108 lines
2.4 KiB
Diff
108 lines
2.4 KiB
Diff
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From 2bdf07593dbec66205f2f20fa5430595678ded89 Mon Sep 17 00:00:00 2001
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From: hanliyang <hanliyang@hygon.cn>
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Date: Thu, 14 Mar 2024 19:21:11 +0800
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Subject: [PATCH] target/i386: Introduce header file csv.h
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This header file is used to provide common helper functions
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and data structures for Hygon CSV.
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Signed-off-by: hanliyang <hanliyang@hygon.cn>
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---
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configs/devices/i386-softmmu/default.mak | 1 +
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hw/i386/Kconfig | 5 +++
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target/i386/csv.h | 47 ++++++++++++++++++++++++
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3 files changed, 53 insertions(+)
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create mode 100644 target/i386/csv.h
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diff --git a/configs/devices/i386-softmmu/default.mak b/configs/devices/i386-softmmu/default.mak
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index 598c6646df..db83ffcab9 100644
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--- a/configs/devices/i386-softmmu/default.mak
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+++ b/configs/devices/i386-softmmu/default.mak
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@@ -23,6 +23,7 @@
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#CONFIG_TPM_TIS_ISA=n
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#CONFIG_VTD=n
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#CONFIG_SGX=n
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+#CONFIG_CSV=n
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# Boards:
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#
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diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
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index 55850791df..08f3ae43f8 100644
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--- a/hw/i386/Kconfig
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+++ b/hw/i386/Kconfig
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@@ -10,6 +10,10 @@ config SGX
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bool
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depends on KVM
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+config CSV
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+ bool
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+ depends on SEV
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+
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config PC
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bool
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imply APPLESMC
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@@ -26,6 +30,7 @@ config PC
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imply QXL
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imply SEV
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imply SGX
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+ imply CSV
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imply TEST_DEVICES
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imply TPM_CRB
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imply TPM_TIS_ISA
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diff --git a/target/i386/csv.h b/target/i386/csv.h
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new file mode 100644
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index 0000000000..f935babe97
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--- /dev/null
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+++ b/target/i386/csv.h
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@@ -0,0 +1,47 @@
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+/*
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+ * QEMU CSV support
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+ *
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+ * Copyright: Hygon Info Technologies Ltd. 2022
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+ *
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+ * Author:
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+ * Jiang Xin <jiangxin@hygon.cn>
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+ *
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+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
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+ * See the COPYING file in the top-level directory.
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+ *
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+ */
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+
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+#ifndef I386_CSV_H
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+#define I386_CSV_H
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+
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+#ifdef CONFIG_CSV
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+
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+#include "cpu.h"
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+
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+#define CPUID_VENDOR_HYGON_EBX 0x6f677948 /* "Hygo" */
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+#define CPUID_VENDOR_HYGON_ECX 0x656e6975 /* "uine" */
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+#define CPUID_VENDOR_HYGON_EDX 0x6e65476e /* "nGen" */
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+
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+static bool __attribute__((unused)) is_hygon_cpu(void)
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+{
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+ uint32_t ebx = 0;
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+ uint32_t ecx = 0;
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+ uint32_t edx = 0;
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+
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+ host_cpuid(0, 0, NULL, &ebx, &ecx, &edx);
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+
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+ if (ebx == CPUID_VENDOR_HYGON_EBX &&
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+ ecx == CPUID_VENDOR_HYGON_ECX &&
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+ edx == CPUID_VENDOR_HYGON_EDX)
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+ return true;
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+ else
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+ return false;
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+}
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+
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+#else
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+
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+#define is_hygon_cpu() (false)
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+
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+#endif
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+
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+#endif
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--
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2.41.0.windows.1
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