[ipxe-devel] Regression with commit fc87adb46c1395b09302085e9d15fcd8ab3c31fe - [efi] Expose downloaded images via EFI_SIMPLE_FILE_SYSTEM_PROTOCOL on IMAGE_EFI

[James A. Peltier]

----- Original Message -----

| 2013/4/9 James A. Peltier < jpeltier at sfu.ca >

| | I have iPXE working with both legacy BIOS and EFI machines right
| | now,
| | except that I can't...
| 

| How did you do this? Did you use the method Michael described above?

I have a undionly.kpxe chainload from legacy BIOS and I have a snponly.efi that I load based on DHCP option 93. These platforms both run the same iPXE menu bootstrap code and the menus have been abstracted to do the "right thing" based on the platform and architecture. 

In DHCP server 
============ 

option arch code 93 = unsigned integer 16; 
if option arch = 00:07 { 
# UEFI client 
next-server mirror.its.sfu.ca; 
filename "/snponly.efi"; 
} else { 
# BIOS client 
next-server mirror.its.sfu.ca; 
filename "/undionly.kpxe"; 
} 

iPXE menu 
========= 

:windows 
goto windows-${bios_efi} 

:windows-bios 
set base-url ${ufds-base-url}/discovery7 
kernel ${ufds-base-url}/wimboot 
initrd ${base-url}/bootmgr bootmgr 
initrd ${base-url}/boot/bcd BCD 
#initrd ${base-url}/boot/fonts/segmono_boot.ttf segmono_boot.ttf 
#initrd ${base-url}/boot/fonts/segoe_slboot.ttf segoe_slboot.ttf 
#initrd ${base-url}/boot/fonts/wgl4_boot.ttf wgl4_boot.ttf 
initrd ${base-url}/boot/boot.sdi boot.sdi 
##initrd ${base-url}/sources/boot-${arch}.wim boot.wim 
initrd ${base-url}/sources/boot-new.wim boot.wim 
boot || goto failed 
goto start 

:windows-efi 
echo You are an EFI system. You are not currently supported! 
sleep 10 
goto start 

NOTE: that ${arch} and ${bios_efi} is set at bootstrap time for each client. This allows me to have one menu entry/system that supports both legacy BIOS and (U)EFI systems. However, they're using an iPXE binary that's for the target platform. What you are asking for is simply not possible. 

cpuid --ext 29 && set arch x86_64 || set arch i386 
iseq ${platform} efi && set bios_efi efi || set bios_efi bios 

-- 

James A. Peltier 
Manager, IT Services - Research Computing Group 
Simon Fraser University - Burnaby Campus 
Phone : 778-782-6573 
Fax : 778-782-3045 
E-Mail : jpeltier at sfu.ca 
Website : http://www.sfu.ca/itservices 

“A successful person is one who can lay a solid foundation from the bricks others have thrown at them.” -David Brinkley via Luke Shaw 
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