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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-12-10 14:31:56 +0100 | 
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-12-10 22:23:59 +0100 | 
| commit | f15ea6e1d67782a1626d4a4922b6c20e380085e5 (patch) | |
| tree | 57d78f1ee94a2060eaa591533278d2934d4f1da3 /include/fsl_ddr_dimm_params.h | |
| parent | cb7ee1b98cac6baf244daefb1192adf5a47bc983 (diff) | |
| parent | f44483b57c49282299da0e5c10073b909cdad979 (diff) | |
| download | olio-uboot-2014.01-f15ea6e1d67782a1626d4a4922b6c20e380085e5.tar.xz olio-uboot-2014.01-f15ea6e1d67782a1626d4a4922b6c20e380085e5.zip | |
Merge branch 'u-boot/master' into 'u-boot-arm/master'
Conflicts:
	arch/arm/cpu/armv7/rmobile/Makefile
	doc/README.scrapyard
Needed manual fix:
	arch/arm/cpu/armv7/omap-common/Makefile
	board/compulab/cm_t335/u-boot.lds
Diffstat (limited to 'include/fsl_ddr_dimm_params.h')
| -rw-r--r-- | include/fsl_ddr_dimm_params.h | 101 | 
1 files changed, 101 insertions, 0 deletions
| diff --git a/include/fsl_ddr_dimm_params.h b/include/fsl_ddr_dimm_params.h new file mode 100644 index 000000000..99a72bc6e --- /dev/null +++ b/include/fsl_ddr_dimm_params.h @@ -0,0 +1,101 @@ +/* + * Copyright 2008 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + */ + +#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 { + +	/* DIMM organization parameters */ +	char mpart[19];		/* guaranteed null terminated */ + +	unsigned int n_ranks; +	unsigned long long rank_density; +	unsigned long long capacity; +	unsigned int data_width; +	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; +	unsigned int n_col_addr; +	unsigned int edc_config;	/* 0 = none, 1 = parity, 2 = ECC */ +	unsigned int n_banks_per_sdram_device; +	unsigned int burst_lengths_bitmask;	/* BL=4 bit 2, BL=8 = bit 3 */ +	unsigned int row_density; + +	/* used in computing base address of DIMMs */ +	unsigned long long base_address; +	/* mirrored DIMMs */ +	unsigned int mirrored_dimm;	/* only for ddr3 */ + +	/* DIMM timing parameters */ + +	unsigned int mtb_ps;	/* medium timebase ps, 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; + +	/* SPD-defined CAS latencies */ +	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 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 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 */ + +	/* DDR3 RDIMM */ +	unsigned char rcw[16];	/* Register Control Word 0-15 */ +} dimm_params_t; + +extern unsigned int ddr_compute_dimm_parameters( +					 const generic_spd_eeprom_t *spd, +					 dimm_params_t *pdimm, +					 unsigned int dimm_number); + +#endif |