Well, I don't know what the VxWorks bootloader does, but I know PPCBoot/U-Boot. In order to get any of the boot[x] commands to work, it assumes you have the kernel image loaded into memory already. For example, to load and execute the Linux kernel, here is one method assuming you have a properly functioning Ethernet i/f and a tftpserver.

tftpboot 400000 linux-ppcboot-image bootm 400000

The first line loads the kernel image into memory at my chosen address of 0x40_0000 and the second line transfers control to it.

The other thing you must do for this to work is to put the PPCBoot / U-Boot header on your kernel image using the mkimage utility that comes with U-Boot. The README file in U-Boot distribution contains this info and much more!

-Chris Hallinan DS4.COM, Inc

-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net]On Behalf Of Timothy Canham Sent: Friday, January 10, 2003 12:40 PM To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] PPCBoot vxworks question

I am new to the list and new to PPCBoot/UBoot, so apologies in advance if this is old territory. I am trying to load a vxworks kernel located on an external server, using the typical vxworks boot loader. i.e., the vxworks boot loader loads a kernel from a remote server using rsh and jumps to it. From what I can see, PPCBoot has the bootvx command, but it appears to require that the vxworks kernel already be loaded to work.

Can someone post the equivalent procedure to duplicate in PPCBoot what the vxworks boot loader does?

--

Timothy K. Canham Isaiah 26:3 tim@timcanham.com http://www.timcanham.com

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