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  • Gabe Black's avatar
    fs: Add a Coreboot Filesystem (CBFS) driver and commands · 84cd9327
    Gabe Black authored
    
    
    This change adds CBFS support and some commands to use it to u-boot. These
    commands are:
    
    cbfsinit - Initialize CBFS support and pull all metadata into RAM. The end of
    the ROM is an optional parameter which defaults to the standard 0xffffffff and
    can be used to support multiple CBFSes in a system. The last one set up with
    cbfsinit is the one that will be used.
    
    cbfsinfo - Print information from the CBFS header.
    
    cbfsls - Print out the size, type, and name of all the files in the current
    CBFS. Recognized types are translated into symbolic names.
    
    cbfsload - Load a file from CBFS into memory. Like the similar command for fat
    filesystems, you can optionally provide a maximum size.
    
    Support for CBFS is compiled in when the CONFIG_CMD_CBFS option is specified.
    
    The CBFS driver can also be used programmatically from within u-boot.
    
    If u-boot needs something out of CBFS very early before the heap is
    configured, it won't be able to use the normal CBFS support which caches some
    information in memory it allocates from the heap. The
    cbfs_file_find_uncached function searches a CBFS instance without touching
    the heap.
    
    Signed-off-by: default avatarGabe Black <gabeblack@google.com>
    Signed-off-by: default avatarStefan Reinauer <reinauer@chromium.org>
    Signed-off-by: Simon Glass's avatarSimon Glass <sjg@chromium.org>
    84cd9327