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annotate loadtools/flamdsec.c @ 977:511e2b85c115

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fc-loadtool: implement flash lock-state command
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Dec 2023 07:51:01 +0000
parents
children c5133c3c11b1
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rev   line source
977
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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2 * This module is a place to implement commands that are specific to
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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3 * security features (OTP, sector locking) of AMD-style flash chips.
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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4 */
511e2b85c115 fc-loadtool: implement flash lock-state command
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5
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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6 #include <sys/types.h>
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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7 #include <stdio.h>
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdint.h>
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h>
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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10 #include "flash.h"
511e2b85c115 fc-loadtool: implement flash lock-state command
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11
511e2b85c115 fc-loadtool: implement flash lock-state command
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12 extern struct flash_bank_info flash_bank_info[2];
511e2b85c115 fc-loadtool: implement flash lock-state command
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13
511e2b85c115 fc-loadtool: implement flash lock-state command
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14 static
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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15 issue_read_id(base_addr)
511e2b85c115 fc-loadtool: implement flash lock-state command
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16 uint32_t base_addr;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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17 {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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18 if (do_w16(base_addr + 0xAAA, 0xAA)) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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19 bad_w16: fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
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20 "unexpected response to w16 in read ID cmd sequence - aborting\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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21 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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22 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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23 if (do_w16(base_addr + 0x554, 0x55))
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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24 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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25 if (do_w16(base_addr + 0xAAA, 0x90))
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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26 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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27 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
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28 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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29
511e2b85c115 fc-loadtool: implement flash lock-state command
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30 static
511e2b85c115 fc-loadtool: implement flash lock-state command
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31 issue_reset_cmd(base_addr)
511e2b85c115 fc-loadtool: implement flash lock-state command
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32 uint32_t base_addr;
511e2b85c115 fc-loadtool: implement flash lock-state command
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33 {
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34 if (do_w16(base_addr + 0xAAA, 0xF0)) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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35 fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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36 "unexpected response to w16 when resetting flash to read mode!\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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37 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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38 }
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39 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
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40 }
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41
511e2b85c115 fc-loadtool: implement flash lock-state command
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42 static
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43 read_mode_lock_word(base_addr, word_offset, retp)
511e2b85c115 fc-loadtool: implement flash lock-state command
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44 uint32_t base_addr, word_offset;
511e2b85c115 fc-loadtool: implement flash lock-state command
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45 uint16_t *retp;
511e2b85c115 fc-loadtool: implement flash lock-state command
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46 {
511e2b85c115 fc-loadtool: implement flash lock-state command
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47 if (do_w16(base_addr + 0xAAA, 0xAA)) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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48 bad_w16: fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
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49 "unexpected response to w16 in mode lock query sequence - aborting\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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50 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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51 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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52 if (do_w16(base_addr + 0x554, 0x55))
511e2b85c115 fc-loadtool: implement flash lock-state command
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53 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
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54 if (do_w16(base_addr + 0xAAA, 0x60))
511e2b85c115 fc-loadtool: implement flash lock-state command
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55 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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56 if (do_w16(base_addr + word_offset, 0x48))
511e2b85c115 fc-loadtool: implement flash lock-state command
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57 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
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58 if (do_r16(base_addr + word_offset, retp) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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59 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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60 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
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61 }
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62
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63 static
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64 pln_special_mode_entry(base_addr, mode_opc)
511e2b85c115 fc-loadtool: implement flash lock-state command
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65 uint32_t base_addr;
511e2b85c115 fc-loadtool: implement flash lock-state command
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66 uint16_t mode_opc;
511e2b85c115 fc-loadtool: implement flash lock-state command
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67 {
511e2b85c115 fc-loadtool: implement flash lock-state command
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68 if (do_w16(base_addr + 0xAAA, 0xAA)) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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69 bad_w16: fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
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70 "unexpected response to w16 in PL-N special mode entry sequence - aborting\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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71 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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72 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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73 if (do_w16(base_addr + 0x554, 0x55))
511e2b85c115 fc-loadtool: implement flash lock-state command
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74 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
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75 if (do_w16(base_addr + 0xAAA, mode_opc))
511e2b85c115 fc-loadtool: implement flash lock-state command
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76 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
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77 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
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78 }
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79
511e2b85c115 fc-loadtool: implement flash lock-state command
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80 static
511e2b85c115 fc-loadtool: implement flash lock-state command
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81 pln_special_mode_exit(base_addr)
511e2b85c115 fc-loadtool: implement flash lock-state command
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82 uint32_t base_addr;
511e2b85c115 fc-loadtool: implement flash lock-state command
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83 {
511e2b85c115 fc-loadtool: implement flash lock-state command
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diff changeset
84 if (do_w16(base_addr, 0x90)) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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85 bad_w16: fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
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86 "unexpected response to w16 in PL-N special mode exit sequence - aborting\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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87 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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88 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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89 if (do_w16(base_addr, 0x00))
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90 goto bad_w16;
511e2b85c115 fc-loadtool: implement flash lock-state command
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91 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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92 }
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93
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94 flashcmd_lock_state(argc, argv, bank)
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95 char **argv;
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96 {
511e2b85c115 fc-loadtool: implement flash lock-state command
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97 struct flash_bank_info *bi;
511e2b85c115 fc-loadtool: implement flash lock-state command
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98 struct amd_lock_info *li;
511e2b85c115 fc-loadtool: implement flash lock-state command
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99 struct lock_group_desc *grp;
511e2b85c115 fc-loadtool: implement flash lock-state command
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100 uint32_t offset, part_addr;
511e2b85c115 fc-loadtool: implement flash lock-state command
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101 uint16_t word;
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102 unsigned ng, nb;
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103
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diff changeset
104 if (argc > 2) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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105 fprintf(stderr, "error: too many arguments\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
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106 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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107 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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108 if (flash_detect(bank, 0) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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109 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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110 bi = flash_bank_info + bank;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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111 li = bi->amd_lock;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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112 if (!li) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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113 fprintf(stderr,
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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114 "Operation not supported for this flash chip type\n");
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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115 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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116 }
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Mychaela Falconia <falcon@freecalypso.org>
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117 offset = 0;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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118 for (ng = 0; ng < li->ngroups; ng++) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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119 grp = li->groups + ng;
511e2b85c115 fc-loadtool: implement flash lock-state command
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120 if (grp->part_begin) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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121 part_addr = bi->base_addr + offset;
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diff changeset
122 if (issue_read_id(part_addr) < 0)
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123 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
125 if (offset == 0 && li->have_status_word_3) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
126 if (do_r16(bi->base_addr + 6, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
127 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
128 printf("Global status word 3: %04X\n", word);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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129 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
130 if (offset == 0 && li->have_status_word_7) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
131 if (do_r16(bi->base_addr + 0xE, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
132 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
133 printf("Global status word 7: %04X\n", word);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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134 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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135 for (nb = 0; nb < grp->nblocks; nb++) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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136 if (do_r16(bi->base_addr + offset + 4, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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137 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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138 printf("Sector%s at 0x%X: %s\n",
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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139 grp->is_group ? " group" : "", offset,
511e2b85c115 fc-loadtool: implement flash lock-state command
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140 (word & 1) ? "locked" : "unlocked");
511e2b85c115 fc-loadtool: implement flash lock-state command
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141 offset += grp->block_size;
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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142 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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143 if (grp->part_end) {
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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144 if (issue_reset_cmd(part_addr) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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145 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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146 }
511e2b85c115 fc-loadtool: implement flash lock-state command
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147 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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148 if (li->have_mode_lock_bits) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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149 if (read_mode_lock_word(bi->base_addr, 0x14, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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150 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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151 printf("Password Protection Mode lock: %04X\n", word);
511e2b85c115 fc-loadtool: implement flash lock-state command
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152 if (issue_reset_cmd(bi->base_addr) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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153 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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154 if (read_mode_lock_word(bi->base_addr, 0x24, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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155 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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156 printf("Persistent Protection Mode lock: %04X\n", word);
511e2b85c115 fc-loadtool: implement flash lock-state command
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157 if (issue_reset_cmd(bi->base_addr) < 0)
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158 return(-1);
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159 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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160 if (li->have_pln_lock_reg) {
511e2b85c115 fc-loadtool: implement flash lock-state command
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161 if (pln_special_mode_entry(bi->base_addr, 0x40) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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162 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
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163 if (do_r16(bi->base_addr, &word) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
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164 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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165 printf("PL-N Lock Register: %04X\n", word);
511e2b85c115 fc-loadtool: implement flash lock-state command
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166 if (pln_special_mode_exit(bi->base_addr) < 0)
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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167 return(-1);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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168 }
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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169 return(0);
511e2b85c115 fc-loadtool: implement flash lock-state command
Mychaela Falconia <falcon@freecalypso.org>
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170 }