On Mon, 9 Dec 2024 at 19:55, Simon Glass <[email protected]> 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. >
How does this work for a device with < 256Mb of RAM? There's a number of the original RPi series that have 256Mb of RAM and that equates to less than that due to reservations for the vendor firmware. > Signed-off-by: Simon Glass <[email protected]> > Reviewed-by: Tom Rini <[email protected]> > Suggested-by: Tom Rini <[email protected]> > --- > > 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 > -- > 2.34.1 > >
