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
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