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Kernel: Initialize and use interrupts in the aarch64 Kernel

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Now that everything is in place, we can actually use interrupts in the
aarch64 Kernel build. :^)
This commit is contained in:
Timon Kruiper 2022-05-30 10:29:07 +02:00 committed by Linus Groh
parent dab6dbe893
commit 1072d523e2
Notes: sideshowbarker 2024-07-17 10:30:18 +09:00 
Author: https://github.com/FireFox317
Commit: https://github.com/SerenityOS/serenity/commit/1072d523e2
Pull-request: https://github.com/SerenityOS/serenity/pull/14146
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/BertalanD
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/nico ✅
1 changed files with 14 additions and 9 deletions
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23
Kernel/Arch/aarch64/init.cpp
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@ -10,6 +10,8 @@
#include <AK/Format.h>
#include <AK/Types.h>
#include <Kernel/Arch/InterruptManagement.h>
#include <Kernel/Arch/Interrupts.h>
#include <Kernel/Arch/Processor.h>
#include <Kernel/Arch/aarch64/BootPPMParser.h>
#include <Kernel/Arch/aarch64/CPU.h>
@ -106,6 +108,10 @@ extern "C" [[noreturn]] void init()
load_kernel_symbol_table();
initialize_interrupts();
InterruptManagement::initialize();
Processor::enable_interrupts();
auto firmware_version = query_firmware_version();
dbgln("Firmware version: {}", firmware_version);
@ -117,17 +123,16 @@ extern "C" [[noreturn]] void init()
draw_logo();
}
auto& timer = RPi::Timer::the();
timer.set_interrupt_interval_usec(1'000'000);
timer.enable_interrupt_mode();
dbgln("Enter loop");
auto& timer = RPi::Timer::the();
u64 start_musec = 0;
for (;;) {
u64 now_musec;
while ((now_musec = timer.microseconds_since_boot()) - start_musec < 1'000'000)
;
start_musec = now_musec;
dbgln("Timer: {}", now_musec);
}
// This will not disable interrupts, so the timer will still fire and show that
// interrupts are working!
for (;;)
asm volatile("wfi");
}
class QueryFirmwareVersionMboxMessage : RPi::Mailbox::Message {