|
From: Matthew S. <sta...@ho...> - 2002-12-12 22:56:43
|
> >How should I submit the changes to the code or has this problem >That's >wonderful, you've finally fixed a long standing bug. If the fixes >aren't too large, say > 10kB, just post them to this developer list Here is the code to fixed the problem with net booting dos with PXE to EB to DOS. The line numbers lists are from the original code. Changes to src/loader.S: lines 209 - 212 pnpentry: movw $0,%ax #else /* PXELOADER */ #define PXENV_STOP_UNDI 0x15 #define PXENV_UNDI_SHUTDOWN 0x05 lines 244 - 247 hellomsgend: pxe_stop_undi_pkt: .word 0 pxe_undi_shutdown_pkt: .word 0 pxe_unload_stack_pkt: lines 318 - 327 pushw %cs pushw $pxe_undi_shutdown_pkt pushw $PXENV_UNDI_SHUTDOWN lcall *%cs:(PXEEntry-_start) add $6, %sp pushw %cs pushw $pxe_stop_undi_pkt pushw $PXENV_STOP_UNDI lcall *%cs:(PXEEntry-_start) add $6, %sp pushw %cs pushw $pxe_unload_stack_pkt pushw $PXENV_UNLOAD_STACK lcall *%cs:(PXEEntry-_start) add $6, %sp lines 367 - 380 (Turn memory count into ASCII hexadecimal characters) mov %bl, %al shr $4, %al /* daa cmp $9, %al sbb $0xcf, %al */ cmp $10, %al /* These three lines written by Norbert Juffa <nor...@am...> */ sbb $0x69, %al das mov %al, pxeKmsg-_start+3 mov %bl, %al and $0x0f, %al /* daa */ /* no carry here */ /* cmp $9, %al sbb $0xcf, %al */ cmp $10, %al sbb $0x69, %al das mov %al, pxeKmsg-_start+4 movw $0x0a0d, pxemsg-_start /* "\r\n" */ The three new lines to convert hex into ASCII characters were found at the following web site: http://www.df.lth.se/~john_e/gems/gem003a.html. NOTE: Since this was a quick fix, there is no error checking. If anyone has any older versions of the PXE Specifications they might want to check if PXENV_STOP_UNDI has always been implemented or if it's definitions are any different to the definition in version 2.1 and whether that will effect this new code. >Great. If you like reading the PXE spec, maybe you can do Etherboot on top >of >PXE's UNDI without using an Etherboot's native network driver :). This, of >course, is an option in addition to using the native driver. Is anyone else already working on an Etherboot UNDI driver? I am interested in working on one, but probably won't be able to start for a while. Matthew Stapleton Email: sta...@ho... _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus |
