BTRFS Support btrload, btrls

[Ottinger Georg]

Hi Everybody,

I am currently evaluating filesystems that can be used reliable on eMMC storage, which support transparent compression.

I see that U-Boot supports btrfs. But I don't understand how to load for example a kernel image from the fs, I was expecting 'btrload' as an analog to 'ext4load' or 'fatload'.

Is there a reason why this commands are not implemented?

When I do patch the file cmd/btfs.c to add 'btrload' I do get a working U-Boot capable of loading DT and kernal image from btrfs.

'''
char subvolname[1];

int do_btr_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{

      subvolname[0] = '\0';

      return do_load(cmdtp, flag, argc, argv, FS_TYPE_BTRFS);
}


U_BOOT_CMD(
btrload,        7,      0,      do_btr_fsload,
      "load binary file from a btr filesystem",
      "<interface> [<dev[:part]>]  <addr> <filename>\n"
      "    - Load binary file 'filename' from 'dev' on 'interface'\n"
      "      to address 'addr' from better filesystem.\n"
      "      the load stops on end of file.\n"
      "      All numeric parameters are assumed to be hex."
);
'''

Are there any known stability issues, why 'btrload' and 'btrfs' are not included in the current U-Boot?
Or is there an alternative to 'btrload' to load a kernelimage from fs to ram?

thanks,
Georg


Georg Ottinger

Software Engineer

RESEARCH & DEVELOPMENT

ABATEC GmbH

[https://abatec.at/email/phone.jpg]

+43767227720532<tel:+43767227720532>

[https://abatec.at/email/email.jpg]

g.ottinger at abatec.at<mailto:c.gebetsroither at abatec.at>

[https://abatec.at/email/site.jpg]

www.abatec.at<https://www.abatec.at/>

[https://abatec.at/email/location.jpg]

Oberregauer Straße 48, 4844 Regau

[cid:1d2b374d-7ca8-4b52-8b3c-319d1b53c9aa]



UID-Nr.: ATU67696059  Firmenbuchnummer: FN 390305d  Firmenbuchgericht: Wels

-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-zr4izvxm.png
Type: image/png
Size: 20615 bytes
Desc: Outlook-zr4izvxm.png
URL: <https://lists.denx.de/pipermail/u-boot/attachments/20230530/156beb6b/attachment.png>