diff options
Diffstat (limited to 'src/mainboard/purism/librem_cnl/romstage.c')
-rw-r--r-- | src/mainboard/purism/librem_cnl/romstage.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/mainboard/purism/librem_cnl/romstage.c b/src/mainboard/purism/librem_cnl/romstage.c new file mode 100644 index 0000000000..3a3ca6b491 --- /dev/null +++ b/src/mainboard/purism/librem_cnl/romstage.c @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <soc/cnl_memcfg_init.h> +#include <soc/romstage.h> + +static const struct cnl_mb_cfg memcfg = { + + /* Parameters required to access SPD for CH0D0/CH0D1/CH1D0/CH1D1. */ + .spd[0] = { + .read_type = READ_SMBUS, + .spd_spec = {.spd_smbus_address = 0xa0}, + }, + .spd[1] = {.read_type = NOT_EXISTING}, + .spd[2] = { + .read_type = READ_SMBUS, + .spd_spec = {.spd_smbus_address = 0xa4}, + }, + .spd[3] = {.read_type = NOT_EXISTING}, + + /* + * 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. + */ + .rcomp_resistor = { 121, 81, 100 }, + + /* Rcomp target values */ + .rcomp_targets = { 100, 40, 20, 20, 26 }, + + /* + * Indicates whether memory is interleaved. + * Set to 1 for an interleaved design, + * set to 0 for non-interleaved design. + */ + .dq_pins_interleaved = 1, + + /* + * 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. + */ + .vref_ca_config = 2, + + /* Early Command Training */ + .ect = 0, +}; + +void mainboard_memory_init_params(FSPM_UPD *memupd) +{ + FSP_M_CONFIG *mem_cfg = &memupd->FspmConfig; + cannonlake_memcfg_init(mem_cfg, &memcfg); + + /* Enable and set SATA HSIO adjustments for ports 0 and 2 */ + mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[0] = 1; + mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[2] = 1; + mem_cfg->PchSataHsioRxGen3EqBoostMag[0] = 2; + mem_cfg->PchSataHsioRxGen3EqBoostMag[2] = 1; +} |