopy |
| 288 | # --------------------------------------------------------------------------- |
| 289 | |
| 290 | quiet_cmd_objcopy = OBJCOPY $@ |
| 291 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ |
| 292 | |
| 293 | # Gzip |
| 294 | # --------------------------------------------------------------------------- |
| 295 | |
| 296 | quiet_cmd_gzip = GZIP $@ |
Denis Efremov | e4a42c8 | 2020-06-08 12:59:44 +0300 | [diff] [blame] | 297 | cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 299 | # DTC |
| 300 | # --------------------------------------------------------------------------- |
Rob Herring | 6b22b3d | 2016-02-11 16:28:13 -0600 | [diff] [blame] | 301 | DTC ?= $(objtree)/scripts/dtc/dtc |
Rob Herring | 3eb619b | 2020-06-29 12:15:13 -0600 | [diff] [blame] | 302 | DTC_FLAGS += -Wno-interrupt_provider |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 303 | |
Rob Herring | bc55398 | 2016-03-24 10:52:42 -0500 | [diff] [blame] | 304 | # Disable noisy checks by default |
Masahiro Yamada | e27128d | 2019-09-01 01:25:55 +0900 | [diff] [blame] | 305 | ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) |
Rob Herring | 8654cb8 | 2017-03-21 09:14:20 -0500 | [diff] [blame] | 306 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
Rob Herring | 4fd98e3 | 2018-02-28 08:09:45 -0600 | [diff] [blame] | 307 | -Wno-avoid_unnecessary_addr_size \ |
| 308 | -Wno-alias_paths \ |
Rob Herring | 74656b6 | 2018-05-07 16:46:47 -0500 | [diff] [blame] | 309 | -Wno-graph_child_address \ |
Rob Herring | 70523a3 | 2018-11-28 19:11:50 -0600 | [diff] [blame] | 310 | -Wno-simple_bus_reg \ |
Rob Herring | 1ee7943 | 2021-08-20 11:24:20 -0500 | [diff] [blame] | 311 | -Wno-unique_unit_address |
Rob Herring | bc55398 | 2016-03-24 10:52:42 -0500 | [diff] [blame] | 312 | endif |
| 313 | |
Masahiro Yamada | e27128d | 2019-09-01 01:25:55 +0900 | [diff] [blame] | 314 | ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) |
Rob Herring | 8654cb8 | 2017-03-21 09:14:20 -0500 | [diff] [blame] | 315 | DTC_FLAGS += -Wnode_name_chars_strict \ |
Rob Herring | 3eb619b | 2020-06-29 12:15:13 -0600 | [diff] [blame] | 316 | -Wproperty_name_chars_strict \ |
| 317 | -Winterrupt_provider |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 318 | endif |
| 319 | |
Frank Rowand | 331f741 | 2017-04-25 17:09:53 -0700 | [diff] [blame] | 320 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
| 321 | |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 322 | # Set -@ if the target is a base DTB that overlay is applied onto |
| 323 | DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) |
| 324 | |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 325 | # Generate an assembly file to wrap the output of the device tree compiler |
| 326 | quiet_cmd_dt_S_dtb= DTB $@ |
| 327 | cmd_dt_S_dtb= \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 328 | { \ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 329 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
| 330 | echo '.section .dtb.init.rodata,"a"'; \ |
| 331 | echo '.balign STRUCT_ALIGNMENT'; \ |
James Hogan | 55fe6da | 2018-03-08 11:02:46 +0000 | [diff] [blame] | 332 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
| 333 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 334 | echo '.incbin "$<" '; \ |
James Hogan | 55fe6da | 2018-03-08 11:02:46 +0000 | [diff] [blame] | 335 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
| 336 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 337 | echo '.balign STRUCT_ALIGNMENT'; \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 338 | } > $@ |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 339 | |
Masahiro Yamada | a7f9241 | 2018-03-23 22:04:34 +0900 | [diff] [blame] | 340 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
| 341 | $(call if_changed,dt_S_dtb) |
Dirk Brandewie | aab9433 | 2010-12-22 11:57:26 -0800 | [diff] [blame] | 342 | |
| 343 | quiet_cmd_dtc = DTC $@ |
Masahiro Yamada | dd7699e | 2020-06-23 17:05:49 +0900 | [diff] [blame] | 344 | cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
Masahiro Yamada | 64bfc99 | 2021-03-10 20:08:24 +0900 | [diff] [blame] | 345 | $(DTC) -o $@ -b 0 \ |
Masahiro Yamada | 50f9dda | 2017-07-25 11:23:36 +0900 | [diff] [blame] | 346 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
Ian Campbell | b0a4d8b | 2013-05-31 11:14:20 +0100 | [diff] [blame] | 347 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
| 348 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
Rob Herring | b8fc5b2 | 2018-02-27 17:49:57 -0600 | [diff] [blame] | 350 | $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE |
Masahiro Yamada | 78046fa | 2020-04-27 22:49:30 +0900 | [diff] [blame] | 351 | $(call if_changed_dep,dtc) |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 352 | |
Viresh Kumar | ce88c9c | 2021-01-29 12:54:08 +0530 | [diff] [blame] | 353 | $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE |
| 354 | $(call if_changed_dep,dtc) |
| 355 | |
Rob Herring | 15d16d6 | 2021-03-10 11:05:30 +0530 | [diff] [blame] | 356 | quiet_cmd_fdtoverlay = DTOVL $@ |
| 357 | cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) |
| 358 | |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 359 | $(multi-dtb-y): FORCE |
Rob Herring | 15d16d6 | 2021-03-10 11:05:30 +0530 | [diff] [blame] | 360 | $(call if_changed,fdtoverlay) |
Masahiro Yamada | bcf0c66 | 2021-05-03 03:09:56 +0900 | [diff] [blame] | 361 | $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) |
Rob Herring | 15d16d6 | 2021-03-10 11:05:30 +0530 | [diff] [blame] | 362 | |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 363 | DT_CHECKER ?= dt-validate |
Rob Herring | c59773d | 2021-03-11 16:36:40 -0700 | [diff] [blame] | 364 | DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),,-m) |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 365 | DT_BINDING_DIR := Documentation/devicetree/bindings |
Rob Herring | 2ba06cd | 2020-02-28 18:37:30 -0600 | [diff] [blame] | 366 | # DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile |
Andrei Ziureaev | b8a4939 | 2020-08-13 14:26:11 +0100 | [diff] [blame] | 367 | DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.json |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 368 | |
| 369 | quiet_cmd_dtb_check = CHECK $@ |
Rob Herring | c59773d | 2021-03-11 16:36:40 -0700 | [diff] [blame] | 370 | cmd_dtb_check = $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 371 | |
Masahiro Yamada | 7a04960 | 2020-02-23 04:04:31 +0900 | [diff] [blame] | 372 | define rule_dtc |
Masahiro Yamada | 78046fa | 2020-04-27 22:49:30 +0900 | [diff] [blame] | 373 | $(call cmd_and_fixdep,dtc) |
Masahiro Yamada | f568866 | 2018-12-31 13:09:00 +0900 | [diff] [blame] | 374 | $(call cmd,dtb_check) |
Rob Herring | 4f0e3a5 | 2018-09-06 13:26:07 -0500 | [diff] [blame] | 375 | endef |
| 376 | |
| 377 | $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE |
Masahiro Yamada | 285a65f | 2021-03-11 15:30:54 +0900 | [diff] [blame] | 378 | $(call if_changed_rule,dtc) |
Stephen Warren | 90b335f | 2012-11-27 16:29:10 -0700 | [diff] [blame] | 379 | |
Ian Campbell | b0a4d8b | 2013-05-31 11:14:20 +0100 | [diff] [blame] | 380 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
Stephen Warren | 22435f3 | 2013-02-05 12:06:28 -0700 | [diff] [blame] | 381 | |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 382 | # Bzip2 |
| 383 | # --------------------------------------------------------------------------- |
| 384 | |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 385 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
| 386 | # append the size as a 32-bit littleendian number as gzip does. |
Michael Tokarev | 4a2ff67 | 2009-10-13 22:22:46 +0200 | [diff] [blame] | 387 | size_append = printf $(shell \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 388 | dec_size=0; \ |
Masahiro Yamada | afa974b | 2019-01-17 19:02:43 +0900 | [diff] [blame] | 389 | for F in $(real-prereqs); do \ |
Michael Forney | a670b0b | 2018-03-18 17:54:02 -0700 | [diff] [blame] | 390 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 391 | dec_size=$$(expr $$dec_size + $$fsize); \ |
| 392 | done; \ |
Jonathan Nieder | 1373411 | 2009-12-28 19:38:27 +0000 | [diff] [blame] | 393 | printf "%08x\n" $$dec_size | \ |
| 394 | sed 's/\(..\)/\1 /g' | { \ |
| 395 | read ch0 ch1 ch2 ch3; \ |
| 396 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ |
| 397 | printf '%s%03o' '\\' $$((0x$$ch)); \ |
| 398 | done; \ |
| 399 | } \ |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 400 | ) |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 401 | |
Masahiro Yamada | c4d7f40 | 2022-01-10 03:15:29 +0900 | [diff] [blame] | 402 | quiet_cmd_file_size = GEN $@ |
| 403 | cmd_file_size = $(size_append) > $@ |
| 404 | |
H. Peter Anvin | d3dd3b5 | 2009-05-05 21:17:15 -0700 | [diff] [blame] | 405 | quiet_cmd_bzip2 = BZIP2 $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 406 | cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@ |
| 407 | |
| 408 | quiet_cmd_bzip2_with_size = BZIP2 $@ |
| 409 | cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ |
Alain Knaff | bc22c17 | 2009-01-04 22:46:16 +0100 | [diff] [blame] | 410 | |
| 411 | # Lzma |
| 412 | # --------------------------------------------------------------------------- |
| 413 | |
| 414 | quiet_cmd_lzma = LZMA $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 415 | cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@ |
| 416 | |
| 417 | quiet_cmd_lzma_with_size = LZMA $@ |
| 418 | cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ |
Albin Tonnerre | 7dd65fe | 2010-01-08 14:42:42 -0800 | [diff] [blame] | 419 | |
Wu Zhangjin | 2d74b2c | 2010-03-11 17:42:14 +0800 | [diff] [blame] | 420 | quiet_cmd_lzo = LZO $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 421 | cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@ |
| 422 | |
| 423 | quiet_cmd_lzo_with_size = LZO $@ |
| 424 | cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ |
Borislav Petkov | d61931d | 2010-03-05 17:34:46 +0100 | [diff] [blame] | 425 | |
Kyungsik Lee | e76e1fd | 2013-07-08 16:01:46 -0700 | [diff] [blame] | 426 | quiet_cmd_lz4 = LZ4 $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 427 | cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@ |
| 428 | |
| 429 | quiet_cmd_lz4_with_size = LZ4 $@ |
| 430 | cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 431 | $(size_append); } > $@ |
Kyungsik Lee | e76e1fd | 2013-07-08 16:01:46 -0700 | [diff] [blame] | 432 | |
Stephen Warren | e339364 | 2012-03-16 15:03:55 -0600 | [diff] [blame] | 433 | # U-Boot mkimage |
| 434 | # --------------------------------------------------------------------------- |
| 435 | |
| 436 | MKIMAGE := $(srctree)/scripts/mkuboot.sh |
| 437 | |
| 438 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces |
| 439 | # the number of overrides in arch makefiles |
| 440 | UIMAGE_ARCH ?= $(SRCARCH) |
| 441 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) |
| 442 | UIMAGE_OPTS-y ?= |
| 443 | UIMAGE_TYPE ?= kernel |
| 444 | UIMAGE_LOADADDR ?= arch_must_set_this |
| 445 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) |
| 446 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' |
Stephen Warren | e339364 | 2012-03-16 15:03:55 -0600 | [diff] [blame] | 447 | |
Masahiro Yamada | 786ac51 | 2018-12-31 10:05:01 +0900 | [diff] [blame] | 448 | quiet_cmd_uimage = UIMAGE $@ |
Masahiro Yamada | 858805b | 2019-08-25 22:28:37 +0900 | [diff] [blame] | 449 | cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
Stephen Warren | e339364 | 2012-03-16 15:03:55 -0600 | [diff] [blame] | 450 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
| 451 | -T $(UIMAGE_TYPE) \ |
| 452 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ |
Masahiro Yamada | 786ac51 | 2018-12-31 10:05:01 +0900 | [diff] [blame] | 453 | -n $(UIMAGE_NAME) -d $< $@ |
Stephen Warren | e339364 | 2012-03-16 15:03:55 -0600 | [diff] [blame] | 454 | |
Lasse Collin | 24fa040 | 2011-01-12 17:01:22 -0800 | [diff] [blame] | 455 | # XZ |
| 456 | # --------------------------------------------------------------------------- |
| 457 | # Use xzkern to compress the kernel image and xzmisc to compress other things. |
| 458 | # |
| 459 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage |
| 460 | # of the kernel decompressor. A BCJ filter is used if it is available for |
| 461 | # the target architecture. xzkern also appends uncompressed size of the data |
| 462 | # using size_append. The .xz format has the size information available at |
| 463 | # the end of the file too, but it's in more complex format and it's good to |
| 464 | # avoid changing the part of the boot code that reads the uncompressed size. |
| 465 | # Note that the bytes added by size_append will make the xz tool think that |
| 466 | # the file is corrupt. This is expected. |
| 467 | # |
| 468 | # xzmisc doesn't use size_append, so it can be used to create normal .xz |
| 469 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very |
| 470 | # big dictionary would increase the memory usage too much in the multi-call |
| 471 | # decompression mode. A BCJ filter isn't used either. |
| 472 | quiet_cmd_xzkern = XZKERN $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 473 | cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@ |
| 474 | |
| 475 | quiet_cmd_xzkern_with_size = XZKERN $@ |
| 476 | cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ |
Masahiro Yamada | b79c6aa | 2019-01-17 19:02:44 +0900 | [diff] [blame] | 477 | $(size_append); } > $@ |
Lasse Collin | 24fa040 | 2011-01-12 17:01:22 -0800 | [diff] [blame] | 478 | |
| 479 | quiet_cmd_xzmisc = XZMISC $@ |
Denis Efremov | 8dfb61d | 2020-06-05 10:39:55 +0300 | [diff] [blame] | 480 | cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 481 | |
Nick Terrell | 48f7ddf | 2020-07-30 12:08:36 -0700 | [diff] [blame] | 482 | # ZSTD |
| 483 | # --------------------------------------------------------------------------- |
| 484 | # Appends the uncompressed size of the data using size_append. The .zst |
| 485 | # format has the size information available at the beginning of the file too, |
| 486 | # but it's in a more complex format and it's good to avoid changing the part |
| 487 | # of the boot code that reads the uncompressed size. |
| 488 | # |
| 489 | # Note that the bytes added by size_append will make the zstd tool think that |
| 490 | # the file is corrupt. This is expected. |
| 491 | # |
| 492 | # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of |
| 493 | # 128 MB. zstd22 is used for kernel compression because it is decompressed in a |
| 494 | # single pass, so zstd doesn't need to allocate a window buffer. When streaming |
| 495 | # decompression is used, like initramfs decompression, zstd22 should likely not |
| 496 | # be used because it would require zstd to allocate a 128 MB buffer. |
| 497 | |
| 498 | quiet_cmd_zstd = ZSTD $@ |
Masahiro Yamada | 64d8aaa | 2022-01-10 03:15:26 +0900 | [diff] [blame] | 499 | cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ |
Nick Terrell | 48f7ddf | 2020-07-30 12:08:36 -0700 | [diff] [blame] | 500 | |
| 501 | quiet_cmd_zstd22 = ZSTD22 $@ |
Masahiro Yamada | 7ce7e98 | 2022-01-10 03:15:27 +0900 | [diff] [blame] | 502 | cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@ |
| 503 | |
| 504 | quiet_cmd_zstd22_with_size = ZSTD22 $@ |
| 505 | cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ |
Nick Terrell | 48f7ddf | 2020-07-30 12:08:36 -0700 | [diff] [blame] | 506 | |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 507 | # ASM offsets |
| 508 | # --------------------------------------------------------------------------- |
| 509 | |
| 510 | # Default sed regexp - multiline due to syntax constraints |
Jeroen Hofstee | cf0c3e6 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 511 | # |
| 512 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around |
| 513 | # the .ascii directive whereas GCC keeps the <space> as-is. |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 514 | define sed-offsets |
Jeroen Hofstee | cf0c3e6 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 515 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
| 516 | /^->/{s:->#\(.*\):/* \1 */:; \ |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 517 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
Jeroen Hofstee | cf0c3e6 | 2017-04-21 15:21:11 +0900 | [diff] [blame] | 518 | s:->::; p;}' |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 519 | endef |
| 520 | |
| 521 | # Use filechk to avoid rebuilds when a header changes, but the resulting file |
| 522 | # does not |
| 523 | define filechk_offsets |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 524 | echo "#ifndef $2"; \ |
| 525 | echo "#define $2"; \ |
| 526 | echo "/*"; \ |
| 527 | echo " * DO NOT MODIFY."; \ |
| 528 | echo " *"; \ |
| 529 | echo " * This file was generated by Kbuild"; \ |
| 530 | echo " */"; \ |
| 531 | echo ""; \ |
Masahiro Yamada | 43fee2b | 2018-07-25 14:16:11 +0900 | [diff] [blame] | 532 | sed -ne $(sed-offsets) < $<; \ |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 533 | echo ""; \ |
Masahiro Yamada | ad77408 | 2018-12-31 17:24:09 +0900 | [diff] [blame] | 534 | echo "#endif" |
Matthias Kaehlcke | ebf003f | 2017-04-12 12:43:52 -0700 | [diff] [blame] | 535 | endef |