aboutsummaryrefslogtreecommitdiff
path: root/arch/xtensa/Kconfig
diff options
context:
space:
mode:
authorVictor Prupis <vnp@vnp_fc3.hq.tensilica.com>2008-05-19 14:50:38 -0700
committerChris Zankel <chris@zankel.net>2013-02-23 19:22:41 -0800
commitb6c7e873daf765e41233b9752083b66442703b7a (patch)
treef073ce1cf3f0ce32e4f4d177348d8aece9d8040b /arch/xtensa/Kconfig
parentc5a285bb1b54e8b636cb522a9eb9c9ad232a23f8 (diff)
downloadlinux-b6c7e873daf765e41233b9752083b66442703b7a.tar.gz
xtensa: ISS: add host file-based simulated disk
Simdisk is a block device that maps to a file in the host file system. It is usable for testing in the simulated environment, like xt-sim or QEMU. Device binding to host file may be changed at runtime via proc interface provided the device is not in use. Number of block devices and initial binding to host files is controlled via kernel/module parameters, with defaults specified in the kernel configuration. Signed-off-by: Victor Prupis <vnp@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/Kconfig')
-rw-r--r--arch/xtensa/Kconfig36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 79f0a2acf25..f83780f8f29 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -203,6 +203,42 @@ config BUILTIN_DTB
string "DTB to build into the kernel image"
depends on OF
+config BLK_DEV_SIMDISK
+ tristate "Host file-based simulated block device support"
+ default n
+ depends on XTENSA_PLATFORM_ISS
+ help
+ Create block devices that map to files in the host file system.
+ Device binding to host file may be changed at runtime via proc
+ interface provided the device is not in use.
+
+config BLK_DEV_SIMDISK_COUNT
+ int "Number of host file-based simulated block devices"
+ range 1 10
+ depends on BLK_DEV_SIMDISK
+ default 2
+ help
+ This is the default minimal number of created block devices.
+ Kernel/module parameter 'simdisk_count' may be used to change this
+ value at runtime. More file names (but no more than 10) may be
+ specified as parameters, simdisk_count grows accordingly.
+
+config SIMDISK0_FILENAME
+ string "Host filename for the first simulated device"
+ depends on BLK_DEV_SIMDISK = y
+ default ""
+ help
+ Attach a first simdisk to a host file. Conventionally, this file
+ contains a root file system.
+
+config SIMDISK1_FILENAME
+ string "Host filename for the second simulated device"
+ depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1
+ default ""
+ help
+ Another simulated disk in a host file for a buildroot-independent
+ storage.
+
source "mm/Kconfig"
source "drivers/pcmcia/Kconfig"