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51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/*
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* (C) Copyright 2008
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* Graeme Russ, graeme.russ@gmail.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include "hardware.h"
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/* board early intialization */
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.globl early_board_init
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early_board_init:
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/* No 32-bit board specific initialisation */
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jmp *%ebp /* return to caller */
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.globl show_boot_progress_asm
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show_boot_progress_asm:
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movb %al, %dl /* Create Working Copy */
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andb $0x80, %dl /* Mask in only Error bit */
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shrb $0x02, %dl /* Shift Error bit to Error LED */
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andb $0x0f, %al /* Mask out 'Error' bit */
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orb %dl, %al /* Mask in ERR LED */
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movw $LED_LATCH_ADDRESS, %dx
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outb %al, %dx
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jmp *%ebp /* return to caller */
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.globl cpu_halt_asm
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cpu_halt_asm:
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movb $0x0f, %al
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movw $LED_LATCH_ADDRESS, %dx
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outb %al, %dx
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hlt
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jmp cpu_halt_asm
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