1 /**
2 * \ingroup <FILEGROUP>
3 *
4 * \file BlowFuseFram.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 //! \todo implementation & rename to jtag access protection
62 #if defined(MSP430_UIF) || defined(MSP_FET)
HAL_FUNCTION(_hal_BlowFuseFram)63 HAL_FUNCTION(_hal_BlowFuseFram)
64 {
65 short ret_value = 0;
66 unsigned short lockKey[2] = {0x5555,0x5555};
67
68 // Write password into device
69 WriteMemWordXv2(0xFF80,lockKey[0]);
70 WriteMemWordXv2(0xFF82,lockKey[1]);
71
72 // now perform a BOR via JTAG - we loose control of the device then...
73 test_reg();
74 SetReg_32Bits(0x00000200);
75
76 return ret_value;
77 }
78 #endif
79
80 #ifdef eZ_FET
HAL_FUNCTION(_hal_BlowFuseFram)81 HAL_FUNCTION(_hal_BlowFuseFram)
82 {
83 // fuseblow is not supported on eZ-FET
84 return API_CALL_NOT_SUPPORTED;
85 }
86 #endif
87