diff options
Diffstat (limited to 'src/soc/intel/common/block/systemagent/systemagent.c')
| -rw-r--r-- | src/soc/intel/common/block/systemagent/systemagent.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c index 269236ba32..d25e1aa46c 100644 --- a/src/soc/intel/common/block/systemagent/systemagent.c +++ b/src/soc/intel/common/block/systemagent/systemagent.c @@ -41,6 +41,11 @@ __weak unsigned long sa_write_acpi_tables(const struct device *dev, return current; } +__weak uint32_t soc_systemagent_max_chan_capacity_mib(u8 capid0_a_ddrsz) +{ + return 32768; /* 32 GiB per channel */ +} + /* * Add all known fixed MMIO ranges that hang off the host bridge/memory * controller device. @@ -258,11 +263,27 @@ static void systemagent_read_resources(struct device *dev) } #if CONFIG(GENERATE_SMBIOS_TABLES) +static bool sa_supports_ecc(const uint32_t capida) +{ + return !(capida & CAPID_ECCDIS); +} + +static size_t sa_slots_per_channel(const uint32_t capida) +{ + return !(capida & CAPID_DDPCD) + 1; +} + +static size_t sa_number_of_channels(const uint32_t capida) +{ + return !(capida & CAPID_PDCD) + 1; +} + static int sa_smbios_write_type_16(struct device *dev, int *handle, unsigned long *current) { struct smbios_type16 *t = (struct smbios_type16 *)*current; int len = sizeof(struct smbios_type16); + const uint32_t capida = pci_read_config32(dev, CAPID0_A); struct memory_info *meminfo; meminfo = cbmem_find(CBMEM_ID_MEMINFO); @@ -275,12 +296,14 @@ static int sa_smbios_write_type_16(struct device *dev, int *handle, t->length = len - 2; t->location = MEMORY_ARRAY_LOCATION_SYSTEM_BOARD; t->use = MEMORY_ARRAY_USE_SYSTEM; - /* TBD, meminfo hob have information about ECC */ - t->memory_error_correction = MEMORY_ARRAY_ECC_NONE; + t->memory_error_correction = sa_supports_ecc(capida) ? MEMORY_ARRAY_ECC_SINGLE_BIT : + MEMORY_ARRAY_ECC_NONE; /* no error information handle available */ t->memory_error_information_handle = 0xFFFE; - t->maximum_capacity = 32 * (GiB / KiB); /* 32GB as default */ - t->number_of_memory_devices = meminfo->dimm_cnt; + t->maximum_capacity = soc_systemagent_max_chan_capacity_mib(CAPID_DDRSZ(capida)) * + sa_number_of_channels(capida) * (MiB / KiB); + t->number_of_memory_devices = sa_slots_per_channel(capida) * + sa_number_of_channels(capida); *current += len; *handle += 1; |