From: Albert Herranz <albert_herranz@yahoo.es>
To: linuxppc-dev@lists.ozlabs.org
Cc: Albert Herranz <albert_herranz@yahoo.es>
Subject: [RFC PATCH v2 5/6] powerpc: wii: platform support
Date: Thu, 3 Dec 2009 23:47:26 +0100 [thread overview]
Message-ID: <1259880447-5008-6-git-send-email-albert_herranz@yahoo.es> (raw)
In-Reply-To: <1259880447-5008-1-git-send-email-albert_herranz@yahoo.es>
Add platform support for the Nintendo Wii video game console.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Get rid of show_cpuinfo hooks. Suggestion by Grant Likely.
- Drop unneeded (at this stage) empty functions. Suggestion by Grant Likely.
- Merge wii.c and wii_dev.c into a single file. Suggestion by Grant Likely.
- Use "wii" instead of "rvl" as a pr prefix. Suggestion by Segher Boessenkool.
- Assume 'mini'-like firmware environment.
arch/powerpc/platforms/embedded6xx/Kconfig | 8 +
arch/powerpc/platforms/embedded6xx/Makefile | 2 +-
arch/powerpc/platforms/embedded6xx/wii.c | 195 +++++++++++++++++++++++++++
3 files changed, 204 insertions(+), 1 deletions(-)
create mode 100644 arch/powerpc/platforms/embedded6xx/wii.c
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index e318ced..524d971 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -115,3 +115,11 @@ config GAMECUBE
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 f75b9e4..66c23e4 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -10,4 +10,4 @@ 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-$(CONFIG_WII) += hlwd-pic.o
+obj-$(CONFIG_WII) += wii.o hlwd-pic.o
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
new file mode 100644
index 0000000..f445472
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -0,0 +1,195 @@
+/*
+ * 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 <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)
+
+
+static void __iomem *hw_ctrl;
+static void __iomem *hw_gpio;
+
+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);
+}
+
+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);
+
--
1.6.3.3
next prev parent reply other threads:[~2009-12-03 22:47 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-03 22:47 [RFC PATCH v2 0/6] powerpc: nintendo wii support Albert Herranz
2009-12-03 22:47 ` [RFC PATCH v2 1/6] powerpc: wii: device tree Albert Herranz
2009-12-04 15:25 ` Segher Boessenkool
2009-12-04 16:54 ` Albert Herranz
2009-12-11 21:59 ` Benjamin Herrenschmidt
2009-12-03 22:47 ` [RFC PATCH v2 2/6] powerpc: wii: bootwrapper bits Albert Herranz
2009-12-09 16:23 ` Segher Boessenkool
2009-12-11 21:59 ` Benjamin Herrenschmidt
2009-12-03 22:47 ` [RFC PATCH v2 3/6] powerpc: broadway processor support Albert Herranz
2009-12-11 21:59 ` Benjamin Herrenschmidt
2009-12-03 22:47 ` [RFC PATCH v2 4/6] powerpc: wii: hollywood interrupt controller support Albert Herranz
2009-12-11 22:01 ` Benjamin Herrenschmidt
2009-12-12 15:12 ` Segher Boessenkool
2009-12-03 22:47 ` Albert Herranz [this message]
2009-12-12 15:14 ` [RFC PATCH v2 5/6] powerpc: wii: platform support Segher Boessenkool
2009-12-03 22:47 ` [RFC PATCH v2 6/6] powerpc: wii: default config Albert Herranz
2009-12-11 22:02 ` Benjamin Herrenschmidt
2009-12-11 23:52 ` [RFC PATCH v2 0/6] powerpc: nintendo wii support Grant Likely
2009-12-12 0:18 ` Albert Herranz
2009-12-12 6:47 ` Grant Likely
2009-12-12 9:35 ` Albert Herranz
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