FreeCalypso > hg > fc-magnetite
annotate src/cs/riviera/support/exception.c @ 629:3231dd9b38c1
armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets
Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively,
and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code
for C-Sample and earlier turns them into GPIOs configured as outputs also
driving 1 - so far, so good - but TI's code for BOARD 41 (which covers
D-Sample, Leonardo and all real world Calypso devices derived from the
latter) switches them from MCUEN to GPIOs, but then leaves them as inputs.
Given that the hardware powerup state of these two pins is outputs driving 1,
every Calypso board design MUST be compatible with such driving; typically
these GPIO signals will be either unused and unconnected or connected as
outputs driving some peripheral. Turning these pins into GPIO inputs will
result in floating inputs on every reasonably-wired board, thus I am
convinced that this configuration is nothing but a bug on the part of
whoever wrote this code at TI.
This floating input bug had already been fixed earlier for GTA modem and
FCDEV3B targets; the present change makes the fix unconditional for all
"classic" targets. The newly affected targets are D-Sample, Leonardo,
Tango and GTM900.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 02 Jan 2020 05:38:26 +0000 |
parents | 945cf7f506b2 |
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1 /* |
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2 ****************************** |
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3 * |
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4 * |
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5 * Initialial version: Laurent Deniau, Laurent.Deniau@cern.ch |
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6 * |
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7 * For more information, please see the paper: |
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8 * http://cern.ch/Laurent.Deniau/html/oopc/exception.html |
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9 * |
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10 * ----------------------------------------------------------- |
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11 * |
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12 * Strong rework and adaption to riviera by Christophe Favergeon |
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13 * |
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14 ****************************** |
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15 */ |
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16 |
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17 // Authorization to use this source code communicated to Christophe Favergeon |
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18 // by email |
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19 |
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20 #include <stdio.h> |
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21 #include <stdlib.h> |
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22 #include <assert.h> |
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23 #include "support/exception.h" |
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24 |
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25 #ifndef _WINDOWS |
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26 #include "config/swconfig.cfg" |
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27 #endif |
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28 |
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29 |
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30 /* global stack of exception context */ |
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31 struct _exceptionContext_ *const _returnExceptionContext_[MAX_RVF_TASKS]= |
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32 #if (!GSMLITE) |
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33 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, |
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34 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
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35 #else |
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36 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
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37 #endif |
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38 |
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39 struct _exceptionContext_ *_currentExceptionContext_ [MAX_RVF_TASKS]= |
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40 #if (!GSMLITE) |
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41 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL, |
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42 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
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43 #else |
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44 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}; |
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45 #endif |
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46 |
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47 /* delete protected pointers and throw exception */ |
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48 void |
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49 _exceptionThrow_(int exception) |
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50 { |
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51 struct _protectedPtr_ *p; |
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52 struct _protectedPtr_ *oldp; |
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53 |
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54 /* no exception context saved, exit program */ |
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55 if (!_currentExceptionContext_[rvf_get_taskid()]) exit(exception); |
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56 |
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57 /* free pointers stored on the current exception context pointers stack */ |
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58 p=_currentExceptionContext_[rvf_get_taskid()]->stack; |
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59 |
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60 while(p) |
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61 { |
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62 oldp=p->previous; |
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63 p->func(p->ptr); |
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64 rvf_free_buf(p); |
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65 p=oldp; |
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66 } |
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67 |
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68 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL; |
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69 |
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70 /* jump to previous exception context */ |
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71 rvf_restore_context_buffer_(_currentExceptionContext_[rvf_get_taskid()]->context, exception); |
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72 } |
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73 |
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74 |
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75 // Protect a pointer when there is a try/ctahc block active |
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76 void rvf_protect_pointer(T_RVF_MB_ID mb_id,void *p,T_RVF_RELEASE_PROTECTED_POINTER func) |
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77 { |
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78 |
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79 struct _protectedPtr_ *ptr; |
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80 struct _exceptionContext_ *context; |
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81 T_RVF_MB_STATUS err; |
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82 |
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83 |
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84 |
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85 if (_currentExceptionContext_[rvf_get_taskid()]) |
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86 { |
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87 |
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88 if (p==NULL) |
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89 throw(E_not_enough_memory); |
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90 |
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91 context=_currentExceptionContext_[rvf_get_taskid()]; |
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92 err=rvf_get_buf(mb_id,sizeof(struct _protectedPtr_),(void*)&ptr); |
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93 |
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94 |
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95 if (err==RVF_GREEN) |
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96 { |
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97 ptr->next=NULL; |
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98 ptr->previous=NULL; |
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99 ptr->ptr=p; |
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100 ptr->func=func; |
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101 |
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102 if (context->stack==NULL) |
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103 { |
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104 context->stack=ptr; |
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105 } |
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106 else |
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107 { |
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108 ptr->previous=context->stack; |
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109 context->stack->next=ptr; |
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110 context->stack=ptr; |
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111 } |
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112 } |
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113 else |
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114 { |
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115 if (p!=NULL) |
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116 rvf_free_buf(p); |
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117 throw(E_not_enough_memory); |
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118 } |
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119 } |
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120 } |
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121 |
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122 void rvf_forget_protected_ptr() |
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123 { |
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124 struct _protectedPtr_ *p; |
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125 struct _protectedPtr_ *oldp; |
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126 |
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127 p=_currentExceptionContext_[rvf_get_taskid()]->stack; |
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128 |
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129 while(p) |
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130 { |
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131 oldp=p->previous; |
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132 rvf_free_buf(p); |
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133 p=oldp; |
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134 } |
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135 |
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136 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL; |
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137 } |
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138 |
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139 |
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140 |