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authorDavid Gibson <david@gibson.dropbear.id.au>2008-11-05 14:20:17 +0000
committerPaul Mackerras <paulus@samba.org>2008-11-19 16:04:25 +1100
commitd5e54913433fff89609adfc4b96fefcf807a9030 (patch)
tree6ab66827c98837a86a2b4f0e77732c43238db5a0 /drivers/char/Kconfig
parent8c6531868d4917adbd363030f28a734b76c7471a (diff)
downloadlinux-d5e54913433fff89609adfc4b96fefcf807a9030.tar.gz
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/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 43b35d0369d..19e255c49f1 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