Mercurial > flash_v2

annotate packages/devs/flash/intel/bootblock/current/src/bootblock_flash.c @ 136:a9ac27ec7abc ecos-sw-2000-11-17

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Merge from eCos master repository on 2000-11-17-18:24:25-GMT
author jlarmour
date Fri, 17 Nov 2000 23:16:43 +0000
parents
children 289bf90c6a9b
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136
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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
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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*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 flash_info.start = (void *)0;//0x10000000 FIXME;
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99 flash_info.end = (void *)(0x10000000+(num_regions*region_size));
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100 return FLASH_ERR_OK;
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101 }
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102
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103 // Map a hardware status to a package error
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104 int
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105 flash_hwr_map_error(int err)
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106 {
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107 if (err & 0x007E007E) {
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108 printf("Err = %x\n", err);
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109 if (err & 0x00400040) {
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110 return FLASH_ERR_ERASE_SUSPEND;
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111 } else
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112 if (err & 0x00040004) {
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113 return FLASH_ERR_PROGRAM_SUSPEND;
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114 } else
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115 if (err & 0x00020002) {
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116 return FLASH_ERR_PROTECT;
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117 } else
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118 if (err & 0x00100010) {
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119 return FLASH_ERR_PROGRAM;
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120 } else
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121 if (err & 0x00200020) {
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122 return FLASH_ERR_ERASE;
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123 } else
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124 return FLASH_ERR_HWR; // FIXME
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125 } else {
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126 return FLASH_ERR_OK;
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127 }
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128 }
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129
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130 // See if a range of FLASH addresses overlaps currently running code
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131 bool
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132 flash_code_overlaps(void *start, void *end)
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133 {
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134 extern char _stext, _etext;
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135
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136 return ((((unsigned long)&_stext >= (unsigned long)start) &&
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137 ((unsigned long)&_stext < (unsigned long)end)) ||
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138 (((unsigned long)&_etext >= (unsigned long)start) &&
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139 ((unsigned long)&_etext < (unsigned long)end)));
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140 }