FreeCalypso > hg > fc-magnetite

annotate src/cs/drivers/drv_app/ffs/board/intelsbdrv.c @ 174:90eb61ecd093

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src/g23m-fad: initial import from TCS3.2/LoCosto
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2016 05:40:46 +0000
parents 945cf7f506b2
children
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945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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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 AMD single bank low level flash driver RAM code
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6 *
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7 * $Id: intelsbdrv.c 1.13 Thu, 08 Jan 2004 15:05:23 +0100 tsj $
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8 *
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9 ******************************************************************************/
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10
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11 #include "ffs.cfg"
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12
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13 #include "ffs/ffs.h"
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14 #include "ffs/board/drv.h"
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15 #include "ffs/board/ffstrace.h"
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16
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17
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18 #define INTEL_UNLOCK_SLOW 1
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19
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20
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21 #undef tlw
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22 #define tlw(contents)
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23 #undef ttw
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24 #define ttw(contents)
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25
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26 // Status bits for Intel flash memory devices
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27 #define INTEL_STATE_MACHINE_DONE (1<<7)
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28 #define FLASH_READ(addr) (*(volatile uint16 *) (addr))
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29 #define FLASH_WRITE(addr, data) (*(volatile uint16 *) (addr)) = data
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30
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31 asm(" .label _ffsdrv_ram_intel_begin");
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32 asm(" .def _ffsdrv_ram_intel_begin");
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33
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34 uint32 intel_int_disable(void);
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35 void intel_int_enable(uint32 tmp);
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36
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37 /******************************************************************************
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38 * INTEL Single Bank Driver Functions
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39 ******************************************************************************/
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40 // Actually we should have disabled and enable the interrupts in this
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41 // function, but when the interrupt functions are used Target don't run!
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42 // Anyway, currently the interrupts are already disabled at this point thus
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43 // it does not cause any problems.
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44 int ffsdrv_ram_intel_sb_init(void)
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45 {
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46 uint32 cpsr, i;
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47 volatile char *addr;
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48 uint16 status;
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49
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50 for (i = 0; i < dev.numblocks; i++)
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51 {
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52 addr = block2addr(i);
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53
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54 *addr = 0x50; // Intel Clear Status Register
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55 *addr = 0xFF; // Intel read array
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56
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57 *addr = 0x60; // Intel Config Setup
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58 *addr = 0xD0; // Intel Unlock Block
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59
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60 // Wait for unlock to finish
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61 do {
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62 status = FLASH_READ(addr);
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63 } while (!(status & INTEL_STATE_MACHINE_DONE));
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64
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65 *addr = 0x70; // Intel Read Status Register
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66 status = FLASH_READ(addr);
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67
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68 // Is there an erase suspended?
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69 if ((status & 0x40) != 0) {
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70 *addr = 0xD0; // Intel erase resume
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71
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72 *addr = 0x70; // Intel Read Status Register
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73 // wait for erase to finish
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74 do {
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75 status = FLASH_READ(addr);
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76 } while (!(status & INTEL_STATE_MACHINE_DONE));
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77 }
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78
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79 *addr = 0xFF; // Intel Read Array
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80 }
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81
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82 return 0;
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83 }
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84
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85 void ffsdrv_ram_intel_sb_write_halfword(volatile uint16 *addr, uint16 value)
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86 {
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87 uint32 cpsr;
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88
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89 ttw(ttr(TTrDrv, "wh(%x,%x)" NL, addr, value));
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90
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91 if (~*addr & value) {
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92 ttw(ttr(TTrFatal, "wh(%x,%x->%x) fatal" NL, addr, *addr, value));
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93 return;
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94 }
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95
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96 cpsr = intel_int_disable();
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97 tlw(led_on(LED_WRITE));
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98
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99 #if (INTEL_UNLOCK_SLOW == 1)
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100 *addr = 0x60; // Intel Config Setup
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101 *addr = 0xD0; // Intel Unlock Block
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102 #endif
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103
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104 *addr = 0x50; // Intel Clear Status Register
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105 *addr = 0x40; // Intel program byte/word
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106 *addr = value;
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107 while ((*addr & 0x80) == 0)
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108 ;
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109 *addr = 0xFF; // Intel read array
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110 tlw(led_off(LED_WRITE));
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111 intel_int_enable(cpsr);
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112 }
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113
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114 void ffsdrv_ram_intel_sb_erase(uint8 block)
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115 {
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116 volatile char *addr;
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117 uint32 cpsr;
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118 uint16 poll;
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119
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120 ttw(ttr(TTrDrvEra, "e(%d)" NL, block));
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121
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122 addr = block2addr(block);
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123
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124 cpsr = intel_int_disable();
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125 tlw(led_on(LED_ERASE));
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126
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127 #if (INTEL_UNLOCK_SLOW == 1)
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128 *addr = 0x60; // Intel Config Setup
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129 *addr = 0xD0; // Intel Unlock Block
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130 #endif
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131
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132 *addr = 0x50; // Intel Clear Status Register
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133 *addr = 0x20; // Intel Erase Setup
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134 *addr = 0xD0; // Intel Erase Confirm
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135 *addr = 0x70; // Intel Read Status Register
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136
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137 // Wait for erase to finish.
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138 while ((*addr & 0x80) == 0) {
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139 tlw(led_toggle(LED_ERASE));
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140 // Poll interrupts, taking interrupt mask into account.
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141 if (INT_REQUESTED)
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142 {
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143 // 1. suspend erase
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144 // 2. enable interrupts
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145 // .. now the interrupt code executes
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146 // 3. disable interrupts
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147 // 4. resume erase
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148
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149 tlw(led_on(LED_ERASE_SUSPEND));
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150
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151 *addr = 0xB0; // Intel Erase Suspend
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152 *addr = 0x70; // Intel Read Status Register
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153 while (((poll = *addr) & 0x80) == 0)
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154 ;
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155
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156 // If erase is complete, exit immediately
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157 if ((poll & 0x40) == 0)
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158 break;
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159
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160 *addr = 0xFF; // Intel read array
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161
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162 tlw(led_off(LED_ERASE_SUSPEND));
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163 intel_int_enable(cpsr);
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164
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165 // Other interrupts and tasks run now...
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166
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167 cpsr = intel_int_disable();
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168 tlw(led_on(LED_ERASE_SUSPEND));
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169
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170 *addr = 0xD0; // Intel erase resume
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171 // The following "extra" Read Status command is required because Intel has
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172 // changed the specification of the W30 flash! (See "1.8 Volt Intel®
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173 // Wireless Flash Memory with 3 Volt I/O 28F6408W30, 28F640W30, 28F320W30
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174 // Specification Update")
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175 *addr = 0x70; // Intel Read Status Register
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176
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177 tlw(led_off(LED_ERASE_SUSPEND));
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178 }
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179 }
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180 *addr = 0xFF; // Intel read array
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181
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182 tlw(led_on(LED_ERASE));
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183 tlw(led_off(LED_ERASE));
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184 intel_int_enable(cpsr);
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185 }
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186
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187 // TODO: remove below function, not in use anymore.
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188 void ffsdrv_ram_intel_erase(uint8 block)
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189 {
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190 uint32 cpsr;
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191 uint16 status;
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192
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193 ttw(ttr(TTrDrvErase, "e(%d)" NL, block));
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194 tlw(led_on(LED_ERASE));
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195
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196 dev.addr = (uint16 *) block2addr(block);
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197
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198 cpsr = intel_int_disable();
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199 dev.state = DEV_ERASE;
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200
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201 *dev.addr = 0x60; // Intel Config setup
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diff changeset
202 *dev.addr = 0xD0; // Intel Unlock block
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diff changeset
203
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diff changeset
204 *dev.addr = 0x50; // Intel clear status register (not really necessary)
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diff changeset
205 *dev.addr = 0x20; // Intel erase setup
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diff changeset
206 *dev.addr = 0xD0; // Intel erase confirm
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diff changeset
207
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diff changeset
208 intel_int_enable(cpsr);
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diff changeset
209
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
210 while ((*dev.addr & 0x80) == 0)
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diff changeset
211 ;
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
212
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
213 *dev.addr = 0xFF; // Intel read array
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diff changeset
214 dev.state = DEV_READ;
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diff changeset
215 tlw(led_off(LED_WRITE));
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diff changeset
216 }
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
217
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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218
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diff changeset
219 /******************************************************************************
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diff changeset
220 * Interrupt Enable/Disable
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diff changeset
221 ******************************************************************************/
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diff changeset
222
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
223 uint32 intel_int_disable(void)
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
224 {
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
225 asm(" .state16");
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diff changeset
226 asm(" mov A1, #0xC0");
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diff changeset
227 asm(" ldr A2, tct_intel_disable");
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diff changeset
228 asm(" bx A2 ");
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diff changeset
229
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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diff changeset
230 asm("tct_intel_disable .field _TCT_Control_Interrupts+0,32");
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 asm(" .global _TCT_Control_Interrupts");
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diff changeset
232 }
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
234 void intel_int_enable(uint32 cpsr)
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diff changeset
235 {
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
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parents:
diff changeset
236 asm(" .state16");
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
237 asm(" ldr A2, tct_intel_enable");
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diff changeset
238 asm(" bx A2 ");
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parents:
diff changeset
239
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 asm("tct_intel_enable .field _TCT_Control_Interrupts+0,32");
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 asm(" .global _TCT_Control_Interrupts");
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parents:
diff changeset
242 }
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 // Even though we have this end label, we cannot determine the number of
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parents:
diff changeset
245 // constant/PC-relative data following the code!
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parents:
diff changeset
246 asm(" .state32");
945cf7f506b2 src/cs: chipsetsw import from tcs211-fcmodem
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 asm(" .label _ffsdrv_ram_intel_end");
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parents:
diff changeset
248 asm(" .def _ffsdrv_ram_intel_end");