Commit c07d8017 authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

arm64/sysreg: Enable automatic generation of system register definitions 



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: default avatarMark Brown <broonie@kernel.org>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220503170233.507788-10-broonie@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 66847e06

arch/arm64/include/asm/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -7,3 +7,4 @@ generic-y += parport.h 
generic-y += user.h



generated-y += cpucaps.h

generated-y += sysreg-defs.h

arch/arm64/include/asm/sysreg.h

+8 −0
Original line number Diff line number Diff line
@@ -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.

arch/arm64/tools/Makefile

+7 −1
Original line number Diff line number Diff line
@@ -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)