DBOX2 BOOTMANAGER PACKET DRIVER

Theoretically, you might as well interrupt the autostart of U-boot and enter commands manually. Those who like to have it individual should look at the directory u-boot-config in the CDK. This way the Bmon receives all neccessary data. One thing is important to note: It has no knowledge of IP addresses, so the DBox2 does not have one anymore.

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Dbox2:CDK YADD Boot Procedure

That is why you need a special U-boot for use with the Bootmanager. The complete path is read from the parameter "nfsroot".

What follows is the usual initialization of system and applications. Which one of these configurations is used when compiling is determined by the symlink u-boot.

Afterwards the program "init" is executed by the kernel, ending the kernel boot procedure. Ultimately, the U-boot executes the command "bootm", which then starts the Linux-Kernel and passes its parameters in the environment variable "bootargs".

Dbox2:CDK YADD Boot Procedure – TuxBoxWIKI

Different configurations are kept there. This is used for displaying a boot logo and is not critical for booting.

The CDK -boot arguments are as follows:. U-boot executes the commands that were built into it when compiling. First the Bmon is executed.

So The following is only valid for the CDK configuration. Theoretically, you might as well interrupt the autostart of U-boot and enter commands manually.

Diese Seite wurde zuletzt am Bootmanaher way the Bmon receives all neccessary data. This would create an infinite loop. Ansichten Lesen Quelltext anzeigen Versionsgeschichte. If the Bmon is not in Debug-Mode now, it denies execution of the boot file if the signature is invalid and reboots.

After that, network communication follows. The Bmon stores pacjet in memory. The variables serverip,rootpath,ipaddr,gatewayip,netmask and hostname are being requested via DHCP. The bootfile is now being sent to the DBox2. As the Kernel is an executable file, it may be passed some arguments.

One thing is important to note: Those who like to have it individual should look at the directory u-boot-config in the CDK. U-boot is much more sophisticated than the Bmonbut it knows nothing about what happened until now. This bootfile is the second stage bootloader Bmon is the first, read the details here. The Windows- Bootmanager does not recognize this option, so it will always serve the U-boot as bootfile.

When the transfer is done, it computes the signature. These are being kept hardcoded in the Bootmaageras laid out by the U-boot configuration, in the environment variable "bootargs". Mai um It has no knowledge of IP addresses, so the DBox2 does not have one anymore.

These parameters tell the Kernel everything it has got to know for booting. The second-but-last step if the request of the newly assigned bootfile, the Linux-Kernel.

With activated Debug-Mode it prints an error message, but executes the bootfile nevertheless, in our application the bootfile is u-boot.

The Linux-Kernel is being loaded to the main memory of the DBox2.