8 files changed, 256 insertions, 4 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index cf030b004415..1348bbc92510 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -512,7 +512,7 @@ config PCI
         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
                 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
                 || PPC_PS3 || 44x
-        default y if !40x && !CPM2 && !8xx && !PPC_83xx \
+        default y if !40x && !CPM2 && !8xx && !PPC_MPC512x && !PPC_83xx \
                 && !PPC_85xx && !PPC_86xx
         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
         default PCI_QSPAN if !4xx && !CPM2 && 8xx
diff --git a/arch/powerpc/boot/dts/mpc5121ads.dts b/arch/powerpc/boot/dts/mpc5121ads.dts
new file mode 100644
index 000000000000..94ad7b2b241e
--- /dev/null
+++ b/arch/powerpc/boot/dts/mpc5121ads.dts
@@ -0,0 +1,122 @@
+/*
+ * MPC5121E MDS Device Tree Source
+ *
+ * Copyright 2007 Freescale Semiconductor Inc.
+ *
+ * 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.
+ */
+
+/dts-v1/;
+
+/ {
+        model = "mpc5121ads";
+        compatible = "fsl,mpc5121ads";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        cpus {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                PowerPC,5121@0 {
+                        device_type = "cpu";
+                        reg = <0>;
+                        d-cache-line-size = <0x20>;     // 32 bytes
+                        i-cache-line-size = <0x20>;     // 32 bytes
+                        d-cache-size = <0x8000>;        // L1, 32K
+                        i-cache-size = <0x8000>;        // L1, 32K
+                        timebase-frequency = <49500000>;// 49.5 MHz (csb/4)
+                        bus-frequency = <198000000>;    // 198 MHz csb bus
+                        clock-frequency = <396000000>;  // 396 MHz ppc core
+                };
+        };
+
+        memory {
+                device_type = "memory";
+                reg = <0x00000000 0x10000000>;  // 256MB at 0
+        };
+
+        localbus@80000020 {
+                compatible = "fsl,mpc5121ads-localbus";
+                #address-cells = <2>;
+                #size-cells = <1>;
+                reg = <0x80000020 0x40>;
+
+                ranges = <0x0 0x0 0xfc000000 0x04000000
+                          0x2 0x0 0x82000000 0x00008000>;
+
+                flash@0,0 {
+                        compatible = "cfi-flash";
+                        reg = <0 0x0 0x4000000>;
+                        bank-width = <4>;
+                        device-width = <1>;
+                };
+
+                board-control@2,0 {
+                        compatible = "fsl,mpc5121ads-cpld";
+                        reg = <0x2 0x0 0x8000>;
+                };
+        };
+
+        soc@80000000 {
+                compatible = "fsl,mpc5121-immr";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                #interrupt-cells = <2>;
+                ranges = <0x0 0x80000000 0x400000>;
+                reg = <0x80000000 0x400000>;
+                bus-frequency = <66000000>;     // 66 MHz ips bus
+
+
+                // IPIC
+                // interrupts cell = <intr #, sense>
+                // sense values match linux IORESOURCE_IRQ_* defines:
+                // sense == 8: Level, low assertion
+                // sense == 2: Edge, high-to-low change
+                //
+                ipic: interrupt-controller@c00 {
+                        compatible = "fsl,mpc5121-ipic", "fsl,ipic";
+                        interrupt-controller;
+                        #address-cells = <0>;
+                        #interrupt-cells = <2>;
+                        reg = <0xc00 0x100>;
+                };
+
+                // 512x PSCs are not 52xx PSCs compatible
+                // PSC3 serial port A aka ttyPSC0
+                serial@11300 {
+                        device_type = "serial";
+                        compatible = "fsl,mpc5121-psc-uart";
+                        // Logical port assignment needed until driver
+                        // learns to use aliases
+                        port-number = <0>;
+                        cell-index = <3>;
+                        reg = <0x11300 0x100>;
+                        interrupts = <0x28 0x8>; // actually the fifo irq
+                        interrupt-parent = < &ipic >;
+                };
+
+                // PSC4 serial port B aka ttyPSC1
+                serial@11400 {
+                        device_type = "serial";
+                        compatible = "fsl,mpc5121-psc-uart";
+                        // Logical port assignment needed until driver
+                        // learns to use aliases
+                        port-number = <1>;
+                        cell-index = <4>;
+                        reg = <0x11400 0x100>;
+                        interrupts = <0x28 0x8>; // actually the fifo irq
+                        interrupt-parent = < &ipic >;
+                };
+
+                pscsfifo@11f00 {
+                        compatible = "fsl,mpc5121-psc-fifo";
+                        reg = <0x11f00 0x100>;
+                        interrupts = <0x28 0x8>;
+                        interrupt-parent = < &ipic >;
+                };
+        };
+};
diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig
new file mode 100644
index 000000000000..c6fa49e23dc0
--- /dev/null
+++ b/arch/powerpc/platforms/512x/Kconfig
@@ -0,0 +1,20 @@
+config PPC_MPC512x
+        bool
+        select FSL_SOC
+        select IPIC
+        default n
+
+config PPC_MPC5121
+        bool
+        select PPC_MPC512x
+        default n
+
+config MPC5121_ADS
+        bool "Freescale MPC5121E ADS"
+        depends on PPC_MULTIPLATFORM && PPC32
+        select DEFAULT_UIMAGE
+        select WANT_DEVICE_TREE
+        select PPC_MPC5121
+        help
+          This option enables support for the MPC5121E ADS board.
+        default n
diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile
new file mode 100644
index 000000000000..232c89f2039a
--- /dev/null
+++ b/arch/powerpc/platforms/512x/Makefile
@@ -0,0 +1,4 @@
+#
+# Makefile for the Freescale PowerPC 512x linux kernel.
+#
+obj-$(CONFIG_MPC5121_ADS)       += mpc5121_ads.o
diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c
new file mode 100644
index 000000000000..50bd3a319022
--- /dev/null
+++ b/arch/powerpc/platforms/512x/mpc5121_ads.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
+ *
+ * Description:
+ * MPC5121 ADS board setup
+ *
+ * This 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/kernel.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/ipic.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+
+/**
+ *      mpc512x_find_ips_freq - Find the IPS bus frequency for a device
+ *      @node:  device node
+ *
+ *      Returns IPS bus frequency, or 0 if the bus frequency cannot be found.
+ */
+unsigned long
+mpc512x_find_ips_freq(struct device_node *node)
+{
+        struct device_node *np;
+        const unsigned int *p_ips_freq = NULL;
+
+        of_node_get(node);
+        while (node) {
+                p_ips_freq = of_get_property(node, "bus-frequency", NULL);
+                if (p_ips_freq)
+                        break;
+
+                np = of_get_parent(node);
+                of_node_put(node);
+                node = np;
+        }
+        if (node)
+                of_node_put(node);
+
+        return p_ips_freq ? *p_ips_freq : 0;
+}
+EXPORT_SYMBOL(mpc512x_find_ips_freq);
+
+static struct of_device_id __initdata of_bus_ids[] = {
+        { .name = "soc", },
+        { .name = "localbus", },
+        {},
+};
+
+static void __init mpc5121_ads_declare_of_platform_devices(void)
+{
+        /* Find every child of the SOC node and add it to of_platform */
+        if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
+                printk(KERN_ERR __FILE__ ": "
+                        "Error while probing of_platform bus\n");
+}
+
+static void __init mpc5121_ads_init_IRQ(void)
+{
+        struct device_node *np;
+
+        np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
+        if (!np)
+                return;
+
+        ipic_init(np, 0);
+        of_node_put(np);
+
+        /*
+         * 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 mpc5121_ads_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        return of_flat_dt_is_compatible(root, "fsl,mpc5121ads");
+}
+
+define_machine(mpc5121_ads) {
+        .name                   = "MPC5121 ADS",
+        .probe                  = mpc5121_ads_probe,
+        .init                   = mpc5121_ads_declare_of_platform_devices,
+        .init_IRQ               = mpc5121_ads_init_IRQ,
+        .get_irq                = ipic_get_irq,
+        .calibrate_decr         = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 045b8c80eeaf..fcedbec07f94 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -42,6 +42,7 @@ config CLASSIC32
 source "arch/powerpc/platforms/pseries/Kconfig"
 source "arch/powerpc/platforms/iseries/Kconfig"
 source "arch/powerpc/platforms/chrp/Kconfig"
+source "arch/powerpc/platforms/512x/Kconfig"
 source "arch/powerpc/platforms/52xx/Kconfig"
 source "arch/powerpc/platforms/powermac/Kconfig"
 source "arch/powerpc/platforms/prep/Kconfig"
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index eea2e7049fed..69941ba70975 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -14,7 +14,7 @@ choice
           There are five families of 32 bit PowerPC chips supported.
           The most common ones are the desktop and server CPUs (601, 603,
           604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
-          embedded 52xx/82xx/83xx/86xx counterparts.
+          embedded 512x/52xx/82xx/83xx/86xx counterparts.
           The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
           (85xx) each form a family of their own that is not compatible
           with the others.
@@ -22,7 +22,7 @@ choice
           If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
 
 config 6xx
-        bool "52xx/6xx/7xx/74xx/82xx/83xx/86xx"
+        bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
         select PPC_FPU
 
 config PPC_85xx
@@ -225,7 +225,7 @@ config NR_CPUS
 
 config NOT_COHERENT_CACHE
         bool
-        depends on 4xx || 8xx || E200
+        depends on 4xx || 8xx || E200 || PPC_MPC512x
         default y
 
 config CHECK_CACHE_COHERENCY
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 6d9079da5f5a..a984894466d9 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -11,6 +11,7 @@ endif
 obj-$(CONFIG_PPC_CHRP)          += chrp/
 obj-$(CONFIG_40x)               += 40x/
 obj-$(CONFIG_44x)               += 44x/
+obj-$(CONFIG_PPC_MPC512x)       += 512x/
 obj-$(CONFIG_PPC_MPC52xx)       += 52xx/
 obj-$(CONFIG_PPC_8xx)           += 8xx/
 obj-$(CONFIG_PPC_82xx)          += 82xx/