Difference between revisions of "IMX8/Nitrogen8M/Getting Started/Selecting Boot Options"
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<noinclude>{{IMX8/Head}}</noinclude> | <noinclude>{{IMX8/Head}}</noinclude> | ||
| − | The | + | __TOC__ |
| + | |||
| + | ==Boot Loading Options== | ||
| + | The Nitrogen8M provides a switch in order to set the boot configurations according to your needs. You can see the switch on the following picture: | ||
| + | |||
| + | '''IMAGE''' | ||
| + | |||
| + | This switch allows to configure the boot source by selecting one of the following options: | ||
| + | *Serial Downloader: The Nitrogen8M downloads a program image from a USB connection. | ||
| + | *Internal Boot: The boot mode is selected according to U-Boot, the variable '''boot_targets''' controls boot device (EMMC or SDCARD). | ||
| + | |||
| + | In the following table you can see how to configure each boot mode. | ||
| + | |||
| + | {| class="wikitable" style="margin-right: auto; margin-left: auto; border: none;" | ||
| + | |- | ||
| + | ! style="background: black; color: white;" | Boot Source!! style="background: black; color: white;" | PIN | ||
| + | |- | ||
| + | ! scope="row" | Serial Downloader | ||
| + | | style="text-align: center" | OFF | ||
| + | |- | ||
| + | ! scope="row" | Internal Boot | ||
| + | | style="text-align: center" | ON | ||
| + | |} | ||
| + | |||
| + | The bootable source code is selected from the switch and U-Boot, the complete information is presented in the following table: | ||
| + | |||
| + | {| class="wikitable" style="margin-right: auto; margin-left: auto; border: none;" | ||
| + | |- | ||
| + | ! style="background: black; color: white;" | BOOT Source!! style="background: black; color: white;" | PIN !! style="background: black; color: white;" | boot_targets | ||
| + | |- | ||
| + | ! scope="row" | Serial Downloader | ||
| + | | style="text-align: center" | OFF || style="text-align: center" | --- | ||
| + | |- | ||
| + | ! scope="row" | Boot from EMMC | ||
| + | | style="text-align: center" | ON || style="text-align: center" | emmc | ||
| + | |- | ||
| + | ! scope="row" | Boot from SDCARD | ||
| + | | style="text-align: center" | ON || style="text-align: center" | usb0 | ||
| + | |} | ||
==EMMC== | ==EMMC== | ||
| − | + | This is how the physical switch should be set in order to boot from EMMC: | |
| − | + | ||
| + | '''IMAGE''' | ||
== USB Boot == | == USB Boot == | ||
| − | |||
| − | Instructions to setting up the USB Boot: | + | This is how the physical switch should be set in order to boot from SDCARD: |
| − | * Connect the | + | |
| − | * Start any serial console (i.e minicom or term) | + | |
| + | This Boot option also requires a Bootable USB stick and a Serial Console Cable. | ||
| + | |||
| + | Instructions to setting up the USB Boot from U-Boot: | ||
| + | * Connect the Nitrogen8M to a host machine with the Serial Console Cable. | ||
| + | * Start any serial console (i.e minicom or term). | ||
* Power on the board, the console will display the U-boot start-up screen. | * Power on the board, the console will display the U-boot start-up screen. | ||
* Press any key on your keyboard to stop the boot sequence, this will display the U-Boot console. | * Press any key on your keyboard to stop the boot sequence, this will display the U-Boot console. | ||
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setenv boot_targets usb0 | setenv boot_targets usb0 | ||
</pre> | </pre> | ||
| − | * If you do not want to repeat this | + | * If you do not want to repeat this process, you can save the selected Boot Device with this command: |
<pre> | <pre> | ||
saveenv | saveenv | ||
Revision as of 12:35, 12 November 2018
|
Contents
Boot Loading Options
The Nitrogen8M provides a switch in order to set the boot configurations according to your needs. You can see the switch on the following picture:
IMAGE
This switch allows to configure the boot source by selecting one of the following options:
- Serial Downloader: The Nitrogen8M downloads a program image from a USB connection.
- Internal Boot: The boot mode is selected according to U-Boot, the variable boot_targets controls boot device (EMMC or SDCARD).
In the following table you can see how to configure each boot mode.
| Boot Source | PIN |
|---|---|
| Serial Downloader | OFF |
| Internal Boot | ON |
The bootable source code is selected from the switch and U-Boot, the complete information is presented in the following table:
| BOOT Source | PIN | boot_targets |
|---|---|---|
| Serial Downloader | OFF | --- |
| Boot from EMMC | ON | emmc |
| Boot from SDCARD | ON | usb0 |
EMMC
This is how the physical switch should be set in order to boot from EMMC:
IMAGE
USB Boot
This is how the physical switch should be set in order to boot from SDCARD:
This Boot option also requires a Bootable USB stick and a Serial Console Cable.
Instructions to setting up the USB Boot from U-Boot:
- Connect the Nitrogen8M to a host machine with the Serial Console Cable.
- Start any serial console (i.e minicom or term).
- Power on the board, the console will display the U-boot start-up screen.
- Press any key on your keyboard to stop the boot sequence, this will display the U-Boot console.
- Change the Boot Device with the following command:
setenv boot_targets usb0
- If you do not want to repeat this process, you can save the selected Boot Device with this command:
saveenv
- Continue the Boot sequence by typing the next command:
boot
After the previous instructions, the board will boot from the USB stick
