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authorAlper Nebi Yasak <alpernebiyasak@gmail.com>2024-02-05 20:22:12 +0300
committerNico Huber <nico.h@gmx.de>2024-08-16 16:17:29 +0000
commit8cc1d79ed0c3e523e080b9ae9bab35bb6d70d62e (patch)
tree598671bfab219ed3d3df2807fea486d2404e0689 /util/nixshell/documentation.nix
parentde1a74454ffaaca11c6735814ad1b97cc6e522cd (diff)
mainboard/qemu-aarch64: Get top of memory from device-tree blob
Trying to probe RAM space to figure out top of memory causes an exception on AArch64 virtual machines with recent versions of QEMU, but we temporarily enable exception handlers for that and use it to help detect if a RAM address is usable or not. However, QEMU docs recommend reading device information from the device-tree blob it provides us at the start of RAM. A previous commit adds a library function to parse device-tree blob that QEMU provides us. Use it to determine top of memory in AArch64 QEMU virtual machines, but still fall back to the RAM probing approach as a last-ditch effort. Change-Id: I4cc888b57cf98e0797ce7f9ddfa2eb34d14cd9c1 Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80364 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
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