This patch against 2.6.10 adds key 'o' to the Magic SysRq commands, which
drops down to the OpenBoot prompt.
Martin
Signed-off-by: Martin Habets <[EMAIL PROTECTED]>
--- linux-2.6/arch/sparc/kernel/setup.c.orig 2005-01-13 20:01:11.000000000
+0000
+++ linux-2.6/arch/sparc/kernel/setup.c 2005-08-17 21:33:24.000000000 +0100
@@ -31,6 +31,7 @@
#include <linux/console.h>
#include <linux/spinlock.h>
#include <linux/root_dev.h>
+#include <linux/sysrq.h>
#include <asm/segment.h>
#include <asm/system.h>
@@ -222,6 +223,22 @@
}
}
+#ifdef CONFIG_MAGIC_SYSRQ
+static void sysrq_handle_openboot(int key, struct pt_regs *regs,
+ struct tty_struct *tty)
+{
+ stop_a_enabled = 1;
+ sun_do_break();
+}
+
+static struct sysrq_key_op sysrq_openboot_op =
+{
+ .handler = sysrq_handle_openboot,
+ .help_msg = "Openboot",
+ .action_msg = "Entering OpenBoot",
+};
+#endif
+
/* This routine will in the future do all the nasty prom stuff
* to probe for the mmu type and its parameters, etc. This will
* also be where SMP things happen plus the Sparc specific memory
@@ -352,6 +369,10 @@
init_task.thread.kregs = &fake_swapper_regs;
paging_init();
+
+#ifdef CONFIG_MAGIC_SYSRQ
+ register_sysrq_key('o', &sysrq_openboot_op);
+#endif
}
static int __init set_preferred_console(void)
-
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