* [PATCH] Qemu system shutdown support
@ 2006-05-15 17:25 Thiemo Seufer
2006-05-15 17:30 ` Martin Michlmayr
2006-05-16 17:50 ` Ralf Baechle
0 siblings, 2 replies; 4+ messages in thread
From: Thiemo Seufer @ 2006-05-15 17:25 UTC (permalink / raw)
To: linux-mips; +Cc: ralf
Support for qemu system shutdown.
Signed-off-by: Thiemo Seufer <ths@networkno.de>
diff -urpN linux-orig/arch/mips/qemu/Makefile linux-work/arch/mips/qemu/Makefile
--- linux-orig/arch/mips/qemu/Makefile 2006-04-24 12:02:26.000000000 +0100
+++ linux-work/arch/mips/qemu/Makefile 2006-05-15 03:07:31.000000000 +0100
@@ -2,7 +2,7 @@
# Makefile for Qemu specific kernel interface routines under Linux.
#
-obj-y = q-firmware.o q-irq.o q-mem.o q-setup.o
+obj-y = q-firmware.o q-irq.o q-mem.o q-setup.o q-reset.o
obj-$(CONFIG_VT) += q-vga.o
obj-$(CONFIG_SMP) += q-smp.o
diff -urpN linux-orig/arch/mips/qemu/q-reset.c linux-work/arch/mips/qemu/q-reset.c
--- linux-orig/arch/mips/qemu/q-reset.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-work/arch/mips/qemu/q-reset.c 2006-05-15 03:06:44.000000000 +0100
@@ -0,0 +1,34 @@
+#include <linux/config.h>
+
+#include <asm/io.h>
+#include <asm/reboot.h>
+#include <asm/cacheflush.h>
+#include <asm/qemu.h>
+
+static void qemu_machine_restart(char *command)
+{
+ volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
+
+ set_c0_status(ST0_BEV | ST0_ERL);
+ change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+ flush_cache_all();
+ write_c0_wired(0);
+ *reg = 42;
+ while (1)
+ cpu_wait();
+}
+
+static void qemu_machine_halt(void)
+{
+ volatile unsigned int *reg = (unsigned int *)QEMU_HALT_REG;
+
+ *reg = 42;
+ while (1)
+ cpu_wait();
+}
+
+void qemu_reboot_setup(void)
+{
+ _machine_restart = qemu_machine_restart;
+ _machine_halt = qemu_machine_halt;
+}
diff -urpN linux-orig/arch/mips/qemu/q-setup.c linux-work/arch/mips/qemu/q-setup.c
--- linux-orig/arch/mips/qemu/q-setup.c 2006-04-24 12:02:26.000000000 +0100
+++ linux-work/arch/mips/qemu/q-setup.c 2006-05-15 03:06:44.000000000 +0100
@@ -3,6 +3,7 @@
#include <asm/time.h>
extern void qvga_init(void);
+extern void qemu_reboot_setup(void);
#define QEMU_PORT_BASE 0xb4000000
@@ -27,4 +28,6 @@ void __init plat_setup(void)
qvga_init();
#endif
board_timer_setup = qemu_timer_setup;
+
+ qemu_reboot_setup();
}
diff -urpN linux-orig/include/asm-mips/qemu.h linux-work/include/asm-mips/qemu.h
--- linux-orig/include/asm-mips/qemu.h 2006-04-24 12:02:35.000000000 +0100
+++ linux-work/include/asm-mips/qemu.h 2006-05-15 03:06:44.000000000 +0100
@@ -21,4 +21,10 @@
*/
#define QEMU_C0_COUNTER_CLOCK 100000000
+/*
+ * Magic qemu system control location.
+ */
+#define QEMU_RESTART_REG 0xBFBF0000
+#define QEMU_HALT_REG 0xBFBF0004
+
#endif /* __ASM_QEMU_H */
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] Qemu system shutdown support
2006-05-15 17:25 [PATCH] Qemu system shutdown support Thiemo Seufer
@ 2006-05-15 17:30 ` Martin Michlmayr
2006-05-15 17:59 ` Thiemo Seufer
2006-05-16 17:50 ` Ralf Baechle
1 sibling, 1 reply; 4+ messages in thread
From: Martin Michlmayr @ 2006-05-15 17:30 UTC (permalink / raw)
To: linux-mips, ralf
* Thiemo Seufer <ths@networkno.de> [2006-05-15 18:25]:
> +{
> + volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
This should be a tab.
--
Martin Michlmayr
http://www.cyrius.com/
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] Qemu system shutdown support
2006-05-15 17:30 ` Martin Michlmayr
@ 2006-05-15 17:59 ` Thiemo Seufer
0 siblings, 0 replies; 4+ messages in thread
From: Thiemo Seufer @ 2006-05-15 17:59 UTC (permalink / raw)
To: Martin Michlmayr; +Cc: linux-mips, ralf
Martin Michlmayr wrote:
> * Thiemo Seufer <ths@networkno.de> [2006-05-15 18:25]:
> > +{
> > + volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
>
> This should be a tab.
Updated.
Support for qemu system shutdown.
Signed-off-by: Thiemo Seufer <ths@networkno.de>
diff -urpN linux-orig/arch/mips/qemu/Makefile linux-work/arch/mips/qemu/Makefile
--- linux-orig/arch/mips/qemu/Makefile 2006-04-24 12:02:26.000000000 +0100
+++ linux-work/arch/mips/qemu/Makefile 2006-05-15 03:07:31.000000000 +0100
@@ -2,7 +2,7 @@
# Makefile for Qemu specific kernel interface routines under Linux.
#
-obj-y = q-firmware.o q-irq.o q-mem.o q-setup.o
+obj-y = q-firmware.o q-irq.o q-mem.o q-setup.o q-reset.o
obj-$(CONFIG_VT) += q-vga.o
obj-$(CONFIG_SMP) += q-smp.o
diff -urpN linux-orig/arch/mips/qemu/q-reset.c linux-work/arch/mips/qemu/q-reset.c
--- linux-orig/arch/mips/qemu/q-reset.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-work/arch/mips/qemu/q-reset.c 2006-05-15 03:06:44.000000000 +0100
@@ -0,0 +1,34 @@
+#include <linux/config.h>
+
+#include <asm/io.h>
+#include <asm/reboot.h>
+#include <asm/cacheflush.h>
+#include <asm/qemu.h>
+
+static void qemu_machine_restart(char *command)
+{
+ volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
+
+ set_c0_status(ST0_BEV | ST0_ERL);
+ change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+ flush_cache_all();
+ write_c0_wired(0);
+ *reg = 42;
+ while (1)
+ cpu_wait();
+}
+
+static void qemu_machine_halt(void)
+{
+ volatile unsigned int *reg = (unsigned int *)QEMU_HALT_REG;
+
+ *reg = 42;
+ while (1)
+ cpu_wait();
+}
+
+void qemu_reboot_setup(void)
+{
+ _machine_restart = qemu_machine_restart;
+ _machine_halt = qemu_machine_halt;
+}
diff -urpN linux-orig/arch/mips/qemu/q-setup.c linux-work/arch/mips/qemu/q-setup.c
--- linux-orig/arch/mips/qemu/q-setup.c 2006-04-24 12:02:26.000000000 +0100
+++ linux-work/arch/mips/qemu/q-setup.c 2006-05-15 03:06:44.000000000 +0100
@@ -3,6 +3,7 @@
#include <asm/time.h>
extern void qvga_init(void);
+extern void qemu_reboot_setup(void);
#define QEMU_PORT_BASE 0xb4000000
@@ -27,4 +28,6 @@ void __init plat_setup(void)
qvga_init();
#endif
board_timer_setup = qemu_timer_setup;
+
+ qemu_reboot_setup();
}
diff -urpN linux-orig/include/asm-mips/qemu.h linux-work/include/asm-mips/qemu.h
--- linux-orig/include/asm-mips/qemu.h 2006-04-24 12:02:35.000000000 +0100
+++ linux-work/include/asm-mips/qemu.h 2006-05-15 03:06:44.000000000 +0100
@@ -21,4 +21,10 @@
*/
#define QEMU_C0_COUNTER_CLOCK 100000000
+/*
+ * Magic qemu system control location.
+ */
+#define QEMU_RESTART_REG 0xBFBF0000
+#define QEMU_HALT_REG 0xBFBF0004
+
#endif /* __ASM_QEMU_H */
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Qemu system shutdown support
2006-05-15 17:25 [PATCH] Qemu system shutdown support Thiemo Seufer
2006-05-15 17:30 ` Martin Michlmayr
@ 2006-05-16 17:50 ` Ralf Baechle
1 sibling, 0 replies; 4+ messages in thread
From: Ralf Baechle @ 2006-05-16 17:50 UTC (permalink / raw)
To: Thiemo Seufer; +Cc: linux-mips
On Mon, May 15, 2006 at 06:25:58PM +0100, Thiemo Seufer wrote:
> Support for qemu system shutdown.
Queued,
Ralf
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-05-16 17:50 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2006-05-15 17:25 [PATCH] Qemu system shutdown support Thiemo Seufer
2006-05-15 17:30 ` Martin Michlmayr
2006-05-15 17:59 ` Thiemo Seufer
2006-05-16 17:50 ` Ralf Baechle
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