[PATCH v4 2/5] rpi: Set bootm_size to 512MB

[Christopher Obbard]

Hi Simon,

On Thu, 2024-12-19 at 17:34 -0700, Simon Glass wrote:
> Set this option so that all boot images stay within the bottom 512MB
> of
> memory. This should allow us to drop the fdt_high and initrd_high
> options.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Tom Rini <trini at konsulko.com>
> Suggested-by: Tom Rini <trini at konsulko.com>

Reviewed-by: Christopher Obbard <christopher.obbard at linaro.org>
Tested-by: Christopher Obbard <christopher.obbard at linaro.org> # CM4 1G

> ---
> 
> (no changes since v3)
> 
> Changes in v3:
> - Add to the existing comment block
> 
> Changes in v2:
> - Add new patch to set bootm_size
> 
>  board/raspberrypi/rpi/rpi.env | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/board/raspberrypi/rpi/rpi.env
> b/board/raspberrypi/rpi/rpi.env
> index 30228285edd..a327fccc77f 100644
> --- a/board/raspberrypi/rpi/rpi.env
> +++ b/board/raspberrypi/rpi/rpi.env
> @@ -60,7 +60,12 @@ dfu_alt_info+=zImage fat 0 1
>   * Even with the smallest possible CPU-GPU memory split of the CPU
> getting
>   * only 64M, the remaining 25M starting at 0x02700000 should allow
> quite
>   * large initrds before they start colliding with U-Boot.
> + *
> + * Limit bootm_size to 512MB so that all boot images stay within the
> bottom
> + * 512MB of memory
>   */
> +bootm_size=0x20000000
> +
>  #ifdef CONFIG_ARM64
>  fdt_high=ffffffffffffffff
>  initrd_high=ffffffffffffffff