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arm64/sysreg: Enable automatic generation of system register definitions

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Now that we have a script for generating system registers hook it up to the
build system similarly to cpucaps. Since we don't currently have any actual
register information in the input file this should produce no change in the
built kernel. For ease of review the register information will be converted
in separate patches.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220503170233.507788-10-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2022-05-03 18:02:30 +01:00 committed by Catalin Marinas
parent 66847e0618
commit c07d8017bc
3 changed files with 16 additions and 1 deletions
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1
arch/arm64/include/asm/Kbuild
View File

@ -7,3 +7,4 @@ generic-y += parport.h
generic-y += user.h
generated-y += cpucaps.h
generated-y += sysreg-defs.h

8
arch/arm64/include/asm/sysreg.h
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@ -114,6 +114,14 @@
#define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2)
#define SYS_DC_CISW sys_insn(1, 0, 7, 14, 2)
/*
* Automatically generated definitions for system registers, the
* manual encodings below are in the process of being converted to
* come from here. The header relies on the definition of sys_reg()
* earlier in this file.
*/
#include "asm/sysreg-defs.h"
/*
* System registers, organised loosely by encoding but grouped together
* where the architected name contains an index. e.g. ID_MMFR<n>_EL1.

8
arch/arm64/tools/Makefile
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@ -3,7 +3,7 @@
gen := arch/$(ARCH)/include/generated
kapi := $(gen)/asm
kapi-hdrs-y := $(kapi)/cpucaps.h
kapi-hdrs-y := $(kapi)/cpucaps.h $(kapi)/sysreg-defs.h
targets += $(addprefix ../../../, $(kapi-hdrs-y))
@ -14,5 +14,11 @@ kapi: $(kapi-hdrs-y)
quiet_cmd_gen_cpucaps = GEN $@
cmd_gen_cpucaps = mkdir -p $(dir $@); $(AWK) -f $(real-prereqs) > $@
quiet_cmd_gen_sysreg = GEN $@
cmd_gen_sysreg = mkdir -p $(dir $@); $(AWK) -f $(real-prereqs) > $@
$(kapi)/cpucaps.h: $(src)/gen-cpucaps.awk $(src)/cpucaps FORCE
$(call if_changed,gen_cpucaps)
$(kapi)/sysreg-defs.h: $(src)/gen-sysreg.awk $(src)/sysreg FORCE
$(call if_changed,gen_sysreg)