diff mbox series

[3/3] firmware: rewrite Makefile

Message ID 1545361961-31990-3-git-send-email-yamada.masahiro@socionext.com
State New
Headers show
Series [1/3] scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore | expand

Commit Message

Masahiro Yamada Dec. 21, 2018, 3:12 a.m. UTC
Clean up the Makefile. Equivalent *.gen.S files are produced.

 - Use filechk to remove ugly wordsize_deps

 - Get FWNAME, FWSTR, ASM_WORD, ASM_ALIGN, and PROGBITS out of the
   recipe for readability

 - Move mkdir into the recipe

 - Clean up generated directories by 'make clean'

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

For this patch to work correctly,
the following prerequisite is necessary:

https://patchwork.kernel.org/patch/10707461/

So, I will queue this series to kbuild tree.

BTW, my next plan is to move firmware/ to
more relevant place, for example,
drivers/base/firmware_loader/builtin.


 firmware/Makefile | 89 ++++++++++++++++++++++---------------------------------
 1 file changed, 35 insertions(+), 54 deletions(-)

-- 
2.7.4

Comments

Masahiro Yamada Dec. 22, 2018, 9:09 a.m. UTC | #1
On Fri, Dec 21, 2018 at 5:43 PM Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
>

> Clean up the Makefile. Equivalent *.gen.S files are produced.

>

>  - Use filechk to remove ugly wordsize_deps

>

>  - Get FWNAME, FWSTR, ASM_WORD, ASM_ALIGN, and PROGBITS out of the

>    recipe for readability

>

>  - Move mkdir into the recipe

>

>  - Clean up generated directories by 'make clean'

>

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

> ---

>


> -targets := $(patsubst $(obj)/%,%, \

> -                                $(shell find $(obj) -name \*.gen.S 2>/dev/null))

> +targets := $(shell cd $(obj) && find * -name '*.gen.S')

> +clean-dirs := $(shell cd $(obj) && find * -maxdepth 0 -type d)


This 'find' emits a warning for out-of-tree build.
So, I will get it back to the original code.


-- 
Best Regards
Masahiro Yamada
Masahiro Yamada Dec. 24, 2018, 3:21 p.m. UTC | #2
On Fri, Dec 21, 2018 at 5:43 PM Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
>

> Clean up the Makefile. Equivalent *.gen.S files are produced.

>

>  - Use filechk to remove ugly wordsize_deps

>

>  - Get FWNAME, FWSTR, ASM_WORD, ASM_ALIGN, and PROGBITS out of the

>    recipe for readability

>

>  - Move mkdir into the recipe

>

>  - Clean up generated directories by 'make clean'

>

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

> ---

>

> For this patch to work correctly,

> the following prerequisite is necessary:

>

> https://patchwork.kernel.org/patch/10707461/

>

> So, I will queue this series to kbuild tree.

>

> BTW, my next plan is to move firmware/ to

> more relevant place, for example,

> drivers/base/firmware_loader/builtin.

>

>

>  firmware/Makefile | 89 ++++++++++++++++++++++---------------------------------

>  1 file changed, 35 insertions(+), 54 deletions(-)

>

> diff --git a/firmware/Makefile b/firmware/Makefile

> index 2964138..18d1c84 100644

> --- a/firmware/Makefile

> +++ b/firmware/Makefile

> @@ -1,61 +1,42 @@

>  # SPDX-License-Identifier: GPL-2.0

> -#

> -# kbuild file for firmware/

> -#

>

> -# Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a

> +# Create $(fwdir) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a

>  # leading /, it's relative to $(srctree).

>  fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR))

> -fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))

> -

> -fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))

> -

> -quiet_cmd_fwbin = MK_FW   $@

> -      cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)";               \

> -                 FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst      \

> -                               firmware/%.gen.S,%,$@))))";                  \

> -                 ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long);                \

> -                 ASM_ALIGN=$(if $(CONFIG_64BIT),3,2);                       \

> -                 PROGBITS=$(if $(CONFIG_ARM),%,@)progbits;                  \

> -                 echo "/* Generated by firmware/Makefile */"           > $@;\

> -                 echo "    .section .rodata"                           >>$@;\

> -                 echo "    .p2align $${ASM_ALIGN}"                     >>$@;\

> -                 echo "_fw_$${FWSTR}_bin:"                             >>$@;\

> -                 echo "    .incbin \"$(2)\""                           >>$@;\

> -                 echo "_fw_end:"                                       >>$@;\

> -                 echo "   .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\

> -                 echo "    .p2align $${ASM_ALIGN}"                     >>$@;\

> -                 echo "_fw_$${FWSTR}_name:"                            >>$@;\

> -                 echo "    .string \"$$FWNAME\""                       >>$@;\

> -                 echo "    .section .builtin_fw,\"a\",$${PROGBITS}"    >>$@;\

> -                 echo "    .p2align $${ASM_ALIGN}"                     >>$@;\

> -                 echo "    $${ASM_WORD} _fw_$${FWSTR}_name"            >>$@;\

> -                 echo "    $${ASM_WORD} _fw_$${FWSTR}_bin"             >>$@;\

> -                 echo "    $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin"   >>$@;

> -

> -# One of these files will change, or come into existence, whenever

> -# the configuration changes between 32-bit and 64-bit. The .S files

> -# need to change when that happens.

> -wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \

> -               include/config/ppc32.h include/config/ppc64.h \

> -               include/config/superh32.h include/config/superh64.h \

> -               include/config/x86_32.h include/config/x86_64.h \

> -               firmware/Makefile)

> -

> -$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \

> -               include/config/extra/firmware/dir.h

> -       $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))

> +fwdir := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))

> +

> +obj-y  := $(addsuffix .gen.o, $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE)))

> +

> +FWNAME    = $(patsubst $(obj)/%.gen.S,%,$@)

> +FWSTR     = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME))))

> +ASM_WORD  = $(if $(CONFIG_64BIT),.quad,.long)

> +ASM_ALIGN = $(if $(CONFIG_64BIT),3,2)

> +PROGBITS  = $(if $(CONFIG_ARM),%,@)progbits

> +

> +filechk_fwbin = { \

> +       echo "/* Generated by $(src)/Makefile */"               ;\

> +       echo "    .section .rodata"                             ;\

> +       echo "    .p2align $(ASM_ALIGN)"                        ;\

> +       echo "_fw_$(FWSTR)_bin:"                                ;\

> +       echo "    .incbin \"$(fwdir)/$(FWNAME)\""               ;\

> +       echo "_fw_end:"                                         ;\

> +       echo "    .section .rodata.str,\"aMS\",$(PROGBITS),1"   ;\

> +       echo "    .p2align $(ASM_ALIGN)"                        ;\

> +       echo "_fw_$(FWSTR)_name:"                               ;\

> +       echo "    .string \"$(FWNAME)\""                        ;\

> +       echo "    .section .builtin_fw,\"a\",$(PROGBITS)"       ;\

> +       echo "    .p2align $(ASM_ALIGN)"                        ;\

> +       echo "    $(ASM_WORD) _fw_$(FWSTR)_name"                ;\

> +       echo "    $(ASM_WORD) _fw_$(FWSTR)_bin"                 ;\

> +       echo "    $(ASM_WORD) _fw_end - _fw_$(FWSTR)_bin"       ;\

> +}

> +

> +$(obj)/%.gen.S: FORCE

> +       @mkdir -p $(dir $@)



Removed this line because filechk creates the directory automatically.

Then, applied to linux-kbuild.


> +       $(call filechk,fwbin)

>

>  # The .o files depend on the binaries directly; the .S files don't.

> -$(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/%

> -

> -obj-y                           += $(patsubst %,%.gen.o, $(fw-external-y))

> -

> -ifeq ($(KBUILD_SRC),)

> -# Makefile.build only creates subdirectories for O= builds, but external

> -# firmware might live outside the kernel source tree

> -_dummy := $(foreach d,$(addprefix $(obj)/,$(dir $(fw-external-y))), $(shell [ -d $(d) ] || mkdir -p $(d)))

> -endif

> +$(addprefix $(obj)/, $(obj-y)): $(obj)/%.gen.o: $(fwdir)/%

>

> -targets := $(patsubst $(obj)/%,%, \

> -                                $(shell find $(obj) -name \*.gen.S 2>/dev/null))

> +targets := $(shell cd $(obj) && find * -name '*.gen.S')

> +clean-dirs := $(shell cd $(obj) && find * -maxdepth 0 -type d)

> --

> 2.7.4

>



-- 
Best Regards
Masahiro Yamada
diff mbox series

Patch

diff --git a/firmware/Makefile b/firmware/Makefile
index 2964138..18d1c84 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -1,61 +1,42 @@ 
 # SPDX-License-Identifier: GPL-2.0
-#
-# kbuild file for firmware/
-#
 
-# Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a
+# Create $(fwdir) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a
 # leading /, it's relative to $(srctree).
 fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR))
-fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
-
-fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))
-
-quiet_cmd_fwbin = MK_FW   $@
-      cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)";		     \
-		  FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst	     \
-				firmware/%.gen.S,%,$@))))";		     \
-		  ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long);		     \
-		  ASM_ALIGN=$(if $(CONFIG_64BIT),3,2);			     \
-		  PROGBITS=$(if $(CONFIG_ARM),%,@)progbits;		     \
-		  echo "/* Generated by firmware/Makefile */"		> $@;\
-		  echo "    .section .rodata"				>>$@;\
-		  echo "    .p2align $${ASM_ALIGN}"			>>$@;\
-		  echo "_fw_$${FWSTR}_bin:"				>>$@;\
-		  echo "    .incbin \"$(2)\""				>>$@;\
-		  echo "_fw_end:"					>>$@;\
-		  echo "   .section .rodata.str,\"aMS\",$${PROGBITS},1"	>>$@;\
-		  echo "    .p2align $${ASM_ALIGN}"			>>$@;\
-		  echo "_fw_$${FWSTR}_name:"				>>$@;\
-		  echo "    .string \"$$FWNAME\""			>>$@;\
-		  echo "    .section .builtin_fw,\"a\",$${PROGBITS}"	>>$@;\
-		  echo "    .p2align $${ASM_ALIGN}"			>>$@;\
-		  echo "    $${ASM_WORD} _fw_$${FWSTR}_name"		>>$@;\
-		  echo "    $${ASM_WORD} _fw_$${FWSTR}_bin"		>>$@;\
-		  echo "    $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin"	>>$@;
-
-# One of these files will change, or come into existence, whenever
-# the configuration changes between 32-bit and 64-bit. The .S files
-# need to change when that happens.
-wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \
-		include/config/ppc32.h include/config/ppc64.h \
-		include/config/superh32.h include/config/superh64.h \
-		include/config/x86_32.h include/config/x86_64.h \
-		firmware/Makefile)
-
-$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \
-		include/config/extra/firmware/dir.h
-	$(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))
+fwdir := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
+
+obj-y  := $(addsuffix .gen.o, $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE)))
+
+FWNAME    = $(patsubst $(obj)/%.gen.S,%,$@)
+FWSTR     = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME))))
+ASM_WORD  = $(if $(CONFIG_64BIT),.quad,.long)
+ASM_ALIGN = $(if $(CONFIG_64BIT),3,2)
+PROGBITS  = $(if $(CONFIG_ARM),%,@)progbits
+
+filechk_fwbin = { \
+	echo "/* Generated by $(src)/Makefile */"		;\
+	echo "    .section .rodata"				;\
+	echo "    .p2align $(ASM_ALIGN)"			;\
+	echo "_fw_$(FWSTR)_bin:"				;\
+	echo "    .incbin \"$(fwdir)/$(FWNAME)\""		;\
+	echo "_fw_end:"						;\
+	echo "    .section .rodata.str,\"aMS\",$(PROGBITS),1"	;\
+	echo "    .p2align $(ASM_ALIGN)"			;\
+	echo "_fw_$(FWSTR)_name:"				;\
+	echo "    .string \"$(FWNAME)\""			;\
+	echo "    .section .builtin_fw,\"a\",$(PROGBITS)"	;\
+	echo "    .p2align $(ASM_ALIGN)"			;\
+	echo "    $(ASM_WORD) _fw_$(FWSTR)_name"		;\
+	echo "    $(ASM_WORD) _fw_$(FWSTR)_bin"			;\
+	echo "    $(ASM_WORD) _fw_end - _fw_$(FWSTR)_bin"	;\
+}
+
+$(obj)/%.gen.S: FORCE
+	@mkdir -p $(dir $@)
+	$(call filechk,fwbin)
 
 # The .o files depend on the binaries directly; the .S files don't.
-$(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/%
-
-obj-y				 += $(patsubst %,%.gen.o, $(fw-external-y))
-
-ifeq ($(KBUILD_SRC),)
-# Makefile.build only creates subdirectories for O= builds, but external
-# firmware might live outside the kernel source tree
-_dummy := $(foreach d,$(addprefix $(obj)/,$(dir $(fw-external-y))), $(shell [ -d $(d) ] || mkdir -p $(d)))
-endif
+$(addprefix $(obj)/, $(obj-y)): $(obj)/%.gen.o: $(fwdir)/%
 
-targets := $(patsubst $(obj)/%,%, \
-                                $(shell find $(obj) -name \*.gen.S 2>/dev/null))
+targets := $(shell cd $(obj) && find * -name '*.gen.S')
+clean-dirs := $(shell cd $(obj) && find * -maxdepth 0 -type d)