[077/108] x86: Add some definitions for SMM

Message ID 20200126220508.77.Ie0798fbf2b61afd6f2011e8b5f58cba679834675@changeid
State New
Headers show
Series
  • RFC: dm: Add programatic generation of ACPI tables
Related show

Commit Message

Simon Glass Jan. 27, 2020, 5:06 a.m.
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

Patch

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 */