| Kumar Gala | 58e5e9a | 2008-08-26 15:01:29 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * Version 2 as published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #ifndef FSL_DDR_MEMCTL_H |
| 10 | #define FSL_DDR_MEMCTL_H |
| 11 | |
| 12 | /* |
| 13 | * Pick a basic DDR Technology. |
| 14 | */ |
| 15 | #include <ddr_spd.h> |
| 16 | |
| 17 | #define SDRAM_TYPE_DDR1 2 |
| 18 | #define SDRAM_TYPE_DDR2 3 |
| 19 | #define SDRAM_TYPE_LPDDR1 6 |
| 20 | #define SDRAM_TYPE_DDR3 7 |
| 21 | |
| 22 | #if defined(CONFIG_FSL_DDR1) |
| 23 | #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (1) |
| 24 | typedef ddr1_spd_eeprom_t generic_spd_eeprom_t; |
| 25 | #ifndef CONFIG_FSL_SDRAM_TYPE |
| 26 | #define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR1 |
| 27 | #endif |
| 28 | #elif defined(CONFIG_FSL_DDR2) |
| 29 | #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) |
| 30 | typedef ddr2_spd_eeprom_t generic_spd_eeprom_t; |
| 31 | #ifndef CONFIG_FSL_SDRAM_TYPE |
| 32 | #define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR2 |
| 33 | #endif |
| 34 | #elif defined(CONFIG_FSL_DDR3) |
| 35 | #define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */ |
| 36 | typedef ddr3_spd_eeprom_t generic_spd_eeprom_t; |
| 37 | #endif |
| 38 | |
| 39 | /* Record of register values computed */ |
| 40 | typedef struct fsl_ddr_cfg_regs_s { |
| 41 | struct { |
| 42 | unsigned int bnds; |
| 43 | unsigned int config; |
| 44 | unsigned int config_2; |
| 45 | } cs[CONFIG_CHIP_SELECTS_PER_CTRL]; |
| 46 | unsigned int timing_cfg_3; |
| 47 | unsigned int timing_cfg_0; |
| 48 | unsigned int timing_cfg_1; |
| 49 | unsigned int timing_cfg_2; |
| 50 | unsigned int ddr_sdram_cfg; |
| 51 | unsigned int ddr_sdram_cfg_2; |
| 52 | unsigned int ddr_sdram_mode; |
| 53 | unsigned int ddr_sdram_mode_2; |
| 54 | unsigned int ddr_sdram_md_cntl; |
| 55 | unsigned int ddr_sdram_interval; |
| 56 | unsigned int ddr_data_init; |
| 57 | unsigned int ddr_sdram_clk_cntl; |
| 58 | unsigned int ddr_init_addr; |
| 59 | unsigned int ddr_init_ext_addr; |
| 60 | unsigned int timing_cfg_4; |
| 61 | unsigned int timing_cfg_5; |
| 62 | unsigned int ddr_zq_cntl; |
| 63 | unsigned int ddr_wrlvl_cntl; |
| 64 | unsigned int ddr_pd_cntl; |
| 65 | unsigned int ddr_sr_cntr; |
| 66 | unsigned int ddr_sdram_rcw_1; |
| 67 | unsigned int ddr_sdram_rcw_2; |
| 68 | } fsl_ddr_cfg_regs_t; |
| 69 | |
| 70 | typedef struct memctl_options_partial_s { |
| 71 | unsigned int all_DIMMs_ECC_capable; |
| 72 | unsigned int all_DIMMs_tCKmax_ps; |
| 73 | unsigned int all_DIMMs_burst_lengths_bitmask; |
| 74 | unsigned int all_DIMMs_registered; |
| 75 | unsigned int all_DIMMs_unbuffered; |
| 76 | /* unsigned int lowest_common_SPD_caslat; */ |
| 77 | unsigned int all_DIMMs_minimum_tRCD_ps; |
| 78 | } memctl_options_partial_t; |
| 79 | |
| 80 | /* |
| 81 | * Generalized parameters for memory controller configuration, |
| 82 | * might be a little specific to the FSL memory controller |
| 83 | */ |
| 84 | typedef struct memctl_options_s { |
| 85 | /* |
| 86 | * Memory organization parameters |
| 87 | * |
| 88 | * if DIMM is present in the system |
| 89 | * where DIMMs are with respect to chip select |
| 90 | * where chip selects are with respect to memory boundaries |
| 91 | */ |
| 92 | unsigned int registered_dimm_en; /* use registered DIMM support */ |
| 93 | |
| 94 | /* Options local to a Chip Select */ |
| 95 | struct cs_local_opts_s { |
| 96 | unsigned int auto_precharge; |
| 97 | unsigned int odt_rd_cfg; |
| 98 | unsigned int odt_wr_cfg; |
| 99 | } cs_local_opts[CONFIG_CHIP_SELECTS_PER_CTRL]; |
| 100 | |
| 101 | /* Special configurations for chip select */ |
| 102 | unsigned int memctl_interleaving; |
| 103 | unsigned int memctl_interleaving_mode; |
| 104 | unsigned int ba_intlv_ctl; |
| 105 | |
| 106 | /* Operational mode parameters */ |
| 107 | unsigned int ECC_mode; /* Use ECC? */ |
| 108 | /* Initialize ECC using memory controller? */ |
| 109 | unsigned int ECC_init_using_memctl; |
| 110 | unsigned int DQS_config; /* Use DQS? maybe only with DDR2? */ |
| 111 | /* SREN - self-refresh during sleep */ |
| 112 | unsigned int self_refresh_in_sleep; |
| 113 | unsigned int dynamic_power; /* DYN_PWR */ |
| 114 | /* memory data width to use (16-bit, 32-bit, 64-bit) */ |
| 115 | unsigned int data_bus_width; |
| 116 | unsigned int burst_length; /* 4, 8 */ |
| 117 | |
| 118 | /* Global Timing Parameters */ |
| 119 | unsigned int cas_latency_override; |
| 120 | unsigned int cas_latency_override_value; |
| 121 | unsigned int use_derated_caslat; |
| 122 | unsigned int additive_latency_override; |
| 123 | unsigned int additive_latency_override_value; |
| 124 | |
| 125 | unsigned int clk_adjust; /* */ |
| 126 | unsigned int cpo_override; |
| 127 | unsigned int write_data_delay; /* DQS adjust */ |
| 128 | unsigned int half_strength_driver_enable; |
| 129 | unsigned int twoT_en; |
| 130 | unsigned int threeT_en; |
| 131 | unsigned int bstopre; |
| 132 | unsigned int tCKE_clock_pulse_width_ps; /* tCKE */ |
| 133 | unsigned int tFAW_window_four_activates_ps; /* tFAW -- FOUR_ACT */ |
| 134 | } memctl_options_t; |
| 135 | |
| 136 | extern phys_size_t fsl_ddr_sdram(void); |
| 137 | #endif |