11 files changed, 1335 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 2eab27a94cc9..fa0f690d3867 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -311,7 +311,7 @@ config NR_CPUS
 
 config NOT_COHERENT_CACHE
         bool
-        depends on 4xx || 8xx || E200 || PPC_MPC512x
+        depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
         default y
 
 config CHECK_CACHE_COHERENCY
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 291ac9d8cbee..524d971a1478 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -90,3 +90,36 @@ config MPC10X_OPENPIC
 config MPC10X_STORE_GATHERING
         bool "Enable MPC10x store gathering"
         depends on MPC10X_BRIDGE
+
+config GAMECUBE_COMMON
+        bool
+
+config USBGECKO_UDBG
+        bool "USB Gecko udbg console for the Nintendo GameCube/Wii"
+        depends on GAMECUBE_COMMON
+        help
+          If you say yes to this option, support will be included for the
+          USB Gecko adapter as an udbg console.
+          The USB Gecko is a EXI to USB Serial converter that can be plugged
+          into a memcard slot in the Nintendo GameCube/Wii.
+
+          This driver bypasses the EXI layer completely.
+
+          If in doubt, say N here.
+
+config GAMECUBE
+        bool "Nintendo-GameCube"
+        depends on EMBEDDED6xx
+        select GAMECUBE_COMMON
+        help
+          Select GAMECUBE if configuring for the Nintendo GameCube.
+          More information at: <http://gc-linux.sourceforge.net/>
+
+config WII
+        bool "Nintendo-Wii"
+        depends on EMBEDDED6xx
+        select GAMECUBE_COMMON
+        help
+          Select WII if configuring for the Nintendo Wii.
+          More information at: <http://gc-linux.sourceforge.net/>
+
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index 0773c08bd444..66c23e423f40 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -7,3 +7,7 @@ obj-$(CONFIG_STORCENTER)	+= storcenter.o
 obj-$(CONFIG_PPC_HOLLY)         += holly.o
 obj-$(CONFIG_PPC_PRPMC2800)     += prpmc2800.o
 obj-$(CONFIG_PPC_C2K)           += c2k.o
+obj-$(CONFIG_USBGECKO_UDBG)     += usbgecko_udbg.o
+obj-$(CONFIG_GAMECUBE_COMMON)   += flipper-pic.o
+obj-$(CONFIG_GAMECUBE)          += gamecube.o
+obj-$(CONFIG_WII)               += wii.o hlwd-pic.o
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
new file mode 100644
index 000000000000..d5963285e3be
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
@@ -0,0 +1,263 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.c
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+#define DRV_MODULE_NAME "flipper-pic"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <asm/io.h>
+
+#include "flipper-pic.h"
+
+#define FLIPPER_NR_IRQS         32
+
+/*
+ * Each interrupt has a corresponding bit in both
+ * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
+ *
+ * Enabling/disabling an interrupt line involves setting/clearing
+ * the corresponding bit in IMR.
+ * Except for the RSW interrupt, all interrupts get deasserted automatically
+ * when the source deasserts the interrupt.
+ */
+#define FLIPPER_ICR             0x00
+#define FLIPPER_ICR_RSS         (1<<16) /* reset switch state */
+
+#define FLIPPER_IMR             0x04
+
+#define FLIPPER_RESET           0x24
+
+
+/*
+ * IRQ chip hooks.
+ *
+ */
+
+static void flipper_pic_mask_and_ack(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+        u32 mask = 1 << irq;
+
+        clrbits32(io_base + FLIPPER_IMR, mask);
+        /* this is at least needed for RSW */
+        out_be32(io_base + FLIPPER_ICR, mask);
+}
+
+static void flipper_pic_ack(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        /* this is at least needed for RSW */
+        out_be32(io_base + FLIPPER_ICR, 1 << irq);
+}
+
+static void flipper_pic_mask(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        clrbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+static void flipper_pic_unmask(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        setbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+
+static struct irq_chip flipper_pic = {
+        .name           = "flipper-pic",
+        .ack            = flipper_pic_ack,
+        .mask_ack       = flipper_pic_mask_and_ack,
+        .mask           = flipper_pic_mask,
+        .unmask         = flipper_pic_unmask,
+};
+
+/*
+ * IRQ host hooks.
+ *
+ */
+
+static struct irq_host *flipper_irq_host;
+
+static int flipper_pic_map(struct irq_host *h, unsigned int virq,
+                           irq_hw_number_t hwirq)
+{
+        set_irq_chip_data(virq, h->host_data);
+        get_irq_desc(virq)->status |= IRQ_LEVEL;
+        set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
+        return 0;
+}
+
+static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
+{
+        set_irq_chip_data(irq, NULL);
+        set_irq_chip(irq, NULL);
+}
+
+static int flipper_pic_match(struct irq_host *h, struct device_node *np)
+{
+        return 1;
+}
+
+
+static struct irq_host_ops flipper_irq_host_ops = {
+        .map = flipper_pic_map,
+        .unmap = flipper_pic_unmap,
+        .match = flipper_pic_match,
+};
+
+/*
+ * Platform hooks.
+ *
+ */
+
+static void __flipper_quiesce(void __iomem *io_base)
+{
+        /* mask and ack all IRQs */
+        out_be32(io_base + FLIPPER_IMR, 0x00000000);
+        out_be32(io_base + FLIPPER_ICR, 0xffffffff);
+}
+
+struct irq_host * __init flipper_pic_init(struct device_node *np)
+{
+        struct device_node *pi;
+        struct irq_host *irq_host = NULL;
+        struct resource res;
+        void __iomem *io_base;
+        int retval;
+
+        pi = of_get_parent(np);
+        if (!pi) {
+                pr_err("no parent found\n");
+                goto out;
+        }
+        if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
+                pr_err("unexpected parent compatible\n");
+                goto out;
+        }
+
+        retval = of_address_to_resource(pi, 0, &res);
+        if (retval) {
+                pr_err("no io memory range found\n");
+                goto out;
+        }
+        io_base = ioremap(res.start, resource_size(&res));
+
+        pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
+
+        __flipper_quiesce(io_base);
+
+        irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, FLIPPER_NR_IRQS,
+                                  &flipper_irq_host_ops, -1);
+        if (!irq_host) {
+                pr_err("failed to allocate irq_host\n");
+                return NULL;
+        }
+
+        irq_host->host_data = io_base;
+
+out:
+        return irq_host;
+}
+
+unsigned int flipper_pic_get_irq(void)
+{
+        void __iomem *io_base = flipper_irq_host->host_data;
+        int irq;
+        u32 irq_status;
+
+        irq_status = in_be32(io_base + FLIPPER_ICR) &
+                     in_be32(io_base + FLIPPER_IMR);
+        if (irq_status == 0)
+                return NO_IRQ;  /* no more IRQs pending */
+
+        irq = __ffs(irq_status);
+        return irq_linear_revmap(flipper_irq_host, irq);
+}
+
+/*
+ * Probe function.
+ *
+ */
+
+void __init flipper_pic_probe(void)
+{
+        struct device_node *np;
+
+        np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
+        BUG_ON(!np);
+
+        flipper_irq_host = flipper_pic_init(np);
+        BUG_ON(!flipper_irq_host);
+
+        irq_set_default_host(flipper_irq_host);
+
+        of_node_put(np);
+}
+
+/*
+ * Misc functions related to the flipper chipset.
+ *
+ */
+
+/**
+ * flipper_quiesce() - quiesce flipper irq controller
+ *
+ * Mask and ack all interrupt sources.
+ *
+ */
+void flipper_quiesce(void)
+{
+        void __iomem *io_base = flipper_irq_host->host_data;
+
+        __flipper_quiesce(io_base);
+}
+
+/*
+ * Resets the platform.
+ */
+void flipper_platform_reset(void)
+{
+        void __iomem *io_base;
+
+        if (flipper_irq_host && flipper_irq_host->host_data) {
+                io_base = flipper_irq_host->host_data;
+                out_8(io_base + FLIPPER_RESET, 0x00);
+        }
+}
+
+/*
+ * Returns non-zero if the reset button is pressed.
+ */
+int flipper_is_reset_button_pressed(void)
+{
+        void __iomem *io_base;
+        u32 icr;
+
+        if (flipper_irq_host && flipper_irq_host->host_data) {
+                io_base = flipper_irq_host->host_data;
+                icr = in_be32(io_base + FLIPPER_ICR);
+                return !(icr & FLIPPER_ICR_RSS);
+        }
+        return 0;
+}
+
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.h b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
new file mode 100644
index 000000000000..e339186b5663
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
@@ -0,0 +1,25 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.h
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+
+#ifndef __FLIPPER_PIC_H
+#define __FLIPPER_PIC_H
+
+unsigned int flipper_pic_get_irq(void);
+void __init flipper_pic_probe(void);
+
+void flipper_quiesce(void);
+void flipper_platform_reset(void);
+int flipper_is_reset_button_pressed(void);
+
+#endif
diff --git a/arch/powerpc/platforms/embedded6xx/gamecube.c b/arch/powerpc/platforms/embedded6xx/gamecube.c
new file mode 100644
index 000000000000..1106fd99627f
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/gamecube.c
@@ -0,0 +1,118 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/gamecube.c
+ *
+ * Nintendo GameCube board-specific support
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kexec.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+#include "flipper-pic.h"
+#include "usbgecko_udbg.h"
+
+
+static void gamecube_spin(void)
+{
+        /* spin until power button pressed */
+        for (;;)
+                cpu_relax();
+}
+
+static void gamecube_restart(char *cmd)
+{
+        local_irq_disable();
+        flipper_platform_reset();
+        gamecube_spin();
+}
+
+static void gamecube_power_off(void)
+{
+        local_irq_disable();
+        gamecube_spin();
+}
+
+static void gamecube_halt(void)
+{
+        gamecube_restart(NULL);
+}
+
+static void __init gamecube_init_early(void)
+{
+        ug_udbg_init();
+}
+
+static int __init gamecube_probe(void)
+{
+        unsigned long dt_root;
+
+        dt_root = of_get_flat_dt_root();
+        if (!of_flat_dt_is_compatible(dt_root, "nintendo,gamecube"))
+                return 0;
+
+        return 1;
+}
+
+static void gamecube_shutdown(void)
+{
+        flipper_quiesce();
+}
+
+#ifdef CONFIG_KEXEC
+static int gamecube_kexec_prepare(struct kimage *image)
+{
+        return 0;
+}
+#endif /* CONFIG_KEXEC */
+
+
+define_machine(gamecube) {
+        .name                   = "gamecube",
+        .probe                  = gamecube_probe,
+        .init_early             = gamecube_init_early,
+        .restart                = gamecube_restart,
+        .power_off              = gamecube_power_off,
+        .halt                   = gamecube_halt,
+        .init_IRQ               = flipper_pic_probe,
+        .get_irq                = flipper_pic_get_irq,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+        .machine_shutdown       = gamecube_shutdown,
+#ifdef CONFIG_KEXEC
+        .machine_kexec_prepare  = gamecube_kexec_prepare,
+#endif
+};
+
+
+static struct of_device_id gamecube_of_bus[] = {
+        { .compatible = "nintendo,flipper", },
+        { },
+};
+
+static int __init gamecube_device_probe(void)
+{
+        if (!machine_is(gamecube))
+                return 0;
+
+        of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
+        return 0;
+}
+device_initcall(gamecube_device_probe);
+
diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
new file mode 100644
index 000000000000..dd20bff33207
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
@@ -0,0 +1,241 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+ *
+ * Nintendo Wii "Hollywood" interrupt controller support.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+#define DRV_MODULE_NAME "hlwd-pic"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <asm/io.h>
+
+#include "hlwd-pic.h"
+
+#define HLWD_NR_IRQS    32
+
+/*
+ * Each interrupt has a corresponding bit in both
+ * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
+ *
+ * Enabling/disabling an interrupt line involves asserting/clearing
+ * the corresponding bit in IMR. ACK'ing a request simply involves
+ * asserting the corresponding bit in ICR.
+ */
+#define HW_BROADWAY_ICR         0x00
+#define HW_BROADWAY_IMR         0x04
+
+
+/*
+ * IRQ chip hooks.
+ *
+ */
+
+static void hlwd_pic_mask_and_ack(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+        u32 mask = 1 << irq;
+
+        clrbits32(io_base + HW_BROADWAY_IMR, mask);
+        out_be32(io_base + HW_BROADWAY_ICR, mask);
+}
+
+static void hlwd_pic_ack(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        out_be32(io_base + HW_BROADWAY_ICR, 1 << irq);
+}
+
+static void hlwd_pic_mask(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        clrbits32(io_base + HW_BROADWAY_IMR, 1 << irq);
+}
+
+static void hlwd_pic_unmask(unsigned int virq)
+{
+        int irq = virq_to_hw(virq);
+        void __iomem *io_base = get_irq_chip_data(virq);
+
+        setbits32(io_base + HW_BROADWAY_IMR, 1 << irq);
+}
+
+
+static struct irq_chip hlwd_pic = {
+        .name           = "hlwd-pic",
+        .ack            = hlwd_pic_ack,
+        .mask_ack       = hlwd_pic_mask_and_ack,
+        .mask           = hlwd_pic_mask,
+        .unmask         = hlwd_pic_unmask,
+};
+
+/*
+ * IRQ host hooks.
+ *
+ */
+
+static struct irq_host *hlwd_irq_host;
+
+static int hlwd_pic_map(struct irq_host *h, unsigned int virq,
+                           irq_hw_number_t hwirq)
+{
+        set_irq_chip_data(virq, h->host_data);
+        get_irq_desc(virq)->status |= IRQ_LEVEL;
+        set_irq_chip_and_handler(virq, &hlwd_pic, handle_level_irq);
+        return 0;
+}
+
+static void hlwd_pic_unmap(struct irq_host *h, unsigned int irq)
+{
+        set_irq_chip_data(irq, NULL);
+        set_irq_chip(irq, NULL);
+}
+
+static struct irq_host_ops hlwd_irq_host_ops = {
+        .map = hlwd_pic_map,
+        .unmap = hlwd_pic_unmap,
+};
+
+static unsigned int __hlwd_pic_get_irq(struct irq_host *h)
+{
+        void __iomem *io_base = h->host_data;
+        int irq;
+        u32 irq_status;
+
+        irq_status = in_be32(io_base + HW_BROADWAY_ICR) &
+                     in_be32(io_base + HW_BROADWAY_IMR);
+        if (irq_status == 0)
+                return NO_IRQ;  /* no more IRQs pending */
+
+        irq = __ffs(irq_status);
+        return irq_linear_revmap(h, irq);
+}
+
+static void hlwd_pic_irq_cascade(unsigned int cascade_virq,
+                                      struct irq_desc *desc)
+{
+        struct irq_host *irq_host = get_irq_data(cascade_virq);
+        unsigned int virq;
+
+        spin_lock(&desc->lock);
+        desc->chip->mask(cascade_virq); /* IRQ_LEVEL */
+        spin_unlock(&desc->lock);
+
+        virq = __hlwd_pic_get_irq(irq_host);
+        if (virq != NO_IRQ)
+                generic_handle_irq(virq);
+        else
+                pr_err("spurious interrupt!\n");
+
+        spin_lock(&desc->lock);
+        desc->chip->ack(cascade_virq); /* IRQ_LEVEL */
+        if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
+                desc->chip->unmask(cascade_virq);
+        spin_unlock(&desc->lock);
+}
+
+/*
+ * Platform hooks.
+ *
+ */
+
+static void __hlwd_quiesce(void __iomem *io_base)
+{
+        /* mask and ack all IRQs */
+        out_be32(io_base + HW_BROADWAY_IMR, 0);
+        out_be32(io_base + HW_BROADWAY_ICR, 0xffffffff);
+}
+
+struct irq_host *hlwd_pic_init(struct device_node *np)
+{
+        struct irq_host *irq_host;
+        struct resource res;
+        void __iomem *io_base;
+        int retval;
+
+        retval = of_address_to_resource(np, 0, &res);
+        if (retval) {
+                pr_err("no io memory range found\n");
+                return NULL;
+        }
+        io_base = ioremap(res.start, resource_size(&res));
+        if (!io_base) {
+                pr_err("ioremap failed\n");
+                return NULL;
+        }
+
+        pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
+
+        __hlwd_quiesce(io_base);
+
+        irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, HLWD_NR_IRQS,
+                                  &hlwd_irq_host_ops, -1);
+        if (!irq_host) {
+                pr_err("failed to allocate irq_host\n");
+                return NULL;
+        }
+        irq_host->host_data = io_base;
+
+        return irq_host;
+}
+
+unsigned int hlwd_pic_get_irq(void)
+{
+        return __hlwd_pic_get_irq(hlwd_irq_host);
+}
+
+/*
+ * Probe function.
+ *
+ */
+
+void hlwd_pic_probe(void)
+{
+        struct irq_host *host;
+        struct device_node *np;
+        const u32 *interrupts;
+        int cascade_virq;
+
+        for_each_compatible_node(np, NULL, "nintendo,hollywood-pic") {
+                interrupts = of_get_property(np, "interrupts", NULL);
+                if (interrupts) {
+                        host = hlwd_pic_init(np);
+                        BUG_ON(!host);
+                        cascade_virq = irq_of_parse_and_map(np, 0);
+                        set_irq_data(cascade_virq, host);
+                        set_irq_chained_handler(cascade_virq,
+                                                hlwd_pic_irq_cascade);
+                        hlwd_irq_host = host;
+                        break;
+                }
+        }
+}
+
+/**
+ * hlwd_quiesce() - quiesce hollywood irq controller
+ *
+ * Mask and ack all interrupt sources.
+ *
+ */
+void hlwd_quiesce(void)
+{
+        void __iomem *io_base = hlwd_irq_host->host_data;
+
+        __hlwd_quiesce(io_base);
+}
+
diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.h b/arch/powerpc/platforms/embedded6xx/hlwd-pic.h
new file mode 100644
index 000000000000..d2e5a092761e
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.h
@@ -0,0 +1,22 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/hlwd-pic.h
+ *
+ * Nintendo Wii "Hollywood" interrupt controller support.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+
+#ifndef __HLWD_PIC_H
+#define __HLWD_PIC_H
+
+extern unsigned int hlwd_pic_get_irq(void);
+extern void hlwd_pic_probe(void);
+extern void hlwd_quiesce(void);
+
+#endif
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
new file mode 100644
index 000000000000..edc956cc8b13
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
@@ -0,0 +1,328 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 <mm/mmu_decl.h>
+
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/fixmap.h>
+
+#include "usbgecko_udbg.h"
+
+
+#define EXI_CLK_32MHZ           5
+
+#define EXI_CSR                 0x00
+#define   EXI_CSR_CLKMASK       (0x7<<4)
+#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
+#define   EXI_CSR_CSMASK        (0x7<<7)
+#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
+
+#define EXI_CR                  0x0c
+#define   EXI_CR_TSTART         (1<<0)
+#define   EXI_CR_WRITE          (1<<2)
+#define   EXI_CR_READ_WRITE     (2<<2)
+#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
+
+#define EXI_DATA                0x10
+
+#define UG_READ_ATTEMPTS        100
+#define UG_WRITE_ATTEMPTS       100
+
+
+static void __iomem *ug_io_base;
+
+/*
+ * Performs one input/output transaction between the exi host and the usbgecko.
+ */
+static u32 ug_io_transaction(u32 in)
+{
+        u32 __iomem *csr_reg = ug_io_base + EXI_CSR;
+        u32 __iomem *data_reg = ug_io_base + EXI_DATA;
+        u32 __iomem *cr_reg = ug_io_base + EXI_CR;
+        u32 csr, data, cr;
+
+        /* select */
+        csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
+        out_be32(csr_reg, csr);
+
+        /* read/write */
+        data = in;
+        out_be32(data_reg, data);
+        cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
+        out_be32(cr_reg, cr);
+
+        while (in_be32(cr_reg) & EXI_CR_TSTART)
+                barrier();
+
+        /* deselect */
+        out_be32(csr_reg, 0);
+
+        /* result */
+        data = in_be32(data_reg);
+
+        return data;
+}
+
+/*
+ * Returns true if an usbgecko adapter is found.
+ */
+static int ug_is_adapter_present(void)
+{
+        if (!ug_io_base)
+                return 0;
+
+        return ug_io_transaction(0x90000000) == 0x04700000;
+}
+
+/*
+ * Returns true if the TX fifo is ready for transmission.
+ */
+static int ug_is_txfifo_ready(void)
+{
+        return ug_io_transaction(0xc0000000) & 0x04000000;
+}
+
+/*
+ * Tries to transmit a character.
+ * If the TX fifo is not ready the result is undefined.
+ */
+static void ug_raw_putc(char ch)
+{
+        ug_io_transaction(0xb0000000 | (ch << 20));
+}
+
+/*
+ * Transmits a character.
+ * It silently fails if the TX fifo is not ready after a number of retries.
+ */
+static void ug_putc(char ch)
+{
+        int count = UG_WRITE_ATTEMPTS;
+
+        if (!ug_io_base)
+                return;
+
+        if (ch == '\n')
+                ug_putc('\r');
+
+        while (!ug_is_txfifo_ready() && count--)
+                barrier();
+        if (count)
+                ug_raw_putc(ch);
+}
+
+/*
+ * Returns true if the RX fifo is ready for transmission.
+ */
+static int ug_is_rxfifo_ready(void)
+{
+        return ug_io_transaction(0xd0000000) & 0x04000000;
+}
+
+/*
+ * Tries to receive a character.
+ * If a character is unavailable the function returns -1.
+ */
+static int ug_raw_getc(void)
+{
+        u32 data = ug_io_transaction(0xa0000000);
+        if (data & 0x08000000)
+                return (data >> 16) & 0xff;
+        else
+                return -1;
+}
+
+/*
+ * Receives a character.
+ * It fails if the RX fifo is not ready after a number of retries.
+ */
+static int ug_getc(void)
+{
+        int count = UG_READ_ATTEMPTS;
+
+        if (!ug_io_base)
+                return -1;
+
+        while (!ug_is_rxfifo_ready() && count--)
+                barrier();
+        return ug_raw_getc();
+}
+
+/*
+ * udbg functions.
+ *
+ */
+
+/*
+ * Transmits a character.
+ */
+void ug_udbg_putc(char ch)
+{
+        ug_putc(ch);
+}
+
+/*
+ * Receives a character. Waits until a character is available.
+ */
+static int ug_udbg_getc(void)
+{
+        int ch;
+
+        while ((ch = ug_getc()) == -1)
+                barrier();
+        return ch;
+}
+
+/*
+ * Receives a character. If a character is not available, returns -1.
+ */
+static int ug_udbg_getc_poll(void)
+{
+        if (!ug_is_rxfifo_ready())
+                return -1;
+        return ug_getc();
+}
+
+/*
+ * Retrieves and prepares the virtual address needed to access the hardware.
+ */
+static void __iomem *ug_udbg_setup_exi_io_base(struct device_node *np)
+{
+        void __iomem *exi_io_base = NULL;
+        phys_addr_t paddr;
+        const unsigned int *reg;
+
+        reg = of_get_property(np, "reg", NULL);
+        if (reg) {
+                paddr = of_translate_address(np, reg);
+                if (paddr)
+                        exi_io_base = ioremap(paddr, reg[1]);
+        }
+        return exi_io_base;
+}
+
+/*
+ * Checks if a USB Gecko adapter is inserted in any memory card slot.
+ */
+static void __iomem *ug_udbg_probe(void __iomem *exi_io_base)
+{
+        int i;
+
+        /* look for a usbgecko on memcard slots A and B */
+        for (i = 0; i < 2; i++) {
+                ug_io_base = exi_io_base + 0x14 * i;
+                if (ug_is_adapter_present())
+                        break;
+        }
+        if (i == 2)
+                ug_io_base = NULL;
+        return ug_io_base;
+
+}
+
+/*
+ * USB Gecko udbg support initialization.
+ */
+void __init ug_udbg_init(void)
+{
+        struct device_node *np;
+        void __iomem *exi_io_base;
+
+        if (ug_io_base)
+                udbg_printf("%s: early -> final\n", __func__);
+
+        np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-exi");
+        if (!np) {
+                udbg_printf("%s: EXI node not found\n", __func__);
+                goto done;
+        }
+
+        exi_io_base = ug_udbg_setup_exi_io_base(np);
+        if (!exi_io_base) {
+                udbg_printf("%s: failed to setup EXI io base\n", __func__);
+                goto done;
+        }
+
+        if (!ug_udbg_probe(exi_io_base)) {
+                udbg_printf("usbgecko_udbg: not found\n");
+                iounmap(exi_io_base);
+        } else {
+                udbg_putc = ug_udbg_putc;
+                udbg_getc = ug_udbg_getc;
+                udbg_getc_poll = ug_udbg_getc_poll;
+                udbg_printf("usbgecko_udbg: ready\n");
+        }
+
+done:
+        if (np)
+                of_node_put(np);
+        return;
+}
+
+#ifdef CONFIG_PPC_EARLY_DEBUG_USBGECKO
+
+static phys_addr_t __init ug_early_grab_io_addr(void)
+{
+#if defined(CONFIG_GAMECUBE)
+        return 0x0c000000;
+#elif defined(CONFIG_WII)
+        return 0x0d000000;
+#else
+#error Invalid platform for USB Gecko based early debugging.
+#endif
+}
+
+/*
+ * USB Gecko early debug support initialization for udbg.
+ */
+void __init udbg_init_usbgecko(void)
+{
+        void __iomem *early_debug_area;
+        void __iomem *exi_io_base;
+
+        /*
+         * At this point we have a BAT already setup that enables I/O
+         * to the EXI hardware.
+         *
+         * The BAT uses a virtual address range reserved at the fixmap.
+         * This must match the virtual address configured in
+         * head_32.S:setup_usbgecko_bat().
+         */
+        early_debug_area = (void __iomem *)__fix_to_virt(FIX_EARLY_DEBUG_BASE);
+        exi_io_base = early_debug_area + 0x00006800;
+
+        /* try to detect a USB Gecko */
+        if (!ug_udbg_probe(exi_io_base))
+                return;
+
+        /* we found a USB Gecko, load udbg hooks */
+        udbg_putc = ug_udbg_putc;
+        udbg_getc = ug_udbg_getc;
+        udbg_getc_poll = ug_udbg_getc_poll;
+
+        /*
+         * Prepare again the same BAT for MMU_init.
+         * This allows udbg I/O to continue working after the MMU is
+         * turned on for real.
+         * It is safe to continue using the same virtual address as it is
+         * a reserved fixmap area.
+         */
+        setbat(1, (unsigned long)early_debug_area,
+               ug_early_grab_io_addr(), 128*1024, PAGE_KERNEL_NCG);
+}
+
+#endif /* CONFIG_PPC_EARLY_DEBUG_USBGECKO */
+
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
new file mode 100644
index 000000000000..bb6cde4ad764
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
@@ -0,0 +1,32 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+
+#ifndef __USBGECKO_UDBG_H
+#define __USBGECKO_UDBG_H
+
+#ifdef CONFIG_USBGECKO_UDBG
+
+extern void __init ug_udbg_init(void);
+
+#else
+
+static inline void __init ug_udbg_init(void)
+{
+}
+
+#endif /* CONFIG_USBGECKO_UDBG */
+
+void __init udbg_init_usbgecko(void);
+
+#endif /* __USBGECKO_UDBG_H */
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
new file mode 100644
index 000000000000..57e5b608fa1a
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -0,0 +1,268 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/wii.c
+ *
+ * Nintendo Wii board-specific support
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+#define DRV_MODULE_NAME "wii"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/kexec.h>
+#include <linux/of_platform.h>
+#include <linux/lmb.h>
+#include <mm/mmu_decl.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+#include "flipper-pic.h"
+#include "hlwd-pic.h"
+#include "usbgecko_udbg.h"
+
+/* control block */
+#define HW_CTRL_COMPATIBLE      "nintendo,hollywood-control"
+
+#define HW_CTRL_RESETS          0x94
+#define HW_CTRL_RESETS_SYS      (1<<0)
+
+/* gpio */
+#define HW_GPIO_COMPATIBLE      "nintendo,hollywood-gpio"
+
+#define HW_GPIO_BASE(idx)       (idx * 0x20)
+#define HW_GPIO_OUT(idx)        (HW_GPIO_BASE(idx) + 0)
+#define HW_GPIO_DIR(idx)        (HW_GPIO_BASE(idx) + 4)
+
+#define HW_GPIO_SHUTDOWN        (1<<1)
+#define HW_GPIO_SLOT_LED        (1<<5)
+#define HW_GPIO_SENSOR_BAR      (1<<8)
+
+
+static void __iomem *hw_ctrl;
+static void __iomem *hw_gpio;
+
+unsigned long wii_hole_start;
+unsigned long wii_hole_size;
+
+
+static int __init page_aligned(unsigned long x)
+{
+        return !(x & (PAGE_SIZE-1));
+}
+
+void __init wii_memory_fixups(void)
+{
+        struct lmb_property *p = lmb.memory.region;
+
+        /*
+         * This is part of a workaround to allow the use of two
+         * discontiguous RAM ranges on the Wii, even if this is
+         * currently unsupported on 32-bit PowerPC Linux.
+         *
+         * We coealesce the two memory ranges of the Wii into a
+         * single range, then create a reservation for the "hole"
+         * between both ranges.
+         */
+
+        BUG_ON(lmb.memory.cnt != 2);
+        BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base));
+
+        p[0].size = _ALIGN_DOWN(p[0].size, PAGE_SIZE);
+        p[1].size = _ALIGN_DOWN(p[1].size, PAGE_SIZE);
+
+        wii_hole_start = p[0].base + p[0].size;
+        wii_hole_size = p[1].base - wii_hole_start;
+
+        pr_info("MEM1: <%08llx %08llx>\n", p[0].base, p[0].size);
+        pr_info("HOLE: <%08lx %08lx>\n", wii_hole_start, wii_hole_size);
+        pr_info("MEM2: <%08llx %08llx>\n", p[1].base, p[1].size);
+
+        p[0].size += wii_hole_size + p[1].size;
+
+        lmb.memory.cnt = 1;
+        lmb_analyze();
+
+        /* reserve the hole */
+        lmb_reserve(wii_hole_start, wii_hole_size);
+
+        /* allow ioremapping the address space in the hole */
+        __allow_ioremap_reserved = 1;
+}
+
+unsigned long __init wii_mmu_mapin_mem2(unsigned long top)
+{
+        unsigned long delta, size, bl;
+        unsigned long max_size = (256<<20);
+
+        /* MEM2 64MB@0x10000000 */
+        delta = wii_hole_start + wii_hole_size;
+        size = top - delta;
+        for (bl = 128<<10; bl < max_size; bl <<= 1) {
+                if (bl * 2 > size)
+                        break;
+        }
+        setbat(4, PAGE_OFFSET+delta, delta, bl, PAGE_KERNEL_X);
+        return delta + bl;
+}
+
+static void wii_spin(void)
+{
+        local_irq_disable();
+        for (;;)
+                cpu_relax();
+}
+
+static void __iomem *wii_ioremap_hw_regs(char *name, char *compatible)
+{
+        void __iomem *hw_regs = NULL;
+        struct device_node *np;
+        struct resource res;
+        int error = -ENODEV;
+
+        np = of_find_compatible_node(NULL, NULL, compatible);
+        if (!np) {
+                pr_err("no compatible node found for %s\n", compatible);
+                goto out;
+        }
+        error = of_address_to_resource(np, 0, &res);
+        if (error) {
+                pr_err("no valid reg found for %s\n", np->name);
+                goto out_put;
+        }
+
+        hw_regs = ioremap(res.start, resource_size(&res));
+        if (hw_regs) {
+                pr_info("%s at 0x%08x mapped to 0x%p\n", name,
+                        res.start, hw_regs);
+        }
+
+out_put:
+        of_node_put(np);
+out:
+        return hw_regs;
+}
+
+static void __init wii_setup_arch(void)
+{
+        hw_ctrl = wii_ioremap_hw_regs("hw_ctrl", HW_CTRL_COMPATIBLE);
+        hw_gpio = wii_ioremap_hw_regs("hw_gpio", HW_GPIO_COMPATIBLE);
+        if (hw_gpio) {
+                /* turn off the front blue led and IR light */
+                clrbits32(hw_gpio + HW_GPIO_OUT(0),
+                          HW_GPIO_SLOT_LED | HW_GPIO_SENSOR_BAR);
+        }
+}
+
+static void wii_restart(char *cmd)
+{
+        local_irq_disable();
+
+        if (hw_ctrl) {
+                /* clear the system reset pin to cause a reset */
+                clrbits32(hw_ctrl + HW_CTRL_RESETS, HW_CTRL_RESETS_SYS);
+        }
+        wii_spin();
+}
+
+static void wii_power_off(void)
+{
+        local_irq_disable();
+
+        if (hw_gpio) {
+                /* make sure that the poweroff GPIO is configured as output */
+                setbits32(hw_gpio + HW_GPIO_DIR(1), HW_GPIO_SHUTDOWN);
+
+                /* drive the poweroff GPIO high */
+                setbits32(hw_gpio + HW_GPIO_OUT(1), HW_GPIO_SHUTDOWN);
+        }
+        wii_spin();
+}
+
+static void wii_halt(void)
+{
+        if (ppc_md.restart)
+                ppc_md.restart(NULL);
+        wii_spin();
+}
+
+static void __init wii_init_early(void)
+{
+        ug_udbg_init();
+}
+
+static void __init wii_pic_probe(void)
+{
+        flipper_pic_probe();
+        hlwd_pic_probe();
+}
+
+static int __init wii_probe(void)
+{
+        unsigned long dt_root;
+
+        dt_root = of_get_flat_dt_root();
+        if (!of_flat_dt_is_compatible(dt_root, "nintendo,wii"))
+                return 0;
+
+        return 1;
+}
+
+static void wii_shutdown(void)
+{
+        hlwd_quiesce();
+        flipper_quiesce();
+}
+
+#ifdef CONFIG_KEXEC
+static int wii_machine_kexec_prepare(struct kimage *image)
+{
+        return 0;
+}
+#endif /* CONFIG_KEXEC */
+
+define_machine(wii) {
+        .name                   = "wii",
+        .probe                  = wii_probe,
+        .init_early             = wii_init_early,
+        .setup_arch             = wii_setup_arch,
+        .restart                = wii_restart,
+        .power_off              = wii_power_off,
+        .halt                   = wii_halt,
+        .init_IRQ               = wii_pic_probe,
+        .get_irq                = flipper_pic_get_irq,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+        .machine_shutdown       = wii_shutdown,
+#ifdef CONFIG_KEXEC
+        .machine_kexec_prepare  = wii_machine_kexec_prepare,
+#endif
+};
+
+static struct of_device_id wii_of_bus[] = {
+        { .compatible = "nintendo,hollywood", },
+        { },
+};
+
+static int __init wii_device_probe(void)
+{
+        if (!machine_is(wii))
+                return 0;
+
+        of_platform_bus_probe(NULL, wii_of_bus, NULL);
+        return 0;
+}
+device_initcall(wii_device_probe);
+