Added initial eNET board support

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

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