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authorStefan Roese <sr@denx.de>2009-01-21 17:24:39 +0100
committerShinya Kuribayashi <skuribay@ruby.dti.ne.jp>2009-01-27 23:08:08 +0900
commit50752790bc9285c0c1c5235e88f3a4ef2eec1e72 (patch)
tree6b1573d1cfe395297c0714b040bd98eb37c3b64c /board/micronas/vct/ebi.h
parent03d3bfb00806b5441f1871c7408c1749863e0fdc (diff)
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MIPS: Add VCT board series support (Part 1/3)
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/micronas/vct/ebi.h')
-rw-r--r--board/micronas/vct/ebi.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/board/micronas/vct/ebi.h b/board/micronas/vct/ebi.h
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+/*
+ * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
+ *
+ * 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
+ */
+
+#ifndef __EBI__
+#define __EBI__
+
+#include <common.h>
+#include <asm/io.h>
+#include "vct.h"
+
+#define EXT_DEVICE_CHANNEL_3 (0x30000000)
+#define EXT_DEVICE_CHANNEL_2 (0x20000000)
+#define EXT_DEVICE_CHANNEL_1 (0x10000000)
+#define EXT_CPU_ACCESS_ACTIVE (0x00000001)
+#define EXT_DMA_ACCESS_ACTIVE (1 << 14)
+#define EXT_CPU_IORDY_SL (0x00000001)
+
+#define EBI_CPU_WRITE (1 << 31)
+#define EBI_CPU_ID_SHIFT (28)
+#define EBI_CPU_ADDR_MASK ~(~0UL << EBI_CPU_ID_SHIFT)
+
+/* position of various bit slices in timing register EBI_DEV[01]_TIM1_RD1 */
+#define ADDR_LATCH_ENABLE 0
+#define ADDR_ACTIVATION 4
+#define CHIP_SELECT_START 8
+#define OUTPUT_ENABLE_START 12
+#define WAIT_TIME 28
+#define READ_DURATION 20
+
+/* position of various bit slices in timing register EBI_DEV[01]_TIM1_RD2 */
+#define OUTPUT_ENABLE_END 0
+#define CHIP_SELECT_END 4
+#define ADDR_DEACTIVATION 8
+#define RECOVER_TIME 12
+#define ACK_TIME 20
+
+/* various bits in configuration register EBI_DEV[01]_CONFIG1 */
+#define EBI_EXTERNAL_DATA_8 (1 << 8)
+#define EBI_EXT_ADDR_SHIFT (1 << 22)
+#define EBI_EXTERNAL_DATA_16 EBI_EXT_ADDR_SHIFT
+#define EBI_CHIP_SELECT_1 0x2
+#define EBI_CHIP_SELECT_2 0x4
+#define EBI_BUSY_EN_RD (1 << 12)
+#define DIR_ACCESS_WRITE (1 << 20)
+#define DIR_ACCESS_MASK (1 << 20)
+
+/* various bits in configuration register EBI_DEV[01]_CONFIG2 */
+#define ADDRESS_INCREMENT_ON 0x0
+#define ADDRESS_INCREMENT_OFF 0x100
+#define QUEUE_LENGTH_1 0x40
+#define QUEUE_LENGTH_2 0x80
+#define QUEUE_LENGTH_3 0xC0
+#define QUEUE_LENGTH_4 0
+#define CPU_TRANSFER_SIZE_32 0
+#define CPU_TRANSFER_SIZE_16 0x10
+#define CPU_TRANSFER_SIZE_8 0x20
+#define READ_ENDIANNESS_ABCD 0
+#define READ_ENDIANNESS_DCBA 0x4
+#define READ_ENDIANNESS_BADC 0x8
+#define READ_ENDIANNESS_CDAB 0xC
+#define WRITE_ENDIANNESS_ABCD 0
+#define WRITE_ENDIANNESS_DCBA 0x1
+#define WRITE_ENDIANNESS_BADC 0x2
+#define WRITE_ENDIANNESS_CDAB 0x3
+
+/* various bits in configuration register EBI_CTRL_SIG_ACTLV */
+#define IORDY_ACTIVELEVEL_HIGH (1 << 14)
+#define ALE_ACTIVELEVEL_HIGH (1 << 8)
+
+/* bits in register EBI_SIG_LEVEL */
+#define IORDY_LEVEL_MASK 1
+
+static inline void ebi_wait(void)
+{
+ while (reg_read(EBI_STATUS(EBI_BASE)) & EXT_CPU_ACCESS_ACTIVE)
+ ; /* wait */
+}
+
+#endif