/*
- * Copyright 2008-2009 Freescale Semiconductor, Inc.
+ * Copyright 2008-2012 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@freescale.com>
*
* calculate the organization and timing parameter
bsize = 1ULL << (nbit_sdram_cap_bsize - 3
+ nbit_primary_bus_width - nbit_sdram_width);
- debug("DDR: DDR III rank density = 0x%16lx\n", bsize);
+ debug("DDR: DDR III rank density = 0x%16llx\n", bsize);
return bsize;
}
{
unsigned int retval;
unsigned int mtb_ps;
+ int ftb_10th_ps;
int i;
if (spd->mem_type) {
* and copying the part name in ASCII from the SPD onto it
*/
memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
- memcpy(pdimm->mpart, spd->mpart, sizeof(pdimm->mpart) - 1);
+ if ((spd->info_size_crc & 0xF) > 1)
+ memcpy(pdimm->mpart, spd->mpart, sizeof(pdimm->mpart) - 1);
/* DIMM organization parameters */
pdimm->n_ranks = ((spd->organization >> 3) & 0x7) + 1;
switch (spd->module_type & DDR3_SPD_MODULETYPE_MASK) {
case DDR3_SPD_MODULETYPE_RDIMM:
case DDR3_SPD_MODULETYPE_MINI_RDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_RDIMM:
/* Registered/buffered DIMMs */
pdimm->registered_dimm = 1;
for (i = 0; i < 16; i += 2) {
case DDR3_SPD_MODULETYPE_SO_DIMM:
case DDR3_SPD_MODULETYPE_MICRO_DIMM:
case DDR3_SPD_MODULETYPE_MINI_UDIMM:
+ case DDR3_SPD_MODULETYPE_MINI_CDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_UDIMM:
+ case DDR3_SPD_MODULETYPE_72B_SO_CDIMM:
+ case DDR3_SPD_MODULETYPE_LRDIMM:
+ case DDR3_SPD_MODULETYPE_16B_SO_DIMM:
+ case DDR3_SPD_MODULETYPE_32B_SO_DIMM:
/* Unbuffered DIMMs */
if (spd->mod_section.unbuffered.addr_mapping & 0x1)
pdimm->mirrored_dimm = 1;
mtb_ps = (spd->mtb_dividend * 1000) /spd->mtb_divisor;
pdimm->mtb_ps = mtb_ps;
+ /*
+ * FTB - fine timebase
+ * use 1/10th of ps as our unit to avoid floating point
+ * eg, 10 for 1ps, 25 for 2.5ps, 50 for 5ps
+ */
+ ftb_10th_ps =
+ ((spd->ftb_div & 0xf0) >> 4) * 10 / (spd->ftb_div & 0x0f);
+ pdimm->ftb_10th_ps = ftb_10th_ps;
/*
* sdram minimum cycle time
* we assume the MTB is 0.125ns
* =12 MTB (1.5ns) ->DDR3-1333
* =10 MTB (1.25ns) ->DDR3-1600
*/
- pdimm->tCKmin_X_ps = spd->tCK_min * mtb_ps;
+ pdimm->tCKmin_X_ps = spd->tCK_min * mtb_ps +
+ (spd->fine_tCK_min * ftb_10th_ps) / 10;
/*
* CAS latency supported
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25ns)
*/
- pdimm->tAA_ps = spd->tAA_min * mtb_ps;
+ pdimm->tAA_ps = spd->tAA_min * mtb_ps +
+ (spd->fine_tAA_min * ftb_10th_ps) / 10;
/*
* min write recovery time
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25)
*/
- pdimm->tRCD_ps = spd->tRCD_min * mtb_ps;
+ pdimm->tRCD_ps = spd->tRCD_min * mtb_ps +
+ (spd->fine_tRCD_min * ftb_10th_ps) / 10;
/*
* min row active to row active delay time
* DDR3-1333H 108 MTB (13.5ns)
* DDR3-1600H 90 MTB (11.25ns)
*/
- pdimm->tRP_ps = spd->tRP_min * mtb_ps;
+ pdimm->tRP_ps = spd->tRP_min * mtb_ps +
+ (spd->fine_tRP_min * ftb_10th_ps) / 10;
/* min active to precharge delay time
* eg: tRAS_min =
* DDR3-1600H 370 MTB (46.25ns)
*/
pdimm->tRC_ps = (((spd->tRAS_tRC_ext & 0xf0) << 4) | spd->tRC_min_lsb)
- * mtb_ps;
+ * mtb_ps + (spd->fine_tRC_min * ftb_10th_ps) / 10;
/*
* min refresh recovery delay time
* eg: tRFC_min =