annotate helpers/srec4ram.c @ 281:a75eefbf8be4

Phone boot with PWON: weed out short button presses Every standard end user phone has a design provision, most naturally implemented in firmware, whereby the PWON button effects a boot only if it is held down long enough - short presses of this PWON button are detected, assumed to be spurious and cause the fw to power back off instead of proceeding with boot. The present change introduces this standard function in FreeCalypso.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 24 Sep 2021 02:03:08 +0000
parents 1fb47f5b597a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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9
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1 /*
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2 * This ad hoc utility is used as part of building RAM-loadable
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3 * firmware images for targets with large RAM. It reads the ramimage.m0
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4 * S-record file produced by TI's hex470 post-linker and re-emits it
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Mychaela Falconia <falcon@freecalypso.org>
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5 * in another SREC form that is suitable for feeding to fc-xram.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <ctype.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14
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15 char *infname;
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16 FILE *inf, *outf;
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17 char srecbuf[80];
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18 u_char srecbin[40], srecout[40];
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19 int lineno;
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20
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21 decode_hex_byte(s)
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22 char *s;
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23 {
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24 register int u, l;
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25
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26 if (!isxdigit(s[0]) || !isxdigit(s[1]))
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27 return(-1);
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28 if (isdigit(s[0]))
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29 u = s[0] - '0';
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30 else if (isupper(s[0]))
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31 u = s[0] - 'A' + 10;
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32 else
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33 u = s[0] - 'a' + 10;
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34 if (isdigit(s[1]))
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35 l = s[1] - '0';
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36 else if (isupper(s[1]))
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37 l = s[1] - 'A' + 10;
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38 else
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39 l = s[1] - 'a' + 10;
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40 return((u << 4) | l);
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41 }
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42
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43 srec2bin()
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44 {
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45 register int i, l, b;
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46
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47 l = decode_hex_byte(srecbuf + 2);
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48 if (l < 1) {
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49 fprintf(stderr, "%s line %d: S-record length octet is bad\n",
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50 infname, lineno);
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51 exit(1);
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52 }
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53 srecbin[0] = l;
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54 if (l > 35) {
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55 fprintf(stderr,
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56 "%s line %d: S-record is longer than expected\n",
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57 infname, lineno);
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58 exit(1);
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59 }
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60 for (i = 1; i <= l; i++) {
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61 b = decode_hex_byte(srecbuf + i*2 + 2);
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62 if (b < 0) {
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63 fprintf(stderr, "%s line %d: hex decode error\n",
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64 infname, lineno);
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65 exit(1);
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66 }
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67 srecbin[i] = b;
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68 }
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69 return(0);
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70 }
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71
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72 srec_cksum()
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73 {
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74 u_char accum;
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75 register int i, len;
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76
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77 len = srecbin[0] + 1;
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78 accum = 0;
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79 for (i = 0; i < len; i++)
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80 accum += srecbin[i];
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81 if (accum != 0xFF) {
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82 fprintf(stderr, "%s line %d: bad checksum\n", infname, lineno);
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83 exit(1);
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84 }
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85 return(0);
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86 }
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87
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88 emit_output_srec(type, buf)
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89 u_char *buf;
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90 {
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91 int i;
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92 u_char accum = 0;
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93
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94 putc('S', outf);
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95 putc(type, outf);
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96 for (i = 0; i < buf[0]; i++) {
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97 fprintf(outf, "%02X", buf[i]);
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98 accum += buf[i];
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99 }
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100 fprintf(outf, "%02X\n", ~accum & 0xFF);
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101 return 0;
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102 }
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103
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Mychaela Falconia <falcon@freecalypso.org>
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104 transform_s3()
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105 {
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106 int datalen;
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107 u_char *sp, *dp;
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108 int i;
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109
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110 if (srecbin[0] < 6) {
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Mychaela Falconia <falcon@freecalypso.org>
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111 fprintf(stderr,
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112 "%s line %d: S3 record is too short\n",
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Mychaela Falconia <falcon@freecalypso.org>
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113 infname, lineno);
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114 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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115 }
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Mychaela Falconia <falcon@freecalypso.org>
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116 datalen = srecbin[0] - 5;
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117 if (datalen & 1) {
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Mychaela Falconia <falcon@freecalypso.org>
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118 fprintf(stderr, "%s line %d: odd data length\n",
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Mychaela Falconia <falcon@freecalypso.org>
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119 infname, lineno);
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120 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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121 }
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Mychaela Falconia <falcon@freecalypso.org>
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122 sp = srecbin;
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Mychaela Falconia <falcon@freecalypso.org>
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123 dp = srecout;
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Mychaela Falconia <falcon@freecalypso.org>
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124 for (i = 0; i < 5; i++)
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Mychaela Falconia <falcon@freecalypso.org>
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125 *dp++ = *sp++;
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Mychaela Falconia <falcon@freecalypso.org>
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126 for (i = 0; i < datalen; i += 2) {
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Mychaela Falconia <falcon@freecalypso.org>
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127 dp[0] = sp[1];
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Mychaela Falconia <falcon@freecalypso.org>
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128 dp[1] = sp[0];
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Mychaela Falconia <falcon@freecalypso.org>
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129 sp += 2;
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130 dp += 2;
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Mychaela Falconia <falcon@freecalypso.org>
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131 }
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Mychaela Falconia <falcon@freecalypso.org>
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132 return 0;
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Mychaela Falconia <falcon@freecalypso.org>
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133 }
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Mychaela Falconia <falcon@freecalypso.org>
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134
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Mychaela Falconia <falcon@freecalypso.org>
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135 generate_vectors_record()
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Mychaela Falconia <falcon@freecalypso.org>
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136 {
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Mychaela Falconia <falcon@freecalypso.org>
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137 u_char *dp;
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Mychaela Falconia <falcon@freecalypso.org>
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138 u_long addr;
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Mychaela Falconia <falcon@freecalypso.org>
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139 int i;
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Mychaela Falconia <falcon@freecalypso.org>
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140
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Mychaela Falconia <falcon@freecalypso.org>
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141 srecout[0] = 28 + 5;
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Mychaela Falconia <falcon@freecalypso.org>
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142 srecout[1] = 0x00;
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Mychaela Falconia <falcon@freecalypso.org>
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143 srecout[2] = 0x80;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 srecout[3] = 0x00;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 srecout[4] = 0x00;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 dp = srecout + 5;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 for (i = 0; i < 7; i++) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 addr = 0x01004000 + i * 4;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 *dp++ = addr;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 *dp++ = addr >> 8;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 *dp++ = addr >> 16;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 *dp++ = addr >> 24;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 emit_output_srec('3', srecout);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 return 0;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 generate_jump_record()
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 srecout[0] = 5;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 srecout[1] = 0x01;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 srecout[2] = 0x00;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 srecout[3] = 0x40;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 srecout[4] = 0x58;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 emit_output_srec('7', srecout);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 return 0;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 main(argc, argv)
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 char **argv;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 if (argc < 2 || argc > 3) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 fprintf(stderr, "usage: %s input.m0 [output.srec]\n", argv[0]);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 infname = argv[1];
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 inf = fopen(infname, "r");
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 if (!inf) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 perror(infname);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 if (argc > 2) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 outf = fopen(argv[2], "w");
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 if (!outf) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 perror(argv[2]);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 } else
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 outf = stdout;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 for (lineno = 1; ; lineno++) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 if (!fgets(srecbuf, sizeof srecbuf, inf)) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 fprintf(stderr, "%s: premature EOF\n", infname);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 if (srecbuf[0] != 'S') {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 fprintf(stderr, "%s line %d: not an S-record\n",
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 infname, lineno);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 srec2bin();
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 srec_cksum();
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 switch (srecbuf[1]) {
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 case '0':
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 emit_output_srec('0', srecbin);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 continue;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 case '3':
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 transform_s3();
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 emit_output_srec('3', srecout);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 continue;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 case '7':
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 break;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 default:
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 fprintf(stderr, "%s line %d: unexpected S%c record\n",
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 infname, lineno, srecbuf[1]);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 exit(1);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 break;
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 }
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 generate_vectors_record();
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 generate_jump_record();
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 exit(0);
1fb47f5b597a helpers: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 }