tree 380f3b12f48512d833abdd50e268df7004d92c4f
parent 461e02d371d9b7a31ac0d91eee38a9ff7c07a8be
author Michael Brown <mcb30@ipxe.org> 1642436237 +0000
committer Michael Brown <mcb30@ipxe.org> 1642436237 +0000

[efi] Attempt to fetch autoexec script via TFTP

Attempt to fetch the autoexec.ipxe script via TFTP using the PXE base
code protocol installed on the loaded image's device handle, if
present.

This provides a generic alternative to the use of an embedded script
for chainloaded binaries, which is particularly useful in a UEFI
Secure Boot environment since it allows the script to be modified
without the need to sign a new binary.

As a side effect, this also provides a third method for breaking the
PXE chainloading loop (as an alternative to requiring an embedded
script or custom DHCP server configuration).

Signed-off-by: Michael Brown <mcb30@ipxe.org>