diff options
| -rw-r--r-- | src/soc/intel/tigerlake/include/soc/meminit.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/include/soc/meminit.h b/src/soc/intel/tigerlake/include/soc/meminit.h index aab155e43c..a2fb3f4334 100644 --- a/src/soc/intel/tigerlake/include/soc/meminit.h +++ b/src/soc/intel/tigerlake/include/soc/meminit.h @@ -17,8 +17,13 @@ #define LPDDR4X_CHANNELS 8 #define LPDDR4X_BYTES_PER_CHANNEL 2 +#define DDR4_CHANNELS 2 +#define DDR4_BYTES_PER_CHANNEL 8 + enum mem_topology { MEMORY_DOWN, /* Supports reading SPD from CBFS or in-memory pointer. */ + SODIMM, /* Supports reading SPD using SMBus (only for DDR4). */ + MIXED, /* CH0 = MD, CH1 = SODIMM (only for DDR4). */ }; enum md_spd_loc { @@ -43,6 +48,17 @@ struct spd_info { size_t data_len; }; }; + + /* + * SPD info for SODIMM topology. + * Leave addr_dimmN as 0 for any DIMMs that are not populated. + */ + struct { + /* SMBus address for DIMM0 within the channel. */ + uint8_t addr_dimm0; + /* SMBus address for DIMM1 within the channel. */ + uint8_t addr_dimm1; + } smbus_info[DDR4_CHANNELS]; }; /* Board-specific memory configuration information */ |