Mercurial > flash_v2

annotate packages/devs/flash/intel/strata/current/src/strata.c @ 162:2395031e7a66

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Merge from eCos master repository on 2001-06-15-06:43:03-BST
author jlarmour
date Fri, 15 Jun 2001 22:45:04 +0000
parents ac086aa3217e
children 0d2b193a635f
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1 //==========================================================================
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2 //
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3 // strata.c
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4 //
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5 // Flash programming
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas, hmt
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35 // Contributors: gthomas
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36 // Date: 2001-02-14
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37 // Purpose:
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38 // Description:
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39 //
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40 //####DESCRIPTIONEND####
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41 //
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42 //==========================================================================
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43
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44 #include <pkgconf/system.h>
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45 #include <pkgconf/hal.h>
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46 #include <cyg/hal/hal_arch.h>
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47 #include <cyg/hal/hal_cache.h>
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48
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49 #define _FLASH_PRIVATE_
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50 #include <cyg/io/flash.h>
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51
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52 #include "strata.h"
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53
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54 #define _si(p) ((p[1]<<8)|p[0])
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55
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56 extern void diag_dump_buf(void *buf, CYG_ADDRWORD len);
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57
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58 extern int strncmp(const char *s1, const char *s2, int len);
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59
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60 int
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61 flash_hwr_init(void)
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62 {
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63 struct FLASH_query data, *qp;
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64 extern char flash_query, flash_query_end;
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65 typedef int code_fun(unsigned char *);
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66 code_fun *_flash_query;
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67 int code_len, stat, num_regions, region_size, buffer_size;
159
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68 int icache_on, dcache_on;
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69
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70 HAL_DCACHE_IS_ENABLED(dcache_on);
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71 HAL_ICACHE_IS_ENABLED(icache_on);
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72
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73 // Copy 'program' code to RAM for execution
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74 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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75 _flash_query = (code_fun *)flash_info.work_space;
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76 memcpy(_flash_query, &flash_query, code_len);
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77 if (dcache_on) {
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78 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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79 }
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80 if (icache_on) {
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81 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
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82 }
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83
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84 stat = (*_flash_query)((unsigned char *)&data);
159
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85 if (icache_on) {
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86 HAL_ICACHE_ENABLE();
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87 }
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88
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89 qp = &data;
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90 if ( (qp->manuf_code == FLASH_Intel_code)
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91 #ifdef CYGOPT_FLASH_IS_BOOTBLOCK
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92 // device types go as follows: 0x90 for 16-bits, 0xD0 for 8-bits,
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93 // plus 0 or 1 for -T (Top Boot) or -B (Bottom Boot)
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94 // [FIXME: whatever that means :FIXME]
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95 // [I think it means the boot blocks are top/bottom of addr space]
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96 // plus the following size codes:
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97 // 0: 16Mbit 2: 8Mbit 4: 4Mbit
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98 // 6: 32Mbit 8: 64Mbit
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99 #if 16 == CYGNUM_FLASH_WIDTH
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100 && (0x90 == (0xF0 & qp->device_code)) // 16-bit devices
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101 #elif 8 == CYGNUM_FLASH_WIDTH
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102 && (0xD0 == (0xF0 & qp->device_code)) // 8-bit devices
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103 #else
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104 && 0
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105 #error Only understand 16 and 8-bit bootblock flash types
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106 #endif
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107 ) {
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108 int lookup[] = { 16, 8, 4, 32, 64 };
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109 #define BLOCKSIZE (0x10000)
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110 region_size = BLOCKSIZE;
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111 num_regions = qp->device_code & 0x0F;
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112 num_regions >>= 1;
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113 if ( num_regions > 4 )
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114 goto flash_type_unknown;
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115 num_regions = lookup[num_regions];
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116 num_regions *= 1024 * 1024; // to bits
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117 num_regions /= 8; // to bytes
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118 num_regions /= BLOCKSIZE; // to blocks
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119 buffer_size = 0;
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120 #else // CYGOPT_FLASH_IS_BOOTBLOCK
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121 && (strncmp(qp->id, "QRY", 3) == 0)) {
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122 num_regions = _si(qp->num_regions)+1;
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123 region_size = _si(qp->region_size)*256;
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124 if (_si(qp->buffer_size)) {
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125 buffer_size = CYGNUM_FLASH_DEVICES << _si(qp->buffer_size);
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126 } else {
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127 buffer_size = 0;
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128 }
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129 #endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
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130
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131 flash_info.block_size = region_size*CYGNUM_FLASH_DEVICES;
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132 flash_info.buffer_size = buffer_size;
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133 flash_info.blocks = num_regions;
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134 flash_info.start = (void *)CYGNUM_FLASH_BASE;
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135 flash_info.end = (void *)(CYGNUM_FLASH_BASE +
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136 (num_regions*region_size*CYGNUM_FLASH_DEVICES));
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137 #ifdef CYGNUM_FLASH_BASE_MASK
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138 // Then this gives us a maximum size for the (visible) device.
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139 // This is to cope with oversize devices fitted, with some high
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140 // address lines ignored.
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141 if ( ((unsigned int)flash_info.start & CYGNUM_FLASH_BASE_MASK) !=
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142 (((unsigned int)flash_info.end - 1) & CYGNUM_FLASH_BASE_MASK ) ) {
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143 // then the size of the device appears to span >1 device-worth!
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144 unsigned int x;
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145 x = (~(CYGNUM_FLASH_BASE_MASK)) + 1; // expected device size
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146 x += (unsigned int)flash_info.start;
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147 if ( x < (unsigned int)flash_info.end ) { // 2nd sanity check
162
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148 (*flash_info.pf)("\nFLASH: Oversized device! End addr %p changed to %p\n",
161
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149 flash_info.end, (void *)x );
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150 flash_info.end = (void *)x;
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151 }
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152 }
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153 #endif // CYGNUM_FLASH_BASE_MASK
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154
156
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155 return FLASH_ERR_OK;
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156 }
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157 flash_type_unknown:
162
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158 (*flash_info.pf)("Can't identify FLASH, sorry, man %x, dev %x, id [%4s] stat %x\n",
156
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159 qp->manuf_code, qp->device_code, qp->id, stat );
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160 diag_dump_buf(qp, sizeof(data));
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161 return FLASH_ERR_HWR;
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162 }
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163
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164 // Map a hardware status to a package error
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165 int
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166 flash_hwr_map_error(int err)
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167 {
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168 if (err & FLASH_ErrorMask) {
162
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169 (*flash_info.pf)("Err = %x\n", err);
156
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170 if (err & FLASH_ErrorProgram)
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171 return FLASH_ERR_PROGRAM;
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172 else if (err & FLASH_ErrorErase)
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173 return FLASH_ERR_ERASE;
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174 else
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175 return FLASH_ERR_HWR; // FIXME
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176 } else {
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177 return FLASH_ERR_OK;
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178 }
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179 }
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180
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181 // See if a range of FLASH addresses overlaps currently running code
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182 bool
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183 flash_code_overlaps(void *start, void *end)
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184 {
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185 extern char _stext[], _etext[];
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186
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187 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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188 ((unsigned long)&_stext < (unsigned long)end)) ||
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189 (((unsigned long)&_etext >= (unsigned long)start) &&
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190 ((unsigned long)&_etext < (unsigned long)end)));
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191 }
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192
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193 // EOF strata.c