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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/include/fsl_ddr_dimm_params.h | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/include/fsl_ddr_dimm_params.h')
-rw-r--r-- | roms/u-boot/include/fsl_ddr_dimm_params.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/roms/u-boot/include/fsl_ddr_dimm_params.h b/roms/u-boot/include/fsl_ddr_dimm_params.h new file mode 100644 index 000000000..58b42b875 --- /dev/null +++ b/roms/u-boot/include/fsl_ddr_dimm_params.h @@ -0,0 +1,120 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008-2016 Freescale Semiconductor, Inc. + * Copyright 2017-2018 NXP Semiconductor + */ + +#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 DDR dimm computed from the SPD */ +typedef struct dimm_params_s { + + /* DIMM organization parameters */ + char mpart[19]; /* guaranteed null terminated */ + + unsigned int n_ranks; + unsigned int die_density; + 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 package_3ds; /* number of dies in 3DS 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 */ +#ifdef CONFIG_SYS_FSL_DDR4 + unsigned int bank_addr_bits; + unsigned int bank_group_bits; +#else + unsigned int n_banks_per_sdram_device; +#endif + unsigned int burst_lengths_bitmask; /* BL=4 bit 2, BL=8 = bit 3 */ + + /* used in computing base address of DIMMs */ + unsigned long long base_address; + /* mirrored DIMMs */ + unsigned int mirrored_dimm; /* only for ddr3 */ + + /* DIMM timing parameters */ + + int mtb_ps; /* medium timebase ps */ + int ftb_10th_ps; /* fine timebase, in 1/10 ps */ + int taa_ps; /* minimum CAS latency time */ + int tfaw_ps; /* four active window delay */ + + /* + * SDRAM clock periods + * The range for these are 1000-10000 so a short should be sufficient + */ + int tckmin_x_ps; + int tckmin_x_minus_1_ps; + int tckmin_x_minus_2_ps; + 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 */ + int trcd_ps; + int trp_ps; + int tras_ps; + +#ifdef CONFIG_SYS_FSL_DDR4 + int trfc1_ps; + int trfc2_ps; + int trfc4_ps; + int trrds_ps; + int trrdl_ps; + int tccdl_ps; + int trfc_slr_ps; +#else + int twr_ps; /* maximum = 63750 ps */ + int trfc_ps; /* max = 255 ns + 256 ns + .75 ns + = 511750 ps */ + int trrd_ps; /* maximum = 63750 ps */ + int twtr_ps; /* maximum = 63750 ps */ + int trtp_ps; /* byte 38, spd->trtp */ +#endif + + int trc_ps; /* maximum = 254 ns + .75 ns = 254750 ps */ + + int refresh_rate_ps; + int extended_op_srt; + +#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2) + int tis_ps; /* byte 32, spd->ca_setup */ + int tih_ps; /* byte 33, spd->ca_hold */ + int tds_ps; /* byte 34, spd->data_setup */ + int tdh_ps; /* byte 35, spd->data_hold */ + int tdqsq_max_ps; /* byte 44, spd->tdqsq */ + int tqhs_ps; /* byte 45, spd->tqhs */ +#endif + + /* DDR3 & DDR4 RDIMM */ + unsigned char rcw[16]; /* Register Control Word 0-15 */ +#ifdef CONFIG_SYS_FSL_DDR4 + unsigned int dq_mapping[18]; + unsigned int dq_mapping_ors; +#endif +} dimm_params_t; + +unsigned int ddr_compute_dimm_parameters(const unsigned int ctrl_num, + const generic_spd_eeprom_t *spd, + dimm_params_t *pdimm, + unsigned int dimm_number); + +#endif |