1 files changed, 46 insertions, 0 deletions
diff --git a/src/soc/amd/sabrina/psp_verstage/chipset.c b/src/soc/amd/sabrina/psp_verstage/chipset.c
new file mode 100644
index 000000000000..e82a1328308b
--- /dev/null
+++ b/src/soc/amd/sabrina/psp_verstage/chipset.c
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Check if this is still correct */
+
+#include <bl_uapp/bl_syscall_public.h>
+#include <psp_verstage.h>
+
+uint32_t update_psp_bios_dir(uint32_t *psp_dir_offset, uint32_t *bios_dir_offset)
+{
+	return svc_update_psp_bios_dir(psp_dir_offset, bios_dir_offset);
+}
+
+uint32_t save_uapp_data(void *address, uint32_t size)
+{
+	return svc_save_uapp_data(address, size);
+}
+
+uint32_t get_bios_dir_addr(struct embedded_firmware *ef_table)
+{
+	return ef_table->bios3_entry;
+}
+
+int platform_set_sha_op(enum vb2_hash_algorithm hash_alg,
+			struct sha_generic_data *sha_op)
+{
+	if (hash_alg == VB2_HASH_SHA256) {
+		sha_op->SHAType = SHA_TYPE_256;
+		sha_op->DigestLen = 32;
+	} else if (hash_alg == VB2_HASH_SHA384) {
+		sha_op->SHAType = SHA_TYPE_384;
+		sha_op->DigestLen = 48;
+	} else {
+		return -1;
+	}
+	return 0;
+}
+
+
+/* Functions below are stub functions for not-yet-implemented PSP features.
+ * These functions should be replaced with proper implementations later.
+ */
+
+uint32_t svc_write_postcode(uint32_t postcode)
+{
+	return 0;
+}