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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2024-01-29 12:46:05 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2024-02-02 19:57:16 +0100 |
| commit | 545e0e42b966751da48117820891356ccf47baf1 (patch) | |
| tree | eed824e83b68c5f4cd5a140a8234875be072756a /drivers/cpu | |
| parent | 6ebf9136ec24c03f6ebeb6ec6d684ce55c2a4320 (diff) | |
| download | u-boot-545e0e42b966751da48117820891356ccf47baf1.tar.gz u-boot-545e0e42b966751da48117820891356ccf47baf1.tar.bz2 u-boot-545e0e42b966751da48117820891356ccf47baf1.zip | |
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>
Diffstat (limited to 'drivers/cpu')
| -rw-r--r-- | drivers/cpu/riscv_cpu.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/cpu/riscv_cpu.c b/drivers/cpu/riscv_cpu.c index a9b253719f..5d1026b37d 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 @@ static int riscv_cpu_bind(struct udevice *dev) 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 */ |