diff options
Diffstat (limited to 'src/soc/intel/cannonlake/include')
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h b/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h index e602a33f78..d5f6c39f24 100644 --- a/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h +++ b/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h @@ -23,6 +23,9 @@ /* Number of dq bits controlled per dqs */ #define DQ_BITS_PER_DQS 8 +/* Number of memory DIMM slots available on Cannonlake board */ +#define NUM_DIMM_SLOT 4 + /* * Number of memory packages, where a "package" represents a 64-bit solution. */ @@ -40,17 +43,32 @@ struct spd_by_pointer { uintptr_t spd_data_ptr; }; +enum mem_info_read_type { + NOT_EXISTING, /* No memory in this slot */ + READ_SMBUS, /* Read on-module spd by SMBUS. */ + READ_SPD_CBFS, /* Find spd file in CBFS. */ + READ_SPD_MEMPTR /* Find spd data from pointer. */ +}; + struct spd_info { - bool spd_by_index; + enum mem_info_read_type read_type; union spd_data_by { + /* To read on-module spd when read_type is READ_SMBUS. */ + uint8_t spd_smbus_address; + + /* To identify spd file when read_type is READ_SPD_CBFS. */ int spd_index; + + /* To find spd data when read_type is READ_SPD_MEMPTR. */ struct spd_by_pointer spd_data_ptr_info; } spd_spec; - uint8_t spd_smbus_address[4]; }; /* Board-specific memory dq mapping information */ struct cnl_mb_cfg { + /* Parameters required to access SPD for CH0D0/CH0D1/CH1D0/CH1D1. */ + struct spd_info spd[NUM_DIMM_SLOT]; + /* * For each channel, there are 6 sets of DQ byte mappings, * where each set has a package 0 and a package 1 value (package 0 @@ -107,26 +125,12 @@ struct cnl_mb_cfg { /* Early Command Training Enabled */ uint8_t ect; - - /* - * Flags to indicate which channels are populated. We - * currently support single or dual channel configurations. - * Set 1 to indicate that the channel is not populated Set 0 - * to indicate that the channel is populated. For example, - * dual channel memory configuration would have both - * channel_empty[0] = 0 and channel_empty[1] = 0. Note that - * this flag is only used for soldered down DRAM where we get - * SPD data from CBFS. We need the value 0 to default to - * populated in order to support existing boards. - */ - uint8_t channel_empty[2]; }; /* * Initialize default memory configurations for CannonLake. */ void cannonlake_memcfg_init(FSP_M_CONFIG *mem_cfg, - const struct cnl_mb_cfg *cnl_cfg, - const struct spd_info *spd); + const struct cnl_mb_cfg *cnl_cfg); #endif /* _SOC_CANNONLAKE_MEMCFG_INIT_H_ */ |