diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/smbios.c | 57 |
1 files changed, 51 insertions, 6 deletions
diff --git a/src/arch/x86/smbios.c b/src/arch/x86/smbios.c index 2995eceb9d..19b6f5d989 100644 --- a/src/arch/x86/smbios.c +++ b/src/arch/x86/smbios.c @@ -478,6 +478,51 @@ unsigned int __weak smbios_processor_family(struct cpuid_result res) return (res.eax > 0) ? 0x0c : 0x6; } +unsigned int __weak smbios_cache_error_correction_type(u8 level) +{ + return SMBIOS_CACHE_ERROR_CORRECTION_UNKNOWN; +} + +unsigned int __weak smbios_cache_sram_type(void) +{ + return SMBIOS_CACHE_SRAM_TYPE_UNKNOWN; +} + +unsigned int __weak smbios_cache_conf_operation_mode(u8 level) +{ + return SMBIOS_CACHE_OP_MODE_UNKNOWN; /* Unknown */ +} + +static size_t get_number_of_caches(struct cpuid_result res_deterministic_cache) +{ + size_t max_logical_cpus_sharing_cache = 0; + size_t number_of_cpus_per_package = 0; + size_t max_logical_cpus_per_package = 0; + struct cpuid_result res; + + if (!cpu_have_cpuid()) + return 1; + + res = cpuid(1); + + max_logical_cpus_per_package = (res.ebx >> 16) & 0xff; + + max_logical_cpus_sharing_cache = ((res_deterministic_cache.eax >> 14) & 0xfff) + 1; + + /* Check if it's last level cache */ + if (max_logical_cpus_sharing_cache == max_logical_cpus_per_package) + return 1; + + if (cpuid_get_max_func() >= 0xb) { + res = cpuid_ext(0xb, 1); + number_of_cpus_per_package = res.ebx & 0xff; + } else { + number_of_cpus_per_package = max_logical_cpus_per_package; + } + + return number_of_cpus_per_package / max_logical_cpus_sharing_cache; +} + static int smbios_write_type1(unsigned long *current, int handle) { struct smbios_type1 *t = (struct smbios_type1 *)*current; @@ -662,7 +707,6 @@ static int smbios_write_type7(unsigned long *current, { struct smbios_type7 *t = (struct smbios_type7 *)*current; int len = sizeof(struct smbios_type7); - static unsigned int cnt = 0; char buf[8]; memset(t, 0, sizeof(struct smbios_type7)); @@ -670,13 +714,13 @@ static int smbios_write_type7(unsigned long *current, t->handle = handle; t->length = len - 2; - snprintf(buf, sizeof(buf), "CACHE%x", cnt++); + snprintf(buf, sizeof(buf), "CACHE%x", level); t->socket_designation = smbios_add_string(t->eos, buf); t->cache_configuration = SMBIOS_CACHE_CONF_LEVEL(level) | SMBIOS_CACHE_CONF_LOCATION(0) | /* Internal */ SMBIOS_CACHE_CONF_ENABLED(1) | /* Enabled */ - SMBIOS_CACHE_CONF_OPERATION_MODE(3); /* Unknown */ + SMBIOS_CACHE_CONF_OPERATION_MODE(smbios_cache_conf_operation_mode(level)); if (max_cache_size < (SMBIOS_CACHE_SIZE_MASK * KiB)) { t->max_cache_size = max_cache_size / KiB; @@ -716,7 +760,7 @@ static int smbios_write_type7(unsigned long *current, t->supported_sram_type = sram_type; t->current_sram_type = sram_type; t->cache_speed = 0; /* Unknown */ - t->error_correction_type = SMBIOS_CACHE_ERROR_CORRECTION_UNKNOWN; + t->error_correction_type = smbios_cache_error_correction_type(level); t->system_cache_type = type; len = t->length + smbios_string_table_len(t->eos); @@ -811,7 +855,8 @@ static int smbios_write_type7_cache_parameters(unsigned long *current, const size_t partitions = CPUID_CACHE_PHYS_LINE(res) + 1; const size_t cache_line_size = CPUID_CACHE_COHER_LINE(res) + 1; const size_t number_of_sets = CPUID_CACHE_NO_OF_SETS(res) + 1; - const size_t cache_size = assoc * partitions * cache_line_size * number_of_sets; + const size_t cache_size = assoc * partitions * cache_line_size * number_of_sets + * get_number_of_caches(res); if (!cache_type) /* No more caches in the system */ @@ -840,7 +885,7 @@ static int smbios_write_type7_cache_parameters(unsigned long *current, const int h = (*handle)++; update_max(len, *max_struct_size, smbios_write_type7(current, h, - level, SMBIOS_CACHE_SRAM_TYPE_UNKNOWN, associativity, + level, smbios_cache_sram_type(), associativity, type, cache_size, cache_size)); if (type4) { |