FreeCalypso > hg > freecalypso-tools
annotate target-utils/libload/intelflash.c @ 649:141372e0d28f
fc-loadtool module refactoring: tpinterfb.c split out
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 02 Mar 2020 02:45:35 +0000 |
parents | e7502631a0f9 |
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rev | line source |
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0
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1 /* |
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2 * This module implements the INFB and INFW commands for programming |
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3 * Intel-style flash memories. The syntax and operation are exactly |
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4 * the same as the AMD flash counterparts AMFB and AMFW. |
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5 * |
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6 * The intel-rewrite-sector command (erase+program with a minimum of |
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7 * vulnerability for brickable-boot Compal phones) is implemented |
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8 * here as well. |
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9 */ |
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10 |
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11 #include <sys/types.h> |
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12 #include "types.h" |
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13 |
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14 static u32 base_addr; |
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15 |
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16 void |
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17 cmd_INFB(argbulk) |
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18 char *argbulk; |
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19 { |
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20 char *argv[2]; |
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21 u_long addr; |
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22 |
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23 if (parse_args(argbulk, 1, 1, argv, 0) < 0) |
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24 return; |
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25 if (parse_hexarg(argv[0], 8, &addr) < 0) { |
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26 printf("ERROR: argument must be a valid 32-bit hex address\n"); |
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27 return; |
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28 } |
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29 if (addr & 1) { |
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30 printf("ERROR: odd address\n"); |
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31 return; |
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32 } |
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33 base_addr = addr; |
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34 } |
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35 |
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36 void |
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37 cmd_INFW(argbulk) |
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38 char *argbulk; |
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39 { |
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40 char *argv[3], *s; |
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41 u_long offset; |
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42 volatile u16 *flashptr; |
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43 u32 datum; /* needs to be u32 for decode_hex_digits() */ |
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44 u16 stat; |
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45 int i; |
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46 |
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47 if (parse_args(argbulk, 2, 2, argv, 0) < 0) |
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48 return; |
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49 if (parse_hexarg(argv[0], 8, &offset) < 0) { |
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50 printf("ERROR: offset argument must a valid 32-bit hex value\n"); |
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51 return; |
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52 } |
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53 if (offset & 1) { |
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54 printf("ERROR: odd offset argument\n"); |
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55 return; |
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56 } |
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57 flashptr = (volatile u16 *)(base_addr + offset); |
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58 for (s = argv[1]; *s; flashptr++, s += 4) { |
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59 if (decode_hex_digits(s, 4, &datum) < 0) { |
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60 printf("ERROR: bad INFW hex string argument\n"); |
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61 return; |
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62 } |
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63 *flashptr = 0x40; |
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64 *flashptr = datum; |
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65 for (i = 10000; i; i--) { |
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66 stat = *flashptr; |
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67 if (stat & 0x80) |
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68 break; |
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69 } |
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70 if (!i) { |
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71 printf("ERROR: flash write timeout at %08X\n", |
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72 (u_long) flashptr); |
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73 return; |
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74 } |
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75 if (stat & 0x10) { |
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76 printf("ERROR: program operation failed at %08X\n", |
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77 (u_long) flashptr); |
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78 return; |
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79 } |
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80 } |
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81 } |
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82 |
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83 void |
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84 cmd_intel_rewrite_sector(argbulk) |
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85 char *argbulk; |
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86 { |
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87 char *argv[4]; |
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88 u_long srcaddr, dstaddr, len; |
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89 const u16 *srcptr; |
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90 volatile u16 *flashptr; |
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91 u16 stat; |
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92 |
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93 if (parse_args(argbulk, 3, 3, argv, 0) < 0) |
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94 return; |
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95 if (parse_hexarg(argv[0], 8, &srcaddr) < 0) { |
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96 invarg: printf("ERROR: invalid argument(s)\n"); |
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97 return; |
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98 } |
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99 if (parse_hexarg(argv[1], 8, &dstaddr) < 0) |
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100 goto invarg; |
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101 if (parse_hexarg(argv[2], 8, &len) < 0) |
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102 goto invarg; |
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103 if (srcaddr & 1 || dstaddr & 1 || len & 1) { |
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104 printf("ERROR: all 3 arguments must be even\n"); |
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105 return; |
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106 } |
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107 srcptr = (const u16 *) srcaddr; |
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108 flashptr = (volatile u16 *) dstaddr; |
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109 /* unlock the flash sector first */ |
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110 *flashptr = 0x60; |
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111 *flashptr = 0xD0; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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112 /* clear SR */ |
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113 *flashptr = 0x50; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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114 /* erase */ |
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parents:
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115 *flashptr = 0x20; |
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116 *flashptr = 0xD0; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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117 /* wait for erase completion */ |
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Mychaela Falconia <falcon@freecalypso.org>
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118 for (;;) { |
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119 stat = *flashptr; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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120 if (stat & 0x80) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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121 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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122 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 if (stat & 0x30) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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124 printf("ERROR: erase operation failed!\n"); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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125 return; |
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parents:
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126 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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127 /* now program the new content */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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128 for (; len; len -= 2) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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129 *flashptr = 0x40; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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130 *flashptr = *srcptr++; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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131 for (;;) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 stat = *flashptr; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
133 if (stat & 0x80) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
134 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
135 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
136 flashptr++; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
137 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
138 printf("Operation complete, final SR: %02X\n", stat & 0xFF); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
139 } |