diff options
Diffstat (limited to 'src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h')
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h | 29 |
1 files changed, 21 insertions, 8 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 245d2cfd61..c602180592 100644 --- a/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h +++ b/src/soc/intel/cannonlake/include/soc/cnl_memcfg_init.h @@ -62,7 +62,7 @@ struct cnl_mb_cfg { * and let the meminit_lpddr4() routine take care of clearing the * unused fields for the caller. */ - const uint8_t dq_map[DDR_NUM_CHANNELS][3][DDR_NUM_PACKAGES]; + uint8_t dq_map[DDR_NUM_CHANNELS][3][DDR_NUM_PACKAGES]; /* * DQS CPU<>DRAM map Ch0 and Ch1. Each array entry represents a @@ -71,38 +71,51 @@ struct cnl_mb_cfg { * on the memory part, and the values in the array represent which * pin on the CPU that DRAM pin connects to. */ - const uint8_t dqs_map[DDR_NUM_CHANNELS][DQ_BITS_PER_DQS]; + uint8_t dqs_map[DDR_NUM_CHANNELS][DQ_BITS_PER_DQS]; /* * Rcomp resistor values. These values represent the resistance in * ohms of the three rcomp resistors attached to the DDR_COMP_0, * DDR_COMP_1, and DDR_COMP_2 pins on the DRAM. */ - const uint16_t rcomp_resistor[3]; + uint16_t rcomp_resistor[3]; /* * Rcomp target values. These will typically be the following * values for Cannon Lake : { 80, 40, 40, 40, 30 } */ - const uint16_t rcomp_targets[5]; + uint16_t rcomp_targets[5]; /* * Indicates whether memory is interleaved. * Set to 1 for an interleaved design, * set to 0 for non-interleaved design. */ - const uint8_t dq_pins_interleaved; + uint8_t dq_pins_interleaved; /* - * VREF_CA configuraation. + * VREF_CA configuration. * Set to 0 VREF_CA goes to both CH_A and CH_B, * set to 1 VREF_CA goes to CH_A and VREF_DQ_A goes to CH_B, * set to 2 VREF_CA goes to CH_A and VREF_DQ_B goes to CH_B. */ - const uint8_t vref_ca_config; + uint8_t vref_ca_config; /* Early Command Training Enabled */ - const uint8_t ect; + 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]; }; /* |