Re: 24.3. Updating Bootcode

Hi,

And it's done:
---
 Boot0007* FreeBSD-14
HD(1,GPT,73acd1b2-de41-11eb-8156-002b67dfc673,0x28,0x82000)/File(\efi\freebsd\loader.efi)
                         nvd0p1:/efi/freebsd/loader.efi
/boot/efi//efi/freebsd/loader.efi
+Boot0006* FreeBSD-14_old
HD(1,GPT,73acd1b2-de41-11eb-8156-002b67dfc673,0x28,0x82000)/File(\efi\freebsd\loader-old.efi)
                             nvd0p1:/efi/freebsd/loader-old.efi
/boot/efi//efi/freebsd/loader-old.efi
 Boot0004* Windows Boot Manager
HD(1,GPT,8c497825-1db2-41f8-8924-85dfd0bb7283,0x800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)
                                   da1p1:/EFI/Microsoft/Boot/bootmgfw.efi
(null)
 Boot0000* EFI Hard Drive (SAMSUNG MZVLB1T0HBLR-000L2)
PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/NVMe(0x1,39-f9-b8-01-81-38-25-00)/HD(1,GPT,73acd1b2-de41-11eb-8156-002b67dfc673,0x28,0x82000)
---
and I can choose "FreeBSD-14"(<ESP>/efi/freebsd/loader.efi),
"FreeBSD-14_old"(<ESP>/efi/freebsd/loader-old.efi) and "EFI Hard
Drive"(legacy <ESP>/efi/bootx64.efi) from BIOS.

NOTE: efibootmgr(8) example is:
---
efibootmgr -a -c -l /boot/efi/EFI/freebsd/loader.efi -L FreeBSD-11
                                          ^^^
---
But I choosed "efi" instead of "EFI"...

Thanks all for helping me understand it!

Cheers,


Warner Losh <imp@bsdimp.com> escreveu no dia terça, 16/08/2022 à(s) 18:19:

>
>
> On Tue, Aug 16, 2022 at 6:01 AM Nuno Teixeira <eduardo@freebsd.org> wrote:
>
>> Hi Toomas,
>>
>> For better OS support, the UEFI specification (UEFI 2.8A Feb 14, page
>>> 499) is suggesting to use structure like:
>>>
>>> <ESP>/efi/<OS>/…
>>>
>>> And to use this suggestion, it means the UEFI Boot Manager needs to be
>>> configured (see efibootmgr(8)).
>>>
>>> Therefore, once you have set up OS specific setup, there is no use for
>>> default (<ESP>/efi/boot/…) and you need to update one or another, but not
>>> both.
>>>
>>
>> FreeBSD have <ESP>/efi/freebsd/... but it's not configured in efibootmgr:
>>
>
> The current default installer will do this, but older upgraded systems
> don't do this by default. Likely you are looking at an older
> system and/or one of the 'bad actors' that reset this stuff between boots.
>
>
>> efibootmgr -v:
>> ---
>> BootOrder  : 0004, 0000, 2002, 2003, 2001
>> Boot0004* Windows Boot Manager
>> HD(1,GPT,8c497825-1db2-41f8-8924-85dfd0bb7283,0x800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)
>>                                    da0p1:/EFI/Microsoft/Boot/bootmgfw.efi
>> (null)
>> +Boot0000* EFI Hard Drive (SAMSUNG MZVLB1T0HBLR-000L2)
>> PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/NVMe(0x1,39-f9-b8-01-81-38-25-00)/HD(1,GPT,73acd1b2-de41-11eb-8156-002b67dfc673,0x28,0x82000)
>>  Boot2002* EFI DVD/CDROM
>>  Boot2003* EFI Network
>>  Boot2001* EFI USB Device
>> ---
>> so boot is definitely using <ESP>/efi/boot/bootx64.efi @Boot0000
>>
>
> In your case, that's true. The "EFI Hard Drive" is a default entry the
> UEFI BIOS created for you.
>
>
>> I think I can create a new boot:
>> ---
>> efibootmgr -a -c -l /boot/efi/efi/freebsd/loader.efi -L FreeBSD-14
>> (and make it active)
>> efibootmgr -a -b NNNN
>> ---
>> and create other for loader.efi.old in case of problems.
>>
>
> Yes.
>
>
>> In this case I will need only update <ESP>/efi/freebsd/loader.efi.
>>
>> Q: for what has been said in mailing, boot is compiled in /usr/src/stand,
>> isn't a good idea that when it install new boot it backup old boot like
>> /boot/kernel -> /boot/kernel.old?
>>
>
> Yes. In fact that's what's done, but only for the BIOS version. We should
> do the same for efi but don't seem to do so currently. But that's likely
> tied up behind issues of installing things automatically into the ESP on
> 'installworld'.
>
> Warner
>


-- 
Nuno Teixeira
FreeBSD Committer (ports)