Re: [PATCH V6 07/20] configs: am62x_evm_a53_defconfig: Switch to bootstd

[Nishanth Menon <nm@ti.com>]

On 08:48-20240220, Jan Kiszka wrote:
> On 19.02.24 19:37, Jan Kiszka wrote:
> > On 17.02.24 12:36, Alexander Sverdlin wrote:
> >> Hi Jan!
> >>
> >> On Sat, 2024-02-17 at 09:42 +0100, Jan Kiszka wrote:
> >>>> U-Boot 2024.01 (Feb 15 2024 - 01:43:17 +0100)
> >>>>
> >>>> SoC:   AM62X SR1.0 HS-FS
> >>>> Model: Texas Instruments AM625 SK
> >>>> DRAM:  2 GiB
> >>>> Core:  56 devices, 23 uclasses, devicetree: separate
> >>>> MMC:   mmc@fa10000: 0, mmc@fa00000: 1
> >>>> Loading Environment from nowhere... OK
> >>>> In:    serial@2800000
> >>>> Out:   serial@2800000
> >>>> Err:   serial@2800000
> >>>> Net:   eth0: ethernet@8000000port@1
> >>>> Hit any key to stop autoboot:  0 
> >>>> switch to partitions #0, OK
> >>>> mmc1 is current device
> >>>> SD/MMC found on device 1
> >>>> Failed to load 'uEnv.txt'
> >>>> Scanning for bootflows in all bootdevs
> >>>> Seq  Method       State   Uclass    Part  Name                      Filename
> >>>> ---  -----------  ------  --------  ----  ------------------------  ----------------
> >>>> Scanning global bootmeth 'efi_mgr':
> >>>> No EFI system partition
> >>>> No EFI system partition
> >>>> Failed to persist EFI variables
> >>>> Scanning bootdev 'mmc@fa00000.bootdev':
> >>>> Scanning bootdev 'mmc@fa10000.bootdev':
> >>>> Unknown uclass 'usb' in label
> >>>> link up on port 1, speed 100, full duplex
> >>>> BOOTP broadcast 1
> >>>> BOOTP broadcast 2
> >>>> BOOTP broadcast 3

I am pretty sure ethernet is not enabled in upstream u-boot.

> >>>> ...
> >>>> ---
> >>>>
> >>>> I suppose TI's BSP has older U-Boot... So it's not providing necessary
> >>>> script for BOOTSTD, I suppose?
> >>>>
> >>>
> >>> You can make the BeagleBone boot via EFI, but it requires a hybrid
> >>> partition table (ROM loader want DOS, EFI needs GPT). A Debian
> >>> integration with this can be found for Isar [1] in this series [2]. It's
> >>> only using upstream sources (plus still one u-boot patch to get wifi
> >>> working).
> >>>
> >>> If you want legacy script booting, I suspect you need to flip some extra
> >>> switches explicitly by now.
> >>
> >> Thanks for the hints!
> >> I'm wondering, if this was a deliberate "let's stop booting all the
> >> pre-existing embedded distros" decision? (buildroot, yocto/meta-ti...)

It was more of a "lets standardize one way of booting across all ARM
devices as much as we can" effort - EBBR and others inclusive. To that
effort,  distro_boot and bootstd have made significant steps forward.
NOTE: yocto, buildroot etc will need a few tweaks to get things
operational unfortunately. BUT, note: bootstd was what beagleplay was
introduced upstream as default in the first place - so all we are
finding is that introduced behavior.

> >>
> > 
> > FWIW, I'm not seeing other boot methods being specifically disabled in
> > beagleplay in 2024.01 or even newer. I didn't try the result, but this
> > may actually be some other issue and real bug, nothing obviously intended.
> > 
> 
> I'm not even sure about this anymore, though there is still a bug, just 
> a different one:
> 
> ...
> U-Boot 2024.04-rc2-00040-g3e6f2a94bfc (Feb 20 2024 - 08:42:59 +0100)
> 
> SoC:   AM62X SR1.0 GP
> Model: BeagleBoard.org BeaglePlay
> DRAM:  2 GiB
> Core:  98 devices, 27 uclasses, devicetree: separate
> MMC:   mmc@fa10000: 0, mmc@fa00000: 1, mmc@fa20000: 2
> Loading Environment from nowhere... OK
> In:    serial@2800000
> Out:   serial@2800000
> Err:   serial@2800000
> Net:   No ethernet found.
> 
> Press SPACE to abort autoboot in 2 seconds
> => print bootmeths 
> bootmeths=script extlinux efi pxe
> => bootflow scan -l
> Scanning for bootflows in all bootdevs
> Seq  Method       State   Uclass    Part  Name                      Filename
> ---  -----------  ------  --------  ----  ------------------------  ----------------
> Scanning bootdev 'mmc@fa00000.bootdev':
>   0  efi          ready   mmc          2  mmc@fa00000.bootdev.part_ efi/boot/bootaa64.efi
> Scanning bootdev 'mmc@fa10000.bootdev':
>   1  extlinux     ready   mmc          1  mmc@fa10000.bootdev.part_ /extlinux/extlinux.conf
> Unknown uclass 'usb' in label
> "Synchronous Abort" handler, esr 0x86000004, far 0x3030303030303840
> elr: 3030302fb0bc0840 lr : 3030302fb0bc0840 (reloc)
> elr: 3030303030303840 lr : 3030303030303840
> x0 : 00000000ffffffed x1 : 0000000000000000
> x2 : 0000000000000002 x3 : 00000000ffb49d30
> x4 : 00000000fffd4c00 x5 : 00000000ffb49d50
> x6 : 0000000000000000 x7 : 00000000ffb4e890
> x8 : 0000000000006924 x9 : 00000000ffb1212c
> x10: 0000000000000003 x11: 0000000000006914
> x12: 00000000ffb1221c x13: 00000000ffb12b40
> x14: 00000000ffb12b40 x15: 00000000ffb12535
> x16: 00000000fff8a9d4 x17: 0000000000000000
> x18: 00000000ffb23da0 x19: 0000314074726f70
> x20: 00000000fffed000 x21: 00000000fffef000
> x22: 0000000000000000 x23: 00000000fffef000
> x24: 00000000fffef000 x25: 0000000000000000
> x26: 00000000fffc7174 x27: 0000000000000000
> x28: 0000000000000000 x29: 74656e7265687465
> 
> Same with 2024.01 release.

boot_targets=mmc1 mmc0 usb pxe

networking ran into some significant challenges. I was hoping to get
networking merged but the series got offset and network never made it..
Dropping pxe from boot_targets

=> setenv boot_targets mmc1 mmc0 usb
=> print bootmeths
bootmeths=script extlinux efi pxe
=> print boot_targets
boot_targets=mmc1 mmc0 usb
=> bootflow scan -l
Scanning for bootflows in all bootdevs
Seq  Method       State   Uclass    Part  Name                      Filename
---  -----------  ------  --------  ----  ------------------------  ----------------
Scanning bootdev 'mmc@fa00000.bootdev':
  0  extlinux     ready   mmc          1  mmc@fa00000.bootdev.part_ /extlinux/extlinux.conf
Scanning bootdev 'mmc@fa10000.bootdev':
  1  extlinux     ready   mmc          1  mmc@fa10000.bootdev.part_ /extlinux/extlinux.conf
Unknown uclass 'usb' in label
No more bootdevs
---  -----------  ------  --------  ----  ------------------------  ----------------
(2 bootflows, 2 valid)
=>



-- 
Regards,
Nishanth Menon
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