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Kernel: Add RPi Watchdog and use it for system shutdown

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The Raspberry Pi hardware doesn't support a proper software-initiated
shutdown, so this instead uses the watchdog to reboot to a special
partition which the firmware interprets as an immediate halt on
shutdown. When running under Qemu, this causes the emulator to exit.
This commit is contained in:
Daniel Bertalan 2023-05-15 07:34:19 +02:00 • committed by Andrew Kaster
parent 555d301e3b
commit d9c557d0b4
5 changed files with 80 additions and 0 deletions
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1
Kernel/CMakeLists.txt
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@ -446,6 +446,7 @@ elseif("${SERENITY_ARCH}" STREQUAL "aarch64")
Arch/aarch64/RPi/SDHostController.cpp
Arch/aarch64/RPi/Timer.cpp
Arch/aarch64/RPi/UART.cpp
Arch/aarch64/RPi/Watchdog.cpp
)
set(SOURCES_RUNNING_WITHOUT_MMU
Arch/aarch64/Exceptions.cpp