summaryrefslogtreecommitdiff
path: root/src/mainboard/google/glados/smihandler.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mainboard/google/glados/smihandler.c')
-rw-r--r--src/mainboard/google/glados/smihandler.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/mainboard/google/glados/smihandler.c b/src/mainboard/google/glados/smihandler.c
new file mode 100644
index 0000000000..164bd8e465
--- /dev/null
+++ b/src/mainboard/google/glados/smihandler.c
@@ -0,0 +1,147 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2015 Google Inc.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <elog.h>
+#include <ec/google/chromeec/ec.h>
+#include <soc/iomap.h>
+#include <soc/nvs.h>
+#include <soc/pm.h>
+#include <soc/smm.h>
+#include "ec.h"
+
+int mainboard_io_trap_handler(int smif)
+{
+ switch (smif) {
+ case 0x99:
+ printk(BIOS_DEBUG, "Sample\n");
+ smm_get_gnvs()->smif = 0;
+ break;
+ default:
+ return 0;
+ }
+
+ /* On success, the IO Trap Handler returns 0
+ * On failure, the IO Trap Handler returns a value != 0
+ *
+ * For now, we force the return value to 0 and log all traps to
+ * see what's going on.
+ */
+ return 1;
+}
+
+static u8 mainboard_smi_ec(void)
+{
+ u8 cmd = 0;
+#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
+ u32 pm1_cnt;
+ cmd = google_chromeec_get_event();
+
+ /* Log this event */
+ if (IS_ENABLED(CONFIG_ELOG_GSMI) && cmd)
+ elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
+
+ switch (cmd) {
+ case EC_HOST_EVENT_LID_CLOSED:
+ printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
+
+ /* Go to S5 */
+ pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+ pm1_cnt |= (0xf << 10);
+ outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
+ break;
+ }
+#endif
+ return cmd;
+}
+
+/* gpi_sts is GPIO 47:32 */
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+ if (gpi_sts & (1 << EC_SMI_GPI)) {
+ /* Process all pending events */
+ while (mainboard_smi_ec() != 0)
+ ;
+ }
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
+ /* Disable USB charging if required */
+ switch (slp_typ) {
+ case 3:
+ if (smm_get_gnvs()->s3u0 == 0) {
+ google_chromeec_set_usb_charge_mode(
+ 0, USB_CHARGE_MODE_DISABLED);
+ google_chromeec_set_usb_charge_mode(
+ 1, USB_CHARGE_MODE_DISABLED);
+ }
+
+ /* Enable wake events */
+ google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS);
+ break;
+ case 5:
+ if (smm_get_gnvs()->s5u0 == 0) {
+ google_chromeec_set_usb_charge_mode(
+ 0, USB_CHARGE_MODE_DISABLED);
+ google_chromeec_set_usb_charge_mode(
+ 1, USB_CHARGE_MODE_DISABLED);
+ }
+
+ /* Enable wake events */
+ google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS);
+ break;
+ }
+
+ /* Disable SCI and SMI events */
+ google_chromeec_set_smi_mask(0);
+ google_chromeec_set_sci_mask(0);
+
+ /* Clear pending events that may trigger immediate wake */
+ while (google_chromeec_get_event() != 0)
+ ;
+#endif
+}
+
+int mainboard_smi_apmc(u8 apmc)
+{
+#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
+ switch (apmc) {
+ case APM_CNT_ACPI_ENABLE:
+ google_chromeec_set_smi_mask(0);
+ /* Clear all pending events */
+ while (google_chromeec_get_event() != 0)
+ ;
+ google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
+ break;
+ case APM_CNT_ACPI_DISABLE:
+ google_chromeec_set_sci_mask(0);
+ /* Clear all pending events */
+ while (google_chromeec_get_event() != 0)
+ ;
+ google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS);
+ break;
+ }
+#endif
+ return 0;
+}