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path: root/drivers/mtd/onenand
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2007-07-10[MTD] [ONENAND] Make onenand_sim compile on non-ARM platforms.David Woodhouse
The whole point of a sim is that it should run almost anywhere. Gratuitously depending on '#define SZ_128K 131072' from an ARM-specific header isn't really a good idea. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30[MTD] OneNAND Simulator supportKyungmin Park
This simulate various OneNAND flash chips for the MTD onenand layer. It's simple implementation, only basic operations. It don't support the recent changes in NANDSIM such as lazy block allocation, bitflip, and so on. Note: This passed nand-tests. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-30[MTD] [OneNAND] 2X program supportKyungmin Park
The 2X Program is an extension of Program Operation. Since the device is equipped with two DataRAMs, and two-plane NAND Flash memory array, these two component enables simultaneous program of 4KiB. Plane1 has only even blocks such as block0, block2, block4 while Plane2 has only odd blocks such as block1, block3, block5. So MTD regards it as 4KiB page size and 256KiB block size Now the following chips support it. (KFXXX16Q2M) Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M, Mux: KFM2G16Q2M, KFN4G16Q2M, And more recent chips Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-05-09Fix occurrences of "the the "Michael Opdenacker
Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-04-25[MTD] [OneNAND] Exit loop only when column start with 0Adrian Hunter
The JFFS2 requests OOB function from column 0. But the oobtest in nand-tests doesn't. So we only exit loop only when column start with 0. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-25[MTD] [OneNAND] Fix access the past of the real oobfree arrayKyungmin Park
Here it's not the case: all the entries are occupied by OOB chunks. Therefore, once we get into a loop like for (free = this->ecclayout->oobfree; free->length; ++free) { } we might end up scanning past the real oobfree array. Probably the best way out, as the same thing might happen for common NAND as well, is to check index against MTD_MAX_OOBFREE_ENTRIES. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-25[MTD] [OneNAND] Update Samsung OneNAND official URLKyungmin Park
Update Samsung OneNAND official URL. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-19Use menuconfig objects: MTDJan Engelhardt
Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-09[MTD] [OneNAND] Classify the page data and oob bufferKyungmin Park
Classify the page data and oob buffer and it prevents the memory fragementation (writesize + oobsize) Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-09[MTD] [OneNAND] Exit the loop when transferring/filling of the oob is finishedKyungmin Park
When transferring/filling of the oob is finished in OOB_AUTO, we exit the loop Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-09[MTD] [OneNAND] add Nokia Copyright and a creditAdrian Hunter
add Nokia Copyright and a credit Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-09[MTD] [OneNAND] Fix typo & wrong commentsKyungmin Park
Fix typo & wrong comments Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-09[MTD] [OneNAND] Use oob buffer instead of main one in oob functionsKyungmin Park
In oob functions, it is used main buffer instead of oob one. So fix it. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-03-08[MTD] [NAND] make oobavail publicVitaly Wool
During the MTD rework the oobavail parameter of mtd_info structure has become private. This is not quite correct in terms of integrity and logic. If we have means to write to OOB area, then we'd like to know upfront how many bytes out of OOB are spare per page to be able to adapt to specific cases. The patch inlined adds the public oobavail parameter. Signed-off-by: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-02-18[MTD] [ONENAND] onenand_base warning fixAndrew Morton
drivers/mtd/onenand/onenand_base.c: In function 'onenand_bbt_read_oob': drivers/mtd/onenand/onenand_base.c:1033: warning: format '%i' expects type 'int', but argument 3 has type 'size_t' Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-02-09[MTD] remove unused ecctype,eccsize fields from struct mtd_infoArtem Bityutskiy
Remove unused and broken mtd->ecctype and mtd->eccsize fields from struct mtd_info. Do not remove them from userspace API data structures (don't want to breake userspace) but mark them as obsolete by a comment. Any userspace program which uses them should be half-broken anyway, so this is more about saving data structure size. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-02-09[MTD] OneNAND: Invalidate bufferRAM after eraseAdrian Hunter
OneNAND has internal bufferRAMs. The driver keeps track of what is in the bufferRAM to save having to load from the NAND core. After an erase operation, the driver must mark bufferRAM invalid if it refers to the erased block. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-02-09[MTD] OneNAND: Select correct chip's bufferRAM for DDPAdrian Hunter
OneNAND double-density package (DDP) has two chips, each with their own bufferRAM. The driver will skip loading data from the NAND core if the data can be found in a bufferRAM, however in that case, the correct chip's bufferRAM must be selected before reading from bufferRAM. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-07[MTD] OneNAND: Error message printing and bad block scan errosKyungmin Park
Provide the bad block scan with its own read function so that important error messages that are not from the the bad block scan, can always be printed. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-07[MTD] OneNAND: Subpage write returned incorrect length writtenAdrian Hunter
When a write is done, the length written is returned. When a single subpage is written the length returned should be the subpage size, however the page size was being returned. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-06[MTD] OneNAND: Do not allow oob write past end of pageAdrian Hunter
OneNAND can write oob to successive pages, but NAND does not do that. For compatibility, disallow OneNAND from writing past the end of the page. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-02[MTD] OneNAND: Fix typo and remove unnecessary goto statementKyungmin Park
In previos patch, there's typo so fix it Remove unnecessary goto statement Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-02[MTD] OneNAND: Reduce internal BufferRAM operationsKyungmin Park
It use blockpage instead of a pair (block, page). It can also cover a small chunk access. 0x00, 0x20, 0x40 and so on. And in JFFS2 behavior, sometimes it reads two pages alternatively. e.g., It first reads A page, B page and A page. So we check another bufferram to find requested page. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-02[MTD] OneNAND: Remove line of code that was meant to be deleted in OOB_AUTOKyungmin Park
- Iterations of the patch to add oob auto-placement support to OneNAND left a line of code that was meant to have been deleted. - read mtd->oobsize in onenand_transfer_auto_oob to optimized memcpy Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-02-01[MTD] OneNAND: Add support for auto-placement of out-of-band dataAdrian Hunter
Enable the use of oob operation mode MTD_OOB_AUTO with OneNAND. Note that MTD_OOB_RAW is still not supported. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-31[MTD] OneNAND: Remove unused fieldsKyungmin Park
- Remove unused fields - Fix typo Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-25[MTD] OneNAND: Amend write-verify to compare to original bufferAdrian Hunter
When write-verify is enabled (CONFIG_MTD_ONENAND_VERIFY_WRITE), the data written is read back and compared. The comparison was being made between dataRAM buffers, but this does not verify that the data made it to the dataRAM correctly in the first place. This patch amends write-verify to compare back to the original buffer. It also now verifies sub-page writes. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-22[MTD] OneNAND: Check first or second pages for bad block informationAdrian Hunter
OneNAND records bad block information in the out-of-band area of either the first or second page of a block. Due to a logic error, only the first page was being checked. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-22[MTD] OneNAND: Free the bad block table when the device is releasedAdrian Hunter
OneNAND does 2 memory allocations for bad block information. Only one of them was being freed. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-18[MTD] OneNAND: Update copyrights and code cleanupKyungmin Park
Update copyrights and code cleanup Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-18[MTD] OneNAND: Reduce Double Density Package (DDP) operationsKyungmin Park
- DDP code clean-up - Reduce block & bufferram operations in DDP Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-18[MTD] OneNAND: Return an error if a read timeout occursAdrian Hunter
If OneNAND is operating within specification, all operations should easily be completed within the 20 millisecond timeout. This patch faithlessly adds a check for the timeout and returns an error in that case. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-18[MTD] OneNAND: Fix unlock all status errorKyungmin Park
We have to set ONENAND_REG_START_BLOCK_ADDRESS to avoid status error Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: Handle DDP chip boundary during read-while-loadAdrian Hunter
The read-while-load method of reading from OneNAND needs to allow for the change of bufferRAM address at the boundary between the two chips in a double density (DDP) device. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: return ecc error code only when 2-bit ecc occursKyungmin Park
we don't need to return ecc error when 1-bit ecc. We only return error code when 2-bit ecc error Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: Implement read-while-loadAdrian Hunter
Read-while-load enables higher performance read operations. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: fix onenand_wait bug in read ecc errorKyungmin Park
Even though there is ECC error. OneNAND driver updates the buffram as valid Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: release CPU in cyclesArtem Bityutskiy
This patch teaches OneNAND to release processor in read/write/erase cycles and let other processes proceed. Also, remove buggi touch watchdog call which only hides the problem instead of solving it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: add subpage write supportKyungmin Park
OneNAND supports up to 4 writes at one NAND page. Add support of this feature. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2007-01-10[MTD] OneNAND: fix onenand_wait bugKyungmin Park
Fix onenand_wait error reporting Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2006-12-11[MTD] OneNAND: fix oob handling in recent oob patchKyungmin Park
There are missing place in recent MTD oob patch http://git.infradead.org/?p=mtd-2.6.git;a=commitdiff;h=7014568bad55c20b7ee4f439d78c9e875912d51f Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-30[MTD] Remove trailing whitespaceDavid Woodhouse
The newly-added cafe_ecc.c had a lot of it because of the way the lookup table was auto-generated; clean up the other files too while we're at it. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-29Merge git://git.infradead.org/~kmpark/onenand-mtd-2.6David Woodhouse
2006-11-28[MTD] replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Yan Burman <yan_952@hotmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-11-16[MTD] OneNAND: Single bit error detectionKyungmin Park
Idea from Jarkko Lavinen Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2006-11-16[MTD] OneNAND: lock supportKyungmin Park
Now you can use mtd lock inferface on OneNAND The idea is from Nemakal, Vijaya, thanks Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2006-11-16MTD: OneNAND: interrupt based wait supportKyungmin Park
We can use the two methods to wait. 1. polling: read interrupt status register 2. interrupt: use kernel ineterrupt mechanism To use interrupt method, you first connect onenand interrupt pin to your platform and configure interrupt properly Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
2006-10-03Fix several typos in drivers/Matt LaPlante
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-09-26[MTD ONENAND] Check OneNAND lock scheme & all block unlock command supportKyungmin Park
OneNAND lock scheme depends on density and process of chip. Some OneNAND chips support all block unlock Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-26[MTD ONENAND] Remove unused MTD_ONENAND_SYNC_READ configurationKyungmin Park
Now the bootloader configures the OneNAND sync. burst mode. So we don't access Sync. burst mode related registers in kernel. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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