CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2024/02/20 18:45:14
Modified files:
sys/arch/riscv64/riscv64: machdep.c
sys/arch/arm64/arm64: machdep.c
Log message:
handle /reserved-memory nodes from device trees on arm64.
u-boot is supposed to take these entries and put them in the efi
memory map, but i keep hitting machines where an otherwise functional
u-boot does not do this, resulting in weird errors.
i have an espressobin with a vendor u-boot that has a reserved-memory
region for psci. without this diff the machine faults when the
kernel tries to reboot using a psci handler.
a macchiatobin with an otherwise working u-boot throws SErrors or
panics on weird memory corruption problems without this. i thought
it was bad RAM, but the problems persisted with completely different
ram, and very underclocked and well cooled ram.
riscv64 already has code to handle reserved-memory regions. the
riscv64 change is to add handling for the "no-map" property.
ok kettenis@
