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[build] Avoid using embedded script in VirtualBox named configuration 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Robin Smidsrød 2014-08-22 19:27:00 +02:00 committed by Michael Brown
parent 705907f9a9
commit df202b3f4d
3 changed files with 8 additions and 12 deletions
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14
src/config/vbox/README
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@ -1,16 +1,18 @@
Build using this command line:
make CONFIG=vbox EMBED=config/vbox/embedded.ipxe bin/intel--virtio-net--pcnet32.rom
make CONFIG=vbox bin/intel--virtio-net--pcnet32.isarom
Max size of a VirtualBox ROM is 56KB, 57344 bytes. There should be no need
to pad the image as long as the binary is smaller or equal to this size.
The embedded script is required because VirtualBox uses the ROM as an ISA
ROM, which will not perform any autoboot behavior. The bundled embedded
script reproduces the default autoboot behavior.
To use the ROM in VirtualBox you need to enable it using this command:
vboxmanage setextradata global \
VBoxInternal/Devices/pcbios/0/Config/LanBootRom \
path/to/intel--virtio-net--pcnet32.rom
/absolute/path/to/intel--virtio-net--pcnet32.isarom
NB: If you build the ROM using the .rom prefix then it'll be built as a PCI
ROM, which won't work properly in VirtualBox. The error message you'll see
is "No more network devices", which is somewhat confusing. If you enter the
shell and use the "autoboot" command things will work as intended. Remember
to always build as a .isarom to avoid this issue.

5
src/config/vbox/embedded.ipxe
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@ -1,5 +0,0 @@
#!ipxe
prompt --key 0x02 --timeout 2000 Press Ctrl-B to enter the iPXE shell... && shell || goto auto
exit
:auto
autoboot

1
src/config/vbox/general.h
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@ -1,7 +1,6 @@
/* Disabled from config/defaults/pcbios.h */
#undef IMAGE_ELF
#undef IMAGE_MULTIBOOT
#undef SANBOOT_PROTO_ISCSI
#undef SANBOOT_PROTO_AOE
#undef SANBOOT_PROTO_IB_SRP