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| <div class="title">Translation Table Base Registers (TTBR0/TTBR1)<div class="ingroups"><a class="el" href="group__CMSIS__core__register.html">Core Register Access</a></div></div> </div> |
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| <p>TTBRn holds the base address of translation table n, and information about the memory it occupies. |
| <a href="#details">More...</a></p> |
| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> |
| Functions</h2></td></tr> |
| <tr class="memitem:ga678997bc01f6d8d48b1d407cec24809d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="cmsis__armcc_8h.html#ab904513442afdf77d4f8c74f23cbb040">__STATIC_FORCEINLINE</a> uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__TTBR.html#ga678997bc01f6d8d48b1d407cec24809d">__get_TTBR0</a> (void)</td></tr> |
| <tr class="memdesc:ga678997bc01f6d8d48b1d407cec24809d"><td class="mdescLeft"> </td><td class="mdescRight">Get TTBR0. <a href="#ga678997bc01f6d8d48b1d407cec24809d">More...</a><br/></td></tr> |
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| <tr class="memdesc:gad2ccad052f77c18897c5ceaaf307711e"><td class="mdescLeft"> </td><td class="mdescRight">Set TTBR0. <a href="#gad2ccad052f77c18897c5ceaaf307711e">More...</a><br/></td></tr> |
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| <a name="details" id="details"></a><h2 class="groupheader">Description</h2> |
| <p><b>32-bit TTBR format</b> </p> |
| <table class="doxtable"> |
| <tr> |
| <th align="left">Bits </th><th align="left">Name </th><th align="left">Function </th></tr> |
| <tr> |
| <td align="left">[31:x] </td><td align="left">BADDR </td><td align="left">Translation table base address, bits[31:x]. </td></tr> |
| <tr> |
| <td align="left">[x-1:7] </td><td align="left">- </td><td align="left">Reserved. </td></tr> |
| <tr> |
| <td align="left">[6] </td><td align="left">IRGN[0] </td><td align="left">Inner region bit 0. </td></tr> |
| <tr> |
| <td align="left">[5] </td><td align="left">NOS </td><td align="left">Not Outer Shareable bit. </td></tr> |
| <tr> |
| <td align="left">[4:3] </td><td align="left">RGN </td><td align="left">Region bits. </td></tr> |
| <tr> |
| <td align="left">[2] </td><td align="left">- </td><td align="left">Reserved. </td></tr> |
| <tr> |
| <td align="left">[1] </td><td align="left">S </td><td align="left">Shareable bit. </td></tr> |
| <tr> |
| <td align="left">[0] </td><td align="left">C/IRGN[1] </td><td align="left">Cacheable bit. / Inner region bit 1. </td></tr> |
| </table> |
| <dl class="section note"><dt>Note</dt><dd>The width of TTBR0 BADDR field depends on the setting in TTBCR N field, giving <code>x=14-N</code>. </dd> |
| <dd> |
| The width of TTBR1 BADDR field is fixed at <code>x=14</code>.</dd></dl> |
| <p><b>64-bit TTBR format</b> </p> |
| <table class="doxtable"> |
| <tr> |
| <th align="left">Bits </th><th align="left">Name </th><th align="left">Function </th></tr> |
| <tr> |
| <td align="left">[63:56] </td><td align="left">- </td><td align="left">Reserved. </td></tr> |
| <tr> |
| <td align="left">[55:48] </td><td align="left">ASID </td><td align="left">An ASID for the translation table base address. </td></tr> |
| <tr> |
| <td align="left">[47:40] </td><td align="left">- </td><td align="left">Reserved. </td></tr> |
| <tr> |
| <td align="left">[39:x] </td><td align="left">BADDR </td><td align="left">Translation table base address, bits[39:x]. </td></tr> |
| <tr> |
| <td align="left">[x-1:0] </td><td align="left">- </td><td align="left">Reserved. </td></tr> |
| </table> |
| <dl class="section note"><dt>Note</dt><dd>The width of TBBR0/TBBR1 BADDR fields depends on the settings in TTBCR T0SZ/T1SZ fields respectively, giving <code>x=14-TnSZ</code>.</dd></dl> |
| <p>Consider using <a class="el" href="group__CMSIS__TTBR.html#ga678997bc01f6d8d48b1d407cec24809d">__get_TTBR0</a> and <a class="el" href="group__CMSIS__TTBR.html#gad2ccad052f77c18897c5ceaaf307711e">__set_TTBR0</a> for accessing TTBR0 register. </p> |
| <h2 class="groupheader">Function Documentation</h2> |
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| <td class="memname"><a class="el" href="group__comp__cntrl__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> uint32_t __get_TTBR0 </td> |
| <td>(</td> |
| <td class="paramtype">void </td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>This function returns the value of the Translation Table Base Register 0.</p> |
| <dl class="section return"><dt>Returns</dt><dd>Translation Table Base Register 0 value</dd></dl> |
| <p>This function returns the value of the Translation Table Base Register 0. </p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="gad2ccad052f77c18897c5ceaaf307711e"></a> |
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| <td class="memname"><a class="el" href="group__comp__cntrl__gr.html#gaba87361bfad2ae52cfe2f40c1a1dbf9c">__STATIC_INLINE</a> void __set_TTBR0 </td> |
| <td>(</td> |
| <td class="paramtype">uint32_t </td> |
| <td class="paramname"><em>ttbr0</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>This function assigns the given value to the Translation Table Base Register 0.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">ttbr0</td><td>Translation Table Base Register 0 value to set</td></tr> |
| </table> |
| </dd> |
| </dl> |
| <p>This function assigns the given value to the Translation Table Base Register 0. </p> |
| |
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