1 files changed, 78 insertions, 0 deletions
diff --git a/arch/mips/vr41xx/nec-cmbvr4133/init.c b/arch/mips/vr41xx/nec-cmbvr4133/init.c
new file mode 100644
index 00000000000..87f06b3f5a9
--- /dev/null
+++ b/arch/mips/vr41xx/nec-cmbvr4133/init.c
@@ -0,0 +1,78 @@
+/*
+ * arch/mips/vr41xx/nec-cmbvr4133/init.c
+ *
+ * PROM library initialisation code for NEC CMB-VR4133 board.
+ *
+ * Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> and
+ *         Jun Sun <jsun@mvista.com, or source@mvista.com> and
+ *         Alex Sapkov <asapkov@ru.mvista.com>
+ *
+ * 2001-2004 (c) MontaVista, Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for NEC-CMBVR4133 in 2.6
+ * Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+
+#ifdef CONFIG_ROCKHOPPER
+#include <asm/io.h>
+#include <linux/pci.h>
+
+#define PCICONFDREG	0xaf000c14
+#define PCICONFAREG	0xaf000c18
+#endif
+
+const char *get_system_type(void)
+{
+	return "NEC CMB-VR4133";
+}
+
+#ifdef CONFIG_ROCKHOPPER
+void disable_pcnet(void)
+{
+	u32 data;
+
+	/*
+	 * Workaround for the bug in PMON on VR4133. PMON leaves
+	 * AMD PCNet controller (on Rockhopper) initialized and running in
+	 * bus master mode. We have do disable it before doing any
+	 * further initialization. Or we get problems with PCI bus 2
+	 * and random lockups and crashes.
+	 */
+
+	writel((2 << 16)		|
+	       (PCI_DEVFN(1,0) << 8)	|
+	       (0 & 0xfc)		|
+               1UL,
+	       PCICONFAREG);
+
+	data = readl(PCICONFDREG);
+
+	writel((2 << 16)		|
+	       (PCI_DEVFN(1,0) << 8)	|
+	       (4 & 0xfc)		|
+               1UL,
+	       PCICONFAREG);
+
+	data = readl(PCICONFDREG);
+
+	writel((2 << 16)		|
+	       (PCI_DEVFN(1,0) << 8)	|
+	       (4 & 0xfc)		|
+               1UL,
+	       PCICONFAREG);
+
+	data &= ~4;
+
+	writel(data, PCICONFDREG);
+}
+#endif
+