Luna/kernel/src/main.cpp

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#include "Log.h"
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#include "arch/CPU.h"
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#include "arch/Serial.h"
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#include "arch/Timer.h"
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#include "boot/Init.h"
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#include "config.h"
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#include "memory/MemoryManager.h"
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#include "thread/Scheduler.h"
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#include <luna/Result.h>
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#include <luna/Units.h>
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void print_in_loop()
{
while (true)
{
CPU::disable_interrupts();
Serial::printf("%lu", Scheduler::current()->id);
CPU::enable_interrupts();
}
}
void print_one_and_then_yield()
{
while (true)
{
CPU::disable_interrupts();
Serial::printf("%lu", Scheduler::current()->id);
kernel_yield();
CPU::enable_interrupts();
}
}
Result<void> init()
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{
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kinfoln("Starting Moon %s", MOON_VERSION);
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kinfoln("Current platform: %s", CPU::platform_string());
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kinfoln("Current processor: %s", CPU::identify().value_or("(unknown)"));
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Timer::init();
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char buffer[64];
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to_dynamic_unit(MemoryManager::total(), buffer, sizeof(buffer));
kinfoln("Total memory: %s", buffer);
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to_dynamic_unit(MemoryManager::free(), buffer, sizeof(buffer));
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kinfoln("Free memory: %s", buffer);
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to_dynamic_unit(MemoryManager::used(), buffer, sizeof(buffer));
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kinfoln("Used memory: %s", buffer);
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to_dynamic_unit(MemoryManager::reserved(), buffer, sizeof(buffer));
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kinfoln("Reserved memory: %s", buffer);
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Scheduler::init();
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_in_loop));
TRY(Scheduler::new_kernel_thread(print_one_and_then_yield));
CPU::platform_finish_init();
CPU::enable_interrupts();
return {};
}
extern "C" [[noreturn]] void _start()
{
Init::check_magic();
Init::early_init();
auto rc = init();
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if (rc.has_error()) kerrorln("Runtime error: %s", rc.error_string());
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CPU::idle_loop();
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}