|author||David Gibson <firstname.lastname@example.org>||2008-11-05 14:20:17 +0000|
|committer||Paul Mackerras <email@example.com>||2008-11-19 16:04:25 +1100|
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 <firstname.lastname@example.org> Signed-off-by: Paul Mackerras <email@example.com>
Diffstat (limited to 'drivers/char/Kconfig')
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 43b35d0369d..19e255c49f1 100644
@@ -631,6 +631,12 @@ config HVC_XEN
Xen virtual console device driver
+ bool "udbg based fake hypervisor console"
+ depends on PPC && EXPERIMENTAL
+ select HVC_DRIVER
+ default n
tristate "Virtio console"
depends on VIRTIO