Merge branch 'me-disable' into mbp101_medisable_1

1 files changed, 31 insertions, 0 deletions

diff --git a/src/southbridge/intel/common/me.c b/src/southbridge/intel/common/me.c
new file mode 100644
index 0000000000..d49508748a
--- /dev/null
+++ b/src/southbridge/intel/common/me.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#define __SIMPLE_DEVICE__
+
+#include <device/pci_ops.h>
+#include <types.h>
+
+#include "me.h"
+
+#define PCH_LPC_DEV		PCI_DEV(0, 0x1f, 0)
+
+#define ETR3			0xac
+#define  ETR3_CWORWRE		(1 << 18)
+#define  ETR3_CF9GR		(1 << 20)
+#define  ETR3_CF9LOCK		(1 << 31)
+
+void set_global_reset(const bool enable)
+{
+	u32 etr3 = pci_read_config32(PCH_LPC_DEV, ETR3);
+
+	/* Clear CF9 Without Resume Well Reset Enable */
+	etr3 &= ~ETR3_CWORWRE;
+
+	/* CF9GR indicates a Global Reset */
+	if (enable)
+		etr3 |= ETR3_CF9GR;
+	else
+		etr3 &= ~ETR3_CF9GR;
+
+	pci_write_config32(PCH_LPC_DEV, ETR3, etr3);
+}