diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2008-11-05 17:20:17 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-11-19 08:04:25 +0300 |
| commit | d5e54913433fff89609adfc4b96fefcf807a9030 (patch) | |
| tree | 6ab66827c98837a86a2b4f0e77732c43238db5a0 /drivers/char/Kconfig | |
| parent | 8c6531868d4917adbd363030f28a734b76c7471a (diff) | |
| download | linux-d5e54913433fff89609adfc4b96fefcf807a9030.tar.xz | |
powerpc: udbg-based backend for hvc_console
This adds a new backend for the hvc console based on the low-level
udbg callbacks. This effectively implements a working runtime console
in terms of the simple udbg primitives. This is kind of a hack -
since udbg isn't something you really want to be using routinely - but
it's really useful during bringup.
This can be used to quickly implement a userspace-usable console while
you're working on a proper driver for whatever console I/O device the
hardware has. Or, it can be used to avoid writing a full blown
tty/console driver entirely for quick-and-dirty I/O hardware that will
later be replaced by something else.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/char/Kconfig')
| -rw-r--r-- | drivers/char/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 43b35d0369d6..19e255c49f15 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -631,6 +631,12 @@ config HVC_XEN help Xen virtual console device driver +config HVC_UDBG + bool "udbg based fake hypervisor console" + depends on PPC && EXPERIMENTAL + select HVC_DRIVER + default n + config VIRTIO_CONSOLE tristate "Virtio console" depends on VIRTIO |