x15/kern/kernel.c

/*
 * Copyright (c) 2011-2017 Richard Braun.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <kern/init.h>
#include <kern/kernel.h>
#include <kern/log.h>
#include <kern/thread.h>
#include <machine/cpu.h>

#include <test/test.h>

#include <vm/page.h>

void __init
kernel_main (void)
{
  assert (!cpu_intr_enabled ());

  init_setup ();
  vm_page_info (log_stream_info ());

#ifdef CONFIG_RUN_TEST
  test_setup ();
#endif

  /*
   * Enabling application processors is done late in the boot process for
   * two reasons :
   *  - It's much simpler to bootstrap with interrupts disabled on all
   *    processors, enabling them only when necessary on the BSP.
   *  - Depending on the architecture, the pmap module could create per
   *    processor page tables. Once done, keeping the kernel page tables
   *    synchronized requires interrupts (and potentially scheduling)
   *    enabled on all processors.
   *
   * It is highly recommended not to do anything else than starting the
   * scheduler right after this call.
   */
  cpu_mp_setup ();
  thread_run_scheduler ();
  __builtin_unreachable ();
}

void __init
kernel_ap_main (void)
{
  assert (!cpu_intr_enabled ());
  thread_run_scheduler ();
}