Subversion Repositories HelenOS

#

# Copyright (c) 2005 Jakub Jermar

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# - Redistributions of source code must retain the above copyright

#   notice, this list of conditions and the following disclaimer.

# - 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.

# - The name of the author may not be used to endorse or promote products

#   derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <arch/asm/regname.h>

#include <arch/boot/boot.h>

.section K_TEXT_START, "ax"

.global kernel_image_start

kernel_image_start:

	# load temporal kernel stack

	lis sp, kernel_stack@ha

	addi sp, sp, kernel_stack@l

	# set kernel stack for interrupt handling

	mr r31, sp

	subis r31, r31, 0x8000

	mtsprg0 r31

	# r3 contains physical address of bootinfo_t

	# r4 contains size of bootinfo_t

	addis r3, r3, 0x8000

	lis r31, bootinfo@ha

	addi r31, r31, bootinfo@l  # r31 = bootinfo

	cmpwi r4, 0

	beq bootinfo_end

	bootinfo_loop:

		lwz r30, 0(r3)

		stw r30, 0(r31)

		addi r3, r3, 4

		addi r31, r31, 4

		subi r4, r4, 4

		cmpwi r4, 0

		bgt bootinfo_loop

	bootinfo_end:

	bl arch_pre_main

	b main_bsp

.section K_DATA_START, "aw", @progbits

.align 12

kernel_stack_bottom:

	.space TEMP_STACK_SIZE

kernel_stack: