#ifndef DDR2_DIMM_PARAMS_H
#define DDR2_DIMM_PARAMS_H
+#define EDC_DATA_PARITY 1
+#define EDC_ECC 2
+#define EDC_AC_PARITY 4
+
/* Parameters for a DDR2 dimm computed from the SPD */
typedef struct dimm_params_s {
unsigned int primary_sdram_width;
unsigned int ec_sdram_width;
unsigned int registered_dimm;
+ unsigned int device_width; /* x4, x8, x16 components */
/* SDRAM device parameters */
unsigned int n_row_addr;
/* DIMM timing parameters */
unsigned int mtb_ps; /* medium timebase ps, only for ddr3 */
- unsigned int tAA_ps; /* minimum CAS latency time, only for ddr3 */
- unsigned int tFAW_ps; /* four active window delay, only for ddr3 */
+ unsigned int ftb_10th_ps; /* fine timebase, in 1/10 ps, only for ddr3 */
+ unsigned int taa_ps; /* minimum CAS latency time, only for ddr3 */
+ unsigned int tfaw_ps; /* four active window delay, only for ddr3 */
/*
* SDRAM clock periods
* The range for these are 1000-10000 so a short should be sufficient
*/
- unsigned int tCKmin_X_ps;
- unsigned int tCKmin_X_minus_1_ps;
- unsigned int tCKmin_X_minus_2_ps;
- unsigned int tCKmax_ps;
+ unsigned int tckmin_x_ps;
+ unsigned int tckmin_x_minus_1_ps;
+ unsigned int tckmin_x_minus_2_ps;
+ unsigned int tckmax_ps;
/* SPD-defined CAS latencies */
- unsigned int caslat_X;
- unsigned int caslat_X_minus_1;
- unsigned int caslat_X_minus_2;
+ unsigned int caslat_x;
+ unsigned int caslat_x_minus_1;
+ unsigned int caslat_x_minus_2;
unsigned int caslat_lowest_derated; /* Derated CAS latency */
/* basic timing parameters */
- unsigned int tRCD_ps;
- unsigned int tRP_ps;
- unsigned int tRAS_ps;
+ unsigned int trcd_ps;
+ unsigned int trp_ps;
+ unsigned int tras_ps;
- unsigned int tWR_ps; /* maximum = 63750 ps */
- unsigned int tWTR_ps; /* maximum = 63750 ps */
- unsigned int tRFC_ps; /* max = 255 ns + 256 ns + .75 ns
+ unsigned int twr_ps; /* maximum = 63750 ps */
+ unsigned int twtr_ps; /* maximum = 63750 ps */
+ unsigned int trfc_ps; /* max = 255 ns + 256 ns + .75 ns
= 511750 ps */
- unsigned int tRRD_ps; /* maximum = 63750 ps */
- unsigned int tRC_ps; /* maximum = 254 ns + .75 ns = 254750 ps */
+ unsigned int trrd_ps; /* maximum = 63750 ps */
+ unsigned int trc_ps; /* maximum = 254 ns + .75 ns = 254750 ps */
unsigned int refresh_rate_ps;
+ unsigned int extended_op_srt;
/* DDR3 doesn't need these as below */
- unsigned int tIS_ps; /* byte 32, spd->ca_setup */
- unsigned int tIH_ps; /* byte 33, spd->ca_hold */
- unsigned int tDS_ps; /* byte 34, spd->data_setup */
- unsigned int tDH_ps; /* byte 35, spd->data_hold */
- unsigned int tRTP_ps; /* byte 38, spd->trtp */
- unsigned int tDQSQ_max_ps; /* byte 44, spd->tdqsq */
- unsigned int tQHS_ps; /* byte 45, spd->tqhs */
+ unsigned int tis_ps; /* byte 32, spd->ca_setup */
+ unsigned int tih_ps; /* byte 33, spd->ca_hold */
+ unsigned int tds_ps; /* byte 34, spd->data_setup */
+ unsigned int tdh_ps; /* byte 35, spd->data_hold */
+ unsigned int trtp_ps; /* byte 38, spd->trtp */
+ unsigned int tdqsq_max_ps; /* byte 44, spd->tdqsq */
+ unsigned int tqhs_ps; /* byte 45, spd->tqhs */
/* DDR3 RDIMM */
unsigned char rcw[16]; /* Register Control Word 0-15 */