mirror of https://github.com/tailix/loadwarka.git
66 lines
1.6 KiB
ArmAsm
66 lines
1.6 KiB
ArmAsm
/*
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Copyright (c) 2008-2009 Micah Elizabeth Scott
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Copyright (c) 2022 Alex Kotov <kotovalexarian@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define STACK_ADDR 0x2000
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#define STAGE1_ADDR 0x7c00
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#define STAGE2_ADDR 0x7e00
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#define ADDRESS(x) (x - _start + STAGE1_ADDR)
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.code16
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.global _start
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.section .text
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_start:
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ljmp $0, $ADDRESS(start)
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disk:
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.byte 0
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start:
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cli
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xor %ax, %ax
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mov %ax, %ss
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mov %ax, %ds
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mov %ax, %es
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mov %ax, %fs
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mov %ax, %gs
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mov $STACK_ADDR, %sp
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mov %dl, ADDRESS(disk)
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mov $0x02, %ah
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mov $1, %al /* Sectors count */
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mov $0x80, %dl /* Drive */
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mov $0, %ch /* Cylinder */
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mov $0, %dh /* Head */
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mov $2, %cl /* Cylinder and sector */
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mov $0x7e00, %bx /* Address */
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int $0x13
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ljmp $0, $STAGE2_ADDR
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hang:
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cli
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hlt
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jmp hang
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