[POWERPC] 83xx: Add platform support for MPC837x MDS board

The MPC837x MDS is a new member of Freescale MDS reference system.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 116 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index ec305f18abd8..2430ac840493 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -50,6 +50,11 @@ config MPC836x_MDS
         help
           This option enables support for the MPC836x MDS Processor Board.
 
+config MPC837x_MDS
+        bool "Freescale MPC837x MDS"
+        select DEFAULT_UIMAGE
+        help
+          This option enables support for the MPC837x MDS Processor Board.
 endchoice
 
 config PPC_MPC831x
@@ -75,3 +80,9 @@ config PPC_MPC836x
         select PPC_UDBG_16550
         select PPC_INDIRECT_PCI
         default y if MPC836x_MDS
+
+config PPC_MPC837x
+        bool
+        select PPC_UDBG_16550
+        select PPC_INDIRECT_PCI
+        default y if MPC837x_MDS
diff --git a/arch/powerpc/platforms/83xx/Makefile b/arch/powerpc/platforms/83xx/Makefile
index 5a98f885779f..df4662999a95 100644
--- a/arch/powerpc/platforms/83xx/Makefile
+++ b/arch/powerpc/platforms/83xx/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_MPC834x_MDS)	+= mpc834x_mds.o
 obj-$(CONFIG_MPC834x_ITX)       += mpc834x_itx.o
 obj-$(CONFIG_MPC836x_MDS)       += mpc836x_mds.o
 obj-$(CONFIG_MPC832x_MDS)       += mpc832x_mds.o
+obj-$(CONFIG_MPC837x_MDS)       += mpc837x_mds.o
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c
new file mode 100644
index 000000000000..166c1116b1ac
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c
@@ -0,0 +1,104 @@
+/*
+ * arch/powerpc/platforms/83xx/mpc837x_mds.c
+ *
+ * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * MPC837x MDS board specific routines
+ *
+ * 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.
+ */
+
+#include <linux/pci.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/time.h>
+#include <asm/ipic.h>
+#include <asm/udbg.h>
+#include <asm/prom.h>
+
+#include "mpc83xx.h"
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+#endif
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init mpc837x_mds_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+        struct device_node *np;
+#endif
+
+        if (ppc_md.progress)
+                ppc_md.progress("mpc837x_mds_setup_arch()", 0);
+
+#ifdef CONFIG_PCI
+        for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
+                mpc83xx_add_bridge(np);
+#endif
+}
+
+static struct of_device_id mpc837x_ids[] = {
+        { .type = "soc", },
+        { .compatible = "soc", },
+        {},
+};
+
+static int __init mpc837x_declare_of_platform_devices(void)
+{
+        if (!machine_is(mpc837x_mds))
+                return 0;
+
+        /* Publish of_device */
+        of_platform_bus_probe(NULL, mpc837x_ids, NULL);
+
+        return 0;
+}
+device_initcall(mpc837x_declare_of_platform_devices);
+
+static void __init mpc837x_mds_init_IRQ(void)
+{
+        struct device_node *np;
+
+        np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
+        if (!np)
+                return;
+
+        ipic_init(np, 0);
+
+        /* Initialize the default interrupt mapping priorities,
+         * in case the boot rom changed something on us.
+         */
+        ipic_set_default_priority();
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init mpc837x_mds_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
+}
+
+define_machine(mpc837x_mds) {
+        .name                   = "MPC837x MDS",
+        .probe                  = mpc837x_mds_probe,
+        .setup_arch             = mpc837x_mds_setup_arch,
+        .init_IRQ               = mpc837x_mds_init_IRQ,
+        .get_irq                = ipic_get_irq,
+        .restart                = mpc83xx_restart,
+        .time_init              = mpc83xx_time_init,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+};