boot: image-fdt: free old dtb reservations

Add a free flag and an initial call to free allocations covered by the
global FDT. This assumes that all calls to boot_fdt_add_mem_rsv_regions
occur before the transition to the new device tree, thus we can access
the currently active device tree through the global data pointer.

This allows us to clearly indicate to the user when a device tree
reservation fails. How we handle this can still use some improvement.
Right now we'll keep the default behavior and try to boot anyway.

Fixes: 5a6aa7d5913 ("boot: fdt: Handle already reserved memory in boot_fdt_reserve_region()")
Signed-off-by: Randolph Sapp <[email protected]>
Acked-by: Ilias Apalodimas <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Fixes: tag with a 12-char hash:
Fixes: 5a6aa7d59133 ("boot: fdt: Handle already reserved memory in

0 files changed, 0 insertions, 0 deletions