1 files changed, 143 insertions, 0 deletions
diff --git a/arch/arm/cpu/ixp/cpu.c b/arch/arm/cpu/ixp/cpu.c
new file mode 100644
index 000000000..ce275e5f3
--- /dev/null
+++ b/arch/arm/cpu/ixp/cpu.c
@@ -0,0 +1,143 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * 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
+ */
+
+/*
+ * CPU specific code
+ */
+
+#include <common.h>
+#include <command.h>
+#include <netdev.h>
+#include <asm/arch/ixp425.h>
+#include <asm/system.h>
+
+ulong loops_per_jiffy;
+
+static void cache_flush(void);
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo (void)
+{
+	unsigned long id;
+	int speed = 0;
+
+	asm ("mrc p15, 0, %0, c0, c0, 0":"=r" (id));
+
+	puts("CPU:   Intel IXP425 at ");
+	switch ((id & 0x000003f0) >> 4) {
+	case 0x1c:
+		loops_per_jiffy = 887467;
+		speed = 533;
+		break;
+
+	case 0x1d:
+		loops_per_jiffy = 666016;
+		speed = 400;
+		break;
+
+	case 0x1f:
+		loops_per_jiffy = 442901;
+		speed = 266;
+		break;
+	}
+
+	if (speed)
+		printf("%d MHz\n", speed);
+	else
+		puts("unknown revision\n");
+
+	return 0;
+}
+#endif /* CONFIG_DISPLAY_CPUINFO */
+
+int cleanup_before_linux (void)
+{
+	/*
+	 * this function is called just before we call linux
+	 * it prepares the processor for linux
+	 *
+	 * just disable everything that can disturb booting linux
+	 */
+
+	disable_interrupts ();
+
+	/* turn off I-cache */
+	icache_disable();
+	dcache_disable();
+
+	/* flush I-cache */
+	cache_flush();
+
+	return 0;
+}
+
+/* flush I/D-cache */
+static void cache_flush (void)
+{
+	unsigned long i = 0;
+
+	asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
+}
+
+/* FIXME */
+/*
+void pci_init(void)
+{
+	return;
+}
+*/
+
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+
+void bootcount_store (ulong a)
+{
+	volatile ulong *save_addr = (volatile ulong *)(CONFIG_SYS_BOOTCOUNT_ADDR);
+
+	save_addr[0] = a;
+	save_addr[1] = BOOTCOUNT_MAGIC;
+}
+
+ulong bootcount_load (void)
+{
+	volatile ulong *save_addr = (volatile ulong *)(CONFIG_SYS_BOOTCOUNT_ADDR);
+
+	if (save_addr[1] != BOOTCOUNT_MAGIC)
+		return 0;
+	else
+		return save_addr[0];
+}
+
+#endif /* CONFIG_BOOTCOUNT_LIMIT */
+
+int cpu_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_IXP4XX_NPE
+	npe_initialize(bis);
+#endif
+	return 0;
+}