mainboard/lenovo/t410: Add new port

The port is based on the x201 / t410s.
2537-vg5 / i5, no discrete gpu

Tested and working:
* Native raminit
* Native gfxinit
* Booting Seabios 1.12.1
* Booting from EHCI
* Running GNU/Linux 5.0.0
* No errors in dmesg
* EHCI debug on the devices left side, bottom-right
* Keyboard
* Fn keys (Mute, Volume, Mic)
* Touchpad
* TPM
* Wifi
* Sound
* USB
* Ethernet
* S3 resume
* VBOOT

Testing in progress.

Untested:
* VGA
* Displayport
* Docking station

Bugs:
* AC adapter can't be read from ACPI
* TPM not working with VBOOT and C_ENV BB

Details for flashing externally:
1. Disconnect all power
2. Connect the external flasher
3. Connect the power cord (This fixes internal power control)
4. Remove the power cord

Change-Id: Id9d872e643dd242e925bfb46d18076e6ad100995
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/11791
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

1 files changed, 110 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/t410/smihandler.c b/src/mainboard/lenovo/t410/smihandler.c
new file mode 100644
index 0000000000..91cb0ce2d6
--- /dev/null
+++ b/src/mainboard/lenovo/t410/smihandler.c
@@ -0,0 +1,110 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <southbridge/intel/ibexpeak/nvs.h>
+#include <southbridge/intel/common/pmutil.h>
+#include <northbridge/intel/nehalem/nehalem.h>
+#include <ec/acpi/ec.h>
+#include <ec/lenovo/h8/h8.h>
+#include <delay.h>
+#include "dock.h"
+
+#define GPE_EC_SCI	1
+#define GPE_EC_WAKE	13
+
+static void mainboard_smi_handle_ec_sci(void)
+{
+	u8 status = inb(EC_SC);
+	u8 event;
+
+	if (!(status & EC_SCI_EVT))
+		return;
+
+	event = ec_query();
+	printk(BIOS_DEBUG, "EC event %02x\n", event);
+
+	switch (event) {
+	case 0x18:
+		/* Fn-F9 key */
+	case 0x27:
+		/* Power loss */
+	case 0x50:
+		/* Undock Key */
+		ec_clr_bit(0x03, 2);
+		dock_disconnect();
+		break;
+	case 0x37:
+	case 0x58:
+		/* Dock Event */
+		ec_clr_bit(0x03, 2);
+		mdelay(250);
+		dock_connect();
+		ec_set_bit(0x03, 2);
+		/* set dock LED to indicate status */
+		ec_write(0x0c, 0x09);
+		ec_write(0x0c, 0x88);
+		break;
+	default:
+		break;
+	}
+}
+
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+	if (gpi_sts & (1 << GPE_EC_SCI))
+		mainboard_smi_handle_ec_sci();
+}
+
+int mainboard_smi_apmc(u8 data)
+{
+	switch (data) {
+	case APM_CNT_ACPI_ENABLE:
+		/* use 0x1600/0x1604 to prevent races with userspace */
+		ec_set_ports(0x1604, 0x1600);
+		/* route H8SCI to SCI */
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	case APM_CNT_ACPI_DISABLE:
+		/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
+		   provide a EC query function */
+		ec_set_ports(0x66, 0x62);
+		/* route H8SCI# to SMI */
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+	if (slp_typ == 3) {
+		u8 ec_wake = ec_read(0x32);
+		/* If EC wake events are enabled, enable wake on EC WAKE GPE. */
+		if (ec_wake & 0x14) {
+			/* Redirect EC WAKE GPE to SCI. */
+			gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI);
+		}
+	}
+}