62 lines
2.5 KiB
ArmAsm
62 lines
2.5 KiB
ArmAsm
/*
|
|
* Copyright (C) 2015, Intel Corporation. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the copyright holder nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "stacks.h"
|
|
|
|
# Multiboot
|
|
.set MAGIC_NUMBER, 0x1BADB002
|
|
.set FLAGS, 0x0
|
|
.set CHECKSUM, -MAGIC_NUMBER
|
|
|
|
.section .multiboot
|
|
.align 4
|
|
.long MAGIC_NUMBER
|
|
.long FLAGS
|
|
.long CHECKSUM
|
|
|
|
.section .boot_text
|
|
.global start
|
|
start:
|
|
cli
|
|
#if X86_CONF_PROT_DOMAINS == X86_CONF_PROT_DOMAINS__TSS
|
|
/* TSS-based protection domains use a multi-segment model that defines
|
|
* tight bounds around stacks. That means that the bottom of the stack
|
|
* has an offset of 0, which is the address of the stacks_main symbol.
|
|
* The following code computes the physical load address of the top of
|
|
* the stack, which is what should be initially used as the stack
|
|
* pointer while the flat memory model is in use.
|
|
*/
|
|
lea _sdata_addr, %eax
|
|
lea (stacks_main + STACKS_SIZE_MAIN)(%eax), %esp
|
|
#else
|
|
mov $(stacks_main + STACKS_SIZE_MAIN), %esp
|
|
#endif
|
|
call cpu_boot_stage0
|