void kernel_start(uint32_t magic, uint32_t addr)
{
PRATTLE("\n////////////////// IncludeOS kernel start ////////////////// \n");
PRATTLE("* Booted with magic 0x%x, grub @ 0x%x \n",
magic, addr);
// generate checksums of read-only areas etc.
__init_sanity_checks();
PRATTLE("* Grub magic: 0x%x, grub info @ 0x%x\n", magic, addr);
// Determine where free memory starts
extern char _end;
uintptr_t free_mem_begin = reinterpret_cast<uintptr_t>(&_end);
uintptr_t memory_end = kernel::memory_end();
if (magic == MULTIBOOT_BOOTLOADER_MAGIC) {
free_mem_begin = _multiboot_free_begin(addr);
memory_end = _multiboot_memory_end(addr);
}
else if (kernel::is_softreset_magic(magic))
{
memory_end = kernel::softreset_memory_end(addr);
}
PRATTLE("* Free mem begin: 0x%zx, memory end: 0x%zx \n",
free_mem_begin, memory_end);
PRATTLE("* Moving symbols. \n");
// Preserve symbols from the ELF binary
free_mem_begin += _move_symbols(free_mem_begin);
PRATTLE("* Free mem moved to: %p \n", (void*) free_mem_begin);
PRATTLE("* Init .bss\n");
_init_bss();
// Instantiate machine
size_t memsize = memory_end - free_mem_begin;
__machine = os::Machine::create((void*)free_mem_begin, memsize);
PRATTLE("* Init ELF parser\n");
_init_elf_parser();
// Begin portable HAL initialization
__machine->init();
// TODO: Move more stuff into Machine::init
RNG::init();
PRATTLE("* Init syscalls\n");
_init_syscalls();
PRATTLE("* Init CPU exceptions\n");
x86::idt_initialize_for_cpu(0);
x86::init_libc(magic, addr);
}
void kernel_start(uintptr_t magic, uintptr_t addr)
{
// Initialize default serial port
__init_serial1();
// generate checksums of read-only areas etc.
__init_sanity_checks();
// Determine where free memory starts
extern char _end;
uintptr_t free_mem_begin = reinterpret_cast<uintptr_t>(&_end);
if (magic == MULTIBOOT_BOOTLOADER_MAGIC) {
free_mem_begin = _multiboot_free_begin(addr);
}
// Preserve symbols from the ELF binary
free_mem_begin += _move_symbols(free_mem_begin);
// Initialize zero-initialized vars
_init_bss();
// Initialize heap
_init_heap(free_mem_begin);
// Initialize stack-unwinder, call global constructors etc.
_init_c_runtime();
// Initialize system calls
_init_syscalls();
// Initialize early OS, platform and devices
OS::start(magic, addr);
// Initialize common subsystems and call Service::start
OS::post_start();
// verify certain read-only sections in memory
kernel_sanity_checks();
// Starting event loop from here allows us to profile OS::start
OS::event_loop();
}