arch/x86/acpigen.c: Add a method to notify all CPU cores
Change-Id: If8b07fdcec51c344a82309d4af3b6127ad758baf
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/29895
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 426a542..290893d 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -369,6 +369,23 @@
acpigen_pop_len();
}
+/* Method to notify all CPU cores */
+void acpigen_write_processor_cnot(const unsigned int number_of_cores)
+{
+ int core_id;
+
+ acpigen_write_method("\\_PR.CNOT", 1);
+ for (core_id = 0; core_id < number_of_cores; core_id++) {
+ char buffer[DEVICE_PATH_MAX];
+ snprintf(buffer, sizeof(buffer), CONFIG_ACPI_CPU_STRING,
+ core_id);
+ acpigen_emit_byte(NOTIFY_OP);
+ acpigen_emit_namestring(buffer);
+ acpigen_emit_byte(ARG0_OP);
+ }
+ acpigen_pop_len();
+}
+
/*
* Generate ACPI AML code for OperationRegion
* Arg0: Pointer to struct opregion opreg = OPREGION(rname, space, offset, len)