smbios: provide type 4 RISC-V SMBIOS Processor ID
For RISC-V CPUs the SMBIOS Processor ID field contains
the Machine Vendor ID from CSR mvendorid.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/drivers/cpu/riscv_cpu.c b/drivers/cpu/riscv_cpu.c
index a9b2537..5d1026b 100644
--- a/drivers/cpu/riscv_cpu.c
+++ b/drivers/cpu/riscv_cpu.c
@@ -11,6 +11,7 @@
#include <errno.h>
#include <log.h>
#include <asm/global_data.h>
+#include <asm/sbi.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <linux/bitops.h>
@@ -94,13 +95,24 @@
struct cpu_plat *plat = dev_get_parent_plat(dev);
struct driver *drv;
int ret;
+ long mvendorid;
/* save the hart id */
plat->cpu_id = dev_read_addr(dev);
+ /* provide data for SMBIOS */
if (IS_ENABLED(CONFIG_64BIT))
plat->family = 0x201;
else
plat->family = 0x200;
+ if (CONFIG_IS_ENABLED(RISCV_SMODE)) {
+ /*
+ * For RISC-V CPUs the SMBIOS Processor ID field contains
+ * the Machine Vendor ID from CSR mvendorid.
+ */
+ ret = sbi_get_mvendorid(&mvendorid);
+ if (!ret)
+ plat->id[0] = mvendorid;
+ }
/* 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 */