1 files changed, 41 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/x60/cstates.c b/src/mainboard/lenovo/x60/cstates.c
new file mode 100644
index 0000000000..c6237bc592
--- /dev/null
+++ b/src/mainboard/lenovo/x60/cstates.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpigen.h>
+#include <southbridge/intel/i82801gx/i82801gx.h>
+
+#define MWAIT_RES(state, sub_state)				\
+	{							\
+		.space_id = ACPI_ADDRESS_SPACE_FIXED,		\
+		.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,	\
+		.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,	\
+		.access_size = ACPI_ACCESS_SIZE_UNDEFINED,	\
+		.addrl = (((state) << 4) | (sub_state)),	\
+		.addrh = 0,					\
+	}
+
+static acpi_cstate_t cst_entries[] = {
+	{
+		.ctype = 1,
+		.latency = 1,
+		.power = 1000,
+		.resource = MWAIT_RES(0, 0),
+	},
+	{
+		.ctype = 2,
+		.latency = 1,
+		.power = 500,
+		.resource = MWAIT_RES(1, 0),
+	},
+	{
+		.ctype = 3,
+		.latency = 17,
+		.power = 250,
+		.resource = MWAIT_RES(2, 0),
+	},
+};
+
+int get_cst_entries(acpi_cstate_t **entries)
+{
+	*entries = cst_entries;
+	return ARRAY_SIZE(cst_entries);
+}