1 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c
index 3439836f24..26ab2712a9 100644
--- a/src/soc/intel/skylake/cpu.c
+++ b/src/soc/intel/skylake/cpu.c
@@ -27,6 +27,10 @@
 
 bool cpu_soc_is_in_untrusted_mode(void)
 {
+	/*
+	 * TODO: Add dynamic detection to identify if skylake SoC
+	 * is in coffeelake board.
+	 */
 	if (!CONFIG(MAINBOARD_SUPPORTS_COFFEELAKE_CPU))
 		return false;
 
@@ -35,6 +39,18 @@ bool cpu_soc_is_in_untrusted_mode(void)
 	return !!(msr.lo & ENABLE_IA_UNTRUSTED);
 }
 
+void cpu_soc_bios_done(void)
+{
+	if (!CONFIG(MAINBOARD_SUPPORTS_COFFEELAKE_CPU))
+		return;
+
+	msr_t msr;
+
+	msr = rdmsr(MSR_BIOS_DONE);
+	msr.lo |= ENABLE_IA_UNTRUSTED;
+	wrmsr(MSR_BIOS_DONE, msr);
+}
+
 static void configure_misc(void)
 {
 	config_t *conf = config_of_soc();