vc/amd/opensil: add openSIL stub implementation

Add a stub implementation of the openSIL interface between coreboot and
vendorcode. This can be used to add most of the coreboot-side support
for a SoC using openSIL without the actual opnSIL code already being
publicly available. Once the corresponding openSIL code is available,
the SoC can then switch over to using the actual openSIL implementation.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9284b0cbacba6eae7e2e7e69bc687f015076c2b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80292
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/vendorcode/amd/opensil/stub/opensil.h b/src/vendorcode/amd/opensil/stub/opensil.h
new file mode 100644
index 0000000000..caa7b136a0
--- /dev/null
+++ b/src/vendorcode/amd/opensil/stub/opensil.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _OPENSIL_H_
+#define _OPENSIL_H_
+
+#include <acpi/acpi.h>
+
+// Add the memory map to dev, starting at index idx, returns last use idx
+void add_opensil_memmap(struct device *dev, unsigned long *idx);
+// Fill in FADT from openSIL
+void opensil_fill_fadt_io_ports(acpi_fadt_t *fadt);
+
+void setup_opensil(void);
+void opensil_xSIM_timepoint_1(void);
+void opensil_xSIM_timepoint_2(void);
+void opensil_xSIM_timepoint_3(void);
+
+#endif