DBOX2 BOOTMANAGER PACKET DRIVER

Different configurations are kept there. So The following is only valid for the CDK configuration. Ultimately, the U-boot executes the command “bootm”, which then starts the Linux-Kernel and passes its parameters in the environment variable “bootargs”. The second-but-last step if the request of the newly assigned bootfile, the Linux-Kernel. This would create an infinite loop.

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Dbo2 bootfile is now being sent to the DBox2. Ultimately, the U-boot executes the command “bootm”, which then starts the Linux-Kernel and passes its parameters in the environment variable “bootargs”.

The variables serverip,rootpath,ipaddr,gatewayip,netmask and hostname are being requested via DHCP. Diese Seite wurde zuletzt am That is why you need a special U-boot for use with the Bootmanager.

With activated Debug-Mode it prints an error message, but executes the bootfile nevertheless, in our application the bootfile is u-boot. Afterwards the program “init” is executed by the kernel, ending the kernel boot procedure. It has no knowledge of IP addresses, so the DBox2 does not have one anymore.

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Dbox2:CDK YADD Boot Procedure

If the Bmon is not in Debug-Mode now, it denies execution of packdt boot file if the signature is invalid and reboots. These are being kept hardcoded in the U-bootas laid out by the U-boot configuration, in the environment variable “bootargs”. As the Kernel is an executable file, it may be passed some arguments.

The second-but-last step if the request of the newly assigned bootfile, the Linux-Kernel. U-boot is much more sophisticated than the Bmonbut it bootmaanger nothing about what happened until now. Mai um These parameters tell the Kernel everything it has got to know for booting. Which one of these configurations is used when compiling is determined by the symlink u-boot.

Dbox2:CDK YADD Boot Procedure – TuxBoxWIKI

This is used for displaying a boot logo and is not critical for booting. U-boot executes the commands that were built into it when compiling.

One thing is important to note: The complete paacket is read from the parameter “nfsroot”. This bootfile is the second stage bootloader Bmon is the first, read the details here.

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This would create an infinite loop. 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. Different configurations are kept there.

What follows is the usual initialization of system and applications. First the Bmon is executed.

Ansichten Lesen Quelltext anzeigen Versionsgeschichte. The Linux-Kernel is being loaded to the main memory of the DBox2.

The Windows- Bootmanager dboz2 not recognize this option, so it will always serve the U-boot as bootfile. When the transfer is done, it computes the signature. So The following is only valid for the CDK configuration.

The CDK -boot arguments are as follows:. After vootmanager, network communication follows. Theoretically, you might as well interrupt the autostart of U-boot and enter commands manually.