This introduces quark-specific ACPI global NVS structure, defined in
both C header file and ASL file.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
arch/x86/cpu/quark/acpi.c | 7 +++++++
arch/x86/include/asm/arch-quark/acpi/global_nvs.asl | 12 ++++++++++++
arch/x86/include/asm/arch-quark/global_nvs.h | 20 ++++++++++++++++++++
3 files changed, 39 insertions(+)
create mode 100644 arch/x86/include/asm/arch-quark/acpi/global_nvs.asl
create mode 100644 arch/x86/include/asm/arch-quark/global_nvs.h
diff --git a/arch/x86/cpu/quark/acpi.c b/arch/x86/cpu/quark/acpi.c
index 8f69829..3968f7a 100644
--- a/arch/x86/cpu/quark/acpi.c
+++ b/arch/x86/cpu/quark/acpi.c
@@ -9,6 +9,7 @@
#include <asm/ioapic.h>
#include <asm/mpspec.h>
#include <asm/tables.h>
+#include <asm/arch/global_nvs.h>
#include <asm/arch/iomap.h>
void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
@@ -161,3 +162,9 @@ u32 acpi_fill_madt(u32 current)
return current;
}
+
+void acpi_create_gnvs(struct acpi_global_nvs *gnvs)
+{
+ /* quark is a uni-processor */
+ gnvs->pcnt = 1;
+}
diff --git a/arch/x86/include/asm/arch-quark/acpi/global_nvs.asl
b/arch/x86/include/asm/arch-quark/acpi/global_nvs.asl
new file mode 100644
index 0000000..3f9fd89
--- /dev/null
+++ b/arch/x86/include/asm/arch-quark/acpi/global_nvs.asl
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2016 Bin Meng <bmeng...@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+OperationRegion(GNVS, SystemMemory, 0xdeadbeef, 0x100)
+Field(GNVS, ByteAcc, NoLock, Preserve)
+{
+ Offset (0x00),
+ PCNT, 8, /* processor count */
+}
diff --git a/arch/x86/include/asm/arch-quark/global_nvs.h
b/arch/x86/include/asm/arch-quark/global_nvs.h
new file mode 100644
index 0000000..0231da0
--- /dev/null
+++ b/arch/x86/include/asm/arch-quark/global_nvs.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2016, Bin Meng <bmeng...@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _GLOBAL_NVS_H_
+#define _GLOBAL_NVS_H_
+
+struct __packed acpi_global_nvs {
+ u8 pcnt; /* processor count */
+
+ /*
+ * Add padding so sizeof(struct acpi_global_nvs) == 0x100.
+ * This must match the size defined in the global_nvs.asl.
+ */
+ u8 rsvd[255];
+};
+
+#endif /* _GLOBAL_NVS_H_ */
--
2.7.4
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