[PATCH v3 20/57] x86: Add some definitions for SMM

Simon Glass
2020-09-06T21:43:28Z

U-Boot does not support SMM (System Management Mode) at present, but needs
a few definitions to correctly set up the ACPI table. Add these.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

(no changes since v1)

arch/x86/include/asm/smm.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 arch/x86/include/asm/smm.h

diff --git a/arch/x86/include/asm/smm.h b/arch/x86/include/asm/smm.h
new file mode 100644
index 00000000000..1e539fda067
--- /dev/null
+++ b/arch/x86/include/asm/smm.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * SMM definitions (U-Boot does not support SMM itself)
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright 2019 Google LLC
+ *
+ * Modified from coreboot smm.h
+ */
+
+#ifndef _ASM_SMM_H
+#define _ASM_SMM_H
+
+#define APM_CNT 0xb2
+#define APM_CNT_CST_CONTROL 0x85
+#define APM_CNT_PST_CONTROL 0x80
+#define APM_CNT_ACPI_DISABLE 0x1e
+#define APM_CNT_ACPI_ENABLE 0xe1
+#define APM_CNT_MBI_UPDATE 0xeb
+#define APM_CNT_GNVS_UPDATE 0xea
+#define APM_CNT_FINALIZE 0xcb
+#define APM_CNT_LEGACY 0xcc
+#define APM_CNT_SMMSTORE 0xed
+#define APM_CNT_ELOG_GSMI 0xef
+#define APM_STS 0xb3
+
+#endif /* _ASM_SMM_H */
--
2.28.0.526.ge36021eeef-goog