Mercurial > flash_v2

annotate packages/devs/flash/intel/strata/current/src/strata.c @ 210:d2c90368aeef

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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children 46540206b407
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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 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
208
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): gthomas, hmt
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44 // Contributors: gthomas
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45 // Date: 2001-02-14
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46 // Purpose:
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47 // Description:
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //==========================================================================
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52
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53 #include <pkgconf/system.h>
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54 #include <pkgconf/hal.h>
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55 #include <cyg/hal/hal_arch.h>
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56 #include <cyg/hal/hal_cache.h>
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57
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58 #define _FLASH_PRIVATE_
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59 #include <cyg/io/flash.h>
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60
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61 #include "strata.h"
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62
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63 #define _si(p) ((p[1]<<8)|p[0])
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64
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65 extern void diag_dump_buf(void *buf, CYG_ADDRWORD len);
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66
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67 extern int strncmp(const char *s1, const char *s2, size_t len);
163
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68 extern void *memcpy( void *, const void *, size_t );
156
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69
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70 int
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71 flash_hwr_init(void)
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72 {
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73 struct FLASH_query data, *qp;
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74 extern char flash_query[], flash_query_end[];
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75 typedef int code_fun(unsigned char *);
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76 code_fun *_flash_query;
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77 int code_len, stat, num_regions, region_size, buffer_size;
159
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78 int icache_on, dcache_on;
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79
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80 HAL_DCACHE_IS_ENABLED(dcache_on);
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81 HAL_ICACHE_IS_ENABLED(icache_on);
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82
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83 // Copy 'program' code to RAM for execution
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84 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query;
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85 _flash_query = (code_fun *)flash_info.work_space;
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86 memcpy(_flash_query, &flash_query, code_len);
159
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87 if (dcache_on) {
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88 HAL_DCACHE_SYNC(); // Should guarantee this code will run
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89 }
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90 if (icache_on) {
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91 HAL_ICACHE_DISABLE(); // is also required to avoid old contents
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92 }
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93
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94 stat = (*_flash_query)((unsigned char *)&data);
159
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95 if (icache_on) {
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96 HAL_ICACHE_ENABLE();
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97 }
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98
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99 qp = &data;
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100 if ( (qp->manuf_code == FLASH_Intel_code)
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101 #ifdef CYGOPT_FLASH_IS_BOOTBLOCK
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102 // device types go as follows: 0x90 for 16-bits, 0xD0 for 8-bits,
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103 // plus 0 or 1 for -T (Top Boot) or -B (Bottom Boot)
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104 // [FIXME: whatever that means :FIXME]
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105 // [I think it means the boot blocks are top/bottom of addr space]
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106 // plus the following size codes:
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107 // 0: 16Mbit 2: 8Mbit 4: 4Mbit
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108 // 6: 32Mbit 8: 64Mbit
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109 #if 16 == CYGNUM_FLASH_WIDTH
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110 && (0x90 == (0xF0 & qp->device_code)) // 16-bit devices
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111 #elif 8 == CYGNUM_FLASH_WIDTH
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112 && (0xD0 == (0xF0 & qp->device_code)) // 8-bit devices
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113 #else
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114 && 0
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115 #error Only understand 16 and 8-bit bootblock flash types
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116 #endif
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117 ) {
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118 int lookup[] = { 16, 8, 4, 32, 64 };
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119 #define BLOCKSIZE (0x10000)
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120 region_size = BLOCKSIZE;
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121 num_regions = qp->device_code & 0x0F;
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122 num_regions >>= 1;
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123 if ( num_regions > 4 )
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124 goto flash_type_unknown;
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125 num_regions = lookup[num_regions];
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126 num_regions *= 1024 * 1024; // to bits
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127 num_regions /= 8; // to bytes
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128 num_regions /= BLOCKSIZE; // to blocks
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129 buffer_size = 0;
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130 #else // CYGOPT_FLASH_IS_BOOTBLOCK
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131 && (strncmp(qp->id, "QRY", 3) == 0)) {
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132 num_regions = _si(qp->num_regions)+1;
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133 region_size = _si(qp->region_size)*256;
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134 if (_si(qp->buffer_size)) {
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135 buffer_size = CYGNUM_FLASH_DEVICES << _si(qp->buffer_size);
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136 } else {
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137 buffer_size = 0;
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138 }
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139 #endif // Not CYGOPT_FLASH_IS_BOOTBLOCK
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140
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141 flash_info.block_size = region_size*CYGNUM_FLASH_DEVICES;
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142 flash_info.buffer_size = buffer_size;
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143 flash_info.blocks = num_regions;
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144 flash_info.start = (void *)CYGNUM_FLASH_BASE;
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145 flash_info.end = (void *)(CYGNUM_FLASH_BASE +
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146 (num_regions*region_size*CYGNUM_FLASH_DEVICES));
161
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147 #ifdef CYGNUM_FLASH_BASE_MASK
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148 // Then this gives us a maximum size for the (visible) device.
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149 // This is to cope with oversize devices fitted, with some high
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150 // address lines ignored.
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151 if ( ((unsigned int)flash_info.start & CYGNUM_FLASH_BASE_MASK) !=
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152 (((unsigned int)flash_info.end - 1) & CYGNUM_FLASH_BASE_MASK ) ) {
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153 // then the size of the device appears to span >1 device-worth!
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154 unsigned int x;
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155 x = (~(CYGNUM_FLASH_BASE_MASK)) + 1; // expected device size
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156 x += (unsigned int)flash_info.start;
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157 if ( x < (unsigned int)flash_info.end ) { // 2nd sanity check
162
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158 (*flash_info.pf)("\nFLASH: Oversized device! End addr %p changed to %p\n",
161
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159 flash_info.end, (void *)x );
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160 flash_info.end = (void *)x;
163
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161 // Also adjust the block count else unlock crashes!
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162 x = ((cyg_uint8 *)flash_info.end - (cyg_uint8 *)flash_info.start)
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163 / flash_info.block_size;
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164 flash_info.blocks = x;
161
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165 }
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166 }
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167 #endif // CYGNUM_FLASH_BASE_MASK
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168
156
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169 return FLASH_ERR_OK;
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170 }
208
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171 #ifdef CYGOPT_FLASH_IS_BOOTBLOCK
156
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172 flash_type_unknown:
208
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173 #endif
162
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174 (*flash_info.pf)("Can't identify FLASH, sorry, man %x, dev %x, id [%4s] stat %x\n",
156
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175 qp->manuf_code, qp->device_code, qp->id, stat );
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176 diag_dump_buf(qp, sizeof(data));
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177 return FLASH_ERR_HWR;
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178 }
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179
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180 // Map a hardware status to a package error
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181 int
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182 flash_hwr_map_error(int err)
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183 {
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184 if (err & FLASH_ErrorMask) {
162
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185 (*flash_info.pf)("Err = %x\n", err);
156
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186 if (err & FLASH_ErrorProgram)
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187 return FLASH_ERR_PROGRAM;
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188 else if (err & FLASH_ErrorErase)
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189 return FLASH_ERR_ERASE;
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190 else
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191 return FLASH_ERR_HWR; // FIXME
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192 } else {
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193 return FLASH_ERR_OK;
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194 }
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195 }
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196
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197 // See if a range of FLASH addresses overlaps currently running code
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198 bool
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199 flash_code_overlaps(void *start, void *end)
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200 {
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201 extern char _stext[], _etext[];
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202
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203 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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204 ((unsigned long)&_stext < (unsigned long)end)) ||
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205 (((unsigned long)&_etext >= (unsigned long)start) &&
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206 ((unsigned long)&_etext < (unsigned long)end)));
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207 }
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208
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209 // EOF strata.c