soc/amd/common/block/acpi: Extract event logging helpers

Move the event logging helpers defined in acpi into a separate library.
This will allow logging power management and GPE events for both S3 and
Modern Standby. Introduce a single helper acpi_log_events function to
log both PM and GPE events.

BUG=None
TEST=Build and boot to OS in Guybrush.

Change-Id: I96df66edfc824eb3db108098a560d33d758f55ba
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56360
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/soc/amd/common/block/acpi/Makefile.inc

@@ -13,4 +13,7 @@ ramstage-$(CONFIG_ACPI_BERT) += bert.c
 ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPI_ALIB) += alib.c
 ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPI_GPIO) += gpio.c
 
+romstage-y += elog.c
+ramstage-y += elog.c
+
 endif # CONFIG_SOC_AMD_COMMON_BLOCK_ACPI

src/soc/amd/common/block/acpi/acpi.c

@@ -1,12 +1,11 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <amdblocks/acpimmio.h>
-#include <amdblocks/acpi.h>
 #include <acpi/acpi.h>
 #include <acpi/acpi_pm.h>
+#include <amdblocks/acpimmio.h>
+#include <amdblocks/acpi.h>
 #include <bootmode.h>
 #include <console/console.h>
-#include <elog.h>
 #include <halt.h>
 #include <security/vboot/vboot_common.h>
 #include <soc/southbridge.h>
@@ -65,36 +64,6 @@ static uint16_t print_pm1_status(uint16_t pm1_sts)
 	return pm1_sts;
 }
 
-static void log_pm1_status(uint16_t pm1_sts)
-{
-	if (!CONFIG(ELOG))
-		return;
-
-	if (pm1_sts & WAK_STS)
-		elog_add_event_byte(ELOG_TYPE_ACPI_WAKE,
-				    acpi_is_wakeup_s3() ? ACPI_S3 : ACPI_S5);
-
-	if (pm1_sts & PWRBTN_STS)
-		elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
-
-	if (pm1_sts & RTC_STS)
-		elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
-
-	if (pm1_sts & PCIEXPWAK_STS)
-		elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
-}
-
-static void log_gpe_events(const struct acpi_pm_gpe_state *state)
-{
-	int i;
-	uint32_t valid_gpe = state->gpe0_sts & state->gpe0_en;
-
-	for (i = 0; i <= 31; i++) {
-		if (valid_gpe & (1U << i))
-			elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i);
-	}
-}
-
 void acpi_fill_pm_gpe_state(struct acpi_pm_gpe_state *state)
 {
 	state->pm1_sts = acpi_read16(MMIO_ACPI_PM1_STS);
@@ -114,9 +83,8 @@ void acpi_pm_gpe_add_events_print_events(void)
 		return;
 
 	state = &ps->gpe_state;
-	log_pm1_status(state->pm1_sts);
 	print_pm1_status(state->pm1_sts);
-	log_gpe_events(state);
+	acpi_log_events(ps);
 }
 
 void acpi_clear_pm_gpe_status(void)

src/soc/amd/common/block/acpi/elog.c

@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/acpi.h>
+#include <elog.h>
+#include <soc/southbridge.h>
+
+static void elog_pm1_status(const struct acpi_pm_gpe_state *state)
+{
+	uint16_t pm1_sts = state->pm1_sts;
+
+	if (pm1_sts & WAK_STS)
+		elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, state->previous_sx_state);
+
+	if (pm1_sts & PWRBTN_STS)
+		elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
+
+	if (pm1_sts & RTC_STS)
+		elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
+
+	if (pm1_sts & PCIEXPWAK_STS)
+		elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
+}
+
+static void elog_gpe_events(const struct acpi_pm_gpe_state *state)
+{
+	int i;
+	uint32_t valid_gpe = state->gpe0_sts & state->gpe0_en;
+
+	for (i = 0; i <= 31; i++) {
+		if (valid_gpe & (1U << i))
+			elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i);
+	}
+}
+
+void acpi_log_events(const struct chipset_power_state *ps)
+{
+	elog_pm1_status(&ps->gpe_state);
+	elog_gpe_events(&ps->gpe_state);
+}

src/soc/amd/common/block/include/amdblocks/acpi.h

@@ -59,4 +59,6 @@ void acpi_fill_root_complex_tom(const struct device *device);
 uintptr_t add_agesa_fsp_acpi_table(guid_t guid, const char *name, acpi_rsdp_t *rsdp,
 				   uintptr_t current);
 
+void acpi_log_events(const struct chipset_power_state *ps);
+
 #endif /* AMD_BLOCK_ACPI_H */