soc/intel/*/pmc: Add `finalize` operation for pmc

This patch implements the required operations to perform prior to
booting to OS using coreboot native driver when platform decides
to skip FSP notify APIs, i.e., Ready to Boot and End Of Firmware.

Additionally, move the PMCON status bit clear operation to `.final` ops
to cover any such chances where FSP-S Notify Phase or any other later
boot stage may request a global reset and PMCON status bit remains set.

BUG=b:211954778
TEST=Able to build brya with these changes.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I0a0b869849d5d8c76031b8999f3d28817ac69247
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61649
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

7 files changed, 112 insertions, 0 deletions

diff --git a/src/soc/intel/alderlake/pmc.c b/src/soc/intel/alderlake/pmc.c
index 0d523686d8..cce095ab22 100644
--- a/src/soc/intel/alderlake/pmc.c
+++ b/src/soc/intel/alderlake/pmc.c
@@ -171,6 +171,22 @@ static void pm1_enable_pwrbtn_smi(void *unused)
 
 BOOT_STATE_INIT_ENTRY(BS_DEV_INIT_CHIPS, BS_ON_EXIT, pm1_enable_pwrbtn_smi, NULL);
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources	  = soc_pmc_read_resources,
 	.set_resources	  = noop_set_resources,
@@ -180,4 +196,5 @@ struct device_operations pmc_ops = {
 	.acpi_fill_ssdt	  = soc_pmc_fill_ssdt,
 #endif
 	.scan_bus	  = scan_static_bus,
+	.final		  = pmc_final,
 };
diff --git a/src/soc/intel/cannonlake/pmc.c b/src/soc/intel/cannonlake/pmc.c
index 4c88685d04..b0febd072b 100644
--- a/src/soc/intel/cannonlake/pmc.c
+++ b/src/soc/intel/cannonlake/pmc.c
@@ -135,6 +135,22 @@ static void pmc_fill_ssdt(const struct device *dev)
 		generate_acpi_power_engine();
 }
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources	  = soc_pmc_read_resources,
 	.set_resources	  = noop_set_resources,
@@ -144,4 +160,5 @@ struct device_operations pmc_ops = {
 	.acpi_fill_ssdt	  = pmc_fill_ssdt,
 #endif
 	.scan_bus	  = scan_static_bus,
+	.final		  = pmc_final,
 };
diff --git a/src/soc/intel/common/block/pmc/pmc.c b/src/soc/intel/common/block/pmc/pmc.c
index 8598cb5d77..333bace04f 100644
--- a/src/soc/intel/common/block/pmc/pmc.c
+++ b/src/soc/intel/common/block/pmc/pmc.c
@@ -8,6 +8,7 @@
 #include <intelblocks/acpi.h>
 #include <intelblocks/pmc.h>
 #include <soc/pci_devs.h>
+#include <soc/pm.h>
 
 static void pch_pmc_add_new_resource(struct device *dev,
 		uint8_t offset, uintptr_t base, size_t size,
@@ -80,6 +81,22 @@ static void pmc_fill_ssdt(const struct device *dev)
 		generate_acpi_power_engine();
 }
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 static struct device_operations device_ops = {
 	.read_resources		= pch_pmc_read_resources,
 	.set_resources		= pci_dev_set_resources,
@@ -90,6 +107,7 @@ static struct device_operations device_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_fill_ssdt		= pmc_fill_ssdt,
 #endif
+	.final			= pmc_final,
 };
 
 static const unsigned short pci_device_ids[] = {
diff --git a/src/soc/intel/elkhartlake/pmc.c b/src/soc/intel/elkhartlake/pmc.c
index 53193ea11e..cf736dd2ca 100644
--- a/src/soc/intel/elkhartlake/pmc.c
+++ b/src/soc/intel/elkhartlake/pmc.c
@@ -109,6 +109,22 @@ static void pmc_fill_ssdt(const struct device *dev)
 		generate_acpi_power_engine();
 }
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources		= soc_pmc_read_resources,
 	.set_resources		= noop_set_resources,
@@ -117,4 +133,5 @@ struct device_operations pmc_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_fill_ssdt		= pmc_fill_ssdt,
 #endif
+	.final			= pmc_final,
 };
diff --git a/src/soc/intel/icelake/pmc.c b/src/soc/intel/icelake/pmc.c
index fd91cde57d..c0096007be 100644
--- a/src/soc/intel/icelake/pmc.c
+++ b/src/soc/intel/icelake/pmc.c
@@ -75,6 +75,15 @@ static void pmc_init(void *unused)
 	 */
 	if (!CONFIG(USE_PM_ACPI_TIMER))
 		setbits8(pmc_mmio_regs() + PCH_PWRM_ACPI_TMR_CTL, ACPI_TIM_DIS);
+
+	/*
+	 * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+	 *
+	 * Perform the PMCON status bit clear operation from `.final`
+	 * to cover any such chances where later boot stage requested a global
+	 * reset and PMCON status bit remains set.
+	 */
+	pmc_clear_pmcon_sts();
 }
 
 /*
diff --git a/src/soc/intel/jasperlake/pmc.c b/src/soc/intel/jasperlake/pmc.c
index 47c3bb104b..5ad692b73f 100644
--- a/src/soc/intel/jasperlake/pmc.c
+++ b/src/soc/intel/jasperlake/pmc.c
@@ -117,6 +117,22 @@ static void pmc_fill_ssdt(const struct device *dev)
 		generate_acpi_power_engine();
 }
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources		= soc_pmc_read_resources,
 	.set_resources		= noop_set_resources,
@@ -125,4 +141,5 @@ struct device_operations pmc_ops = {
 #if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_fill_ssdt		= pmc_fill_ssdt,
 #endif
+	.final			= pmc_final,
 };
diff --git a/src/soc/intel/tigerlake/pmc.c b/src/soc/intel/tigerlake/pmc.c
index 8788170368..937943a029 100644
--- a/src/soc/intel/tigerlake/pmc.c
+++ b/src/soc/intel/tigerlake/pmc.c
@@ -170,6 +170,22 @@ static void pm1_enable_pwrbtn_smi(void *unused)
 
 BOOT_STATE_INIT_ENTRY(BS_DEV_INIT_CHIPS, BS_ON_EXIT, pm1_enable_pwrbtn_smi, NULL);
 
+/*
+ * `pmc_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ *
+ *
+ * Clear PMCON status bits (Global Reset/Power Failure/Host Reset Status bits)
+ *
+ * Perform the PMCON status bit clear operation from `.final`
+ * to cover any such chances where later boot stage requested a global
+ * reset and PMCON status bit remains set.
+ */
+static void pmc_final(struct device *dev)
+{
+	pmc_clear_pmcon_sts();
+}
+
 struct device_operations pmc_ops = {
 	.read_resources	  = soc_pmc_read_resources,
 	.set_resources	  = noop_set_resources,
@@ -179,4 +195,5 @@ struct device_operations pmc_ops = {
 	.acpi_fill_ssdt	  = soc_pmc_fill_ssdt,
 #endif
 	.scan_bus	  = scan_static_bus,
+	.final		  = pmc_final,
 };