[PATCH v2 4/4] arm64/sysreg: Enforce sorting

[James Clark]

Make an unsorted sysreg file a build error so it stays sorted.

Reviewed-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
 arch/arm64/tools/gen-sysreg.awk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/tools/gen-sysreg.awk b/arch/arm64/tools/gen-sysreg.awk
index f2a1732cb1f6..03a4886524dd 100755
--- a/arch/arm64/tools/gen-sysreg.awk
+++ b/arch/arm64/tools/gen-sysreg.awk
@@ -98,6 +98,7 @@ BEGIN {
 
 	__current_block_depth = 0
 	__current_block[__current_block_depth] = "Root"
+	__last_sysreg_sort_val = 0
 }
 
 END {
@@ -158,6 +159,12 @@ $1 == "Sysreg" && block_current() == "Root" {
 	crm = $6
 	op2 = $7
 
+	sort_val = sprintf("%02d", $3) sprintf("%02d", $4) sprintf("%02d", $5) \
+			sprintf("%02d", $6) sprintf("%02d", $7)
+	if (sort_val < __last_sysreg_sort_val)
+		fatal($2 ": Sysregs should be sorted by encoding")
+	__last_sysreg_sort_val = sort_val
+
 	res0 = "UL(0)"
 	res1 = "UL(0)"
 	unkn = "UL(0)"
-- 
2.34.1