| From: |
| "Ed Schouten" <ed@il.fontys.nl> |
| To: |
| linux-kernel@vger.kernel.org |
| Subject: |
| [Patch 4/5] xbox: add reboot code |
| Date: |
| Sat, 9 Oct 2004 22:04:03 +0200 (CEST) |
| Cc: |
| akpm@osdl.org |
The Microsoft Xbox uses a different method to reboot or halt the system.
Therefore, we need to add some functions to alternatively shutdown the
system.
You can also download this patch at:
http://linux.g-rave.nl/patches/patch-xbox-reboot.diff
---
arch/i386/Makefile | 3 +++
arch/i386/mach-xbox/Makefile | 5 +++++
arch/i386/mach-xbox/reboot.c | 39 +++++++++++++++++++++++++++++++++++++++
include/asm-i386/xbox.h | 17 +++++++++++++++++
4 files changed, 64 insertions(+)
diff -u -r --new-file linux-2.6.9-rc3/arch/i386/Makefile
linux-2.6.9-rc3-ed0/arch/i386/Makefile
--- linux-2.6.9-rc3/arch/i386/Makefile 2004-09-30 05:04:26.000000000 +0200
+++ linux-2.6.9-rc3-ed0/arch/i386/Makefile 2004-10-09 21:08:11.380284000
+0200
@@ -69,6 +69,9 @@
mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-i386/mach-voyager
mcore-$(CONFIG_X86_VOYAGER) := mach-voyager
+# Xbox subarch support
+core-$(CONFIG_X86_XBOX) += arch/i386/mach-xbox/
+
# VISWS subarch support
mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-i386/mach-visws
mcore-$(CONFIG_X86_VISWS) := mach-visws
diff -u -r --new-file linux-2.6.9-rc3/arch/i386/mach-xbox/Makefile
linux-2.6.9-rc3-ed0/arch/i386/mach-xbox/Makefile
--- linux-2.6.9-rc3/arch/i386/mach-xbox/Makefile 1970-01-01
01:00:00.000000000 +0100
+++ linux-2.6.9-rc3-ed0/arch/i386/mach-xbox/Makefile 2004-10-09
21:08:11.401284000 +0200
@@ -0,0 +1,5 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-y := reboot.o
diff -u -r --new-file linux-2.6.9-rc3/arch/i386/mach-xbox/reboot.c
linux-2.6.9-rc3-ed0/arch/i386/mach-xbox/reboot.c
--- linux-2.6.9-rc3/arch/i386/mach-xbox/reboot.c 1970-01-01
01:00:00.000000000 +0100
+++ linux-2.6.9-rc3-ed0/arch/i386/mach-xbox/reboot.c 2004-10-09
21:08:30.105284000 +0200
@@ -0,0 +1,39 @@
+/*
+ * arch/i386/mach-xbox/reboot.c
+ * Ed Schouten <ed@il.fontys.nl>
+ *
+ * Originally done by:
+ * Olivier Fauchon <olivier.fauchon@free.fr>
+ * Anders Gustafsson <andersg@0x63.nu>
+ *
+ */
+
+#include <asm/io.h>
+#include <asm-i386/xbox.h>
+
+/* we don't use any of those, but dmi_scan.c needs 'em */
+void (*pm_power_off)(void);
+int reboot_thru_bios;
+
+static void xbox_pic_cmd(u8 command)
+{
+ outw_p(((XBOX_PIC_ADDRESS) << 1), XBOX_SMB_HOST_ADDRESS);
+ outb_p(SMC_CMD_POWER, XBOX_SMB_HOST_COMMAND);
+ outw_p(command, XBOX_SMB_HOST_DATA);
+ outw_p(inw(XBOX_SMB_IO_BASE), XBOX_SMB_IO_BASE);
+ outb_p(0x0a, XBOX_SMB_GLOBAL_ENABLE);
+}
+
+void machine_restart(char * __unused)
+{
+ xbox_pic_cmd(SMC_SUBCMD_POWER_CYCLE);
+}
+
+void machine_power_off(void)
+{
+ xbox_pic_cmd(SMC_SUBCMD_POWER_OFF);
+}
+
+void machine_halt(void)
+{
+}
diff -u -r --new-file linux-2.6.9-rc3/include/asm-i386/xbox.h
linux-2.6.9-rc3-ed0/include/asm-i386/xbox.h
--- linux-2.6.9-rc3/include/asm-i386/xbox.h 1970-01-01 01:00:00.000000000
+0100
+++ linux-2.6.9-rc3-ed0/include/asm-i386/xbox.h 2004-10-09
21:08:11.448284000 +0200
@@ -0,0 +1,17 @@
+/*
+ * include/asm-i386/xbox.h
+ * Ed Schouten <ed@il.fontys.nl>
+ */
+
+#define XBOX_SMB_IO_BASE 0xC000
+#define XBOX_SMB_HOST_ADDRESS (0x4 + XBOX_SMB_IO_BASE)
+#define XBOX_SMB_HOST_COMMAND (0x8 + XBOX_SMB_IO_BASE)
+#define XBOX_SMB_HOST_DATA (0x6 + XBOX_SMB_IO_BASE)
+#define XBOX_SMB_GLOBAL_ENABLE (0x2 + XBOX_SMB_IO_BASE)
+
+#define XBOX_PIC_ADDRESS 0x10
+
+#define SMC_CMD_POWER 0x02
+#define SMC_SUBCMD_POWER_RESET 0x01
+#define SMC_SUBCMD_POWER_CYCLE 0x40
+#define SMC_SUBCMD_POWER_OFF 0x80
-
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