[ipxe-devel] Try to free Memory without Signature

[Shao Miller]

On 12/11/2012 03:37, Arends, R.R. wrote:
>>>> On 25-8-2012 at 3:57, in message <201208250257.05105.mbrown at fensystems.co.uk>,
> Michael Brown <mbrown at fensystems.co.uk> wrote:
>> On Wednesday 22 Aug 2012 20:54:48 Jack Neely wrote:
>>> I removed line 141 of arch/i386/drivers/net/undi.c and that produced an
>>> image that at least got through initializing.  However I get to
>>>
>>>      iPXE 1.0.0+ (a0587) -- Open Source Network Boot Firmware --
>>> http://ipxe.org Features: VLAN HTTP iSCSI DNS TFTP AoE SRP bzImage ELF
>>> MBOOT PXE PXEXT Menu
>>>
>>> and the cursor flashes on the next line.  There is no further progress.
>>> I built with
>>>
>>>      make EMBED=../../PXE-all.ipxe bin/ipxe.lkrn
>>>
>>> and my embedded script looks like:
>>>
>>>      #!ipxe
>>>      # To build: cd ipxe/src
>>>      #           make EMBED=path/to/here bin/ipxe.lkrn
>>>
>>>      :retry_dhcp
>>>
>>>      dhcp || goto retry_dhcp
>>>      chain tftp://pxe.domain.com/pxelinux.0
>>>
>>> I get the feeling I just removed any support for the network device.
>>> ;-)
>>
>> If you were relying on that UNDI driver, then yes, in which case your only
>> viable solution is to wait for the bnx2 driver update to be merged.
>
> Any update on this? I'm having the same issue with an HP DL360 G6 machine.
> When booting PXE ROM -> ipxelinux.0 -> vesamenu.c32 -> ipxe.lkrn
>
> I'm doing it this way because after the ipxe.lkrn i'm chaining to sccm, and the ipxe.lkrn sets the user-class different so that we can have the dhcp point to a new next-server (wds) when ipxe.lkrn does the second dhcp.

iPXE -> ... -> iPXE seldom makes sense, in my opinion.  You can use 
Syslinux' gpxecmd.c32 module to execute commands in the already-loaded 
iPXE.  For example:

   BIOS -> PXE -> ipxelinux.0 (iPXE -> PXELINUX) -> vesamenu.c32 -> 
"sccm" menu option -> gpxecmd.c32 -> Back to iPXE, with a command to run 
a script.

In the Syslinux config-file:

LABEL sccm
   COM32 gpxecmd.c32
   APPEND chain sccm_script.ipxe

In sccm_script.ipxe:

#!ipxe
set user-class foo
autoboot

> But that second dhcp is never done goes of the above error 'Try to free Memory without Signature'.
>

Maybe the method suggest above will help.

Alternatively, Syslinux' pxechn.c32 can be used to use WDS: BIOS -> PXE 
-> ipxelinux.0 (iPXE -> PXELINUX) -> vesamenu.c32 -> "sccm" menu option 
-> pxechn.c32 -> WDS

- Shao Miller