Kontron AM4210 - Manual (Page 66)

51 AM4210
www.kontron.com
There are 3 different types of bootloader environment variables:
• Script: The variable is a set of consecutive (more simple) bootloader commands to perform a
specific task. A command script is invoked using the ‘run ’ syntax. E.g. the ‘run clear_env’ <br>command would erase the bootloader environment sectors causing the bootloader to use its <br>default environment upon next restart.</p><p style="position:absolute;top:131px;left:117px;white-space:nowrap" class="ft04">nuke_data0a</p><p style="position:absolute;top:131px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:131px;left:369px;white-space:nowrap" class="ft04">Command script to erase in the active image the onboard flash partition data0a</p><p style="position:absolute;top:154px;left:117px;white-space:nowrap" class="ft04">nuke_data0b</p><p style="position:absolute;top:154px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:154px;left:369px;white-space:nowrap" class="ft04">Command script to erase in the active image the onboard flash partition data0b</p><p style="position:absolute;top:186px;left:117px;white-space:nowrap" class="ft04">nuke_env</p><p style="position:absolute;top:186px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:178px;left:369px;white-space:nowrap" class="ft04">Command script (use with “run nuke_cmd”) that erases the U-Boot environment </p><p style="position:absolute;top:193px;left:369px;white-space:nowrap" class="ft04">for the active image</p><p style="position:absolute;top:217px;left:117px;white-space:nowrap" class="ft04">nuke_env_backup</p><p style="position:absolute;top:217px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:217px;left:369px;white-space:nowrap" class="ft04">Command script to erase the U-Boot environment for the backup bootloader</p><p style="position:absolute;top:248px;left:117px;white-space:nowrap" class="ft04">pci_console_active</p><p style="position:absolute;top:248px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:240px;left:369px;white-space:nowrap" class="ft04">When set, enables the Octeon PCI console instead of serial console in U-Boot </p><p style="position:absolute;top:256px;left:369px;white-space:nowrap" class="ft04">(default: not set for flash based bootloader, set for RAM resident bootloader)</p><p style="position:absolute;top:279px;left:117px;white-space:nowrap" class="ft04">pci_console_count</p><p style="position:absolute;top:279px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:279px;left:369px;white-space:nowrap" class="ft04">Number of PCI consoles to set up. default: 1</p><p style="position:absolute;top:302px;left:117px;white-space:nowrap" class="ft04">pci_console_size</p><p style="position:absolute;top:302px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:302px;left:369px;white-space:nowrap" class="ft04">Size of PCI console buffer in bytes, minimum 128. default: 1024</p><p style="position:absolute;top:343px;left:117px;white-space:nowrap" class="ft04">serial_rtscts</p><p style="position:absolute;top:343px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:326px;left:369px;white-space:nowrap" class="ft04">yes – use hardware flow control when transmitting serial data through UART0/</p><p style="position:absolute;top:341px;left:369px;white-space:nowrap" class="ft08">UART1 in bootloader and simple executive applications (default)<br><not set> - do not use hardware flow control</p><p style="position:absolute;top:391px;left:117px;white-space:nowrap" class="ft04">uboot_backup_flash_update</p><p style="position:absolute;top:391px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:383px;left:369px;white-space:nowrap" class="ft04">Command script to flash a U-Boot binary image transferred with tftpboot to the </p><p style="position:absolute;top:399px;left:369px;white-space:nowrap" class="ft04">backup image bootloader</p><p style="position:absolute;top:430px;left:117px;white-space:nowrap" class="ft04">uboot_flash_update</p><p style="position:absolute;top:430px;left:314px;white-space:nowrap" class="ft04">Script</p><p style="position:absolute;top:422px;left:369px;white-space:nowrap" class="ft04">Command script to flash a U-Boot binary image transferred with tftpboot to the </p><p style="position:absolute;top:438px;left:369px;white-space:nowrap" class="ft04">active image bootloader</p><p style="position:absolute;top:479px;left:117px;white-space:nowrap" class="ft04">vlan</p><p style="position:absolute;top:479px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:461px;left:369px;white-space:nowrap" class="ft08"><not set> - send and accept only untagged frames<br>N – sent all frames as IEEE 802.1Q tagged frames using VLAN ID N and default </p><p style="position:absolute;top:496px;left:369px;white-space:nowrap" class="ft04">priority. Also accept IEEE 802.1Q tagged frames when they match VLAN ID N</p><p style="position:absolute;top:538px;left:117px;white-space:nowrap" class="ft04">watchdogboot</p><p style="position:absolute;top:538px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:519px;left:369px;white-space:nowrap" class="ft08">0 – disable boot monitor watchdog (default)<br>5...n – timeout in seconds before boot monitor watchdog fires<br>Note: This is the pBMWD watchdog</p><p style="position:absolute;top:599px;left:117px;white-space:nowrap" class="ft04">watchdogos</p><p style="position:absolute;top:599px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:580px;left:369px;white-space:nowrap" class="ft08">0 – disable OS load watchdog (default)<br>15...n – timeout in seconds before load OS watchdog fires<br>Note: This is the pOSWD watchdog</p><p style="position:absolute;top:650px;left:117px;white-space:nowrap" class="ft04">ignoreposterr</p><p style="position:absolute;top:650px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:641px;left:369px;white-space:nowrap" class="ft08">0 – stop boot process if power on self test errors are detected<br>1 – continue boot in the presence of power on self test errors (default)</p><p style="position:absolute;top:702px;left:117px;white-space:nowrap" class="ft04">postresult</p><p style="position:absolute;top:702px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:683px;left:369px;white-space:nowrap" class="ft08">Contains the power on self tests results:<br>0 - POST successful (default), <br>1 - POST failed</p><p style="position:absolute;top:762px;left:117px;white-space:nowrap" class="ft04">memtest</p><p style="position:absolute;top:762px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:744px;left:369px;white-space:nowrap" class="ft08">0 = no DRAM test during POST<br>1 - quick DRAM test (default)<br>2 - full DRAM test</p><p style="position:absolute;top:822px;left:117px;white-space:nowrap" class="ft04">bootstopkey</p><p style="position:absolute;top:822px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:804px;left:369px;white-space:nowrap" class="ft04">string to wait for during startup. If this string is entered, U-Boot will interrupt the </p><p style="position:absolute;top:820px;left:369px;white-space:nowrap" class="ft08">boot process, stop the watchdog and will start its internal command line interface. <br>default: “stop”</p><p style="position:absolute;top:871px;left:117px;white-space:nowrap" class="ft04">dhcp_client_id</p><p style="position:absolute;top:871px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:862px;left:369px;white-space:nowrap" class="ft08">0 – do not include DHCP option 61 client identifier (default)<br>1 – do include DHCP option 61 client identifier variant 1</p><p style="position:absolute;top:921px;left:117px;white-space:nowrap" class="ft04">e1000_flu</p><p style="position:absolute;top:921px;left:314px;white-space:nowrap" class="ft04">Var</p><p style="position:absolute;top:904px;left:369px;white-space:nowrap" class="ft04">1 - forces E1000 link up, using this setting fixes autonegotiation problems with </p><p style="position:absolute;top:920px;left:369px;white-space:nowrap" class="ft08">some 'bootp' and 'tftpboot' hosts<br>All others: standard behaviour as originally implemented in driver</p><p style="position:absolute;top:108px;left:116px;white-space:nowrap" class="ft05">Name</p><p style="position:absolute;top:108px;left:313px;white-space:nowrap" class="ft05">Type</p><p style="position:absolute;top:108px;left:369px;white-space:nowrap" class="ft05">Description</p></div> </div> <div class="manual-page-original" itemscope="itemscope" itemtype="https://schema.org/ImageObject" data-img="/screens/655279/66.png" style="display: none;"> </div> </div> <a href="/manuals/637916/kontron-am4210.html?page=65" class="manual-view__prev -onpage-nav" title="Previous (← + Ctrl)" aria-label="Previous page"><svg class="svg-icon"><use xlink:href="#icon-arrow-6"></use></svg></a> <a href="/manuals/637916/kontron-am4210.html?page=67" class="manual-view__next -onpage-nav" title="Next (Ctrl + →)" aria-label="Next 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