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: 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>

diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
index 345fe98..5c8ee5a 100644 (file)
--- a/arch/arm64/include/asm/Kbuild
+++ b/arch/arm64/include/asm/Kbuild
@@ -7,3 +7,4 @@ generic-y += parport.h
 generic-y += user.h
 
 generated-y += cpucaps.h
+generated-y += sysreg-defs.h

diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index ae440b1..db07a01 100644 (file)
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -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.

diff --git a/arch/arm64/tools/Makefile b/arch/arm64/tools/Makefile
index cf13071..07a93ab 100644 (file)
--- a/arch/arm64/tools/Makefile
+++ b/arch/arm64/tools/Makefile
@@ -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)