1 /**
2 * \ingroup <FILEGROUP>
3 *
4 * \file BlowFuseXv2.c
5 *
6 * \brief Blow JTAG security fuse
7 *
8 */
9 /*
10 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
11 *
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the
23 * distribution.
24 *
25 * Neither the name of Texas Instruments Incorporated nor the names of
26 * its contributors may be used to endorse or promote products derived
27 * from this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 */
41
42 #include "arch.h"
43 #include "edt.h"
44 #include "hal.h"
45 #include "stream.h"
46 #include "hal_ref.h"
47 #include "error_def.h"
48 #ifdef DB_PRINT
49 #include "debug.h"
50 #endif
51
52 /**
53 BlowFuse
54 Blow JTAG security fuse.
55 After calling this function JTAG access is not possible anymore.
56 inData: <tgtHasTest(8)>
57 outData: -
58 tgtHasTest: specifies if target device has TEST pin or not (bool)
59 */
60
61 extern unsigned long JTAGLock5xx;
62
63 //! \todo implementation & rename to jtag access protection
64 #if defined(MSP430_UIF) || defined(MSP_FET)
HAL_FUNCTION(_hal_BlowFuseXv2)65 HAL_FUNCTION(_hal_BlowFuseXv2)
66 {
67 short ret_value = 0;
68 short bslValue = 0;
69 StreamSafe stream_tmp;
70 unsigned char stream_in_tmp[26];
71 unsigned short i =0;
72
73 WriteMemWordXv2(0x182, 0x0003);
74 bslValue = ReadMemWordXv2(0x182);
75
76 if( (bslValue & 0x8000) == 0 )
77 {
78 // Coppy incoming stream to forward it to HAL_ExecuteFuncletXv2
79 for(i=0;i<(sizeof(stream_in_tmp) - 4);i++)
80 {
81 STREAM_get_byte(&stream_in_tmp[i]);
82 }
83 // add Password to stream
84 stream_in_tmp[i] = (unsigned char) (JTAGLock5xx & 0xFF);
85 stream_in_tmp[i+1] = (unsigned char) ((JTAGLock5xx >> 8) & 0xFF);
86 stream_in_tmp[i+2] = (unsigned char) ((JTAGLock5xx >> 16) & 0xFF);
87 stream_in_tmp[i+3] = (unsigned char) ((JTAGLock5xx >> 24) & 0xFF);
88
89 // Write password into device
90 STREAM_internal_stream(stream_in_tmp, sizeof(stream_in_tmp), MESSAGE_OUT_TO_DLL, 0, &stream_tmp);
91 HAL_ExecuteFuncletXv2(MESSAGE_NEW_MSG | MESSAGE_LAST_MSG); // Data from DLL Stream
92 STREAM_external_stream(&stream_tmp);
93
94 // now perform a BOR via JTAG - we loose control of the device then...
95 test_reg();
96 SetReg_32Bits(0x00000200);
97 }
98 else
99 {
100 ret_value = HALERR_UNDEFINED_ERROR;
101 }
102 return ret_value;
103 }
104 #endif
105
106 #ifdef eZ_FET
HAL_FUNCTION(_hal_BlowFuseXv2)107 HAL_FUNCTION(_hal_BlowFuseXv2)
108 {
109 // fuseblow is not supported on eZ-FET
110 return API_CALL_NOT_SUPPORTED;
111 }
112 #endif
113