Mercurial > nand-ecoscentric
annotate packages/devs/flash/intel/bootblock/current/src/bootblock_flash.c @ 143:6b5f480c6929 ecos-sw-2000-12-08
Merge from eCos master repository on 2000-12-08-02:09:36-GMT
| author | jlarmour |
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| date | Fri, 08 Dec 2000 03:30:06 +0000 |
| parents | 289bf90c6a9b |
| children | 2395031e7a66 |
| rev | line source |
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1 //========================================================================== |
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2 // |
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3 // bootblock_flash.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 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 |
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35 // Contributors: gthomas, jskov |
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36 // Date: 2000-07-26 |
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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/hal.h> |
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45 #include <cyg/hal/hal_arch.h> |
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46 #include <cyg/hal/hal_cache.h> |
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47 |
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48 #define _FLASH_PRIVATE_ |
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49 #include <cyg/io/flash.h> |
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50 |
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51 #include "flash.h" |
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52 |
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53 #define _si(p) ((p[0]<<8)|p[1]) |
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54 |
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55 #define DEBUG 0 |
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56 |
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57 int |
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58 flash_hwr_init(void) |
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59 { |
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60 unsigned short data[4]; |
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61 extern char flash_query, flash_query_end; |
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62 typedef int code_fun(unsigned char *); |
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63 code_fun *_flash_query; |
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64 int code_len, stat, num_regions, region_size; |
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65 |
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66 // Copy 'program' code to RAM for execution |
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67 code_len = (unsigned long)&flash_query_end - (unsigned long)&flash_query; |
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68 _flash_query = (code_fun *)flash_info.work_space; |
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69 memcpy(_flash_query, &flash_query, code_len); |
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70 HAL_DCACHE_SYNC(); // Should guarantee this code will run |
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71 HAL_ICACHE_INVALIDATE_ALL(); // is also required to avoid old contents |
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72 stat = (*_flash_query)(data); |
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73 #if DEBUG |
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74 printf("stat = %x\n", stat); |
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75 dump_buf(data, sizeof(data)); |
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76 #endif |
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77 |
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78 if (data[0] != FLASH_Intel_code) { |
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79 printf("Not Intel = %x\n", data[0]); |
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80 return FLASH_ERR_HWR; |
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81 } |
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82 |
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83 // FIXME: More devices, comments, etc |
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84 if (data[1] == (unsigned short)0x8897) { |
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85 num_regions = 64*2; |
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86 region_size = 0x20000; |
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87 } else if (data[1] == (unsigned short)0x88f4) { |
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88 num_regions = 32; // (only use one for now)*4; // 4 devices in serial, each having 32 regions |
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89 region_size = 0x10000; |
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90 } else { |
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91 printf("Unknown device type: %x\n", data[1]); |
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92 return FLASH_ERR_HWR; |
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93 } |
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94 |
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95 // Hard wired for now FIXME |
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96 flash_info.block_size = region_size; |
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97 flash_info.blocks = num_regions; |
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98 #if 0 // This should be used only for the gross XX firmware build |
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99 flash_info.start = (void *)0; |
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100 flash_info.end = (void *)(0x10000000+(num_regions*region_size)); |
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101 #else |
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102 flash_info.start = (void *)0x50000000; |
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103 flash_info.end = (void *)(0x50000000+(num_regions*region_size)); |
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104 #endif |
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105 |
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106 return FLASH_ERR_OK; |
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107 } |
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108 |
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109 // Map a hardware status to a package error |
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110 int |
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111 flash_hwr_map_error(int err) |
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112 { |
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113 if (err & 0x007E007E) { |
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114 printf("Err = %x\n", err); |
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115 if (err & 0x00400040) { |
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116 return FLASH_ERR_ERASE_SUSPEND; |
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117 } else |
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118 if (err & 0x00040004) { |
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119 return FLASH_ERR_PROGRAM_SUSPEND; |
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120 } else |
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121 if (err & 0x00020002) { |
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122 return FLASH_ERR_PROTECT; |
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123 } else |
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124 if (err & 0x00100010) { |
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125 return FLASH_ERR_PROGRAM; |
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126 } else |
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127 if (err & 0x00200020) { |
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128 return FLASH_ERR_ERASE; |
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129 } else |
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130 return FLASH_ERR_HWR; // FIXME |
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131 } else { |
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132 return FLASH_ERR_OK; |
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133 } |
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134 } |
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135 |
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136 // See if a range of FLASH addresses overlaps currently running code |
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137 bool |
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138 flash_code_overlaps(void *start, void *end) |
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139 { |
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143
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140 extern char _stext[], _etext[]; |
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136
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141 |
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142 return ((((unsigned long)&_stext >= (unsigned long)start) && |
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143 ((unsigned long)&_stext < (unsigned long)end)) || |
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144 (((unsigned long)&_etext >= (unsigned long)start) && |
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145 ((unsigned long)&_etext < (unsigned long)end))); |
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146 } |
