• Neil Armstrong's avatar
    cmd: pxe: add support for FDT overlays · 69076dff
    Neil Armstrong authored
    
    
    This adds support for specifying FDT overlays in an extlinux/pxelinux
    configuration file.
    
    Without this, there is no simple way to apply overlays when the kernel
    and fdt is loaded by the pxe command.
    
    This change adds the 'fdtoverlays' keyword for a label, supporting multiple
    overlay files to be applied on top of the fdt specified in the 'fdt' or
    'devicetree' keyword.
    
    Example:
      label linux
        kernel /Image
        fdt /soc-board.dtb
        fdtoverlays /soc-board-function.dtbo
        append console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait
    
    This code makes usage of a new variable called fdtoverlay_addr_r used to load
    the overlay files without overwritting anything important.
    
    Cc: Tom Rini <trini@konsulko.com>
    Cc: Andre Heider <a.heider@gmail.com>
    Cc: Jernej Škrabec <jernej.skrabec@siol.net>
    Cc: Jonas Karlman <jonas@kwiboo.se>
    Tested-by: default avatarJernej Škrabec <jernej.skrabec@siol.net>
    Reviewed-by: default avatarJernej Škrabec <jernej.skrabec@siol.net>
    Signed-off-by: Neil Armstrong <narmstrong@...
    69076dff
README.pxe 10.7 KB