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authorwdenk <wdenk>2004-04-15 23:23:39 +0000
committerwdenk <wdenk>2004-04-15 23:23:39 +0000
commitea66bc8804b66633faae5b7066571c9d68b4d14a (patch)
treee5b4c3c3d36b0b27c4f3850f6efb56528966e77c /board/assabet/assabet.c
parentdb01a2ea991b539ffbd36ab952fcf2e754789a83 (diff)
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* Patch by George G. Davis, 02 Apr 2004:
add support for Intel Assabet board
Diffstat (limited to 'board/assabet/assabet.c')
-rw-r--r--board/assabet/assabet.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/board/assabet/assabet.c b/board/assabet/assabet.c
new file mode 100644
index 0000000..0958c33
--- /dev/null
+++ b/board/assabet/assabet.c
@@ -0,0 +1,121 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * 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 <common.h>
+#include <SA-1100.h>
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Board dependent initialisation
+ */
+
+#define ECOR 0x8000
+#define ECOR_RESET 0x80
+#define ECOR_LEVEL_IRQ 0x40
+#define ECOR_WR_ATTRIB 0x04
+#define ECOR_ENABLE 0x01
+
+#define ECSR 0x8002
+#define ECSR_IOIS8 0x20
+#define ECSR_PWRDWN 0x04
+#define ECSR_INT 0x02
+#define SMC_IO_SHIFT 2
+#define NCR_0 (*((volatile u_char *)(0x100000a0)))
+#define NCR_ENET_OSC_EN (1<<3)
+
+static inline u8
+readb(volatile u8 * p)
+{
+ return *p;
+}
+
+static inline void
+writeb(u8 v, volatile u8 * p)
+{
+ *p = v;
+}
+
+static void
+smc_init(void)
+{
+ u8 ecor;
+ u8 ecsr;
+ volatile u8 *addr = (volatile u8 *)(0x18000000 + (1 << 25));
+
+ NCR_0 |= NCR_ENET_OSC_EN;
+ udelay(100);
+
+ ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET;
+ writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT));
+ udelay(100);
+
+ /*
+ * The device will ignore all writes to the enable bit while
+ * reset is asserted, even if the reset bit is cleared in the
+ * same write. Must clear reset first, then enable the device.
+ */
+ writeb(ecor, addr + (ECOR << SMC_IO_SHIFT));
+ writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT));
+
+ /*
+ * Set the appropriate byte/word mode.
+ */
+ ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
+ ecsr |= ECSR_IOIS8;
+ writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
+ udelay(100);
+}
+
+static void
+neponset_init(void)
+{
+ smc_init();
+}
+
+int
+board_init(void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_arch_number = 25; /* Intel Assabet Board */
+ gd->bd->bi_boot_params = 0xc0000100;
+
+ neponset_init();
+
+ return 0;
+}
+
+int
+dram_init(void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+ return (0);
+}