mirror of https://gitee.com/openkylin/linux.git
318 lines
12 KiB
Plaintext
318 lines
12 KiB
Plaintext
menu "Self-contained MTD device drivers"
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depends on MTD!=n
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config MTD_PMC551
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tristate "Ramix PMC551 PCI Mezzanine RAM card support"
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depends on PCI
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---help---
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This provides a MTD device driver for the Ramix PMC551 RAM PCI card
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from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
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These devices come in memory configurations from 32M - 1G. If you
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have one, you probably want to enable this.
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If this driver is compiled as a module you get the ability to select
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the size of the aperture window pointing into the devices memory.
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What this means is that if you have a 1G card, normally the kernel
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will use a 1G memory map as its view of the device. As a module,
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you can select a 1M window into the memory and the driver will
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"slide" the window around the PMC551's memory. This was
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particularly useful on the 2.2 kernels on PPC architectures as there
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was limited kernel space to deal with.
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config MTD_PMC551_BUGFIX
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bool "PMC551 256M DRAM Bugfix"
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depends on MTD_PMC551
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help
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Some of Ramix's PMC551 boards with 256M configurations have invalid
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column and row mux values. This option will fix them, but will
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break other memory configurations. If unsure say N.
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config MTD_PMC551_DEBUG
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bool "PMC551 Debugging"
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depends on MTD_PMC551
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help
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This option makes the PMC551 more verbose during its operation and
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is only really useful if you are developing on this driver or
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suspect a possible hardware or driver bug. If unsure say N.
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config MTD_MS02NV
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tristate "DEC MS02-NV NVRAM module support"
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depends on MACH_DECSTATION
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help
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This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
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backed-up NVRAM module. The module was originally meant as an NFS
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accelerator. Say Y here if you have a DECstation 5000/2x0 or a
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DECsystem 5900 equipped with such a module.
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If you want to compile this driver as a module ( = code which can be
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inserted in and removed from the running kernel whenever you want),
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say M here and read <file:Documentation/kbuild/modules.txt>.
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The module will be called ms02-nv.
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config MTD_DATAFLASH
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tristate "Support for AT45xxx DataFlash"
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depends on SPI_MASTER && EXPERIMENTAL
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help
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This enables access to AT45xxx DataFlash chips, using SPI.
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Sometimes DataFlash chips are packaged inside MMC-format
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cards; at this writing, the MMC stack won't handle those.
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config MTD_DATAFLASH_WRITE_VERIFY
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bool "Verify DataFlash page writes"
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depends on MTD_DATAFLASH
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help
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This adds an extra check when data is written to the flash.
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It may help if you are verifying chip setup (timings etc) on
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your board. There is a rare possibility that even though the
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device thinks the write was successful, a bit could have been
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flipped accidentally due to device wear or something else.
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config MTD_DATAFLASH_OTP
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bool "DataFlash OTP support (Security Register)"
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depends on MTD_DATAFLASH
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select HAVE_MTD_OTP
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help
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Newer DataFlash chips (revisions C and D) support 128 bytes of
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one-time-programmable (OTP) data. The first half may be written
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(once) with up to 64 bytes of data, such as a serial number or
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other key product data. The second half is programmed with a
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unique-to-each-chip bit pattern at the factory.
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config MTD_M25P80
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tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)"
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depends on SPI_MASTER && EXPERIMENTAL
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help
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This enables access to most modern SPI flash chips, used for
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program and data storage. Series supported include Atmel AT26DF,
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Spansion S25SL, SST 25VF, ST M25P, and Winbond W25X. Other chips
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are supported as well. See the driver source for the current list,
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or to add other chips.
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Note that the original DataFlash chips (AT45 series, not AT26DF),
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need an entirely different driver.
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Set up your spi devices with the right board-specific platform data,
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if you want to specify device partitioning or to use a device which
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doesn't support the JEDEC ID instruction.
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config M25PXX_USE_FAST_READ
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bool "Use FAST_READ OPCode allowing SPI CLK <= 50MHz"
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depends on MTD_M25P80
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default y
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help
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This option enables FAST_READ access supported by ST M25Pxx.
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config MTD_SST25L
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tristate "Support SST25L (non JEDEC) SPI Flash chips"
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depends on SPI_MASTER
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help
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This enables access to the non JEDEC SST25L SPI flash chips, used
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for program and data storage.
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Set up your spi devices with the right board-specific platform data,
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if you want to specify device partitioning.
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config MTD_SLRAM
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tristate "Uncached system RAM"
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help
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If your CPU cannot cache all of the physical memory in your machine,
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you can still use it for storage or swap by using this driver to
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present it to the system as a Memory Technology Device.
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config MTD_PHRAM
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tristate "Physical system RAM"
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help
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This is a re-implementation of the slram driver above.
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Use this driver to access physical memory that the kernel proper
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doesn't have access to, memory beyond the mem=xxx limit, nvram,
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memory on the video card, etc...
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config MTD_LART
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tristate "28F160xx flash driver for LART"
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depends on SA1100_LART
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help
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This enables the flash driver for LART. Please note that you do
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not need any mapping/chip driver for LART. This one does it all
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for you, so go disable all of those if you enabled some of them (:
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config MTD_MTDRAM
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tristate "Test driver using RAM"
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help
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This enables a test MTD device driver which uses vmalloc() to
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provide storage. You probably want to say 'N' unless you're
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testing stuff.
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config MTDRAM_TOTAL_SIZE
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int "MTDRAM device size in KiB"
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depends on MTD_MTDRAM
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default "4096"
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help
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This allows you to configure the total size of the MTD device
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emulated by the MTDRAM driver. If the MTDRAM driver is built
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as a module, it is also possible to specify this as a parameter when
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loading the module.
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config MTDRAM_ERASE_SIZE
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int "MTDRAM erase block size in KiB"
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depends on MTD_MTDRAM
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default "128"
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help
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This allows you to configure the size of the erase blocks in the
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device emulated by the MTDRAM driver. If the MTDRAM driver is built
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as a module, it is also possible to specify this as a parameter when
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loading the module.
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#If not a module (I don't want to test it as a module)
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config MTDRAM_ABS_POS
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hex "SRAM Hexadecimal Absolute position or 0"
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depends on MTD_MTDRAM=y
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default "0"
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help
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If you have system RAM accessible by the CPU but not used by Linux
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in normal operation, you can give the physical address at which the
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available RAM starts, and the MTDRAM driver will use it instead of
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allocating space from Linux's available memory. Otherwise, leave
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this set to zero. Most people will want to leave this as zero.
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config MTD_BLOCK2MTD
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tristate "MTD using block device"
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depends on BLOCK
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help
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This driver allows a block device to appear as an MTD. It would
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generally be used in the following cases:
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Using Compact Flash as an MTD, these usually present themselves to
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the system as an ATA drive.
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Testing MTD users (eg JFFS2) on large media and media that might
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be removed during a write (using the floppy drive).
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comment "Disk-On-Chip Device Drivers"
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config MTD_DOC2000
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tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
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select MTD_DOCPROBE
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select MTD_NAND_IDS
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---help---
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This provides an MTD device driver for the M-Systems DiskOnChip
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2000 and Millennium devices. Originally designed for the DiskOnChip
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2000, it also now includes support for the DiskOnChip Millennium.
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If you have problems with this driver and the DiskOnChip Millennium,
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you may wish to try the alternative Millennium driver below. To use
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the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
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in the <file:drivers/mtd/devices/docprobe.c> source code.
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If you use this device, you probably also want to enable the NFTL
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'NAND Flash Translation Layer' option below, which is used to
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emulate a block device by using a kind of file system on the flash
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chips.
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NOTE: This driver is deprecated and will probably be removed soon.
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Please try the new DiskOnChip driver under "NAND Flash Device
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Drivers".
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config MTD_DOC2001
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tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
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select MTD_DOCPROBE
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select MTD_NAND_IDS
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---help---
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This provides an alternative MTD device driver for the M-Systems
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DiskOnChip Millennium devices. Use this if you have problems with
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the combined DiskOnChip 2000 and Millennium driver above. To get
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the DiskOnChip probe code to load and use this driver instead of
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the other one, you will need to undefine DOC_SINGLE_DRIVER near
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the beginning of <file:drivers/mtd/devices/docprobe.c>.
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If you use this device, you probably also want to enable the NFTL
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'NAND Flash Translation Layer' option below, which is used to
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emulate a block device by using a kind of file system on the flash
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chips.
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NOTE: This driver is deprecated and will probably be removed soon.
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Please try the new DiskOnChip driver under "NAND Flash Device
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Drivers".
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config MTD_DOC2001PLUS
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tristate "M-Systems Disk-On-Chip Millennium Plus"
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select MTD_DOCPROBE
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select MTD_NAND_IDS
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---help---
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This provides an MTD device driver for the M-Systems DiskOnChip
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Millennium Plus devices.
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If you use this device, you probably also want to enable the INFTL
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'Inverse NAND Flash Translation Layer' option below, which is used
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to emulate a block device by using a kind of file system on the
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flash chips.
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NOTE: This driver will soon be replaced by the new DiskOnChip driver
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under "NAND Flash Device Drivers" (currently that driver does not
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support all Millennium Plus devices).
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config MTD_DOCG3
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tristate "M-Systems Disk-On-Chip G3"
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---help---
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This provides an MTD device driver for the M-Systems DiskOnChip
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G3 devices.
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The driver provides access to G3 DiskOnChip, distributed by
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M-Systems and now Sandisk. The support is very experimental,
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and doesn't give access to any write operations.
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config MTD_DOCPROBE
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tristate
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select MTD_DOCECC
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config MTD_DOCECC
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tristate
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config MTD_DOCPROBE_ADVANCED
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bool "Advanced detection options for DiskOnChip"
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depends on MTD_DOCPROBE
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help
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This option allows you to specify nonstandard address at which to
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probe for a DiskOnChip, or to change the detection options. You
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are unlikely to need any of this unless you are using LinuxBIOS.
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Say 'N'.
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config MTD_DOCPROBE_ADDRESS
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hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
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depends on MTD_DOCPROBE
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default "0x0"
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---help---
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By default, the probe for DiskOnChip devices will look for a
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DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
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This option allows you to specify a single address at which to probe
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for the device, which is useful if you have other devices in that
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range which get upset when they are probed.
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(Note that on PowerPC, the normal probe will only check at
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0xE4000000.)
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Normally, you should leave this set to zero, to allow the probe at
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the normal addresses.
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config MTD_DOCPROBE_HIGH
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bool "Probe high addresses"
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depends on MTD_DOCPROBE_ADVANCED
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help
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By default, the probe for DiskOnChip devices will look for a
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DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
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This option changes to make it probe between 0xFFFC8000 and
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0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
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useful to you. Say 'N'.
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config MTD_DOCPROBE_55AA
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bool "Probe for 0x55 0xAA BIOS Extension Signature"
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depends on MTD_DOCPROBE_ADVANCED
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help
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Check for the 0x55 0xAA signature of a DiskOnChip, and do not
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continue with probing if it is absent. The signature will always be
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present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
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Only if you have overwritten the first block of a DiskOnChip
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Millennium will it be absent. Enable this option if you are using
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LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
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you have managed to wipe the first block.
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endmenu
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