- 07 Nov, 2013 32 commits
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Prabhakar Kushwaha authored
as per controller description, "While programming a NAND flash, status read should never skipped. Because it may happen that a new command is issued to the NAND Flash, even when the device has not yet finished processing the previous request. This may result in unpredictable behaviour." IFC controller never polls for R/B signal after command send. It just return control to software. This behaviour may not occur with NAND flash access. because new commands are sent after polling R/B signal. But it may happen in scenario where GPCM-ASIC and NAND flash device are working simultaneously. Update the controller driver to take care of this requirement Signed-off-by:
Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by:
Brian Norris <computersforpeace@gmail.com>
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Prabhakar Kushwaha authored
Current IFC driver supports till 4K page size NAND flash. Add support of 8K Page size NAND flash - Add nand_ecclayout for 4 bit & 8 bit ecc - Defines constants - also fix ecc.strength for 8bit ecc of 8K page size NAND Signed-off-by:
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Wang Haitao authored
Hardware: CPU: XLP832,the 64-bit OS NOR Flash:S29GL128S 128M Software: Kernel:2.6.32.41 Filesystem:JFFS2 When writing files, errors appear: Write len 182 but return retlen 180 Write of 182 bytes at 0x072c815c failed. returned -5, retlen 180 Write len 186 but return retlen 184 Write of 186 bytes at 0x072caff4 failed. returned -5, retlen 184 These errors exist only in 64-bit systems,not in 32-bit systems. After analysis, we found that the left shift operation is wrong in map_word_load_partial. For instance: unsigned char buf[3] ={0x9e,0x3a,0xea}; map_bankwidth(map) is 4; for (i=0; i < 3; i++) { int bitpos; bitpos = (map_bankwidth(map)-1-i)*8; orig.x[0] &= ~(0xff << bitpos); orig.x[0] |= buf[i] << bitpos; } The value of orig.x[0] is expected to be 0x9e3aeaff, but in this situation(64-bit System) we'll get the wrong value of 0xffffffff9e3aeaff due to the 64-bit sign extension: buf[i] is defined as "unsigned char" and the left-shift operation will convert it to the type of "signed int", so when left-shift buf[i] by 24 bits, the final result will get the wrong value: 0xffffffff9e3aeaff. If the left-shift bits are less than 24, then sign extension will not occur. Whereas the bankwidth of the nor flash we used is 4, therefore this BUG emerges. Signed-off-by:Pang Xunlei <pang.xunlei@zte.com.cn> Signed-off-by:
Zhang Yi <zhang.yi20@zte.com.cn> Signed-off-by:
Lu Zhongjun <lu.zhongjun@zte.com.cn> Cc: <stable@vger.kernel.org> Signed-off-by:
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Ezequiel Garcia authored
This patch moves the char and block major number definitions to major.h to be with the rest of the major numbers. While doing this, include major.h in the files that need it. Signed-off-by:
Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by:
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Rafał Miłecki authored
A new type of partition with magic FCTY was found on Huawei E970: 46 43 54 59 4b 51 37 4e 41 42 31 38 41 32 39 30 |FCTYKQ7NAB18A290| Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Signed-off-by:
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Rafał Miłecki authored
Most of the bcm47xx devices use TRX format for storing kernel and some partition like Squashfs or JFFS2. This is pretty flexible solution, CFE (the bootloader) just writes (and later boots) TRX at some hardcoded place and paritions can vary in the size. However some devices don't use TRX format. Very recently we have discovered ZTE H218N that has kernel and rootfs partitions at some "random" places. This patch allows Linux find a rootfs partition after installing custom image with a CFE bootloader. Signed-off-by:
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Hauke Mehrtens authored
Handle return NULL in malloc. Signed-off-by:
Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by:
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Sachin Kamat authored
devm_kzalloc is device managed and simplifies the code. Signed-off-by:
Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by:
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Sachin Kamat authored
module_platform_driver simplifies the code by removing boiler plate. Signed-off-by:
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Sachin Kamat authored
module_platform_driver simplifies the code by removing boiler plate. Signed-off-by:
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Brian Norris authored
Some bright specification writers decided to write this in the ONFI spec (from ONFI 3.0, Section 3.1): "The number of blocks and number of pages per block is not required to be a power of two. In the case where one of these values is not a power of two, the corresponding address shall be rounded to an integral number of bits such that it addresses a range up to the subsequent power of two value. The host shall not access upper addresses in a range that is shown as not supported." This breaks every assumption MTD makes about NAND block/chip-size dimensions -- they *must* be a power of two! And of course, an enterprising manufacturer has made use of this lovely freedom. Exhibit A: Micron MT29F32G08CBADAWP "- Plane size: 2 planes x 1064 blocks per plane - Device size: 32Gb: 2128 blockss [sic]" This quickly hits a BUG() in nand_base.c, since the extra dimensions overflow so we think it's a second chip (on my single-chip setup): ONFI param page 0 valid ONFI flash detected NAND device: Manufacturer ID: 0x2c, Chip ID: 0x44 (Micron MT29F32G08CBADAWP), 4256MiB, page size: 8192, OOB size: 744 ------------[ cut here ]------------ kernel BUG at drivers/mtd/nand/nand_base.c:203! Internal error: Oops - BUG: 0 [#1] SMP ARM [... trim ...] [<c02cf3e4>] (nand_select_chip+0x18/0x2c) from [<c02d25c0>] (nand_do_read_ops+0x90/0x424) [<c02d25c0>] (nand_do_read_ops+0x90/0x424) from [<c02d2dd8>] (nand_read+0x54/0x78) [<c02d2dd8>] (nand_read+0x54/0x78) from [<c02ad2c8>] (mtd_read+0x84/0xbc) [<c02ad2c8>] (mtd_read+0x84/0xbc) from [<c02d4b28>] (scan_read.clone.4+0x4c/0x64) [<c02d4b28>] (scan_read.clone.4+0x4c/0x64) from [<c02d4c88>] (search_bbt+0x148/0x290) [<c02d4c88>] (search_bbt+0x148/0x290) from [<c02d4ea4>] (nand_scan_bbt+0xd4/0x5c0) [... trim ...] ---[ end trace 0c9363860d865ff2 ]--- So to fix this, just truncate these dimensions down to the greatest power-of-2 dimension that is less than or equal to the specified dimension. Signed-off-by: -
Ezequiel Garcia authored
This commit replaces the currently hardcoded buffer size, by a dynamic detection scheme. First a small 256 bytes buffer is allocated so the device can be detected (using READID and friends commands). After detection, this buffer is released and a new buffer is allocated to acommodate the page size plus out-of-band size. Signed-off-by:
Daniel Mack <zonque@gmail.com> Signed-off-by:
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Ezequiel Garcia authored
Instead of setting info->dma each time a command is prepared, we can move it after the DMA buffers are allocated. This is more clear and it's the proper place to enable this, given DMA cannot be turned on and off during runtime. Signed-off-by:
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Priyanka Jain authored
Micron N25Q512A is a spi flash memory with following features: -64MB size, 1.8V, Mulitple I/O, 4KB Sector erase memory. -Memory is organised as 1024(64KB) main sectors. -Each sector is divided into 256 pages. -Register set/Opcodes are similar to other N25Q family products. Signed-off-by:
Priyanka Jain <Priyanka.Jain@freescale.com> Acked-by:
Marek Vasut <marex@denx.de> Signed-off-by:
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Wei Yongjun authored
Use free_bch() instead of kfree() to free init_bch() allocated data. Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by:
Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by:
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Mike Dunn authored
The loop that polls the status register waiting for an operation to complete foolishly bases the timeout simply on the number of loop iterations that have ocurred. When I increased the processor clock speed, timeouts started to appear for long block erasure operations. This patch measures the timeout using jiffies. Signed-off-by:
Mike Dunn <mikedunn@newsguy.com> Signed-off-by:
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Sachin Kamat authored
dev_err is preferred to printk. Signed-off-by:
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Sachin Kamat authored
devm_kzalloc is device managed and makes code simpler. Signed-off-by:
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Sachin Kamat authored
Driver core will set the driver data to NULL upon detach or probe failure. Signed-off-by:
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Sachin Kamat authored
module_platform_driver removes boiler plate code and makes it simpler. Signed-off-by:
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Sachin Kamat authored
Driver core will set the driver data to NULL upon detach or probe failure. Signed-off-by:
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Sachin Kamat authored
devm_kzalloc is device managed and makes code simpler. Signed-off-by:
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Sachin Kamat authored
Driver core will set the driver data to NULL upon detach or probe failure. Signed-off-by:
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Ezequiel Garcia authored
Signed-off-by:
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Sachin Kamat authored
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by:
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Sachin Kamat authored
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by:
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Sachin Kamat authored
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by:
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Jingoo Han authored
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Signed-off-by:
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Jingoo Han authored
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
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Jingoo Han authored
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
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Jingoo Han authored
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
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Alexander Sverdlin authored
phram was 32-bit limited by design. Machines are growing up, but phram module is still useful. Update it. The patch is bigger than minimum, because simple_strtoul() is obsolete. Tested on MIPS64 and compile-tested for PPC (32 bit). Signed-off-by:
Alexander Sverdlin <alexander.sverdlin@nsn.com> Reviewed-by:
Joern Engel <joern@logfs.org> Signed-off-by:
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- 27 Oct, 2013 8 commits
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Sachin Kamat authored
__initdata should be placed between the variable name and equal sign for the variable to be placed in the intended section. Signed-off-by:
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Flavio Silveira authored
This flashchip is used in D-Link DIR-610 A1 router board and maybe several others, yet is not kernel upstream. So add support for it according to datasheet [0], making it easier to support other boards using this flashchip in the future. [0] http://www.esmt.com.tw/DB/manager/upload/F25L32PA.pdfSigned-off-by:
Flavio Silveira <fggs@terra.com.br> Signed-off-by:
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Jingoo Han authored
Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by:
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Huang Shijie authored
Current code sets the mtd->type with MTD_NANDFLASH for both SLC and MLC. So the jffs2 may supports the MLC nand, but in actually, the jffs2 should not support the MLC. This patch uses the nand_is_slc() to check the nand cell type, and set the mtd->type with the right nand type. After this patch, the jffs2 only supports the SLC nand. The side-effect of this patch: Before this patch, the ioctl(MEMGETINFO) can only return with the MTD_NANDFLASH; but after this patch, the ioctl(MEMGETINFO) will return with the MTD_NANDFLASH for SLC, and MTD_MLCNANDFLASH for MLC. So the user applictions(such as mtd-utils) should also changes a little for this. Signed-off-by:
Huang Shijie <b32955@freescale.com> Signed-off-by:
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Huang Shijie authored
We should not support the MLC nand for jffs2. So if the nand type is MLC, we quit immediatly. Signed-off-by:
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Huang Shijie authored
The current mtd_type_show() misses the MTD_MLCNANDFLASH case. This patch adds the case for it, and also updates the ABI. Signed-off-by:
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Huang Shijie authored
The helper is for user applications, and it is just a copy of the kernel helper: mtd_type_is_nand(); Signed-off-by:
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Huang Shijie authored
This helper detects that whether the mtd's type is nand type. Now, it's clear that the MTD_NANDFLASH stands for SLC nand only. So use the mtd_type_is_nand() to replace the old check method to do the nand type (include the SLC and MLC) check. Signed-off-by:
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