arm: rpi: Increase headroom available to kernel image when relocated (!116) · Merge requests · pkg / u-boot

Closed Martyn Welch requested to merge wip/martyn/rpi-kernel-headroom into apertis/v2025dev3 9 months ago

Jul 08, 2024

Release u-boot version 2024.01+dfsg-1+apertis7 · 67cb2830
Martyn Welch authored 9 months ago
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Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
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67cb2830

arm: rpi: Increase headroom available to kernel image when relocated · 304931a6

Martyn Welch authored 9 months ago


We are seeing the following issue booting when moving to the v6.8.x
kernel releases:

   Moving Image from 0x80000 to 0x200000, end=2600000
   ## Flattened Device Tree blob at 02600000
      Booting using the fdt blob at 0x2600000
   ERROR: FDT image overlaps OS image (OS=0x200000..0x2600000)

This is a result of the kernel images now reporting a size of 36MB and
just hitting the offset used for the DTB when the kernel is relocated to
a 2MB boundary (as is required for booting).

The kernel is being loaded at 0x80000 on the assumption that the kernel
image would be compressed. Our kernel isn't compressed, so copy to the
required boot location to avoid the need to relocate.

This frees up 1.5MB before the kernel image, so shift the PXE and script
load locations to before the kernel. Shift up the DTB and initrd
allocations to increase the kernel allocation to 50MB, giving headroom
for the kernel image to grow.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

304931a6

arm: rpi: Increase headroom available to kernel image when relocated

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