diff options
Diffstat (limited to 'hw/i386/fw_cfg.c')
| -rw-r--r-- | hw/i386/fw_cfg.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c index 380a819230..39b6bc6052 100644 --- a/hw/i386/fw_cfg.c +++ b/hw/i386/fw_cfg.c @@ -13,8 +13,15 @@ */ #include "qemu/osdep.h" +#include "sysemu/numa.h" +#include "hw/acpi/acpi.h" +#include "hw/firmware/smbios.h" +#include "hw/i386/pc.h" #include "hw/i386/fw_cfg.h" +#include "hw/timer/hpet.h" #include "hw/nvram/fw_cfg.h" +#include "e820_memory_layout.h" +#include "kvm_i386.h" const char *fw_cfg_arch_key_name(uint16_t key) { @@ -36,3 +43,133 @@ const char *fw_cfg_arch_key_name(uint16_t key) } return NULL; } + +void fw_cfg_build_smbios(MachineState *ms, FWCfgState *fw_cfg) +{ + uint8_t *smbios_tables, *smbios_anchor; + size_t smbios_tables_len, smbios_anchor_len; + struct smbios_phys_mem_area *mem_array; + unsigned i, array_count; + X86CPU *cpu = X86_CPU(ms->possible_cpus->cpus[0].cpu); + + /* tell smbios about cpuid version and features */ + smbios_set_cpuid(cpu->env.cpuid_version, cpu->env.features[FEAT_1_EDX]); + + smbios_tables = smbios_get_table_legacy(ms, &smbios_tables_len); + if (smbios_tables) { + fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES, + smbios_tables, smbios_tables_len); + } + + /* build the array of physical mem area from e820 table */ + mem_array = g_malloc0(sizeof(*mem_array) * e820_get_num_entries()); + for (i = 0, array_count = 0; i < e820_get_num_entries(); i++) { + uint64_t addr, len; + + if (e820_get_entry(i, E820_RAM, &addr, &len)) { + mem_array[array_count].address = addr; + mem_array[array_count].length = len; + array_count++; + } + } + smbios_get_tables(ms, mem_array, array_count, + &smbios_tables, &smbios_tables_len, + &smbios_anchor, &smbios_anchor_len); + g_free(mem_array); + + if (smbios_anchor) { + fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-tables", + smbios_tables, smbios_tables_len); + fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-anchor", + smbios_anchor, smbios_anchor_len); + } +} + +FWCfgState *fw_cfg_arch_create(MachineState *ms, + uint16_t boot_cpus, + uint16_t apic_id_limit) +{ + FWCfgState *fw_cfg; + uint64_t *numa_fw_cfg; + int i; + MachineClass *mc = MACHINE_GET_CLASS(ms); + const CPUArchIdList *cpus = mc->possible_cpu_arch_ids(ms); + int nb_numa_nodes = ms->numa_state->num_nodes; + + fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, + &address_space_memory); + fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, boot_cpus); + + /* FW_CFG_MAX_CPUS is a bit confusing/problematic on x86: + * + * For machine types prior to 1.8, SeaBIOS needs FW_CFG_MAX_CPUS for + * building MPTable, ACPI MADT, ACPI CPU hotplug and ACPI SRAT table, + * that tables are based on xAPIC ID and QEMU<->SeaBIOS interface + * for CPU hotplug also uses APIC ID and not "CPU index". + * This means that FW_CFG_MAX_CPUS is not the "maximum number of CPUs", + * but the "limit to the APIC ID values SeaBIOS may see". + * + * So for compatibility reasons with old BIOSes we are stuck with + * "etc/max-cpus" actually being apic_id_limit + */ + fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, apic_id_limit); + fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); + fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, + acpi_tables, acpi_tables_len); + fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override()); + + fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, + &e820_reserve, sizeof(e820_reserve)); + fw_cfg_add_file(fw_cfg, "etc/e820", e820_table, + sizeof(struct e820_entry) * e820_get_num_entries()); + + fw_cfg_add_bytes(fw_cfg, FW_CFG_HPET, &hpet_cfg, sizeof(hpet_cfg)); + /* allocate memory for the NUMA channel: one (64bit) word for the number + * of nodes, one word for each VCPU->node and one word for each node to + * hold the amount of memory. + */ + numa_fw_cfg = g_new0(uint64_t, 1 + apic_id_limit + nb_numa_nodes); + numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes); + for (i = 0; i < cpus->len; i++) { + unsigned int apic_id = cpus->cpus[i].arch_id; + assert(apic_id < apic_id_limit); + numa_fw_cfg[apic_id + 1] = cpu_to_le64(cpus->cpus[i].props.node_id); + } + for (i = 0; i < nb_numa_nodes; i++) { + numa_fw_cfg[apic_id_limit + 1 + i] = + cpu_to_le64(ms->numa_state->nodes[i].node_mem); + } + fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg, + (1 + apic_id_limit + nb_numa_nodes) * + sizeof(*numa_fw_cfg)); + + return fw_cfg; +} + +void fw_cfg_build_feature_control(MachineState *ms, FWCfgState *fw_cfg) +{ + X86CPU *cpu = X86_CPU(ms->possible_cpus->cpus[0].cpu); + CPUX86State *env = &cpu->env; + uint32_t unused, ecx, edx; + uint64_t feature_control_bits = 0; + uint64_t *val; + + cpu_x86_cpuid(env, 1, 0, &unused, &unused, &ecx, &edx); + if (ecx & CPUID_EXT_VMX) { + feature_control_bits |= FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX; + } + + if ((edx & (CPUID_EXT2_MCE | CPUID_EXT2_MCA)) == + (CPUID_EXT2_MCE | CPUID_EXT2_MCA) && + (env->mcg_cap & MCG_LMCE_P)) { + feature_control_bits |= FEATURE_CONTROL_LMCE; + } + + if (!feature_control_bits) { + return; + } + + val = g_malloc(sizeof(*val)); + *val = cpu_to_le64(feature_control_bits | FEATURE_CONTROL_LOCKED); + fw_cfg_add_file(fw_cfg, "etc/msr_feature_control", val, sizeof(*val)); +} |