From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Thu, 28 Dec 2023 07:30:24 +0000 (+0100)
Subject: cpu: riscv: set correct SMBIOS processor family value
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=1b6228f28d9336620fb508ed198ad8be1eb7aa9c;p=u-boot.git

cpu: riscv: set correct SMBIOS processor family value

The SMBIOS specification requires to set the processor family in the type 4
(Processor Information) table to specific values depending only on the
bitness of the system (0x200 for RV32 and 0x201 for RV64).

With this patch dmidecode shows

    Handle 0x0004, DMI type 4, 48 bytes
    Processor Information
	Socket Designation: Not Specified
	Type: Central Processor
	Family: RV64

for qemu-riscv64_smode_defconfig.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---

diff --git a/drivers/cpu/riscv_cpu.c b/drivers/cpu/riscv_cpu.c
index d6484d7f4b..034b9b49c0 100644
--- a/drivers/cpu/riscv_cpu.c
+++ b/drivers/cpu/riscv_cpu.c
@@ -98,6 +98,10 @@ static int riscv_cpu_bind(struct udevice *dev)
 
 	/* save the hart id */
 	plat->cpu_id = dev_read_addr(dev);
+	if (IS_ENABLED(CONFIG_64BIT))
+		plat->family = 0x201;
+	else
+		plat->family = 0x200;
 	/* first examine the property in current cpu node */
 	ret = dev_read_u32(dev, "timebase-frequency", &plat->timebase_freq);
 	/* if not found, then look at the parent /cpus node */