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authorwdenk <wdenk>2005-04-02 23:52:25 +0000
committerwdenk <wdenk>2005-04-02 23:52:25 +0000
commit400558b561e2bdb47f87b96b3510dda0881a3662 (patch)
tree479fa3918e0031a95cdac9468cb8396e1f1a9b60 /board/dnp1110/lowlevel_init.S
parent414eec35e3832f4f9ce8a25ace7ead638be1f76f (diff)
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Prepare for SoC rework of ARM code:
- rename CONFIG_BOOTBINFUNC into CONFIG_INIT_CRITICAL - rename memsetup into lowlevel_init (function name and source files)
Diffstat (limited to 'board/dnp1110/lowlevel_init.S')
-rw-r--r--board/dnp1110/lowlevel_init.S135
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