1 files changed, 135 insertions, 0 deletions
diff --git a/board/dnp1110/lowlevel_init.S b/board/dnp1110/lowlevel_init.S
new file mode 100644
index 0000000..7730be3
--- /dev/null
+++ b/board/dnp1110/lowlevel_init.S
@@ -0,0 +1,135 @@
+/*
+ * 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 MDCAS00		0x04		/* CAS waveform rotate reg 0       */
+#define MDCAS01		0x08		/* CAS waveform rotate reg 1 bank  */
+#define MDCAS02		0x0C		/* CAS waveform rotate reg 2 bank  */
+#define MDREFR		0x1C		/* DRAM refresh control reg        */
+#define MDCAS20		0x20		/* CAS waveform rotate reg 0 bank  */
+#define MDCAS21		0x24		/* CAS waveform rotate reg 1 bank  */
+#define MDCAS22		0x28		/* CAS waveform rotate reg 2 bank  */
+#define MECR		0x18		/* Expansion memory (PCMCIA) bus configuration  register */
+#define MSC0		0x10		/* static memory control reg 0     */
+#define MSC1		0x14		/* static memory control reg 1     */
+#define MSC2		0x2C		/* static memory control reg 2     */
+#define SMCNFG		0x30		/* SMROM configuration reg         */
+
+mdcas00:	.long	0x5555557F
+mdcas01:	.long	0x55555555
+mdcas02:	.long	0x55555555
+mdcas20:	.long	0x5555557F
+mdcas21:	.long	0x55555555
+mdcas22:	.long	0x55555555
+mdcnfg:		.long	0x0000B25C
+mdrefr:		.long	0x007000C1
+mecr:		.long	0x10841084
+msc0:		.long	0x00004774
+msc1:		.long	0x00000000
+msc2:		.long	0x00000000
+smcnfg:		.long	0x00000000
+
+/* setting up the memory */
+
+.globl lowlevel_init
+lowlevel_init:
+
+	ldr	r0, MEM_BASE
+
+	/* Set up the DRAM */
+
+	/* MDCAS00 */
+	ldr	r1, mdcas00
+	str	r1, [r0, #MDCAS00]
+
+	/* MDCAS01 */
+	ldr	r1, mdcas01
+	str	r1, [r0, #MDCAS01]
+
+	/* MDCAS02 */
+	ldr	r1, mdcas02
+	str	r1, [r0, #MDCAS02]
+
+	/* MDCAS20 */
+	ldr	r1, mdcas20
+	str	r1, [r0, #MDCAS20]
+
+	/* MDCAS21 */
+	ldr	r1, mdcas21
+	str	r1, [r0, #MDCAS21]
+
+	/* MDCAS22 */
+	ldr	r1, mdcas22
+	str	r1, [r0, #MDCAS22]
+
+	/* MDREFR */
+	ldr	r1, mdrefr
+	str	r1, [r0, #MDREFR]
+
+	/* Set up PCMCIA space */
+	ldr	r1, mecr
+	str	r1, [r0, #MECR]
+
+	/* Setup the flash memory and other */
+	ldr	r1, msc0
+	str	r1, [r0, #MSC0]
+
+	ldr	r1, msc1
+	str	r1, [r0, #MSC1]
+
+	ldr	r1, msc2
+	str	r1, [r0, #MSC2]
+
+	ldr	r1, smcnfg
+	str	r1, [r0, #SMCNFG]
+
+	/* MDCNFG */
+	ldr	r1, mdcnfg
+	bic	r1, r1, #0x00000001
+	str	r1, [r0, #MDCNFG]
+
+	/* Load something to activate bank */
+	ldr	r2, MEM_START
+.rept	8
+	ldr	r1, [r2]
+.endr
+
+	/* MDCNFG */
+	ldr	r1, mdcnfg
+	orr	r1, r1, #0x00000001
+	str	r1, [r0, #MDCNFG]
+
+	/* everything is fine now */
+	mov	pc, lr