mb/google/mancomb: Add smihandler

BUG=b:182211161
TEST=builds

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I52411917d9e7e8f8d9ac5d1c9b426a58ba09f5ae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51625
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mathew King <mathewk@chromium.org>

src/mainboard/google/mancomb/Kconfig

@@ -11,6 +11,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_16384
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_ESPI
+	select ELOG
+	select ELOG_GSMI
 	select HAVE_ACPI_RESUME
 	select MAINBOARD_HAS_CHROMEOS
 	select SOC_AMD_CEZANNE

src/mainboard/google/mancomb/smihandler.c

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <cpu/x86/smm.h>
+#include <ec/google/chromeec/ec.h>
+#include <ec/google/chromeec/smm.h>
+#include <elog.h>
+#include <variant/ec.h>
+
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+	chromeec_smi_process_events();
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+	size_t num_gpios;
+	const struct soc_amd_gpio *gpios;
+
+	chromeec_smi_sleep(slp_typ, MAINBOARD_EC_S3_WAKE_EVENTS, MAINBOARD_EC_S5_WAKE_EVENTS);
+
+	gpios = variant_sleep_gpio_table(&num_gpios);
+	program_gpios(gpios, num_gpios);
+}
+
+int mainboard_smi_apmc(u8 apmc)
+{
+	chromeec_smi_apmc(apmc, MAINBOARD_EC_SCI_EVENTS, MAINBOARD_EC_SMI_EVENTS);
+
+	return 0;
+}
+
+void elog_gsmi_cb_mainboard_log_wake_source(void)
+{
+	google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS | MAINBOARD_EC_S0IX_WAKE_EVENTS);
+}

src/mainboard/google/mancomb/variants/baseboard/Makefile.inc

@@ -3,3 +3,5 @@ bootblock-y += gpio.c
 ramstage-y += gpio.c
 
 verstage-y += gpio.c
+
+smm-y += gpio.c

src/mainboard/google/mancomb/variants/baseboard/gpio.c

@@ -168,6 +168,11 @@ static const struct soc_amd_gpio early_gpio_table[] = {
 	PAD_NF(GPIO_108, ESPI_ALERT_D1, PULL_NONE),
 };
 
+/* GPIO configuration for sleep */
+static const struct soc_amd_gpio sleep_gpio_table[] = {
+	/* TODO: Fill sleep gpio configuration */
+};
+
 const struct soc_amd_gpio *__weak variant_base_gpio_table(size_t *size)
 {
 	*size = ARRAY_SIZE(base_gpio_table);
@@ -183,3 +188,8 @@ const struct soc_amd_gpio *__weak variant_early_gpio_table(size_t *size)
 	*size = ARRAY_SIZE(early_gpio_table);
 	return early_gpio_table;
 }
+const __weak struct soc_amd_gpio *variant_sleep_gpio_table(size_t *size)
+{
+	*size = ARRAY_SIZE(sleep_gpio_table);
+	return sleep_gpio_table;
+}

src/mainboard/google/mancomb/variants/baseboard/include/baseboard/variants.h

@@ -21,4 +21,7 @@ const struct soc_amd_gpio *variant_override_gpio_table(size_t *size);
 /* This function provides early GPIO init in bootblock or psp. */
 const struct soc_amd_gpio *variant_early_gpio_table(size_t *size);
 
+/* This function provides GPIO settings before entering sleep. */
+const struct soc_amd_gpio *variant_sleep_gpio_table(size_t *size);
+
 #endif /* __BASEBOARD_VARIANTS_H__ */