nes-proj/drivers/cpu/x86/bootstrap_quarkX1000.S

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