[PATCH v2 6/8] armv8: Add generic smbios information into the device tree

[Raymond Mao]

Add common smbios information that can be used by all armv8
platforms and set it as default for qemu-arm64.
>From now smbios library can load values from here for those fields
doesn't exist in the sysinfo driver.

To run this with QEMU arm64, please dump the generated DTB
from QEMU first, merge it with the one we build and then re-run
QEMU with the merged DTB.
```
qemu-system-arm -machine virt -machine dumpdtb=qemu.dtb
cat  <(dtc -I dtb qemu.dtb) <(dtc -I dtb ./dts/dt.dtb | \
  grep -v /dts-v1/) | dtc - -o merged.dtb
qemu-system-arm -machine virt -nographic -bios u-boot.bin \
  -dtb merged.dtb
```
For details please take reference on dt_qemu.rst

Signed-off-by: Raymond Mao <raymond.mao at linaro.org>
---
Changes in v2
- Initial patch.

 arch/arm/dts/qemu-arm64.dts      |  4 ++
 arch/arm/dts/smbios_generic.dtsi | 82 ++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 arch/arm/dts/smbios_generic.dtsi

diff --git a/arch/arm/dts/qemu-arm64.dts b/arch/arm/dts/qemu-arm64.dts
index 096b3910728..95fcf53ed74 100644
--- a/arch/arm/dts/qemu-arm64.dts
+++ b/arch/arm/dts/qemu-arm64.dts
@@ -7,5 +7,9 @@
 
 /dts-v1/;
 
+#if defined(CONFIG_SYSINFO_SMBIOS) && !defined(QFW_SMBIOS)
+#include "smbios_generic.dtsi"
+#endif
+
 / {
 };
diff --git a/arch/arm/dts/smbios_generic.dtsi b/arch/arm/dts/smbios_generic.dtsi
new file mode 100644
index 00000000000..c9f07283403
--- /dev/null
+++ b/arch/arm/dts/smbios_generic.dtsi
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Default SMBIOS information for Arm64 platforms
+ *
+ * Copyright (c) 2024 Linaro Limited
+ * Author: Raymond Mao <raymond.mao at linaro.org>
+ */
+#include <config.h>
+#include <smbios_def.h>
+
+/ {
+	smbios {
+		compatible = "u-boot,sysinfo-smbios";
+
+		smbios {
+			system {
+				manufacturer = CONFIG_SYS_VENDOR;
+				product = CONFIG_SYS_BOARD;
+				version = "Not Specified";
+				serial = "Not Specified";
+				wakeup-type = <SMBIOS_WAKEUP_TYPE_UNKNOWN>;
+				sku = "Not Specified";
+				family = "armv8";
+			};
+
+			baseboard {
+				manufacturer = CONFIG_SYS_VENDOR;
+				product = CONFIG_SYS_BOARD;
+				version = "Not Specified";
+				serial = "Not Specified";
+				asset-tag = "Not Specified";
+				chassis-location = "Not Specified";
+				feature-flags = <SMBIOS_BOARD_FEAT_HOST_BOARD>;
+				board-type = <SMBIOS_BOARD_TYPE_MOTHERBOARD>;
+			};
+
+			chassis {
+				manufacturer = CONFIG_SYS_VENDOR;
+				version = "Not Specified";
+				serial = "Not Specified";
+				asset-tag = "Not Specified";
+				chassis-type = <SMBIOS_ENCLOSURE_DESKTOP>;
+				bootup-state = <SMBIOS_STATE_SAFE>;
+				power-supply-state = <SMBIOS_STATE_SAFE>;
+				thermal-state = <SMBIOS_STATE_SAFE>;
+				security-status = <SMBIOS_SECURITY_NONE>;
+				oem-defined = <SMBIOS_ENCLOSURE_OEM_UND>;
+				height = <SMBIOS_ENCLOSURE_HEIGHT_UND>;
+				number-of-power-cords = <SMBIOS_POWCORD_NUM_UND>;
+			};
+
+			processor {
+				version = "Not Specified";
+				processor-type = <SMBIOS_PROCESSOR_TYPE_CENTRAL>;
+				processor-status = <SMBIOS_PROCESSOR_STATUS_ENABLED>;
+				upgrade = <SMBIOS_PROCESSOR_UPGRADE_NONE>;
+				family = <SMBIOS_PROCESSOR_FAMILY_EXT>;
+				family2 = <SMBIOS_PROCESSOR_FAMILY_ARMV8>;
+				socket-design = "Not Specified";
+				serial = "Not Specified";
+				asset-tag = "Not Specified";
+				part-number = "Not Specified";
+			};
+
+			cache {
+				l1-cache {
+					socket-design = "Not Specified";
+					config = <(SMBIOS_CACHE_LEVEL_1 |
+						   SMBIOS_CACHE_ENABLED |
+						   SMBIOS_CACHE_OP_WB)>;
+				};
+
+				l2-cache {
+					socket-design = "Not Specified";
+					config = <(SMBIOS_CACHE_LEVEL_2 |
+						   SMBIOS_CACHE_ENABLED |
+						   SMBIOS_CACHE_OP_WB)>;
+				};
+			};
+		};
+	};
+};
-- 
2.25.1