[PATCH 077/108] x86: Add some definitions for SMM
Simon Glass
sjg at chromium.org
Mon Jan 27 06:06:24 CET 2020
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 at chromium.org>
---
arch/x86/include/asm/smm.h | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 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 0000000000..a74e3829b6
--- /dev/null
+++ b/arch/x86/include/asm/smm.h
@@ -0,0 +1,36 @@
+/* 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 CPU_X86_SMM_H
+#define CPU_X86_SMM_H
+
+#define SMM_DEFAULT_BASE 0x30000
+#define SMM_DEFAULT_SIZE 0x10000
+
+/* used only by C programs so far */
+#define SMM_BASE 0xa0000
+
+#define SMM_ENTRY_OFFSET 0x8000
+#define SMM_SAVE_STATE_BEGIN(x) (SMM_ENTRY_OFFSET + (x))
+
+#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 /* CPU_X86_SMM_H */
--
2.25.0.341.g760bfbb309-goog
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