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annotate src/cs/drivers/drv_app/ffs/board/drv.h @ 110:6ed76fdb72d5

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README: better explanation of current status and what needs to be done next
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 28 Jul 2018 06:37:29 +0000
parents b6a5e36de839
children
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1 /******************************************************************************
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2 * Flash File System (ffs)
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3 * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
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4 *
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5 * ffs low level flash driver
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6 *
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7 * $Id: drv.h 1.15.1.25.1.1.1.20 Mon, 17 Nov 2003 08:51:37 +0100 tsj $
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8 *
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9 ******************************************************************************/
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10
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11 #ifndef TARGET
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12 #include "ffs.cfg"
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13 #endif
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14
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15 #if (TARGET == 1)
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16 #include "chipset.cfg"
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17 #endif
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18
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19
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20 /******************************************************************************
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21 * Compile constants
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22 ******************************************************************************/
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23
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24 // FFS driver version (in four-digit BCD format). Format is MMID, where MM
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25 // is major revision number, incremented e.g. for major revision or support
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26 // for new flash family/driver. I is minor revision that is incremented for
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27 // minor changes or when a bug is corrected. D is incremented when support
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28 // of another device is added.
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29 #define FFS_DRV_VERSION ((uint16) 0x1011)
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30
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31 // Default Allocation granularity of ffs data sectors (as power of two)
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32 #define FFS_ATOM_LOG2 4
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33
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34
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35 /******************************************************************************
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36 * Macros
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37 ******************************************************************************/
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38
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39 // Convert between address and block index. Only works if all blocks are the
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40 // same size!
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41 #define block2addr(block) (dev.base + dev.binfo[block].offset)
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42
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43 // Note that it is *VERY* important that pointers to hardware and flash are
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44 // declared volatile, otherwise the compiler optimizes some reads and writes
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45 // out and this results in non-working code!
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46 #define FLASH_WRITE_HALFWORD(addr, data) *(volatile uint16 *) (addr) = (data)
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47 #define FLASH_READ_HALFWORD(addr) *((volatile uint16 *) (addr))
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48
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49 #if (TARGET == 1)
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50
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51 #include "memif/mem.h"
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52 #if (CHIPSET == 12)
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53 #include "sys_inth.h"
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54 #else
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55 #include "inth/inth.h"
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56 #endif
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57
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58 #if (CHIPSET == 3)
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59 #define INT_REQUESTED (*(volatile uint16 *) INTH_IT_REG) & \
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60 ~(*(volatile uint16 *) INTH_MASK_REG)
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61 #elif (CHIPSET == 4 || CHIPSET == 5 || CHIPSET == 6 || CHIPSET == 7 || CHIPSET == 8 || CHIPSET == 9 || CHIPSET == 10 || CHIPSET == 11)
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62 #define INT_REQUESTED ((*(volatile uint16 *) INTH_IT_REG1) & \
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63 ~(*(volatile uint16 *) INTH_MASK_REG1)) || \
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64 ((*(volatile uint16 *) INTH_IT_REG2) & \
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65 ~(*(volatile uint16 *) INTH_MASK_REG2))
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66 #elif (CHIPSET == 12)
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67 #define INT_REQUESTED ((*(volatile uint16 *) C_INTH_IT_REG1) & \
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68 ~(*(volatile uint16 *) C_INTH_MASK_REG1)) || \
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69 ((*(volatile uint16 *) C_INTH_IT_REG2) & \
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70 ~(*(volatile uint16 *) C_INTH_MASK_REG2))
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71 #endif
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72 #endif // (TARGET == 1)
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73
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74
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75 /******************************************************************************
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76 * Types
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77 ******************************************************************************/
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78
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79 // Flash driver identifiers.
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80 enum FFS_DRIVER {
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81 FFS_DRIVER_NULL = 0, // Null driver
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82
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83 FFS_DRIVER_AMD = 2, // AMD dual/multi-bank driver
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84 FFS_DRIVER_AMD_SB = 3, // AMD single-bank driver
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85
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86 FFS_DRIVER_SST = 8, // SST dual/multi-bank driver
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87 FFS_DRIVER_SST_SB = 9, // SST single-bank driver
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88
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89 FFS_DRIVER_INTEL = 16, // Intel dual/multi-bank driver
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90 FFS_DRIVER_INTEL_SB = 17, // Intel single-bank driver
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91
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92 FFS_DRIVER_AMD_PSEUDO_SB = 32, // Test driver
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93 FFS_DRIVER_TEST = 34, // Test driver
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94
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95 FFS_DRIVER_RAM = 64 // Ram driver
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96 };
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97
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98
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99 // Manufacturer identifiers. These should never have to be changed. They are
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100 // ordered in alphabetically ascending order.
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101 enum FFS_MANUFACTURER {
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102 MANUFACT_AMD = 0x01,
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103 MANUFACT_ATMEL = 0x1F,
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104 MANUFACT_FUJITSU = 0x04,
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105 MANUFACT_INTEL = 0x89,
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106 MANUFACT_MXIC = 0xC2,
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107 MANUFACT_SAMSUNG = 0xEC,
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108 MANUFACT_SHARP = 0xB0,
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109 MANUFACT_SST = 0xBF,
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110 MANUFACT_TOSHIBA = 0x98,
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111 MANUFACT_RAM = 0xFE, // Ram
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112 MANUFACT_TEST = 0x54 // 'T'est manufacturer
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113 };
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114
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115
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116 // Flash block information for one ffs block (flash sector). Note that the
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117 // ffs block definition might be of a smaller size then the physical flash
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118 // sector. The ffs blocks must be defined in ascending order of addresses.
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119 struct block_info_s {
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120 uint32 offset;
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121 uint8 size_ld; // log2 of block size
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122 uint8 unused1;
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123 uint8 unused2;
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124 uint8 unused3;
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125 };
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126
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127
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128 // General flash information for one flash device
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129 struct flash_info_s {
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130 const struct block_info_s *binfo; // block info array for this device
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131 char *base; // base flash address of ffs blocks
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132 uint16 manufact; // read with flash A0 = 0
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133 uint16 device; // read with flash A0 = 1
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134 uint8 driver; // flash driver type
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135 uint8 numblocks; // number of blocks defined for use by ffs
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136 };
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137 extern const struct flash_info_s flash_info[];
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138
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139 enum DEVICE_STATE {
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140 DEV_READ,
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141 DEV_ERASE,
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142 DEV_ERASE_SUSPEND,
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143 DEV_WRITE
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144 };
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145
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146
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147 // Note that it is *VERY* important that pointers to hardware and flash are
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148 // declared volatile, otherwise the compiler optimizes some reads and writes
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149 // out and this results in non-working code!
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150 struct dev_s {
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151 char *base; // base flash address of ffs blocks
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152 struct block_info_s *binfo;
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153 uint16 manufact;
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154 uint16 device;
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155 volatile uint16 *addr; // address being written or erased
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156 uint16 data; // data currently being written (dev.state = WRITE)
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157 uint32 blocksize;
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158 uint8 blocksize_ld;
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159 uint8 atomlog2;
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160 uint8 driver;
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161 uint8 state; // state of device (DEVICE_STATE)
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162 uint8 numblocks;
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163 uint8 atomsize;
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164 uint8 atomnotmask;
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165 };
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166 extern struct dev_s dev;
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167
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168
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169 // Flash low level driver function pointers
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170 struct ffsdrv_s {
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171 int (* init)(void);
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172 void (* erase)(uint8 block);
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173 void (* write_halfword)(volatile uint16 *dst, uint16 value);
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174 void (* write)(void *dst, const void *src, uint16 size);
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175 void (* write_end)(void);
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176 void (* erase_suspend)(void);
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177 void (* erase_resume)(void);
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178 };
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179 extern struct ffsdrv_s ffsdrv;
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180
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181
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182 /******************************************************************************
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183 * Function Prototypes
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184 ******************************************************************************/
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185
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186 void ffsdrv_write_byte(void *dst, uint8 value);
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187 effs_t ffsdrv_init(void);
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188
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189 extern int ffs_ram_image_address;