Hi!
> This patch some small hooks into the normal serial core so that a uart
> can be unregistered to be exclusively used for KGDB. These changes
> allow for registering and unregistering a port with a struct
> uart_port. From that point on KGDB does raw accesses to the serial
> IO ports it has taken over.
>
> CC: linux-serial@xxxxxxxxxxxxxxx
> Signed-off-by: Jason Wessel <jason.wessel@xxxxxxxxxxxxx>
> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxx>
> Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> ---
> Documentation/DocBook/kgdb.tmpl | 44 ++++
> drivers/serial/8250.c | 30 +++
> drivers/serial/8250_kgdb.c | 489 +++++++++++++++++++++++++++++++++++++++
> drivers/serial/Kconfig | 2 +-
> drivers/serial/Makefile | 1 +
> drivers/serial/serial_core.c | 18 ++-
> include/linux/serial_8250.h | 2 +
> lib/Kconfig.kgdb | 21 ++
> 8 files changed, 603 insertions(+), 4 deletions(-)
> create mode 100644 drivers/serial/8250_kgdb.c
>
> diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl
> index c423411..111a2a0 100644
> --- a/Documentation/DocBook/kgdb.tmpl
> +++ b/Documentation/DocBook/kgdb.tmpl
> @@ -92,6 +92,50 @@
> <chapter id="BootingTheKernel">
> <title>Booting the kernel</title>
> <para>
> + The Kernel command line option <constant>kgdbwait</constant> makes kgdb
> + wait for gdb connection during booting of a kernel. If the
> + <symbol>CONFIG_KGDB_8250</symbol> driver is used (or if applicable,
> + another serial driver) this breakpoint will happen very early on, before
> + console output.
> + </para>
I believe we already have command line options listed in different
file... and in readable format, too.
> --- /dev/null
> +++ b/drivers/serial/8250_kgdb.c
> @@ -0,0 +1,489 @@
> +/*
> + * 8250 serial I/O driver for KGDB.
> + *
> + * This is a merging of many different drivers, and all of the people have
> + * had an impact in some form or another:
> + *
> + * 2004-2005 (c) MontaVista Software, Inc.
> + * 2005-2006 (c) Wind River Systems, Inc.
Hmm, is it WindRiver or
WinDriver? :-)
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
-
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
