Loading iPXE from RPL

[mcb30]

(2015-09-30 23:00)man-x86 Wrote:  Rpld's load/execute addresses are not very clearly explained, but that's only a part of the problem (and doesn't depends on iPXE).
Anyways, I managed to boot an old etherboot 5.4.3 image (works the same way with rom as well as zrom images) from RPL, assuming load=0x1000 and execute=0x1006 (it also works the same way with load=0x2000 and execute=0x2006), following this post.

Interesting! You might be able to get the RPL ROM to boot an iPXE ROM image directly by providing the correct execution address. For example:

Code:

make bin/ne.rom
grep int19_entry bin/ne.rom.tmp.map

with my build environment gives

Code:

0000028e l       .prefix        00000044 int19_entry

which should mean that load=0x2000 and execute=0x228e would work to load ne.rom directly from RPL.

qemu apparently has an emulation for the ISA ne2k NIC. Could you extract the RPL ROM and e-mail me a copy? If that loads, then it should be relatively trivial to create a .rpl format for iPXE so that you could run just

Code:

make bin/ne.rpl

and then boot using load=0x1000 and execute=0x1000.

Michael


Michael