include/fsl_ddr.h

   1 /*
   2  * Copyright 2008-2014 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_MAIN_H
  10 #define FSL_DDR_MAIN_H
  11
  12 #include <fsl_ddrc_version.h>
  13 #include <fsl_ddr_sdram.h>
  14 #include <fsl_ddr_dimm_params.h>
  15
  16 #include <common_timing_params.h>
  17
  18 #ifdef CONFIG_SYS_FSL_DDR_LE
  19 #define ddr_in32(a)     in_le32(a)
  20 #define ddr_out32(a, v) out_le32(a, v)
  21 #else
  22 #define ddr_in32(a)     in_be32(a)
  23 #define ddr_out32(a, v) out_be32(a, v)
  24 #endif
  25
  26 #define _DDR_ADDR CONFIG_SYS_FSL_DDR_ADDR
  27
  28 u32 fsl_ddr_get_version(void);
  29
  30 #if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM)
  31 /*
  32  * Bind the main DDR setup driver's generic names
  33  * to this specific DDR technology.
  34  */
  35 static __inline__ int
  36 compute_dimm_parameters(const generic_spd_eeprom_t *spd,
  37                         dimm_params_t *pdimm,
  38                         unsigned int dimm_number)
  39 {
  40         return ddr_compute_dimm_parameters(spd, pdimm, dimm_number);
  41 }
  42 #endif
  43
  44 /*
  45  * Data Structures
  46  *
  47  * All data structures have to be on the stack
  48  */
  49 #define CONFIG_SYS_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS
  50 #define CONFIG_SYS_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR
  51
  52 typedef struct {
  53         generic_spd_eeprom_t
  54            spd_installed_dimms[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
  55         struct dimm_params_s
  56            dimm_params[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
  57         memctl_options_t memctl_opts[CONFIG_SYS_NUM_DDR_CTLRS];
  58         common_timing_params_t common_timing_params[CONFIG_SYS_NUM_DDR_CTLRS];
  59         fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CONFIG_SYS_NUM_DDR_CTLRS];
  60 } fsl_ddr_info_t;
  61
  62 /* Compute steps */
  63 #define STEP_GET_SPD                 (1 << 0)
  64 #define STEP_COMPUTE_DIMM_PARMS      (1 << 1)
  65 #define STEP_COMPUTE_COMMON_PARMS    (1 << 2)
  66 #define STEP_GATHER_OPTS             (1 << 3)
  67 #define STEP_ASSIGN_ADDRESSES        (1 << 4)
  68 #define STEP_COMPUTE_REGS            (1 << 5)
  69 #define STEP_PROGRAM_REGS            (1 << 6)
  70 #define STEP_ALL                     0xFFF
  71
  72 unsigned long long
  73 fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
  74                                        unsigned int size_only);
  75
  76 const char *step_to_string(unsigned int step);
  77
  78 unsigned int compute_fsl_memctl_config_regs(const memctl_options_t *popts,
  79                                fsl_ddr_cfg_regs_t *ddr,
  80                                const common_timing_params_t *common_dimm,
  81                                const dimm_params_t *dimm_parameters,
  82                                unsigned int dbw_capacity_adjust,
  83                                unsigned int size_only);
  84 unsigned int compute_lowest_common_dimm_parameters(
  85                                 const dimm_params_t *dimm_params,
  86                                 common_timing_params_t *outpdimm,
  87                                 unsigned int number_of_dimms);
  88 unsigned int populate_memctl_options(int all_dimms_registered,
  89                                 memctl_options_t *popts,
  90                                 dimm_params_t *pdimm,
  91                                 unsigned int ctrl_num);
  92 void check_interleaving_options(fsl_ddr_info_t *pinfo);
  93
  94 unsigned int mclk_to_picos(unsigned int mclk);
  95 unsigned int get_memory_clk_period_ps(void);
  96 unsigned int picos_to_mclk(unsigned int picos);
  97 void fsl_ddr_set_lawbar(
  98                 const common_timing_params_t *memctl_common_params,
  99                 unsigned int memctl_interleaved,
 100                 unsigned int ctrl_num);
 101
 102 int fsl_ddr_interactive_env_var_exists(void);
 103 unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set);
 104 void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 105                            unsigned int ctrl_num);
 106
 107 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 108 unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr);
 109 void board_add_ram_info(int use_default);
 110
 111 /* processor specific function */
 112 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 113                                    unsigned int ctrl_num, int step);
 114
 115 /* board specific function */
 116 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
 117                         unsigned int controller_number,
 118                         unsigned int dimm_number);
 119 #endif