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<a href="https://gitlab.rtems.org/fcuzzocrea">Francescodario Cuzzocrea</a>
commented on a
discussion on <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/194#note_111864">bsps/riscv/shared/start/bspgetworkarea.c</a>:
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'> <span id="LC60" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ac</span><span class="p">;</span></span>
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'> <span id="LC61" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">sc</span><span class="p">;</span></span>
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<td class="line_content" style="padding: inherit;"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'> <span id="LC62" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">len</span><span class="p">;</span></span>
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63
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'>+<span id="LC63" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">start64</span><span class="p">;</span></span>
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'>+<span id="LC64" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">size64</span><span class="p">;</span></span>
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'>+<span id="LC65" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">start32</span><span class="p">;</span></span>
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style='display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;'>+<span id="LC66" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">size32</span><span class="p">;</span></span>
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<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Actually instead of beaglevfire would be polarfire soc <gl-emoji title="slightly smiling face" data-name="slight_smile" data-unicode-version="7.0" style="margin-top: 0;">🙂</gl-emoji> .</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">I do not know if it is feasible to switch with a config options with the current build system, because the 2 different configurations requires 2 different device trees.</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">What would be great instead would be to avoid relying on a prebuilt device tree have the device tree being compiled before the compilation of rtems. This could let us easily add support for different boards using polarfire soc by including a common mpfs.dtsi. I always wanted to do this but never find the time sadly.</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">I can give another try at mstrict-align after I am back from vacations <gl-emoji title="slightly smiling face" data-name="slight_smile" data-unicode-version="7.0" style="margin-top: 0;">🙂</gl-emoji> .</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">To boot rtems on E51 on icile kit I use a custom bootloader developed with polarfire soc baremetal library. I store the image on an external spi flash (or I load it directly in ram with a debugger). On beagle v fire one can think of storing the rtems image on the qspi flash instead.</p>
<p dir="auto" style="color: #333238; margin: 0;" align="initial">On U54 I run Linux (one can start if from the rtems image which is loaded on E51 using opensbi).
Otherwise it is also possible to run another rtems instance on the U54s (with SMP).</p>
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