Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / platforms / 40x / walnut.c

diff --git a/kernel/arch/powerpc/platforms/40x/walnut.c b/kernel/arch/powerpc/platforms/40x/walnut.c
new file mode 100644 (file)
index 0000000..f7ac2d0
--- /dev/null
+++ b/kernel/arch/powerpc/platforms/40x/walnut.c
@@ -0,0 +1,67 @@
+/*
+ * Architecture- / platform-specific boot-time initialization code for
+ * IBM PowerPC 4xx based boards. Adapted from original
+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
+ * <dan@net4x.com>.
+ *
+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 IBM Corporation
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * 2002 (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.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+
+static const struct of_device_id walnut_of_bus[] __initconst = {
+       { .compatible = "ibm,plb3", },
+       { .compatible = "ibm,opb", },
+       { .compatible = "ibm,ebc", },
+       {},
+};
+
+static int __init walnut_device_probe(void)
+{
+       of_platform_bus_probe(NULL, walnut_of_bus, NULL);
+       of_instantiate_rtc();
+
+       return 0;
+}
+machine_device_initcall(walnut, walnut_device_probe);
+
+static int __init walnut_probe(void)
+{
+       unsigned long root = of_get_flat_dt_root();
+
+       if (!of_flat_dt_is_compatible(root, "ibm,walnut"))
+               return 0;
+
+       pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+
+       return 1;
+}
+
+define_machine(walnut) {
+       .name                   = "Walnut",
+       .probe                  = walnut_probe,
+       .progress               = udbg_progress,
+       .init_IRQ               = uic_init_tree,
+       .get_irq                = uic_get_irq,
+       .restart                = ppc4xx_reset_system,
+       .calibrate_decr         = generic_calibrate_decr,
+};