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Diffstat (limited to 'board/eNET/eNET_start.S')
| -rw-r--r-- | board/eNET/eNET_start.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/board/eNET/eNET_start.S b/board/eNET/eNET_start.S new file mode 100644 index 0000000..1b07d62 --- /dev/null +++ b/board/eNET/eNET_start.S @@ -0,0 +1,50 @@ +/* + * (C) Copyright 2008 + * Graeme Russ, graeme.russ@gmail.com. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include "hardware.h" + +/* board early intialization */ +.globl early_board_init +early_board_init: + /* No 32-bit board specific initialisation */ + jmp *%ebp /* return to caller */ + +.globl show_boot_progress_asm +show_boot_progress_asm: + + movb %al, %dl /* Create Working Copy */ + andb $0x80, %dl /* Mask in only Error bit */ + shrb $0x02, %dl /* Shift Error bit to Error LED */ + andb $0x0f, %al /* Mask out 'Error' bit */ + orb %dl, %al /* Mask in ERR LED */ + movw $LED_LATCH_ADDRESS, %dx + outb %al, %dx + jmp *%ebp /* return to caller */ + +.globl cpu_halt_asm +cpu_halt_asm: + movb $0x0f, %al + movw $LED_LATCH_ADDRESS, %dx + outb %al, %dx + hlt + jmp cpu_halt_asm |