Idea for change to boot0
Craig Rodrigues
rodrigc at crodrigues.org
Thu Dec 15 23:40:48 UTC 2011
Hi,
This is interesting. I wrote some newer documentation for PXE booting
here:
http://www.freebsd.org/doc/handbook/network-pxe-nfs.html
In 32.8.4, bullet item 1, I mentioned that it is necessary to
configure network booting in the BIOS menu.
With your change, is entering the BIOS menu to configure network booting
still necessary?
--
Craig Rodrigues
rodrigc at juniper.net
On Thu, Dec 15, 2011 at 1:21 PM, Andrew Boyer <aboyer at averesystems.com> wrote:
> These two changes allow you to set PXE as the default MBR boot selection, which enables you to write a 'reboot to the network' script. We've found it to be very useful. What do people think?
>
> Thanks,
> Andrew
>
>> Index: usr.sbin/boot0cfg/boot0cfg.c
>> ===================================================================
>> --- usr.sbin/boot0cfg/boot0cfg.c (revision 228359)
>> +++ usr.sbin/boot0cfg/boot0cfg.c (working copy)
>> @@ -169,7 +169,7 @@
>> o_flag = 1;
>> break;
>> case 's':
>> - s_arg = argtoi(optarg, 1, 5, 's');
>> + s_arg = argtoi(optarg, 1, 6, 's');
>> break;
>> case 't':
>> t_arg = argtoi(optarg, 1, 0xffff, 't');
>> @@ -472,6 +472,8 @@
>> printf("default_selection=F%d (", mbr[OFF_OPT] + 1);
>> if (mbr[OFF_OPT] < 4)
>> printf("Slice %d", mbr[OFF_OPT] + 1);
>> + else if (mbr[OFF_OPT] == 5)
>> + print("PXE");
>> else
>> printf("Drive 1");
>> printf(")\n");
>> Index: sys/boot/i386/boot0/boot0.S
>> ===================================================================
>> --- sys/boot/i386/boot0/boot0.S (revision 228359)
>> +++ sys/boot/i386/boot0/boot0.S (working copy)
>> @@ -413,6 +413,7 @@
>> 3:
>> #endif /* ONLY_F_KEYS */
>> #endif /* SIO */
>> +check_selection:
>> cmpb $0x5,%al # F1..F6 or 1..6 ?
>> #ifdef PXE /* enable PXE/INT18 using F6 */
>> jne 1f;
>> @@ -421,7 +422,6 @@
>> #endif /* PXE */
>> jae beep # Not in F1..F5, beep
>>
>> -check_selection:
>> /*
>> * We have a selection. If it's a bad selection go back to complain.
>> * The bits in MNUOPT were set when the options were printed.
>
> --------------------------------------------------
> Andrew Boyer aboyer at averesystems.com
>
>
>
>
> _______________________________________________
> freebsd-current at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-current
> To unsubscribe, send any mail to "freebsd-current-unsubscribe at freebsd.org"
--
Craig Rodrigues
rodrigc at crodrigues.org
More information about the freebsd-current
mailing list