summaryrefslogtreecommitdiff
path: root/board/assabet/setup.S
diff options
context:
space:
mode:
authorwdenk <wdenk>2004-04-15 23:23:39 +0000
committerwdenk <wdenk>2004-04-15 23:23:39 +0000
commitea66bc8804b66633faae5b7066571c9d68b4d14a (patch)
treee5b4c3c3d36b0b27c4f3850f6efb56528966e77c /board/assabet/setup.S
parentdb01a2ea991b539ffbd36ab952fcf2e754789a83 (diff)
downloadu-boot-imx-ea66bc8804b66633faae5b7066571c9d68b4d14a.zip
u-boot-imx-ea66bc8804b66633faae5b7066571c9d68b4d14a.tar.gz
u-boot-imx-ea66bc8804b66633faae5b7066571c9d68b4d14a.tar.bz2
* Patch by George G. Davis, 02 Apr 2004:
add support for Intel Assabet board
Diffstat (limited to 'board/assabet/setup.S')
-rw-r--r--board/assabet/setup.S136
1 files changed, 136 insertions, 0 deletions
diff --git a/board/assabet/setup.S b/board/assabet/setup.S
new file mode 100644
index 0000000..fefb431
--- /dev/null
+++ b/board/assabet/setup.S
@@ -0,0 +1,136 @@
+/*
+ * 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)
+ * 2004 (c) MontaVista Software, Inc.
+ *
+ * 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"
+
+
+/*-----------------------------------------------------------------------
+ * Board defines:
+ */
+
+#define MDCNFG 0x00
+#define MDCAS00 0x04
+#define MDCAS01 0x08
+#define MDCAS02 0x0C
+#define MSC0 0x10
+#define MSC1 0x14
+#define MECR 0x18
+#define MDREFR 0x1C
+#define MDCAS20 0x20
+#define MDCAS21 0x24
+#define MDCAS22 0x28
+#define MSC2 0x2C
+#define SMCNFG 0x30
+
+#define ASSABET_BCR (0x12000000)
+#define ASSABET_BCR_DB1110 (0x00a07490 | (0<<16) | (0<<17))
+#define ASSABET_SCR_nNEPONSET (1 << 9)
+#define NEPONSET_LEDS (0x10000010)
+
+
+/*-----------------------------------------------------------------------
+ * Setup parameters for the board:
+ */
+
+
+MEM_BASE: .long 0xa0000000
+MEM_START: .long 0xc0000000
+
+mdcnfg: .long 0x72547254
+mdcas00: .long 0xaaaaaa7f
+mdcas01: .long 0xaaaaaaaa
+mdcas02: .long 0xaaaaaaaa
+msc0: .long 0x4b384370
+msc1: .long 0x22212419
+mecr: .long 0x994a994a
+mdrefr: .long 0x04340327
+mdcas20: .long 0xaaaaaa7f
+mdcas21: .long 0xaaaaaaaa
+mdcas22: .long 0xaaaaaaaa
+msc2: .long 0x42196669
+smcnfg: .long 0x00000000
+
+BCR: .long ASSABET_BCR
+BCR_DB1110: .long ASSABET_BCR_DB1110
+LEDS: .long NEPONSET_LEDS
+
+
+ .globl memsetup
+memsetup:
+
+ /* Setting up the memory and stuff */
+
+ ldr r0, MEM_BASE
+ ldr r1, mdcas00
+ str r1, [r0, #MDCAS00]
+ ldr r1, mdcas01
+ str r1, [r0, #MDCAS01]
+ ldr r1, mdcas02
+ str r1, [r0, #MDCAS02]
+ ldr r1, mdcas20
+ str r1, [r0, #MDCAS20]
+ ldr r1, mdcas21
+ str r1, [r0, #MDCAS21]
+ ldr r1, mdcas22
+ str r1, [r0, #MDCAS22]
+ ldr r1, mdrefr
+ str r1, [r0, #MDREFR]
+ ldr r1, mecr
+ str r1, [r0, #MECR]
+ 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]
+
+ ldr r1, mdcnfg
+ str r1, [r0, #MDCNFG]
+
+ /* Load something to activate bank */
+ ldr r2, MEM_START
+.rept 8
+ ldr r3, [r2]
+.endr
+
+ /* Enable SDRAM */
+ orr r1, r1, #0x00000001
+ str r1, [r0, #MDCNFG]
+
+ ldr r1, BCR
+ ldr r2, BCR_DB1110
+ str r2, [r1]
+
+ ldr r1, LEDS
+ mov r0, #0x3
+ str r0, [r1]
+
+ /* All done... */
+ mov pc, lr