Re: [U-Boot-Users] directly execute linux zImage: cmd_bootz

Hello

Holger Schurig wrote:

Hi !

Attached is a patch for armboot that directly calls a Linux zImage. It has been tested on my PXA250 platform.

Prerequisites:

• works only on arm, because it takes stuff from asm_arm/armlinux.c
• set CONFIG_KERNEL_RAM_BASE to where the zImage is in Flash

Problems:

• I have no clue if the tag list get's correctly set up, I'm using a kernel

2.4 which doesn't use the tags anyway.

AFAICS 2.4 uses the tag list if there is one prepared by the bootloader.

• how can I pass the cmdline?

By using the "ATAG_CMDLINE" in the tag list. Make sure you have defined "CONFIG_CMDLINE_TAG" in your u-boot config file.

• Kernel 2.4. clobbers r2, the pointer to the tag list. In your fixup code you

can have

    MACHINE_START(...)
    BOOT_PARAMS(0xa0000100)
    ...
    MACHINE_END

but how put I *params to some fixed address?

See http://sourceforge.net/mailarchive/forum.php?thread_id=1531608&forum_id=...

Dave