[PATCH 01/44 take 2] [UBI] Linux build integration

Artem Bityutskiy
2007-02-17T17:05:54Z

diff -auNrp tmp-from/drivers/mtd/Kconfig tmp-to/drivers/mtd/Kconfig
--- tmp-from/drivers/mtd/Kconfig 2007-02-17 18:07:26.000000000 +0200
+++ tmp-to/drivers/mtd/Kconfig 2007-02-17 18:07:26.000000000 +0200
@@ -292,5 +292,7 @@ source "drivers/mtd/nand/Kconfig"

source "drivers/mtd/onenand/Kconfig"

+source "drivers/mtd/ubi/Kconfig"
+
endmenu

diff -auNrp tmp-from/drivers/mtd/Makefile tmp-to/drivers/mtd/Makefile
--- tmp-from/drivers/mtd/Makefile 2007-02-17 18:07:26.000000000 +0200
+++ tmp-to/drivers/mtd/Makefile 2007-02-17 18:07:26.000000000 +0200
@@ -28,3 +28,5 @@ nftl-objs := nftlcore.o nftlmount.o
inftl-objs := inftlcore.o inftlmount.o

obj-y += chips/ maps/ devices/ nand/ onenand/
+
+obj-$(CONFIG_MTD_UBI) += ubi/
diff -auNrp tmp-from/drivers/mtd/ubi/Kconfig tmp-to/drivers/mtd/ubi/Kconfig
--- tmp-from/drivers/mtd/ubi/Kconfig 1970-01-01 02:00:00.000000000 +0200
+++ tmp-to/drivers/mtd/ubi/Kconfig 2007-02-17 18:07:26.000000000 +0200
@@ -0,0 +1,71 @@
+# drivers/mtd/ubi/Kconfig
+
+menu "UBI - Unsorted block images"
+ depends on MTD
+
+config MTD_UBI
+ tristate "Enable UBI"
+ depends on MTD
+ select CRC32
+ help
+ UBI is a software layer above MTD layer which admits of LVM-like
+ logical volumes on top of MTD devices, hides some complexities of
+ flash chips like wear and bad blocks and provides some other useful
+ capabilities. Please, consult the MTD web site for more details
+ (www.linux-mtd.infradead.org).
+
+config MTD_UBI_WL_THRESHOLD
+ int "UBI wear-leveling threshold"
+ default 4096
+ range 2 65536
+ depends on MTD_UBI
+ help
+ This parameter defines the maximum difference between the highest
+ erase counter value and the lowest erase counter value of eraseblocks
+ of UBI devices. When this threshold is exceeded, UBI starts performing
+ wear leveling by means of moving data from eraseblock with low erase
+ counter to eraseblocks with high erase counter. Leave the default
+ value if unsure.
+
+config MTD_UBI_BEB_RESERVE
+ int "Percentage of reserved eraseblocks for bad eraseblocks handling"
+ default 1
+ range 0 25
+ depends on MTD_UBI
+ help
+ If the MTD device admits of bad eraseblocks (e.g. NAND flash), UBI
+ reserves some amount of physical eraseblocks to handle new bad
+ eraseblocks. For example, if a flash physical eraseblock becomes bad,
+ UBI uses these reserved physical eraseblocks to relocate the bad one.
+ This option specifies how many physical eraseblocks will be reserved
+ for bad eraseblock handling (percents of total number of good flash
+ eraseblocks). If the underlying flash does not admit of bad
+ eraseblocks (e.g. NOR flash), this value is ignored and nothing is
+ reserved. Leave the default value if unsure.
+
+config MTD_UBI_GLUEBI
+ bool "Emulate MTD devices"
+ default n
+ depends on MTD_UBI
+ help
+ This option enables MTD devices emulation on top of UBI volumes: for
+ each UBI volumes an MTD device is created, and all I/O to this MTD
+ device is redirected to the UBI volume. This is handy to make
+ MTD-oriented software (like JFFS2) work on top of UBI. Do not enable
+ this if no legacy software will be used.
+
+config MTD_UBI_USERSPACE_IO
+ bool "UBI user-space write/erase"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ By default, users cannot directly write and erase individual
+ eraseblocks of dynamic volumes, and have to use update operation.
+ This option enables this capability. Disabling this feature is more
+ robust because it discourage users from using tools like 'dd' to copy
+ their images to UBI volumes. Do not enable if unsure.
+
+# There are a lot of debugging options, so they are moved to a distinct file
+source "drivers/mtd/ubi/Kconfig.debug"
+
+endmenu
diff -auNrp tmp-from/drivers/mtd/ubi/Kconfig.debug tmp-to/drivers/mtd/ubi/Kconfig.debug
--- tmp-from/drivers/mtd/ubi/Kconfig.debug 1970-01-01 02:00:00.000000000 +0200
+++ tmp-to/drivers/mtd/ubi/Kconfig.debug 2007-02-17 18:07:26.000000000 +0200
@@ -0,0 +1,218 @@
+# UBI debugging configuration options, part of drivers/mtd/ubi/Kconfig
+
+comment "UBI debugging options"
+ depends on MTD_UBI
+
+config MTD_UBI_DEBUG
+ bool "UBI debugging"
+ default n
+ depends on MTD_UBI
+ select DEBUG_FS
+ select KALLSYMS_ALL
+ help
+ This enables UBI debugging support: enables various assertions in the
+ code, verbose debugging messages and allows to switch many other
+ debugging features on. UBI exposes its debugging stuff via the Linux
+ debugfs virtual file-system under the "ubi" directory. Mount debugfs
+ to access this stuff: mount -t debugfs none <mount_point>
+
+config MTD_UBI_DEBUG_DISABLE_BGT
+ bool "Do not enable the UBI background thread"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option switches the background thread off by default. The thread
+ may be also be enabled/disabled via UBI sysfs.
+
+config MTD_UBI_DEBUG_EMULATE_BITFLIPS
+ bool "Emulate flash bit-flips"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option emulates bit-flips with probability 1/50, which in turn
+ causes scrubbing. Useful for debugging and stressing UBI.
+
+config MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES
+ bool "Emulate flash write failures"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option emulates write failures with probability 1/100. Useful for
+ debugging and testing how UBI handlines errors.
+
+config MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES
+ bool "Emulate flash erase failures"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option emulates erase failures with probability 1/100. Useful for
+ debugging and testing how UBI handlines errors.
+
+menu "UBI debugging messages"
+ depends on MTD_UBI_DEBUG
+
+config MTD_UBI_DEBUG_MSG_VB_ERR
+ bool "Verbose errors reporting"
+ depends on MTD_UBI_DEBUG
+ default y
+ help
+ This option enables verbose reporting about errors occurred in UBI.
+
+config MTD_UBI_DEBUG_MSG_UIF
+ bool "User interface unit messages"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables debugging messages from the UBI user interfaces
+ unit.
+
+config MTD_UBI_DEBUG_MSG_CDEV
+ bool "Messages from the character device sub-unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables debugging messages from the UBI character device
+ handling sub-unit of the user interfaces unit.
+
+config MTD_UBI_DEBUG_MSG_GLUEBI
+ bool "Messages from the gluebi sub-unit"
+ depends on MTD_UBI_DEBUG
+ depends on MTD_UBI_GLUEBI
+ default n
+ help
+ This option enables debugging messages from the gluebi (MTD devices
+ emulation) sub-unit of the user interfaces unit.
+
+config MTD_UBI_DEBUG_MSG_VMT
+ bool "Volume management unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI volume management
+ unit.
+
+config MTD_UBI_DEBUG_MSG_UPD
+ bool "Update unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI update unit.
+
+config MTD_UBI_DEBUG_MSG_VTBL
+ bool "Volume table unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI volume table
+ unit.
+
+config MTD_UBI_DEBUG_MSG_ACC
+ bool "Accounting unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI accountig unit.
+
+config MTD_UBI_DEBUG_MSG_EBA
+ bool "Eraseblock association unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI eraseblock
+ association unit.
+
+config MTD_UBI_DEBUG_MSG_WL
+ bool "Wear-leveling unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI wear-leveling
+ unit.
+
+config MTD_UBI_DEBUG_MSG_BGT
+ bool "Background thread unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI background thread
+ unit.
+
+config MTD_UBI_DEBUG_MSG_IO
+ bool "Input/output unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI input/output unit.
+
+config MTD_UBI_DEBUG_MSG_BLD
+ bool "Build unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI build unit.
+
+config MTD_UBI_DEBUG_MSG_SCAN
+ bool "Scanning unit messages"
+ default n
+ depends on MTD_UBI_DEBUG
+ help
+ This option enables debugging messages from the UBI scanning unit.
+
+endmenu # UBI debugging messages
+
+menu "UBI paranoid checks"
+ depends on MTD_UBI_DEBUG
+
+config MTD_UBI_DEBUG_PARANOID_VMT
+ bool "Paranoid checks in the volume management unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the volume management unit.
+
+config MTD_UBI_DEBUG_PARANOID_VTBL
+ bool "Paranoid checks in the volume table unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the volume table unit.
+
+config MTD_UBI_DEBUG_PARANOID_EBA
+ bool "Paranoid checks in the eraseblock association unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the eraseblock association
+ unit.
+
+config MTD_UBI_DEBUG_PARANOID_WL
+ bool "Paranoid checks in the wear-leveling unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the wear-leveling unit.
+
+config MTD_UBI_DEBUG_PARANOID_ALLOC
+ bool "Paranoid checks in the memory allocation unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the memory allocation unit.
+
+config MTD_UBI_DEBUG_PARANOID_IO
+ bool "Paranoid checks in the input/output unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the input/output unit.
+ Warning, this is rather heavy-weight and will slow UBI down.
+
+config MTD_UBI_DEBUG_PARANOID_SCAN
+ bool "Paranoid checks in the scanning unit"
+ depends on MTD_UBI_DEBUG
+ default n
+ help
+ This option enables extra self-checks in the scanning unit. Warning,
+ this is rather heavy-weight and will slow UBI down.
+
+endmenu # UBI paranoid checks
diff -auNrp tmp-from/drivers/mtd/ubi/Makefile tmp-to/drivers/mtd/ubi/Makefile
--- tmp-from/drivers/mtd/ubi/Makefile 1970-01-01 02:00:00.000000000 +0200
+++ tmp-to/drivers/mtd/ubi/Makefile 2007-02-17 18:07:26.000000000 +0200
@@ -0,0 +1,7 @@
+obj-$(CONFIG_MTD_UBI) += ubi.o
+
+ubi-y += badeb.o upd.o sysfs.o cdev.o uif.o vtbl.o volmgmt.o eba.o io.o wl.o
+ubi-y += scan.o build.o background.o alloc.o init.o account.o misc.o
+
+ubi-$(CONFIG_MTD_UBI_DEBUG) += debug.o
+ubi-$(CONFIG_MTD_UBI_GLUEBI) += gluebi.o
diff -auNrp tmp-from/include/mtd/Kbuild tmp-to/include/mtd/Kbuild
--- tmp-from/include/mtd/Kbuild 2007-02-17 18:07:26.000000000 +0200
+++ tmp-to/include/mtd/Kbuild 2007-02-17 18:07:26.000000000 +0200
@@ -3,3 +3,5 @@ header-y += jffs2-user.h
header-y += mtd-abi.h
header-y += mtd-user.h
header-y += nftl-user.h
+header-y += ubi-header.h
+header-y += ubi-user.h