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serenity/Kernel/Prekernel/Arch/aarch64/init.cpp
2021-09-26 23:14:01 +00:00

50 lines
1.2 KiB
C++

/*
* Copyright (c) 2021, Nico Weber <thakis@chromium.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Types.h>
#include <Kernel/Prekernel/Arch/aarch64/Mailbox.h>
#include <Kernel/Prekernel/Arch/aarch64/UART.h>
extern "C" [[noreturn]] void halt();
extern "C" [[noreturn]] void init();
extern "C" [[noreturn]] void init()
{
auto& uart = Prekernel::UART::the();
uart.print_str("\r\nWelcome to Serenity OS!\r\n");
uart.print_str("Imagine this being your ideal operating system.\r\n");
uart.print_str("Observed deviations from that ideal are shortcomings of your imagination.\r\n\r\n");
u32 firmware_version = Prekernel::Mailbox::query_firmware_version();
uart.print_str("Firmware version: ");
uart.print_num(firmware_version);
uart.print_str("\r\n");
halt();
}
// FIXME: Share this with the Intel Prekernel.
extern size_t __stack_chk_guard;
size_t __stack_chk_guard;
extern "C" [[noreturn]] void __stack_chk_fail();
[[noreturn]] void halt()
{
for (;;) {
asm volatile("wfi");
}
}
void __stack_chk_fail()
{
halt();
}
[[noreturn]] void __assertion_failed(char const*, char const*, unsigned int, char const*)
{
halt();
}