Mmm, the archdetect stuff in lib-d-i is :
static struct map map_machine[] = {
{ "PReP", "prep" },
{ "CHRP Pegasos", "chrp_pegasos" },
{ "CHRP IBM,7028-6C4", "chrp_rs6k" },
{ "CHRP IBM,7029-6E3", "chrp_rs6k" },
{ "CHRP IBM,7038-6M2", "chrp_rs6k" },
{ "CHRP IBM,7039-651", "chrp_rs6k" },
{ "CHRP IBM,7040-681", "chrp_rs6k" },
{ "CHRP IBM,7044-270", "chrp_rs6k" },
{ "CHRP IBM,7046-B50", "chrp_rs6k" },
{ "CHRP IBM,8842-21X", "chrp_rs6k" },
{ "CHRP IBM,9111-520", "chrp_rs6k" },
{ "CHRP IBM,9113-550", "chrp_rs6k" },
{ "CHRP IBM,9117-570", "chrp_rs6k" },
{ "CHRP IBM,9124-720", "chrp_rs6k" },
{ "CHRP", "chrp" },
{ "Amiga", "amiga" },
{ "64-bit iSeries Logical Partition", "iseries" },
{ NULL, NULL }
This means your machine should probably have been detected as chrp, but we
would need the /proc/cpuinfo to be sure.
BTW, Harald, can you also check your boards for the iseries thingy, since we
will need to distinguish (for kernel installer at least), between the
pre-power5 iseries and the newer stuff which are just pseries in disguise.