On Wed, Jan 20, 2021 at 09:54:53AM +0100, Neil Armstrong wrote:
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: Jernej Škrabec jernej.skrabec@siol.net Reviewed-by: Jernej Škrabec jernej.skrabec@siol.net Signed-off-by: Neil Armstrong narmstrong@baylibre.com
Applied to u-boot/master, thanks!