configs: db820c: set bootm_size

set bootm_size to the memory available to safely contain a kernel,
device tree and initrd for relocation.

Signed-off-by: Jorge Ramirez-Ortiz <jorge at foundries.io>
---
 include/configs/dragonboard820c.h | 1 +
 1 file changed, 1 insertion(+)

On Tue, Jan 28, 2020 at 11:05:28PM +0100, Jorge Ramirez-Ortiz wrote:

> set bootm_size to the memory available to safely contain a kernel,
> device tree and initrd for relocation.
> 
> Signed-off-by: Jorge Ramirez-Ortiz <jorge at foundries.io>
> ---
>  include/configs/dragonboard820c.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/configs/dragonboard820c.h b/include/configs/dragonboard820c.h
> index 4256e6f060..d7bfb7a100 100644
> --- a/include/configs/dragonboard820c.h
> +++ b/include/configs/dragonboard820c.h
> @@ -48,6 +48,7 @@
>  	"ramdisk_addr_r=0x91000000\0"\
>  	"scriptaddr=0x90000000\0"\
>  	"pxefile_addr_r=0x90100000\0"\
> +	"bootm_size=0x8000000"\
>  	BOOTENV
>  
>  /* Size of malloc() pool */

We need to also remove fdt_high while we do this.  And per the email I
sent out today it would be good to audit the rest of the variables wrt
booti (in this case) usage.  It would be good to confirm we don't want
to have initrd relocation.  In the case of this platform, I would
strongly encourage that as it places the initrd below the fdt and kernel
and there is a long history of reports of problems later on with large
initrds stomping over things, or being stomped over (load initrd, load
fdt, load kernel, raw initrd support so kernel fails to find valid
initrd is the failure).  Thanks!