arch/arm/cpu/arm926ejs/sc8800g/sdram_prod.c

   1 /******************************************************************************
   2  ** File Name:      sdram_prod.c                                              *
   3  ** Author:                                                                   *
   4  ** DATE:           04/18/2008                                                *
   5  ** Copyright:      2008 Spreadtrum, Incoporated. All Rights Reserved.        *
   6  ** Description:    This file defines the product configurable parameters of  *
   7  **                 SDRAM module                                              *
   8  **                                                                           *
   9  ******************************************************************************
  10
  11  ******************************************************************************
  12  **                        Edit History                                       *
  13  ** ------------------------------------------------------------------------- *
  14  ** DATE           NAME             DESCRIPTION                               *
  15  ** 04/18/2008                          Create.                                           *
  16  ******************************************************************************/
  17
  18 /**---------------------------------------------------------------------------*
  19  **                         Dependencies                                      *
  20  **---------------------------------------------------------------------------*/
  21 #include <asm/arch/sci_types.h>
  22 #include <asm/arch/sdram_cfg.h>
  23
  24 /**---------------------------------------------------------------------------*
  25  **                         Debugging Flag                                    *
  26  **---------------------------------------------------------------------------*/
  27
  28
  29
  30 /**---------------------------------------------------------------------------*
  31  **                         Compiler Flag                                     *
  32  **---------------------------------------------------------------------------*/
  33 #ifdef   __cplusplus
  34     extern   "C"
  35     {
  36 #endif
  37
  38 /*********************************************************************************/
  39 //             Macro Definition
  40 /*********************************************************************************/
  41 // Feature
  42 #if defined (BB_DRAM_TYPE_32MB_16BIT)
  43 #define SDRAM_ROW_MODE          ROW_MODE_13
  44 #define SDRAM_COL_MODE          COL_MODE_9
  45 #define SDRAM_DATA_WIDTH        DATA_WIDTH_16
  46 #define SDRAM_SIZE                      SDRAM_32M
  47
  48 #elif defined(BB_DRAM_TYPE_32MB_32BIT_13R)
  49 #define SDRAM_ROW_MODE          ROW_MODE_13
  50 #define SDRAM_COL_MODE          COL_MODE_8
  51 #define SDRAM_DATA_WIDTH        DATA_WIDTH_32
  52 #define SDRAM_SIZE                      SDRAM_32M
  53
  54 #elif defined(BB_DRAM_TYPE_32MB_32BIT_12R)
  55 #define SDRAM_ROW_MODE          ROW_MODE_12
  56 #define SDRAM_COL_MODE          COL_MODE_9
  57 #define SDRAM_DATA_WIDTH        DATA_WIDTH_32
  58 #define SDRAM_SIZE                      SDRAM_32M
  59
  60 #elif defined(BB_DRAM_TYPE_64MB_16BIT)
  61 #define SDRAM_ROW_MODE          ROW_MODE_13
  62 #define SDRAM_COL_MODE          COL_MODE_10
  63 #define SDRAM_DATA_WIDTH        DATA_WIDTH_16
  64 #define SDRAM_SIZE                      SDRAM_64M
  65
  66 #elif defined(BB_DRAM_TYPE_64MB_32BIT)
  67 #define SDRAM_ROW_MODE          ROW_MODE_13
  68 #define SDRAM_COL_MODE          COL_MODE_9
  69 #define SDRAM_DATA_WIDTH        DATA_WIDTH_32
  70 #define SDRAM_SIZE                      SDRAM_64M
  71
  72 #elif defined(BB_DRAM_TYPE_128MB_16BIT)
  73 #define SDRAM_ROW_MODE          ROW_MODE_14
  74 #define SDRAM_COL_MODE          COL_MODE_10
  75 #define SDRAM_DATA_WIDTH        DATA_WIDTH_16
  76 #define SDRAM_SIZE                      SDRAM_128M
  77
  78 #elif defined(BB_DRAM_TYPE_128MB_32BIT)
  79 #define SDRAM_ROW_MODE          ROW_MODE_13
  80 #define SDRAM_COL_MODE          COL_MODE_10
  81 #define SDRAM_DATA_WIDTH        DATA_WIDTH_32
  82 #define SDRAM_SIZE                      SDRAM_128M
  83
  84 #elif defined(BB_DRAM_TYPE_256MB_32BIT)
  85 #define SDRAM_ROW_MODE          ROW_MODE_14
  86 #define SDRAM_COL_MODE          COL_MODE_10
  87 #define SDRAM_DATA_WIDTH        DATA_WIDTH_32
  88 #define SDRAM_SIZE                      SDRAM_256M
  89
  90 #else
  91 #error do not select size and bit width for SDRAM
  92 #endif
  93
  94 #define BK_MODE                 BK_MODE_4
  95
  96 #if defined(PLATFORM_SC8800H)
  97 #define BURST_LEN               BURST_LEN_8
  98 #elif defined(PLATFORM_SC6800H)
  99 #define BURST_LEN               BURST_LEN_2
 100 #elif defined(PLATFORM_SC8800G)
 101 #define BURST_LEN               BURST_LEN_2
 102 #else
 103 #error do not select burst len for SDRAM
 104 #endif
 105
 106 #define CAS_LATENCY     CAS_LATENCY_3
 107
 108 // Include Product config
 109 #include "sdram_cfg.c"
 110
 111 /**---------------------------------------------------------------------------*
 112  **                         Local Variables                                   *
 113  **---------------------------------------------------------------------------*/
 114 /*******************************************************************************/
 115 //   sdram_parameters[] is used to config SDRAM controller according to variable
 116 //sdram. The unit is ns. The end of array is marked with 0xffffffff at the last element.
 117 /*******************************************************************************/
 118 LOCAL CONST SDRAM_TIMING_PARA_T s_sdram_timing_param =
 119 //  ms    ns   ns    ns            ns    ns       ns    ns  clk   clk
 120 //  tREF, tRP, tRCD, tWR/tRDL/tDPL,tRFC,tXSR,     tRAS,tRRD,tMRD, tWTR(wtr is only for ddr)
 121     {64,   30,  30,   20,          110, 150,      60,  20,  2,    2   };
 122
 123 /*******************************************************************************/
 124 //   sdram_cofig_info is used to config sdram controller when to init sdram
 125 /*******************************************************************************/
 126 LOCAL CONST SDRAM_CFG_INFO_T s_sdram_config_info =
 127 {
 128         BK_MODE,
 129         SDRAM_ROW_MODE,
 130         SDRAM_COL_MODE,
 131         SDRAM_DATA_WIDTH,
 132         BURST_LEN,
 133         CAS_LATENCY,
 134         SDRAM_EXT_MODE_VALUE,
 135         SDR_SDRAM
 136 };
 137
 138 /**---------------------------------------------------------------------------*
 139  **                     Public Function Prototypes                            *
 140  **---------------------------------------------------------------------------*/
 141 /*****************************************************************************/
 142 //  Description:    This function get sdram config pointer
 143 //  Author:         nick.zhao
 144 //  Note:
 145 /*****************************************************************************/
 146 PUBLIC SDRAM_CFG_INFO_T_PTR SDRAM_GetCfg(void)
 147 {
 148   return (SDRAM_CFG_INFO_T_PTR)&s_sdram_config_info;
 149 }
 150
 151 /*****************************************************************************/
 152 //  Description:    This function get sdram timing parameter pointer
 153 //  Author:         Liangwen.Zhen
 154 //  Note:
 155 /*****************************************************************************/
 156 PUBLIC SDRAM_TIMING_PARA_T_PTR SDRAM_GetTimingPara(void)
 157 {
 158         return (SDRAM_TIMING_PARA_T_PTR)&s_sdram_timing_param;
 159 }
 160
 161 /*****************************************************************************/
 162 //  Description:    This function can be defined by user if needed. It will be called
 163 //                  before the SDRAM initialization.
 164 //  Author:         nick.zhao
 165 //  Note:
 166 /*****************************************************************************/
 167 PUBLIC void Userdef_before_sdram_init(void)
 168 {
 169    return;
 170 }
 171 /*****************************************************************************/
 172 //  Description:    This function can be defined by user if needed. It will be called
 173 //                  after the SDRAM initialization.
 174 //  Author:         nick.zhao
 175 //  Note:
 176 /*****************************************************************************/
 177 PUBLIC void Userdef_after_sdram_init(void)
 178 {
 179    return;
 180 }
 181
 182 /**---------------------------------------------------------------------------*
 183  **                         Compiler Flag                                     *
 184  **---------------------------------------------------------------------------*/
 185 #ifdef   __cplusplus
 186     }
 187
 188 #endif
 189
 190