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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2026 Richard QIn
*/
#include "common/types.h"
#include "kernel/riscv.h"
#include "drivers/uart.h"
#include "drivers/plic.h"
#include "drivers/virtio.h"
#include "kernel/pmm.h"
#include "kernel/mm.h"
#include "kernel/slab.h"
#include "kernel/proc.h"
#include "kernel/trap.h"
#include "kernel/timer.h"
#include "kernel/cpu.h"
#include "kernel/buf.h"
#include "fs/fs.h"
#include "fs/file.h"
#include "fs/fat32.h"
#include "lib/string.h"
#include "kernel/fdt.h" // fdt_parse
extern uint64 g_dtb_addr;
// Placement new support (referenced from cxx.cc)
void *operator new(unsigned long size, void *ptr);
volatile static int started = 0;
extern "C" void kernel_main(uint64 hartid, uint64 dtb)
{
if (hartid == 0)
{
fdt_parse(dtb);
Drivers::uart_init();
Drivers::uart_puts("\n[Lume OS] Booting...\n");
Drivers::uart_puts("[Boot] PMP configured.\n");
PMM::init(); // Physical Memory Management
VM::kvminit(); // Kernel Pagetable
VM::kvminithart(); // Enable MMU
Slab::init();
Trap::init(); // Trap Management
Trap::inithart();
PLIC::init();
PLIC::inithart();
VirtIO::init();
BufferCache::init();
VFS::init();
// Initialize global FAT32 object manually (global constructors not supported yet)
new (&fat32_fs) FAT32FileSystem();
VFS::register_fs(&fat32_fs);
FileTable::init();
Timer::init();
ProcManager::init(); // Process Management
ProcManager::user_init(); // Initialize first user process
__atomic_store_n(&started, 1, __ATOMIC_RELEASE);
Drivers::uart_puts("[Boot] System initialized. Entering scheduler...\n");
}
else
{
while (__atomic_load_n(&started, __ATOMIC_ACQUIRE) == 0)
;
VM::kvminithart();
Trap::inithart();
PLIC::inithart();
Timer::init();
Drivers::uart_puts("[Boot] Hart started.\n");
}
ProcManager::scheduler(); // Enable Scheduler
}
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