soc/amd/genoa: Add Global NVS

Change-Id: I8d64236fc81e848503535db6f52e93328a60404c
Signed-off-by: Varshit Pandya <pandyavarshit@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78391
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>

2 files changed, 35 insertions, 0 deletions

diff --git a/src/soc/amd/genoa/acpi/globalnvs.asl b/src/soc/amd/genoa/acpi/globalnvs.asl
new file mode 100644
index 0000000000..23c53ee854
--- /dev/null
+++ b/src/soc/amd/genoa/acpi/globalnvs.asl
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/*
+ * NOTE: The layout of the GNVS structure below must match the layout in
+ * soc/amd/genoa/include/soc/nvs.h !!!
+ */
+
+Field (GNVS, ByteAcc, NoLock, Preserve)
+{
+	/* Miscellaneous */
+	PM1I,	64,	// 0x00 - 0x07 - System Wake Source - PM1 Index
+	GPEI,	64,	// 0x08 - 0x0f - GPE Wake Source
+}
diff --git a/src/soc/amd/genoa/include/soc/nvs.h b/src/soc/amd/genoa/include/soc/nvs.h
new file mode 100644
index 0000000000..cbc9ba9b4d
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/nvs.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/* TODO: Check if this is still correct */
+
+/*
+ * NOTE: The layout of the global_nvs structure below must match the layout
+ * in soc/soc/amd/genoa/acpi/globalnvs.asl !!!
+ *
+ */
+
+#ifndef AMD_GENOA_NVS_H
+#define AMD_GENOA_NVS_H
+
+#include <stdint.h>
+
+struct __packed global_nvs {
+	/* Miscellaneous */
+	uint64_t	pm1i; /* 0x00 - 0x07 - System Wake Source - PM1 Index */
+	uint64_t	gpei; /* 0x08 - 0x0f - GPE Wake Source */
+};
+
+#endif /* AMD_GENOA_NVS_H */