x86/acpigen: Fix ACPI _ROM method
Fix the following Error:
FAILED [LOW] AMLAsmASL_MSG_SERIALIZED_REQUIRED: Test 1, Assembler remark in line
142
Line | AML source
--------------------------------------------------------------------------------
00139|
00140| Scope (\_SB.PCI0.IGFX)
00141| {
00142| Method (_ROM, 2, NotSerialized) // _ROM: Read-Only Memory
| ^
| Remark 2120: Control Method should be made Serialized (due to creation of named objects within)
00143| {
00144| OperationRegion (ROMS, SystemMemory, 0xCD520000, 0xFE00)
00145| Field (ROMS, AnyAcc, NoLock, Preserve)
================================================================================
ADVICE: (for Remark #2120, ASL_MSG_SERIALIZED_REQUIRED): A named object is
created inside a non-serialized method - this method should be serialized. It is
possible that one thread enters the method and blocks and then a second thread
also executes the method, ending up in two attempts to create the object and
causing a failure.
Use the acpigen_write_method_serialized() to correct the error.
BUG=b:112476331
TEST=Run FWTS.
Change-Id: I145c3c3103efb4a02b4e02dd177f4bf50a2c7b3e
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/28124
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index f73ace2..e10d307 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -1454,7 +1454,7 @@
ASSERT(length)
/* Method (_ROM, 2, NotSerialized) */
- acpigen_write_method("_ROM", 2);
+ acpigen_write_method_serialized("_ROM", 2);
/* OperationRegion("ROMS", SYSTEMMEMORY, current, length) */
struct opregion opreg = OPREGION("ROMS", SYSTEMMEMORY,