source: rtems/bsps/x86_64/amd64/start/start.c @ 76c03152

5
Last change on this file since 76c03152 was 76c03152, checked in by Amaan Cheval <amaan.cheval@…>, on Jul 9, 2018 at 11:12:56 AM

bsp/x86_64: Minimal bootable BSP

Current state:

  • Basic context initialization and switching code.
  • Stubbed console (empty functions).
  • Mostly functional linker script (may need tweaks if we ever want to move away from the large code model (see: CPU_CFLAGS).
  • Fully functional boot, by using FreeBSD's bootloader to load RTEMS's ELF for UEFI-awareness.

In short, the current state with this commit lets us boot, go through the system
initialization functions, and then call user application's Init task too.

Updates #2898.

  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 * Copyright (c) 2018.
3 * Amaan Cheval <amaan.cheval@gmail.com>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <bsp.h>
28#include <start.h>
29#include <bsp/bootcard.h>
30
31// XXX: _start can pass boot arguments to boot_card
32// https://lists.rtems.org/pipermail/devel/2018-June/022123.html
33void _start(void)
34{
35  boot_card("");
36}
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