2 files changed, 73 insertions, 0 deletions
diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c
new file mode 100644
index 000000000000..8027a24d1c6e
--- /dev/null
+++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Automatically generated functions to read TDX global metadata.
+ *
+ * This file doesn't compile on its own as it lacks of inclusion
+ * of SEAMCALL wrapper primitive which reads global metadata.
+ * Include this file to other C file instead.
+ */
+
+static int get_tdx_sys_info_features(struct tdx_sys_info_features *sysinfo_features)
+{
+	int ret = 0;
+	u64 val;
+
+	if (!ret && !(ret = read_sys_metadata_field(0x0A00000300000008, &val)))
+		sysinfo_features->tdx_features0 = val;
+
+	return ret;
+}
+
+static int get_tdx_sys_info_tdmr(struct tdx_sys_info_tdmr *sysinfo_tdmr)
+{
+	int ret = 0;
+	u64 val;
+
+	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000008, &val)))
+		sysinfo_tdmr->max_tdmrs = val;
+	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000009, &val)))
+		sysinfo_tdmr->max_reserved_per_tdmr = val;
+	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000010, &val)))
+		sysinfo_tdmr->pamt_4k_entry_size = val;
+	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000011, &val)))
+		sysinfo_tdmr->pamt_2m_entry_size = val;
+	if (!ret && !(ret = read_sys_metadata_field(0x9100000100000012, &val)))
+		sysinfo_tdmr->pamt_1g_entry_size = val;
+
+	return ret;
+}
+
+static int get_tdx_sys_info(struct tdx_sys_info *sysinfo)
+{
+	int ret = 0;
+
+	ret = ret ?: get_tdx_sys_info_features(&sysinfo->features);
+	ret = ret ?: get_tdx_sys_info_tdmr(&sysinfo->tdmr);
+
+	return ret;
+}
diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.h b/arch/x86/virt/vmx/tdx/tdx_global_metadata.h
new file mode 100644
index 000000000000..6dd3c9695f59
--- /dev/null
+++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Automatically generated TDX global metadata structures. */
+#ifndef _X86_VIRT_TDX_AUTO_GENERATED_TDX_GLOBAL_METADATA_H
+#define _X86_VIRT_TDX_AUTO_GENERATED_TDX_GLOBAL_METADATA_H
+
+#include <linux/types.h>
+
+struct tdx_sys_info_features {
+	u64 tdx_features0;
+};
+
+struct tdx_sys_info_tdmr {
+	u16 max_tdmrs;
+	u16 max_reserved_per_tdmr;
+	u16 pamt_4k_entry_size;
+	u16 pamt_2m_entry_size;
+	u16 pamt_1g_entry_size;
+};
+
+struct tdx_sys_info {
+	struct tdx_sys_info_features features;
+	struct tdx_sys_info_tdmr tdmr;
+};
+
+#endif