On Fri, Jan 5, 2024 at 3:44 PM Heinrich Schuchardt <heinrich.schucha...@canonical.com> wrote: > > On 1/5/24 06:24, Alistair Francis wrote: > > On Fri, Dec 29, 2023 at 10:48 PM Heinrich Schuchardt > > <heinrich.schucha...@canonical.com> wrote: > >> > >> For RISC-V the SMBIOS standard requires specific values of the processor > >> family value depending on the bitness of the CPU. > > > > Can you provide some details of where this is described? I can't seem to > > find it > > > > Alistair > > System Management BIOS (SMBIOS) Reference Specification 3.7.0 (DSP0134) > https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.7.0.pdf > 7.5.2 Processor Information — Processor Family > Table 23 – Processor Information: Processor Family field > > 200h 512 RISC-V RV32 > 201h 513 RISC-V RV64 > 202h 514 RISC-V RV128 > > While for other architectures values for different CPU generations have > been defined the values for RISC-V only depend on the bitness.
Ah, I first read the commit message as saying this is RISC-V specific, which I couldn't find in the spec. I now realise you just mean it's important for RISC-V Alistair > > Best regards > > Heinrich > > > > >> > >> Add a processor-family option for SMBIOS table 4. > >> > >> The value of processor-family may exceed 255 and therefore must be provided > >> in the Processor Family 2 field. Set the Processor Family field to 0xFE > >> which signals that the Processor Family 2 is used. > >> > >> Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com> > >> --- > >> v2: > >> new patch > >> --- > >> hw/smbios/smbios.c | 13 +++++++++++-- > >> qemu-options.hx | 4 ++-- > >> 2 files changed, 13 insertions(+), 4 deletions(-) > >> > >> diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c > >> index 2a90601ac5..647bc6d603 100644 > >> --- a/hw/smbios/smbios.c > >> +++ b/hw/smbios/smbios.c > >> @@ -102,6 +102,7 @@ static struct { > >> #define DEFAULT_CPU_SPEED 2000 > >> > >> static struct { > >> + uint16_t processor_family; > >> const char *sock_pfx, *manufacturer, *version, *serial, *asset, > >> *part; > >> uint64_t max_speed; > >> uint64_t current_speed; > >> @@ -110,6 +111,7 @@ static struct { > >> .max_speed = DEFAULT_CPU_SPEED, > >> .current_speed = DEFAULT_CPU_SPEED, > >> .processor_id = 0, > >> + .processor_family = 0x01, /* Other */ > >> }; > >> > >> struct type8_instance { > >> @@ -337,6 +339,10 @@ static const QemuOptDesc qemu_smbios_type4_opts[] = { > >> .name = "part", > >> .type = QEMU_OPT_STRING, > >> .help = "part number", > >> + }, { > >> + .name = "processor-family", > >> + .type = QEMU_OPT_NUMBER, > >> + .help = "processor family", > >> }, { > >> .name = "processor-id", > >> .type = QEMU_OPT_NUMBER, > >> @@ -726,7 +732,7 @@ static void smbios_build_type_4_table(MachineState > >> *ms, unsigned instance) > >> snprintf(sock_str, sizeof(sock_str), "%s%2x", type4.sock_pfx, > >> instance); > >> SMBIOS_TABLE_SET_STR(4, socket_designation_str, sock_str); > >> t->processor_type = 0x03; /* CPU */ > >> - t->processor_family = 0x01; /* Other */ > >> + t->processor_family = 0xfe; /* use Processor Family 2 field */ > >> SMBIOS_TABLE_SET_STR(4, processor_manufacturer_str, > >> type4.manufacturer); > >> if (type4.processor_id == 0) { > >> t->processor_id[0] = cpu_to_le32(smbios_cpuid_version); > >> @@ -758,7 +764,7 @@ static void smbios_build_type_4_table(MachineState > >> *ms, unsigned instance) > >> t->thread_count = (threads_per_socket > 255) ? 0xFF : > >> threads_per_socket; > >> > >> t->processor_characteristics = cpu_to_le16(0x02); /* Unknown */ > >> - t->processor_family2 = cpu_to_le16(0x01); /* Other */ > >> + t->processor_family2 = cpu_to_le16(type4.processor_family); > >> > >> if (tbl_len == SMBIOS_TYPE_4_LEN_V30) { > >> t->core_count2 = t->core_enabled2 = > >> cpu_to_le16(cores_per_socket); > >> @@ -1402,6 +1408,9 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) > >> return; > >> } > >> save_opt(&type4.sock_pfx, opts, "sock_pfx"); > >> + type4.processor_family = qemu_opt_get_number(opts, > >> + > >> "processor-family", > >> + 0x01 /* Other > >> */); > >> save_opt(&type4.manufacturer, opts, "manufacturer"); > >> save_opt(&type4.version, opts, "version"); > >> save_opt(&type4.serial, opts, "serial"); > >> diff --git a/qemu-options.hx b/qemu-options.hx > >> index b66570ae00..7bdb414345 100644 > >> --- a/qemu-options.hx > >> +++ b/qemu-options.hx > >> @@ -2694,7 +2694,7 @@ DEF("smbios", HAS_ARG, QEMU_OPTION_smbios, > >> " specify SMBIOS type 3 fields\n" > >> "-smbios > >> type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str]\n" > >> " > >> [,asset=str][,part=str][,max-speed=%d][,current-speed=%d]\n" > >> - " [,processor-id=%d]\n" > >> + " [,processor-family=%d,processor-id=%d]\n" > >> " specify SMBIOS type 4 fields\n" > >> "-smbios > >> type=8[,external_reference=str][,internal_reference=str][,connector_type=%d][,port_type=%d]\n" > >> " specify SMBIOS type 8 fields\n" > >> @@ -2722,7 +2722,7 @@ SRST > >> ``-smbios > >> type=3[,manufacturer=str][,version=str][,serial=str][,asset=str][,sku=str]`` > >> Specify SMBIOS type 3 fields > >> > >> -``-smbios > >> type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str][,asset=str][,part=str][,processor-id=%d]`` > >> +``-smbios > >> type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str][,asset=str][,part=str][,processor-family=%d][,processor-id=%d]`` > >> Specify SMBIOS type 4 fields > >> > >> ``-smbios type=11[,value=str][,path=filename]`` > >> -- > >> 2.43.0 > >> > >> >