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authorDuncan Laurie <dlaurie@chromium.org>2013-10-02 16:10:54 -0700
committerMarc Jones <marc.jones@se-eng.com>2014-08-29 06:48:01 +0200
commitddc3e42c2267fe175dcc28e38f53f0adecf1aa4e (patch)
tree66326a007407b0efcdcef7121a64f6a0263d2d57 /src/mainboard/google/samus/smihandler.c
parentca436cb247a78b234feb7975575883bdcbabc348 (diff)
downloadcoreboot-ddc3e42c2267fe175dcc28e38f53f0adecf1aa4e.tar.xz
samus: Add coreboot board
Add the coreboot board files for samus - Based on Bolt - GPIO setup based on 0.91 schematic - Support both memory types - No HDA verb table for this platform - Some GPIO interrupts are shared and need to be passed to OS Change-Id: I8dbd7639456c631a0115b03a493d94b5e2361ab5 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/171694 Reviewed-by: Aaron Durbin <adurbin@chromium.org> (cherry picked from commit 249a74c628264e3d4ce754803ede31238404b4d5) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6775 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/google/samus/smihandler.c')
-rw-r--r--src/mainboard/google/samus/smihandler.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/src/mainboard/google/samus/smihandler.c b/src/mainboard/google/samus/smihandler.c
new file mode 100644
index 0000000000..7cbe9d67c0
--- /dev/null
+++ b/src/mainboard/google/samus/smihandler.c
@@ -0,0 +1,197 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright 2013 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <southbridge/intel/lynxpoint/lp_gpio.h>
+#include <southbridge/intel/lynxpoint/nvs.h>
+#include <southbridge/intel/lynxpoint/pch.h>
+#include <southbridge/intel/lynxpoint/me.h>
+#include <northbridge/intel/haswell/haswell.h>
+#include <cpu/intel/haswell/haswell.h>
+#include <elog.h>
+
+/* Include EC functions */
+#include <ec/google/chromeec/ec.h>
+#include "ec.h"
+
+/* GPIO46 controls the WLAN_DISABLE_L signal. */
+#define GPIO_WLAN_DISABLE_L 46
+#define GPIO_LTE_DISABLE_L 59
+
+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.
+ */
+ //gnvs->smif = 0;
+ return 1;
+}
+
+static u8 mainboard_smi_ec(void)
+{
+ u8 cmd = google_chromeec_get_event();
+ u32 pm1_cnt;
+
+#if CONFIG_ELOG_GSMI
+ /* Log this event */
+ if (cmd)
+ elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
+#endif
+
+ switch (cmd) {
+ case EC_HOST_EVENT_LID_CLOSED:
+ printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
+
+ /* Go to S5 */
+ pm1_cnt = inl(get_pmbase() + PM1_CNT);
+ pm1_cnt |= (0xf << 10);
+ outl(pm1_cnt, get_pmbase() + PM1_CNT);
+ break;
+ }
+
+ return cmd;
+}
+
+/* gpi_sts is GPIO 47:32 */
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+ if (gpi_sts & (1 << (EC_SMI_GPI - 32))) {
+ /* Process all pending events */
+ while (mainboard_smi_ec() != 0);
+ }
+}
+
+static void mainboard_wlan_off(void)
+{
+ u16 gpio_base = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc;
+ u32 gpio_conf;
+
+ /* Make sure pin is owned by GPIO subsystem and not ACPI */
+ gpio_conf = inl(gpio_base + GPIO_OWNER(0));
+ gpio_conf |= GPIO_OWNER_GPIO << 29;
+ outl(gpio_conf, gpio_base + GPIO_OWNER(0));
+
+ /* Set GPIO29 config to only be reset on RSMRST */
+ gpio_conf = inl(gpio_base + GPIO_RESET(0));
+ gpio_conf |= GPIO_RESET_RSMRST << 29;
+ outl(gpio_conf, gpio_base + GPIO_RESET(0));
+
+ /* Set WLAN_OFF_L (GPIO29) as Output GPIO driven high */
+ gpio_conf = GPIO_MODE_GPIO | GPIO_DIR_OUTPUT | GPO_LEVEL_HIGH;
+ outl(gpio_conf, gpio_base + GPIO_CONFIG0(29));
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+ /* 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);
+ if (smm_get_gnvs()->s3u1 == 0)
+ google_chromeec_set_usb_charge_mode(
+ 1, USB_CHARGE_MODE_DISABLED);
+
+ /* Prevent leak from standby rail to WLAN rail in S3. */
+ set_gpio(GPIO_WLAN_DISABLE_L, 0);
+ /* Disable LTE */
+ set_gpio(GPIO_LTE_DISABLE_L, 0);
+
+ /* 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);
+ if (smm_get_gnvs()->s5u1 == 0)
+ google_chromeec_set_usb_charge_mode(
+ 1, USB_CHARGE_MODE_DISABLED);
+
+ /* Prevent leak from standby rail to WLAN rail in S5. */
+ set_gpio(GPIO_WLAN_DISABLE_L, 0);
+ /* Disable LTE */
+ set_gpio(GPIO_LTE_DISABLE_L, 0);
+
+ /* Enable wake events */
+ google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS);
+ break;
+ }
+
+ /* Set WLAN_OFF GPIO state */
+ mainboard_wlan_off();
+
+ /* 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);
+}
+
+#define APMC_FINALIZE 0xcb
+
+static int mainboard_finalized = 0;
+
+int mainboard_smi_apmc(u8 apmc)
+{
+ switch (apmc) {
+ case APMC_FINALIZE:
+ if (mainboard_finalized) {
+ printk(BIOS_DEBUG, "SMI#: Already finalized\n");
+ return 0;
+ }
+
+ intel_pch_finalize_smm();
+ intel_northbridge_haswell_finalize_smm();
+ intel_cpu_haswell_finalize_smm();
+
+ mainboard_finalized = 1;
+ break;
+ 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;
+ }
+ return 0;
+}