include/fsl_ddr.h

   1 /*
   2  * Copyright 2008-2014 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0
   5  */
   6
   7 #ifndef FSL_DDR_MAIN_H
   8 #define FSL_DDR_MAIN_H
   9
  10 #include <fsl_ddrc_version.h>
  11 #include <fsl_ddr_sdram.h>
  12 #include <fsl_ddr_dimm_params.h>
  13
  14 #include <common_timing_params.h>
  15
  16 #ifndef CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS
  17 /* All controllers are for main memory */
  18 #define CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS       CONFIG_SYS_NUM_DDR_CTLRS
  19 #endif
  20
  21 #ifdef CONFIG_SYS_FSL_DDR_LE
  22 #define ddr_in32(a)     in_le32(a)
  23 #define ddr_out32(a, v) out_le32(a, v)
  24 #define ddr_setbits32(a, v)     setbits_le32(a, v)
  25 #define ddr_clrbits32(a, v)     clrbits_le32(a, v)
  26 #define ddr_clrsetbits32(a, clear, set) clrsetbits_le32(a, clear, set)
  27 #else
  28 #define ddr_in32(a)     in_be32(a)
  29 #define ddr_out32(a, v) out_be32(a, v)
  30 #define ddr_setbits32(a, v)     setbits_be32(a, v)
  31 #define ddr_clrbits32(a, v)     clrbits_be32(a, v)
  32 #define ddr_clrsetbits32(a, clear, set) clrsetbits_be32(a, clear, set)
  33 #endif
  34
  35 u32 fsl_ddr_get_version(unsigned int ctrl_num);
  36
  37 #if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM)
  38 /*
  39  * Bind the main DDR setup driver's generic names
  40  * to this specific DDR technology.
  41  */
  42 static __inline__ int
  43 compute_dimm_parameters(const unsigned int ctrl_num,
  44                         const generic_spd_eeprom_t *spd,
  45                         dimm_params_t *pdimm,
  46                         unsigned int dimm_number)
  47 {
  48         return ddr_compute_dimm_parameters(ctrl_num, spd, pdimm, dimm_number);
  49 }
  50 #endif
  51
  52 /*
  53  * Data Structures
  54  *
  55  * All data structures have to be on the stack
  56  */
  57 #define CONFIG_SYS_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR
  58
  59 typedef struct {
  60         generic_spd_eeprom_t
  61            spd_installed_dimms[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
  62         struct dimm_params_s
  63            dimm_params[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
  64         memctl_options_t memctl_opts[CONFIG_SYS_NUM_DDR_CTLRS];
  65         common_timing_params_t common_timing_params[CONFIG_SYS_NUM_DDR_CTLRS];
  66         fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CONFIG_SYS_NUM_DDR_CTLRS];
  67         unsigned int first_ctrl;
  68         unsigned int num_ctrls;
  69         unsigned long long mem_base;
  70         unsigned int dimm_slots_per_ctrl;
  71         int (*board_need_mem_reset)(void);
  72         void (*board_mem_reset)(void);
  73         void (*board_mem_de_reset)(void);
  74 } fsl_ddr_info_t;
  75
  76 /* Compute steps */
  77 #define STEP_GET_SPD                 (1 << 0)
  78 #define STEP_COMPUTE_DIMM_PARMS      (1 << 1)
  79 #define STEP_COMPUTE_COMMON_PARMS    (1 << 2)
  80 #define STEP_GATHER_OPTS             (1 << 3)
  81 #define STEP_ASSIGN_ADDRESSES        (1 << 4)
  82 #define STEP_COMPUTE_REGS            (1 << 5)
  83 #define STEP_PROGRAM_REGS            (1 << 6)
  84 #define STEP_ALL                     0xFFF
  85
  86 unsigned long long
  87 fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
  88                                        unsigned int size_only);
  89 const char *step_to_string(unsigned int step);
  90
  91 unsigned int compute_fsl_memctl_config_regs(const unsigned int ctrl_num,
  92                                const memctl_options_t *popts,
  93                                fsl_ddr_cfg_regs_t *ddr,
  94                                const common_timing_params_t *common_dimm,
  95                                const dimm_params_t *dimm_parameters,
  96                                unsigned int dbw_capacity_adjust,
  97                                unsigned int size_only);
  98 unsigned int compute_lowest_common_dimm_parameters(
  99                                 const unsigned int ctrl_num,
 100                                 const dimm_params_t *dimm_params,
 101                                 common_timing_params_t *outpdimm,
 102                                 unsigned int number_of_dimms);
 103 unsigned int populate_memctl_options(const common_timing_params_t *common_dimm,
 104                                 memctl_options_t *popts,
 105                                 dimm_params_t *pdimm,
 106                                 unsigned int ctrl_num);
 107 void check_interleaving_options(fsl_ddr_info_t *pinfo);
 108
 109 unsigned int mclk_to_picos(const unsigned int ctrl_num, unsigned int mclk);
 110 unsigned int get_memory_clk_period_ps(const unsigned int ctrl_num);
 111 unsigned int picos_to_mclk(const unsigned int ctrl_num, unsigned int picos);
 112 void fsl_ddr_set_lawbar(
 113                 const common_timing_params_t *memctl_common_params,
 114                 unsigned int memctl_interleaved,
 115                 unsigned int ctrl_num);
 116 void fsl_ddr_sync_memctl_refresh(unsigned int first_ctrl,
 117                                  unsigned int last_ctrl);
 118
 119 int fsl_ddr_interactive_env_var_exists(void);
 120 unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set);
 121 void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 122                      unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl);
 123
 124 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 125 unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr);
 126 void board_add_ram_info(int use_default);
 127
 128 /* processor specific function */
 129 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 130                                    unsigned int ctrl_num, int step);
 131 void remove_unused_controllers(fsl_ddr_info_t *info);
 132
 133 /* board specific function */
 134 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
 135                         unsigned int controller_number,
 136                         unsigned int dimm_number);
 137 void update_spd_address(unsigned int ctrl_num,
 138                         unsigned int slot,
 139                         unsigned int *addr);
 140
 141 void erratum_a009942_check_cpo(void);
 142 #endif