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| <td width="10%" class="headerItem">Current view:</td> |
| <td width="10%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">core</a> - vpd.c<span style="font-size: 80%;"> (source / <a href="vpd.c.func-c.html">functions</a>)</span></td> |
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| <td width="5%" class="headerCovTableHead">Coverage</td> |
| <td width="5%" class="headerCovTableHead" title="Covered + Uncovered code">Total</td> |
| <td width="5%" class="headerCovTableHead" title="Exercised code only">Hit</td> |
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| <td class="headerItem">Test:</td> |
| <td class="headerValue">skiboot.info</td> |
| <td></td> |
| <td class="headerItem">Lines:</td> |
| <td class="headerCovTableEntryMed">88.1 %</td> |
| <td class="headerCovTableEntry">59</td> |
| <td class="headerCovTableEntry">52</td> |
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| <td class="headerItem">Test Date:</td> |
| <td class="headerValue">2025-10-14 13:37:15</td> |
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| <td class="headerItem">Functions:</td> |
| <td class="headerCovTableEntryHi">100.0 %</td> |
| <td class="headerCovTableEntry">4</td> |
| <td class="headerCovTableEntry">4</td> |
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| <td class="headerItem">Branches:</td> |
| <td class="headerCovTableEntryHi">-</td> |
| <td class="headerCovTableEntry">0</td> |
| <td class="headerCovTableEntry">0</td> |
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| <pre class="sourceHeading"> Branch data Line data Source code</pre> |
| <pre class="source"> |
| <span id="L1"><span class="lineNum"> 1</span> : : // SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later</span> |
| <span id="L2"><span class="lineNum"> 2</span> : : /*</span> |
| <span id="L3"><span class="lineNum"> 3</span> : : * Parse Vital Product Data (VPD)</span> |
| <span id="L4"><span class="lineNum"> 4</span> : : *</span> |
| <span id="L5"><span class="lineNum"> 5</span> : : * Copyright 2013-2019 IBM Corp.</span> |
| <span id="L6"><span class="lineNum"> 6</span> : : */</span> |
| <span id="L7"><span class="lineNum"> 7</span> : : </span> |
| <span id="L8"><span class="lineNum"> 8</span> : : #include <skiboot.h></span> |
| <span id="L9"><span class="lineNum"> 9</span> : : #include <vpd.h></span> |
| <span id="L10"><span class="lineNum"> 10</span> : : #include <string.h></span> |
| <span id="L11"><span class="lineNum"> 11</span> : : #include <device.h></span> |
| <span id="L12"><span class="lineNum"> 12</span> : : </span> |
| <span id="L13"><span class="lineNum"> 13</span> : : #define CHECK_SPACE(_p, _n, _e) (((_e) - (_p)) >= (_n))</span> |
| <span id="L14"><span class="lineNum"> 14</span> : : </span> |
| <span id="L15"><span class="lineNum"> 15</span> : : /* Low level keyword search in a record. Can be used when we</span> |
| <span id="L16"><span class="lineNum"> 16</span> : : * need to find the next keyword of a given type, for example</span> |
| <span id="L17"><span class="lineNum"> 17</span> : : * when having multiple MF/SM keyword pairs</span> |
| <span id="L18"><span class="lineNum"> 18</span> : : */</span> |
| <span id="L19"><span class="lineNum"> 19</span> :<span class="tlaGNC tlaBgGNC"> 336 : const void *vpd_find_keyword(const void *rec, size_t rec_sz,</span></span> |
| <span id="L20"><span class="lineNum"> 20</span> : : const char *kw, uint8_t *kw_size)</span> |
| <span id="L21"><span class="lineNum"> 21</span> : : {</span> |
| <span id="L22"><span class="lineNum"> 22</span> :<span class="tlaGNC"> 336 : const uint8_t *p = rec, *end = rec + rec_sz;</span></span> |
| <span id="L23"><span class="lineNum"> 23</span> : : </span> |
| <span id="L24"><span class="lineNum"> 24</span> :<span class="tlaGNC"> 1114 : while (CHECK_SPACE(p, 3, end)) {</span></span> |
| <span id="L25"><span class="lineNum"> 25</span> :<span class="tlaGNC"> 1102 : uint8_t k1 = *(p++);</span></span> |
| <span id="L26"><span class="lineNum"> 26</span> :<span class="tlaGNC"> 1102 : uint8_t k2 = *(p++);</span></span> |
| <span id="L27"><span class="lineNum"> 27</span> :<span class="tlaGNC"> 1102 : uint8_t sz = *(p++);</span></span> |
| <span id="L28"><span class="lineNum"> 28</span> : : </span> |
| <span id="L29"><span class="lineNum"> 29</span> :<span class="tlaGNC"> 1102 : if (k1 == kw[0] && k2 == kw[1]) {</span></span> |
| <span id="L30"><span class="lineNum"> 30</span> :<span class="tlaGNC"> 324 : if (kw_size)</span></span> |
| <span id="L31"><span class="lineNum"> 31</span> :<span class="tlaGNC"> 323 : *kw_size = sz;</span></span> |
| <span id="L32"><span class="lineNum"> 32</span> :<span class="tlaGNC"> 324 : return p;</span></span> |
| <span id="L33"><span class="lineNum"> 33</span> : : }</span> |
| <span id="L34"><span class="lineNum"> 34</span> :<span class="tlaGNC"> 778 : p += sz;</span></span> |
| <span id="L35"><span class="lineNum"> 35</span> : : }</span> |
| <span id="L36"><span class="lineNum"> 36</span> :<span class="tlaGNC"> 12 : return NULL;</span></span> |
| <span id="L37"><span class="lineNum"> 37</span> : : }</span> |
| <span id="L38"><span class="lineNum"> 38</span> : : </span> |
| <span id="L39"><span class="lineNum"> 39</span> : : /* vpd_valid - does some basic sanity checks to ensure a VPD blob is</span> |
| <span id="L40"><span class="lineNum"> 40</span> : : * actually a VPD blob</span> |
| <span id="L41"><span class="lineNum"> 41</span> : : */</span> |
| <span id="L42"><span class="lineNum"> 42</span> :<span class="tlaGNC"> 13 : bool vpd_valid(const void *vvpd, size_t vpd_size)</span></span> |
| <span id="L43"><span class="lineNum"> 43</span> : : {</span> |
| <span id="L44"><span class="lineNum"> 44</span> :<span class="tlaGNC"> 13 : const uint8_t *vpd = vvpd;</span></span> |
| <span id="L45"><span class="lineNum"> 45</span> :<span class="tlaGNC"> 13 : int size, i = 0;</span></span> |
| <span id="L46"><span class="lineNum"> 46</span> : : </span> |
| <span id="L47"><span class="lineNum"> 47</span> : : /* find the record start byte */</span> |
| <span id="L48"><span class="lineNum"> 48</span> :<span class="tlaGNC"> 13 : while (i < vpd_size)</span></span> |
| <span id="L49"><span class="lineNum"> 49</span> :<span class="tlaGNC"> 13 : if (vpd[i++] == 0x84)</span></span> |
| <span id="L50"><span class="lineNum"> 50</span> :<span class="tlaGNC"> 13 : break;</span></span> |
| <span id="L51"><span class="lineNum"> 51</span> : : </span> |
| <span id="L52"><span class="lineNum"> 52</span> :<span class="tlaGNC"> 13 : if (i >= vpd_size)</span></span> |
| <span id="L53"><span class="lineNum"> 53</span> :<span class="tlaUNC tlaBgUNC"> 0 : return false;</span></span> |
| <span id="L54"><span class="lineNum"> 54</span> : : </span> |
| <span id="L55"><span class="lineNum"> 55</span> : : /* next two bytes are the record length, little endian */</span> |
| <span id="L56"><span class="lineNum"> 56</span> :<span class="tlaGNC tlaBgGNC"> 13 : size = 2;</span></span> |
| <span id="L57"><span class="lineNum"> 57</span> :<span class="tlaGNC"> 13 : size += vpd[i];</span></span> |
| <span id="L58"><span class="lineNum"> 58</span> :<span class="tlaGNC"> 13 : size += vpd[i + 1] << 8;</span></span> |
| <span id="L59"><span class="lineNum"> 59</span> : : </span> |
| <span id="L60"><span class="lineNum"> 60</span> :<span class="tlaGNC"> 13 : i += size; /* skip to the end marker */</span></span> |
| <span id="L61"><span class="lineNum"> 61</span> : : </span> |
| <span id="L62"><span class="lineNum"> 62</span> :<span class="tlaGNC"> 13 : if (i >= vpd_size || vpd[i] != 0x78)</span></span> |
| <span id="L63"><span class="lineNum"> 63</span> :<span class="tlaUNC tlaBgUNC"> 0 : return false;</span></span> |
| <span id="L64"><span class="lineNum"> 64</span> : : </span> |
| <span id="L65"><span class="lineNum"> 65</span> :<span class="tlaGNC tlaBgGNC"> 13 : return true;</span></span> |
| <span id="L66"><span class="lineNum"> 66</span> : : }</span> |
| <span id="L67"><span class="lineNum"> 67</span> : : </span> |
| <span id="L68"><span class="lineNum"> 68</span> : : /* Locate a record in a VPD blob</span> |
| <span id="L69"><span class="lineNum"> 69</span> : : *</span> |
| <span id="L70"><span class="lineNum"> 70</span> : : * Note: This works with VPD LIDs. It will scan until it finds</span> |
| <span id="L71"><span class="lineNum"> 71</span> : : * the first 0x84, so it will skip all those 0's that the VPD</span> |
| <span id="L72"><span class="lineNum"> 72</span> : : * LIDs seem to contain</span> |
| <span id="L73"><span class="lineNum"> 73</span> : : */</span> |
| <span id="L74"><span class="lineNum"> 74</span> :<span class="tlaGNC"> 128 : const void *vpd_find_record(const void *vpd, size_t vpd_size,</span></span> |
| <span id="L75"><span class="lineNum"> 75</span> : : const char *record, size_t *sz)</span> |
| <span id="L76"><span class="lineNum"> 76</span> : : {</span> |
| <span id="L77"><span class="lineNum"> 77</span> :<span class="tlaGNC"> 128 : const uint8_t *p = vpd, *end = vpd + vpd_size;</span></span> |
| <span id="L78"><span class="lineNum"> 78</span> :<span class="tlaGNC"> 128 : bool first_start = true;</span></span> |
| <span id="L79"><span class="lineNum"> 79</span> : : size_t rec_sz;</span> |
| <span id="L80"><span class="lineNum"> 80</span> :<span class="tlaGNC"> 128 : uint8_t namesz = 0;</span></span> |
| <span id="L81"><span class="lineNum"> 81</span> : : const char *rec_name;</span> |
| <span id="L82"><span class="lineNum"> 82</span> : : </span> |
| <span id="L83"><span class="lineNum"> 83</span> :<span class="tlaGNC"> 128 : if (!vpd)</span></span> |
| <span id="L84"><span class="lineNum"> 84</span> :<span class="tlaUNC tlaBgUNC"> 0 : return NULL;</span></span> |
| <span id="L85"><span class="lineNum"> 85</span> : : </span> |
| <span id="L86"><span class="lineNum"> 86</span> :<span class="tlaGNC tlaBgGNC"> 366 : while (CHECK_SPACE(p, 4, end)) {</span></span> |
| <span id="L87"><span class="lineNum"> 87</span> : : /* Get header byte */</span> |
| <span id="L88"><span class="lineNum"> 88</span> :<span class="tlaGNC"> 362 : if (*(p++) != 0x84) {</span></span> |
| <span id="L89"><span class="lineNum"> 89</span> : : /* Skip initial crap in VPD LIDs */</span> |
| <span id="L90"><span class="lineNum"> 90</span> :<span class="tlaGNC"> 129 : if (first_start)</span></span> |
| <span id="L91"><span class="lineNum"> 91</span> :<span class="tlaGNC"> 110 : continue;</span></span> |
| <span id="L92"><span class="lineNum"> 92</span> :<span class="tlaGNC"> 19 : break;</span></span> |
| <span id="L93"><span class="lineNum"> 93</span> : : }</span> |
| <span id="L94"><span class="lineNum"> 94</span> :<span class="tlaGNC"> 233 : first_start = false;</span></span> |
| <span id="L95"><span class="lineNum"> 95</span> :<span class="tlaGNC"> 233 : rec_sz = *(p++);</span></span> |
| <span id="L96"><span class="lineNum"> 96</span> :<span class="tlaGNC"> 233 : rec_sz |= *(p++) << 8;</span></span> |
| <span id="L97"><span class="lineNum"> 97</span> :<span class="tlaGNC"> 233 : if (!CHECK_SPACE(p, rec_sz, end)) {</span></span> |
| <span id="L98"><span class="lineNum"> 98</span> :<span class="tlaUNC tlaBgUNC"> 0 : prerror("VPD: Malformed or truncated VPD,"</span></span> |
| <span id="L99"><span class="lineNum"> 99</span> : : " record size doesn't fit\n");</span> |
| <span id="L100"><span class="lineNum"> 100</span> :<span class="tlaUNC"> 0 : return NULL;</span></span> |
| <span id="L101"><span class="lineNum"> 101</span> : : }</span> |
| <span id="L102"><span class="lineNum"> 102</span> : : </span> |
| <span id="L103"><span class="lineNum"> 103</span> : : /* Find record name */</span> |
| <span id="L104"><span class="lineNum"> 104</span> :<span class="tlaGNC tlaBgGNC"> 233 : rec_name = vpd_find_keyword(p, rec_sz, "RT", &namesz);</span></span> |
| <span id="L105"><span class="lineNum"> 105</span> :<span class="tlaGNC"> 233 : if (rec_name && strncmp(record, rec_name, namesz) == 0) {</span></span> |
| <span id="L106"><span class="lineNum"> 106</span> :<span class="tlaGNC"> 105 : if (sz)</span></span> |
| <span id="L107"><span class="lineNum"> 107</span> :<span class="tlaGNC"> 103 : *sz = rec_sz;</span></span> |
| <span id="L108"><span class="lineNum"> 108</span> :<span class="tlaGNC"> 105 : return p;</span></span> |
| <span id="L109"><span class="lineNum"> 109</span> : : }</span> |
| <span id="L110"><span class="lineNum"> 110</span> : : </span> |
| <span id="L111"><span class="lineNum"> 111</span> :<span class="tlaGNC"> 128 : p += rec_sz;</span></span> |
| <span id="L112"><span class="lineNum"> 112</span> :<span class="tlaGNC"> 128 : if (*(p++) != 0x78) {</span></span> |
| <span id="L113"><span class="lineNum"> 113</span> :<span class="tlaUNC tlaBgUNC"> 0 : prerror("VPD: Malformed or truncated VPD,"</span></span> |
| <span id="L114"><span class="lineNum"> 114</span> : : " missing final 0x78 in record %.4s\n",</span> |
| <span id="L115"><span class="lineNum"> 115</span> : : rec_name ? rec_name : "????");</span> |
| <span id="L116"><span class="lineNum"> 116</span> :<span class="tlaUNC"> 0 : return NULL;</span></span> |
| <span id="L117"><span class="lineNum"> 117</span> : : }</span> |
| <span id="L118"><span class="lineNum"> 118</span> : : }</span> |
| <span id="L119"><span class="lineNum"> 119</span> :<span class="tlaGNC tlaBgGNC"> 23 : return NULL;</span></span> |
| <span id="L120"><span class="lineNum"> 120</span> : : }</span> |
| <span id="L121"><span class="lineNum"> 121</span> : : </span> |
| <span id="L122"><span class="lineNum"> 122</span> : : /* Locate a keyword in a record in a VPD blob</span> |
| <span id="L123"><span class="lineNum"> 123</span> : : *</span> |
| <span id="L124"><span class="lineNum"> 124</span> : : * Note: This works with VPD LIDs. It will scan until it finds</span> |
| <span id="L125"><span class="lineNum"> 125</span> : : * the first 0x84, so it will skip all those 0's that the VPD</span> |
| <span id="L126"><span class="lineNum"> 126</span> : : * LIDs seem to contain</span> |
| <span id="L127"><span class="lineNum"> 127</span> : : */</span> |
| <span id="L128"><span class="lineNum"> 128</span> :<span class="tlaGNC"> 103 : const void *vpd_find(const void *vpd, size_t vpd_size,</span></span> |
| <span id="L129"><span class="lineNum"> 129</span> : : const char *record, const char *keyword,</span> |
| <span id="L130"><span class="lineNum"> 130</span> : : uint8_t *sz)</span> |
| <span id="L131"><span class="lineNum"> 131</span> : : {</span> |
| <span id="L132"><span class="lineNum"> 132</span> : : size_t rec_sz;</span> |
| <span id="L133"><span class="lineNum"> 133</span> : : const uint8_t *p;</span> |
| <span id="L134"><span class="lineNum"> 134</span> : : </span> |
| <span id="L135"><span class="lineNum"> 135</span> :<span class="tlaGNC"> 103 : p = vpd_find_record(vpd, vpd_size, record, &rec_sz);</span></span> |
| <span id="L136"><span class="lineNum"> 136</span> :<span class="tlaGNC"> 103 : if (p)</span></span> |
| <span id="L137"><span class="lineNum"> 137</span> :<span class="tlaGNC"> 103 : p = vpd_find_keyword(p, rec_sz, keyword, sz);</span></span> |
| <span id="L138"><span class="lineNum"> 138</span> :<span class="tlaGNC"> 103 : return p;</span></span> |
| <span id="L139"><span class="lineNum"> 139</span> : : }</span> |
| </pre> |
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