Initial revision

1 files changed, 94 insertions, 0 deletions

diff --git a/board/shannon/memsetup.S b/board/shannon/memsetup.S
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+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
+ *                     Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
+ *
+ * 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 <config.h>
+#include <version.h>
+
+
+/* some parameters for the board */
+
+MEM_BASE:	.long	0xa0000000
+MEM_START:	.long	0xc0000000
+
+#define	MDCNFG	0x00
+#define MDCAS0	0x04
+#define MDCAS1	0x08
+#define MDCAS2	0x0c
+#define MSC0	0x10
+#define MSC1	0x14
+#define MECR	0x18
+
+mdcas0:		.long	0xc71c703f @ cccccccf
+mdcas1:		.long	0xffc71c71 @ fffffffc
+mdcas2:		.long	0xffffffff @ ffffffff
+mdcnfg:		.long	0x0334b21f @ 9326991f
+msc0:		.long   0xfff84458 @ 42304230
+msc1:		.long	0xffffffff @ 20182018
+mecr:		.long	0x7fff7fff @ 01000000
+
+/* setting up the memory */
+
+.globl memsetup
+memsetup:
+	ldr	r0, MEM_BASE
+
+	/* Setup the flash memory */
+	ldr	r1, msc0
+	str	r1, [r0, #MSC0]
+
+	/* Set up the DRAM */
+
+	/* MDCAS0 */
+	ldr	r1, mdcas0
+	str	r1, [r0, #MDCAS0]
+
+	/* MDCAS1 */
+	ldr	r1, mdcas1
+	str	r1, [r0, #MDCAS1]
+
+	/* MDCAS2 */
+	ldr	r1, mdcas2
+	str	r1, [r0, #MDCAS2]
+
+	/* MDCNFG */
+	ldr	r1, mdcnfg
+	str	r1, [r0, #MDCNFG]
+
+	/* Set up PCMCIA space */
+	ldr	r1, mecr
+	str	r1, [r0, #MECR]
+
+	/* Load something to activate bank */
+	ldr	r1, MEM_START
+
+.rept	8
+	ldr	r0, [r1]
+.endr
+
+	/* everything is fine now */
+	mov	pc, lr
+