mb/siemens/chili: Add new mainboard

The Chili base board is a ruggedized laptop with additional industrial
interfaces. So far, only booting and basic interfaces (USB, UART,
Video) are working with the original model, the "base" variant.
No further development is planned for this variant, as our primary
target was another one that will be added in a follow-up.

Change-Id: I1d3508b615ec877edc8db756e9ad38132b37219c
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Signed-off-by: Felix Singer <felix.singer@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39976
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/src/mainboard/siemens/chili/ec.c b/src/mainboard/siemens/chili/ec.c
new file mode 100644
index 0000000000..bc0eb7d9ff
--- /dev/null
+++ b/src/mainboard/siemens/chili/ec.c
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <ec/acpi/ec.h>
+#include <timer.h>
+
+#include "ec.h"
+
+#define EC_STATUS			0x50
+#define   EC_RUNNING			(1 << 1)
+#define EC_DEVICE_CONTROL_1		0x80
+#define   EC_DEVICE_CONTROL_1_PROGAS_ON	(1 << 0)
+#define   EC_DEVICE_CONTROL_1_BOOMER_ON	(1 << 1)
+#define   EC_DEVICE_CONTROL_1_BT_RF_ON	(1 << 2)
+#define   EC_DEVICE_CONTROL_1_TP_ON	(1 << 3)
+#define   EC_DEVICE_CONTROL_1_LAN2_RST	(1 << 6)
+#define EC_DEVICE_CONTROL_2		0x81
+#define   EC_DEVICE_CONTROL_2_LAN_1_ON	(1 << 0)
+#define   EC_DEVICE_CONTROL_2_LAN_2_ON	(1 << 1)
+#define   EC_DEVICE_CONTROL_2_WLAN_ON	(1 << 2)
+#define   EC_DEVICE_CONTROL_2_USB_ON	(1 << 3)
+#define   EC_DEVICE_CONTROL_2_IDE1_ON	(1 << 4)
+#define   EC_DEVICE_CONTROL_2_IDE2_ON	(1 << 5)
+#define   EC_DEVICE_CONTROL_2_COM1_ON	(1 << 6)
+#define   EC_DEVICE_CONTROL_2_MPI_ON	(1 << 7)
+
+#define RUNNING_TIMEOUT_MS		3333
+
+static bool ec_running(void)
+{
+	struct stopwatch sw;
+	uint8_t ec_status;
+
+	stopwatch_init_msecs_expire(&sw, RUNNING_TIMEOUT_MS);
+	do
+		ec_status = ec_read(EC_STATUS);
+	while (!(ec_status & EC_RUNNING) && !stopwatch_expired(&sw));
+
+	if (!(ec_status & EC_RUNNING))
+		printk(BIOS_WARNING, "EC not ready after %dms\n", RUNNING_TIMEOUT_MS);
+
+	return !!(ec_status & EC_RUNNING);
+}
+
+void ec_enable_devices(bool enable_usb)
+{
+	uint8_t control_1, control_2;
+
+	if (!ec_running())
+		return;
+
+	control_1 = ec_read(EC_DEVICE_CONTROL_1);
+	control_2 = ec_read(EC_DEVICE_CONTROL_2);
+
+	printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1);
+	printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2);
+
+	control_1 &= ~(EC_DEVICE_CONTROL_1_BT_RF_ON);
+	control_1 |= EC_DEVICE_CONTROL_1_BOOMER_ON;
+
+	control_2 &= ~(EC_DEVICE_CONTROL_2_WLAN_ON | EC_DEVICE_CONTROL_2_USB_ON);
+	control_2 |= EC_DEVICE_CONTROL_2_MPI_ON;
+	if (enable_usb)
+		control_2 |= EC_DEVICE_CONTROL_2_USB_ON;
+
+	ec_write(EC_DEVICE_CONTROL_1, control_1);
+	ec_write(EC_DEVICE_CONTROL_2, control_2);
+
+	printk(BIOS_INFO, "EC current  EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1));
+	printk(BIOS_INFO, "EC current  EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2));
+}
+
+void mainboard_smi_sleep(const uint8_t slp_typ)
+{
+	uint8_t control_1, control_2;
+
+	if (slp_typ != ACPI_S5)
+		return;
+
+	if (!ec_running())
+		return;
+
+	control_1 = ec_read(EC_DEVICE_CONTROL_1);
+	control_2 = ec_read(EC_DEVICE_CONTROL_2);
+
+	printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1);
+	printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2);
+
+	control_1 &= ~(EC_DEVICE_CONTROL_1_BOOMER_ON);
+	control_2 &= ~(EC_DEVICE_CONTROL_2_USB_ON | EC_DEVICE_CONTROL_2_MPI_ON);
+
+	ec_write(EC_DEVICE_CONTROL_1, control_1);
+	ec_write(EC_DEVICE_CONTROL_2, control_2);
+
+	printk(BIOS_INFO, "EC current  EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1));
+	printk(BIOS_INFO, "EC current  EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2));
+}