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make: Use shell script to generate .dtb.S files 

Using shell in make to generate an assembly file is not very
readable and extendable. Add an external shell script instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-07-31 13:40:33 +02:00
parent 0a1167029d
commit 7b0d00c465
2 changed files with 17 additions and 15 deletions
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18
scripts/Makefile.lib
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@ -210,21 +210,9 @@ cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
# Generate an assembly file to wrap the output of the device tree compiler
quiet_cmd_dt_S_dtb = DTB $@
cmd_dt_S_dtb= \
( \
echo '\#include <asm-generic/barebox.lds.h>'; \
echo '.section .dtb.rodata.$(subst -,_,$(*F)),"a"'; \
echo '.balign STRUCT_ALIGNMENT'; \
echo '.global __dtb_$(subst -,_,$(*F))_start'; \
echo '__dtb_$(subst -,_,$(*F))_start:'; \
echo '.incbin "$<" '; \
echo '__dtb_$(subst -,_,$(*F))_end:'; \
echo '.global __dtb_$(subst -,_,$(*F))_end'; \
echo '.balign STRUCT_ALIGNMENT'; \
) > $@
$(obj)/%.dtb.S: $(obj)/%.dtb
$(call cmd,dt_S_dtb)
cmd_dt_S_dtb = $(srctree)/scripts/gen-dtb-s $(subst -,_,$(*F)) $< > $@
$(obj)/%.dtb.S: $(obj)/%.dtb $(srctree)/scripts/gen-dtb-s FORCE
$(call if_changed,dt_S_dtb)
quiet_cmd_dtc = DTC $@
cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \

14
scripts/gen-dtb-s Executable file
View File

@ -0,0 +1,14 @@
#!/bin/bash
name=$1
dtb=$2
echo "#include <asm-generic/barebox.lds.h>"
echo ".section .dtb.rodata.${name},\"a\""
echo ".balign STRUCT_ALIGNMENT"
echo ".global __dtb_${name}_start"
echo "__dtb_${name}_start:"
echo ".incbin \"$dtb\""
echo "__dtb_${name}_end:"
echo ".global __dtb_${name}_end"
echo ".balign STRUCT_ALIGNMENT"