Messages in this thread Patch in this message | | | Date | Sun, 29 Jul 2007 19:25:21 +0100 | From | "Adrian McMenamin" <> | Subject | Fwd: [PATCH] Reboot Dreamcast under software control |
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Apologies. I meant to cc: this to the lists first time round and appear to have bcc'ed it instead.
---------- Forwarded message ---------- From: Adrian McMenamin <lkmladrian@gmail.com> Date: 29-Jul-2007 19:04 Subject: [PATCH] Reboot Dreamcast under software control To: lethal@linux-sh.org
In the light of more up to date technical information I have discovered there is a register at physical address 0x005F6890 on the Dreamcast that if written a magic number (0x00007611) will force a reboot under software control.
Presumably a better option than the current catch-all mechanism.
Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 6334a4c..6f5e9e4 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -97,6 +97,11 @@ void cpu_idle(void)
void machine_restart(char * __unused) { + +#ifdef CONFIG_SH_DREAMCAST + /*reboot the Dreamcast under software control*/ + writel(0x00007611, 0xA05F6890); +#endif /* SR.BL=1 and invoke address error to let CPU reset (manual reset) */ asm volatile("ldc %0, sr\n\t" "mov.l @%1, %0" : : "r" (0x10000000), "r" (0x80000001)); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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