| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/cache.h> |
| #include <arch/lib_helpers.h> |
| #include <arch/smc.h> |
| #include <console/console.h> |
| #include <smbios.h> |
| #include <stdio.h> |
| |
| static void smbios_processor_id(u32 *processor_id) |
| { |
| uint32_t jep106code, soc_revision; |
| uint64_t midr_el1; |
| |
| if (smccc_supports_arch_soc_id()) { |
| smccc_arch_soc_id(&jep106code, &soc_revision); |
| processor_id[0] = jep106code; |
| processor_id[1] = soc_revision; |
| } else { |
| midr_el1 = raw_read_midr_el1(); |
| processor_id[0] = midr_el1; |
| processor_id[1] = 0; |
| } |
| } |
| |
| static int smbios_processor_manufacturer(u8 *start) |
| { |
| char midr_el1_implementer; |
| char buf[32]; |
| |
| // [31:24] - Implementer code |
| midr_el1_implementer = (raw_read_midr_el1() & 0xff000000) >> 24; |
| |
| snprintf(buf, sizeof(buf), "CPU implementer %x", midr_el1_implementer); |
| return smbios_add_string(start, buf); |
| } |
| |
| static int smbios_processor_name(u8 *start) |
| { |
| uint16_t midr_el1_partnumber; |
| char buf[32]; |
| |
| // [15:4] - PartNum |
| midr_el1_partnumber = (raw_read_midr_el1() & 0xfff0) >> 4; |
| |
| snprintf(buf, sizeof(buf), "ARMv8 Processor rev %d", midr_el1_partnumber); |
| return smbios_add_string(start, buf); |
| } |
| |
| #define MAX_CPUS_ENABLED(cpus) (cpus > 0xff ? 0xff : cpus) |
| |
| /* NOTE: Not handling big.LITTLE clusters. Consider using MP services (not yet) or the DSU. */ |
| int smbios_write_type4(unsigned long *current, int handle) |
| { |
| static unsigned int cnt = 0; |
| char buf[8]; |
| uint16_t characteristics = 0; |
| unsigned int cpu_voltage; |
| |
| struct smbios_type4 *t = smbios_carve_table(*current, SMBIOS_PROCESSOR_INFORMATION, |
| sizeof(*t), handle); |
| |
| snprintf(buf, sizeof(buf), "CPU%d", cnt++); |
| t->socket_designation = smbios_add_string(t->eos, buf); |
| |
| smbios_processor_id(t->processor_id); |
| t->processor_manufacturer = smbios_processor_manufacturer(t->eos); |
| t->processor_version = smbios_processor_name(t->eos); |
| t->processor_family = SMBIOS_PROCESSOR_FAMILY_FROM_FAMILY2; |
| t->processor_family2 = SMBIOS_PROCESSOR_FAMILY2_ARMV8; |
| t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL; |
| |
| smbios_cpu_get_core_counts(&t->core_count2, &t->thread_count2); |
| t->core_count = MAX_CPUS_ENABLED(t->core_count2); |
| t->thread_count = MAX_CPUS_ENABLED(t->thread_count2); |
| /* Assume we always enable all cores */ |
| t->core_enabled = t->core_count; |
| t->core_enabled2 = t->core_count2; |
| t->l1_cache_handle = 0xffff; |
| t->l2_cache_handle = 0xffff; |
| t->l3_cache_handle = 0xffff; |
| t->serial_number = smbios_add_string(t->eos, smbios_processor_serial_number()); |
| t->status = SMBIOS_PROCESSOR_STATUS_CPU_ENABLED | SMBIOS_PROCESSOR_STATUS_POPULATED; |
| t->processor_upgrade = PROCESSOR_UPGRADE_UNKNOWN; |
| |
| t->external_clock = smbios_processor_external_clock(); |
| if (t->external_clock == 0) |
| t->external_clock = (raw_read_cntfrq_el0() / 1000 / 1000); |
| |
| t->current_speed = smbios_cpu_get_current_speed_mhz(); |
| |
| /* This field identifies a capability for the system, not the processor itself. */ |
| t->max_speed = smbios_cpu_get_max_speed_mhz(); |
| |
| /* TODO: Are "Enhanced Virtualization" (by EL2) and "Power/Performance Control" supported? */ |
| characteristics |= PROCESSOR_64BIT_CAPABLE; |
| characteristics |= BIT(5); /* Execute Protection */ |
| |
| if (t->core_count > 1) |
| characteristics |= PROCESSOR_MULTI_CORE; |
| if (t->thread_count > 1) |
| characteristics |= BIT(4); /* BIT4: Hardware Thread */ |
| if (smccc_supports_arch_soc_id()) |
| characteristics |= BIT(9); /* Arm64 SoC ID */ |
| |
| t->processor_characteristics = characteristics | smbios_processor_characteristics(); |
| |
| cpu_voltage = smbios_cpu_get_voltage(); |
| if (cpu_voltage > 0) |
| t->voltage = 0x80 | cpu_voltage; |
| |
| const int len = smbios_full_table_len(&t->header, t->eos); |
| *current += len; |
| return len; |
| } |
| |
| int smbios_write_type7_cache_parameters(unsigned long *current, |
| int *handle, |
| int *max_struct_size, |
| struct smbios_type4 *type4) |
| { |
| enum cache_level level = CACHE_L1; |
| int h; |
| int len = 0; |
| |
| while (1) { |
| enum smbios_cache_type type; |
| struct cache_info info; |
| |
| const u8 cache_type = cpu_get_cache_type(level); |
| /* No more caches in the system */ |
| if (!cache_type) |
| break; |
| |
| switch (cache_type) { |
| case CACHE_INSTRUCTION: |
| type = SMBIOS_CACHE_TYPE_INSTRUCTION; |
| cpu_get_cache_info(level, cache_type, &info); |
| break; |
| case CACHE_DATA: |
| type = SMBIOS_CACHE_TYPE_DATA; |
| cpu_get_cache_info(level, cache_type, &info); |
| break; |
| case CACHE_SEPARATE: |
| type = SMBIOS_CACHE_TYPE_DATA; |
| cpu_get_cache_info(level, CACHE_DATA, &info); |
| h = (*handle)++; |
| update_max(len, *max_struct_size, smbios_write_type7(current, h, |
| level, smbios_cache_sram_type(), smbios_cache_associativity(info.associativity), |
| type, info.size, info.size)); |
| |
| type = SMBIOS_CACHE_TYPE_INSTRUCTION; |
| cpu_get_cache_info(level, CACHE_INSTRUCTION, &info); |
| break; |
| case CACHE_UNIFIED: |
| type = SMBIOS_CACHE_TYPE_UNIFIED; |
| cpu_get_cache_info(level, cache_type, &info); |
| break; |
| default: |
| type = SMBIOS_CACHE_TYPE_UNKNOWN; |
| info.size = info.associativity = 0; |
| break; |
| } |
| |
| h = (*handle)++; |
| update_max(len, *max_struct_size, smbios_write_type7(current, h, |
| level, smbios_cache_sram_type(), smbios_cache_associativity(info.associativity), |
| type, info.size, info.size)); |
| |
| if (type4) { |
| switch (level) { |
| case 1: |
| type4->l1_cache_handle = h; |
| break; |
| case 2: |
| type4->l2_cache_handle = h; |
| break; |
| case 3: |
| type4->l3_cache_handle = h; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| level++; |
| } |
| |
| return len; |
| } |