4fb307f1e4
Almost all thunks are already ARMv5 safe, so we can just require this architecture on the gas command line, to enforce compatibility with the F1Cx00 series. This prevents accidental changes in the future. The RMR thunk uses the ARMv7 only DSB/ISB instructions, but this runs on ARMv8 cores only anyway, so we just force ARMv7 for this file, and avoid code changes. Signed-off-by: Andre Przywara <osp@andrep.de>
36 lines
1.0 KiB
Makefile
36 lines
1.0 KiB
Makefile
#
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# build "preprocessed" .h files for inclusion of ARM scratch code
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#
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SPL_THUNK := fel-to-spl-thunk.h
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THUNKS := clrsetbits.h
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THUNKS += memcpy.h
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THUNKS += readl_writel.h
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THUNKS += rmr-thunk.h
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THUNKS += sid_read_root.h
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all: $(SPL_THUNK) $(THUNKS)
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# clean up object files afterwards
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rm -f *.o
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# This empty prerequisite enforces a rebuild of all the headers on every run
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FORCE:
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# If not specified explicitly: try to guess a suitable ARM toolchain prefix
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CROSS_COMPILE ?= $(shell ../find-arm-gcc.sh)
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AS := $(CROSS_COMPILE)as
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OBJDUMP := $(CROSS_COMPILE)objdump
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AWK_O_TO_H := LC_ALL=C awk -f objdump_to_h.awk
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# The SPL thunk requires a different output format. The "style" variable for
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# awk controls this, and causes the htole32() conversion to be omitted.
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fel-to-spl-thunk.h: fel-to-spl-thunk.S FORCE
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$(AS) -o $(subst .S,.o,$<) -march=armv5te $<
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$(OBJDUMP) -d $(subst .S,.o,$<) | $(AWK_O_TO_H) -v style=old > $@
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$(THUNKS): %.h: %.S FORCE
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$(AS) -o $(subst .S,.o,$<) -march=armv5te $<
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$(OBJDUMP) -d $(subst .S,.o,$<) | $(AWK_O_TO_H) > $@
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