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annotate lcdtest/memops.c @ 176:fb2f6497ba53 default tip

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doc/Linux-DTR-RTS-flaw: point to new location of this article
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Dec 2023 19:37:20 +0000
parents de3d3cfcbb35
children
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28
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1 /*
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2 * Functions for ETM memory read requests
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <rvinterf/etm.h>
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11 #include <rvinterf/limits.h>
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12 #include <rvinterf/localtypes.h>
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13 #include "exitcodes.h"
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14
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15 #ifndef MAX_MEMREAD_BYTES
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16 #define MAX_MEMREAD_BYTES 238
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17 #endif
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18
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19 #ifndef MAX_MEMREAD_16BIT
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20 #define MAX_MEMREAD_16BIT 119
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21 #endif
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22
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23 #ifndef MAX_MEMREAD_32BIT
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24 #define MAX_MEMREAD_32BIT 59
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25 #endif
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26
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27 extern u_char rvi_msg[];
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28 extern int rvi_msg_len;
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29
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30 do_memory_read(memaddr, databuf, nbytes)
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31 u32 memaddr;
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32 u_char *databuf;
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33 {
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34 u_char cmdpkt[10];
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35 int rc;
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36
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37 if (nbytes > MAX_MEMREAD_BYTES) {
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38 printf("error: # of bytes to read may not exceed %d\n",
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39 MAX_MEMREAD_BYTES);
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40 return(ERROR_USAGE);
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41 }
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42 cmdpkt[1] = ETM_CORE;
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43 cmdpkt[2] = TMCORE_OPC_MEM;
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44 cmdpkt[3] = 0x01;
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45 cmdpkt[4] = nbytes;
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46 cmdpkt[5] = memaddr;
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47 cmdpkt[6] = memaddr >> 8;
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48 cmdpkt[7] = memaddr >> 16;
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49 cmdpkt[8] = memaddr >> 24;
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50 rc = etm_pkt_exch(cmdpkt, 8);
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51 if (rc)
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52 return(rc);
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53 if (rvi_msg[3]) {
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54 printf("ETM error response to mem read request: 0x%02X\n",
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55 rvi_msg[3]);
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56 return(ERROR_TARGET);
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57 }
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58 if (rvi_msg_len != nbytes + 7) {
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59 printf("error: mem read response has wrong length\n");
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60 return(ERROR_TARGET);
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61 }
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62 if (rvi_msg[4] != TMCORE_OPC_MEM || rvi_msg[5] != 0x01) {
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63 printf("error: mem read response has wrong opcode\n");
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64 return(ERROR_TARGET);
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65 }
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66 bcopy(rvi_msg + 6, databuf, nbytes);
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67 return(0);
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68 }
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69
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70 do_memory_read_16(memaddr, databuf, nwords)
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71 u32 memaddr;
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72 u_char *databuf;
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73 {
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74 u_char cmdpkt[10];
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75 int rc;
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76
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77 if (nwords > MAX_MEMREAD_16BIT) {
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78 printf("error: # of 16-bit words to read may not exceed %d\n",
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79 MAX_MEMREAD_16BIT);
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80 return(ERROR_USAGE);
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81 }
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82 cmdpkt[1] = ETM_CORE;
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83 cmdpkt[2] = TMCORE_OPC_MEM;
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84 cmdpkt[3] = 0x02;
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85 cmdpkt[4] = nwords;
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86 cmdpkt[5] = memaddr;
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87 cmdpkt[6] = memaddr >> 8;
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88 cmdpkt[7] = memaddr >> 16;
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89 cmdpkt[8] = memaddr >> 24;
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90 rc = etm_pkt_exch(cmdpkt, 8);
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91 if (rc)
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92 return(rc);
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93 if (rvi_msg[3]) {
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94 printf("ETM error response to mem read 16 request: 0x%02X\n",
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95 rvi_msg[3]);
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96 return(ERROR_TARGET);
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97 }
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98 if (rvi_msg_len != nwords * 2 + 7) {
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99 printf("error: mem read 16 response has wrong length\n");
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100 return(ERROR_TARGET);
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101 }
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102 if (rvi_msg[4] != TMCORE_OPC_MEM || rvi_msg[5] != 0x02) {
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103 printf("error: mem read 16 response has wrong opcode\n");
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104 return(ERROR_TARGET);
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105 }
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106 bcopy(rvi_msg + 6, databuf, nwords * 2);
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107 return(0);
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108 }
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109
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110 do_memory_read_32(memaddr, databuf, nwords)
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111 u32 memaddr;
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112 u_char *databuf;
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113 {
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114 u_char cmdpkt[10];
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115 int rc;
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116
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117 if (nwords > MAX_MEMREAD_32BIT) {
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118 printf("error: # of 32-bit words to read may not exceed %d\n",
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119 MAX_MEMREAD_32BIT);
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120 return(ERROR_USAGE);
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121 }
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122 cmdpkt[1] = ETM_CORE;
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123 cmdpkt[2] = TMCORE_OPC_MEM;
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124 cmdpkt[3] = 0x04;
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125 cmdpkt[4] = nwords;
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126 cmdpkt[5] = memaddr;
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127 cmdpkt[6] = memaddr >> 8;
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128 cmdpkt[7] = memaddr >> 16;
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129 cmdpkt[8] = memaddr >> 24;
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
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130 rc = etm_pkt_exch(cmdpkt, 8);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
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131 if (rc)
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
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132 return(rc);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
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133 if (rvi_msg[3]) {
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
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134 printf("ETM error response to mem read 32 request: 0x%02X\n",
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
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parents:
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135 rvi_msg[3]);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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136 return(ERROR_TARGET);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 }
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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138 if (rvi_msg_len != nwords * 4 + 7) {
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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139 printf("error: mem read 32 response has wrong length\n");
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
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140 return(ERROR_TARGET);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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141 }
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
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142 if (rvi_msg[4] != TMCORE_OPC_MEM || rvi_msg[5] != 0x04 && rvi_msg[5]) {
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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143 printf("error: mem read 32 response has wrong opcode\n");
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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144 return(ERROR_TARGET);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 }
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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146 bcopy(rvi_msg + 6, databuf, nwords * 4);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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147 return(0);
de3d3cfcbb35 lcdtest: lcdphone program put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
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148 }