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authorMorgan Jang <Morgan_Jang@wiwynn.com>2020-10-06 16:26:17 +0800
committerPatrick Georgi <pgeorgi@google.com>2020-10-26 06:54:04 +0000
commit8ae391d199016a83f11db8724bb8e780441afa3b (patch)
treea867659a30318fd88ca835f9c7ecba70063cbebe /src/arch
parent8ccc8fdf26a9172ef8023e91630bdf88239170c7 (diff)
arch/x86/smbios: Populate SMBIOS type 7 with cache information
SMBIOS has a field to display the cache size, which is currently set to UNKNOWN unconditionally, multiply the cache size of L1 and L2 by the number of cores. TEST=Execute "dmidecode -t 7" to check if the cache information is correct for Deltalake platform Change-Id: Ieeb5d3346454ffb2291613dc2aa24b31d10c2e04 Signed-off-by: Morgan Jang <Morgan_Jang@wiwynn.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46068 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Jonathan Zhang <jonzhang@fb.com> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/arch')
-rw-r--r--src/arch/x86/smbios.c57
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) {