FreeCalypso > hg > freecalypso-tools

annotate rvinterf/etmsync/memops.c @ 407:19e5a3e2f9c0

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fcup-settime: moved time() retrieval a little closer to the output A fundamental problem with all simple time transfer tools is that there is always some delay between the time retrieval on the source system and that transmitted time being set on the destination, and the resulting time on the destination system is off by that delay amount. This delay cannot be fully eliminated when working in a simple environment like ours, but we should make our best effort to minimize it. In the present case, moving the atinterf_init() call before the time() retrieval should make a teensy-tiny improvement.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Aug 2018 21:52:17 +0000
parents e7502631a0f9
children
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1 /*
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2 * Functions for reading memory regions and Calypso die ID via ETM
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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 "etm.h"
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11 #include "tm3.h"
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12 #include "limits.h"
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13 #include "localtypes.h"
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14 #include "exitcodes.h"
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15
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16 extern u_char rvi_msg[];
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17 extern int rvi_msg_len;
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18
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19 do_memory_read(memaddr, databuf, nbytes)
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20 u32 memaddr;
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21 u_char *databuf;
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22 {
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23 u_char cmdpkt[10];
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24 int rc;
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25
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26 if (nbytes > MAX_MEMREAD_BYTES) {
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27 printf("error: # of bytes to read may not exceed %d\n",
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28 MAX_MEMREAD_BYTES);
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29 return(ERROR_USAGE);
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30 }
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31 cmdpkt[1] = ETM_CORE;
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32 cmdpkt[2] = TMCORE_OPC_MEM;
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33 cmdpkt[3] = 0x01;
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34 cmdpkt[4] = nbytes;
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35 cmdpkt[5] = memaddr;
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36 cmdpkt[6] = memaddr >> 8;
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37 cmdpkt[7] = memaddr >> 16;
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38 cmdpkt[8] = memaddr >> 24;
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Mychaela Falconia <falcon@freecalypso.org>
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39 rc = etm_pkt_exch(cmdpkt, 8);
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40 if (rc)
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41 return(rc);
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42 if (rvi_msg[3]) {
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43 printf("ETM error response to mem read request: 0x%02X\n",
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44 rvi_msg[3]);
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45 return(ERROR_TARGET);
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46 }
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47 if (rvi_msg_len != nbytes + 7) {
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48 printf("error: mem read response has wrong length\n");
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49 return(ERROR_TARGET);
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50 }
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51 if (rvi_msg[4] != TMCORE_OPC_MEM || rvi_msg[5] != 0x01) {
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52 printf("error: mem read response has wrong opcode\n");
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53 return(ERROR_TARGET);
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54 }
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55 bcopy(rvi_msg + 6, databuf, nbytes);
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56 return(0);
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57 }
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58
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59 do_memory_read_16(memaddr, databuf, nwords)
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60 u32 memaddr;
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61 u_char *databuf;
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62 {
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63 u_char cmdpkt[10];
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64 int rc;
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65
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66 if (nwords > MAX_MEMREAD_16BIT) {
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67 printf("error: # of 16-bit words to read may not exceed %d\n",
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68 MAX_MEMREAD_16BIT);
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69 return(ERROR_USAGE);
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70 }
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71 cmdpkt[1] = ETM_CORE;
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72 cmdpkt[2] = TMCORE_OPC_MEM;
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73 cmdpkt[3] = 0x02;
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74 cmdpkt[4] = nwords;
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75 cmdpkt[5] = memaddr;
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76 cmdpkt[6] = memaddr >> 8;
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77 cmdpkt[7] = memaddr >> 16;
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78 cmdpkt[8] = memaddr >> 24;
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79 rc = etm_pkt_exch(cmdpkt, 8);
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80 if (rc)
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81 return(rc);
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82 if (rvi_msg[3]) {
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83 printf("ETM error response to mem read 16 request: 0x%02X\n",
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84 rvi_msg[3]);
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85 return(ERROR_TARGET);
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86 }
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87 if (rvi_msg_len != nwords * 2 + 7) {
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88 printf("error: mem read 16 response has wrong length\n");
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89 return(ERROR_TARGET);
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90 }
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91 if (rvi_msg[4] != TMCORE_OPC_MEM || rvi_msg[5] != 0x02) {
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92 printf("error: mem read 16 response has wrong opcode\n");
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93 return(ERROR_TARGET);
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94 }
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95 bcopy(rvi_msg + 6, databuf, nwords * 2);
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96 return(0);
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97 }
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98
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99 do_memory_read_tm3(memaddr, databuf, nbytes)
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Mychaela Falconia <falcon@freecalypso.org>
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100 u32 memaddr;
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Mychaela Falconia <falcon@freecalypso.org>
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101 u_char *databuf;
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102 {
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103 u_char cmdpkt[11];
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Mychaela Falconia <falcon@freecalypso.org>
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104 int rc;
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Mychaela Falconia <falcon@freecalypso.org>
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105
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106 if (nbytes > TM3_MEMREAD_MAX) {
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Mychaela Falconia <falcon@freecalypso.org>
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107 printf("error: # of bytes to read may not exceed %d\n",
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108 TM3_MEMREAD_MAX);
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109 return(ERROR_USAGE);
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110 }
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Mychaela Falconia <falcon@freecalypso.org>
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111 cmdpkt[1] = MEM_READ;
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112 cmdpkt[2] = memaddr;
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Mychaela Falconia <falcon@freecalypso.org>
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113 cmdpkt[3] = memaddr >> 8;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 cmdpkt[4] = memaddr >> 16;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 cmdpkt[5] = memaddr >> 24;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 cmdpkt[6] = nbytes;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 cmdpkt[7] = 0;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 cmdpkt[8] = 0;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 cmdpkt[9] = 0;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 rc = etm_pkt_exch(cmdpkt, 9);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 if (rc)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 return(rc);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 if (rvi_msg[3]) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 printf("TM3 error response to mem read request: 0x%02X\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 rvi_msg[3]);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 if (rvi_msg_len != nbytes + 9) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 printf("error: mem read response has wrong length\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 if (rvi_msg[4] != nbytes || rvi_msg[5] || rvi_msg[6] || rvi_msg[7]) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 printf("error: mem read response has wrong length echo\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 bcopy(rvi_msg + 8, databuf, nbytes);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 do_dieid_read(databuf)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 u_char *databuf;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 u_char cmdpkt[4];
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 int rc;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 cmdpkt[1] = ETM_CORE;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 cmdpkt[2] = TMCORE_OPC_DIEID;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 rc = etm_pkt_exch(cmdpkt, 2);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 if (rc)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 return(rc);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 if (rvi_msg[3]) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 printf("ETM error response to die ID read request: 0x%02X\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 rvi_msg[3]);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 if (rvi_msg_len != 14) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 printf("error: die ID read response has wrong length\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 if (rvi_msg[4] != TMCORE_OPC_DIEID) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 printf("error: die ID read response has wrong opcode\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 bcopy(rvi_msg + 5, databuf, 8);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 }