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* dm: usb: Add a generic descriptor structSimon Glass2015-04-18-0/+5
| | | | | | | | This is useful for creating lists of descriptors, and is better than using void * for this purpose. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: Move struct usb_string to a common placeSimon Glass2015-04-18-13/+13
| | | | | | | | This is needed for sandbox USB device emulation, so move it to a place where it can be found by things other than gadgets. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* usb: modify usb_gadget_handle_interrupts to take controller indexKishon Vijay Abraham I2015-04-14-1/+1
| | | | | | | | | | | | | | Since we support multiple dwc3 controllers to be existent at the same time, in order to handle the interrupts of a particular dwc3 controller usb_gadget_handle_interrutps should take controller index as an argument. Hence the API of usb_gadget_handle_interrupts is modified to take controller index as an argument and made the corresponding changes to all the usb_gadget_handle_interrupts calls. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* usb: dwc3: dwc3-omap: make dwc3-omap build in ubootKishon Vijay Abraham I2015-04-14-0/+19
| | | | | | | | | | | *) Changed the included header files to that used in u-boot. *) Removed extcon_* APIs *) Removed regulator_* APIs *) Fixed other misc warnings *) Added dwc3-omap.h to include the definitions of UTMI modes. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* include: usb: composite: add USB_GADGET_DELAYED_STATUS to avoid compilation ↵Kishon Vijay Abraham I2015-04-14-0/+9
| | | | | | | | | | | | | | | | | | | | | error Added USB_GADGET_DELAYED_STATUS to avoid the following compilation error. error: ‘USB_GADGET_DELAYED_STATUS’ undeclared (first use in this function) while compiling dwc3/ep0.c While this is been added only to avoid compilation error, the complete fix should be something like the one added in linux kernel. The complete fix will be ported once we have the composite driver in u-boot look similar to the one in linux kernel. commit 1b9ba000177ee47bcc5b44c7c34e48e735f5f9b1 Author: Roger Quadros <roger.quadros@nokia.com> Date: Mon May 9 13:08:06 2011 +0300 usb: gadget: composite: Allow function drivers to pause control transfers Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* usb: dwc3: gadget: make dwc3 gadget build in ubootKishon Vijay Abraham I2015-04-14-0/+40
| | | | | | | | | | | | | Did a bunch of things to get dwc3/gadget.c compile in u-boot without build errors and warnings *) Changed the included header files to that used in u-boot. *) Used dma_alloc_coherent and dma_free_coherent APIs of u-boot *) removed sg support *) remove jiffies and used a simple while loop *) removed irq support and added a function to call these interrupt handler. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* usb: dwc3: fix dwc3 header filesKishon Vijay Abraham I2015-04-14-0/+20
| | | | | | | | | Changed the header files included in core.h and io.h to the u-boot header files so that these files can be included in other dwc3 source files and be compiled in uboot. Also added otg.h which has the defines for dr_mode. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* include: usb: modify gadget.h to include udc supportKishon Vijay Abraham I2015-04-14-0/+43
| | | | | | | | Made changes in gadget.h that is required after adding udc-core.c except changes that might break other platforms. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
* nand: Remove CONFIG_MTD_NAND_VERIFY_WRITEPeter Tyser2015-03-30-5/+0
| | | | | | | | | The CONFIG_MTD_NAND_VERIFY_WRITE has been removed from Linux for some time and a more generic method of NAND verification now exists in U-Boot. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
* use ASM_NL instead of '; ' for assembler new line character in the macroChen Gang2015-03-05-4/+9
| | | | | | | | | | | | | | | | | For some assemblers, they use another character as newline in a macro (e.g. arc uses '`'), so for generic assembly code, need use ASM_NL (a macro) instead of ';' for it. Basically this is the same patch as applied to Linux kernel - http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/include/linux/linkage.h?id=9df62f054406992ce41ec4558fca6a0fa56fffeb but modified a bit to fit in U-Boot. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@ti.com>
* Add linux/compiler-gcc5.h to fix builds with gcc5Hans de Goede2015-02-11-0/+65
| | | | | | | | | | | | Add linux/compiler-gcc5/h from the kernel sources at: commit 5631b8fba640a4ab2f8a954f63a603fa34eda96b Author: Steven Noonan <steven@uplinklabs.net> Date: Sat Oct 25 15:09:42 2014 -0700 compiler/gcc4+: Remove inaccurate comment about 'asm goto' miscompiles Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* ubifs: Import atomic_long operations from LinuxAnton Habegger2015-01-28-1/+0
| | | | | | | | | | This commit is a preperation for a subsequent UBIFS commit which needs atomic_long operations. Therefor "include/asm-generic/atomic-long.h" is imported from 1860e37 Linux 3.15 Signed-off-by: Anton Habegger <anton.habegger@gmail.com>
* mtd: OMAP: Enable GPMC prefetch modeDaniel Mack2015-01-13-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | Enable GPMC's prefetch feature for NAND access. This speeds up NAND read access a lot by pre-fetching contents in the background and reading them through the FIFO address. The current implementation has two limitations: a) it only works in 8-bit mode b) it only supports read access Both is easily fixable by someone who has hardware to implement it. Note that U-Boot code uses non word-aligned buffers to read data into, and request read lengths that are not multiples of 4, so both partial buffers (head and tail) have to be addressed. Tested on AM335x hardware. Tested-by: Guido Martínez <guido@vanguardiasur.com.ar> Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar> Signed-off-by: Daniel Mack <zonque@gmail.com> [trini: Make apply again, use 'cs' fix pointed out by Guido] Signed-off-by: Tom Rini <trini@ti.com>
* x86: move arch-specific asmlinkage to <asm/linkage.h>Masahiro Yamada2014-12-15-0/+2
| | | | | | | | | | | | | | | | | | Commit 65dd74a674d6 (x86: ivybridge: Implement SDRAM init) introduced x86-specific asmlinkage into arch/x86/include/asm/config.h. Commit ed0a2fbf14f7 (x86: Add a definition of asmlinkage) added the same macro define again, this time, into include/common.h. (Please do not add arch-specific stuff to include/common.h any more; it is already too cluttered.) The generic asmlinkage is defined in <linux/linkage.h>. If you want to override it with an arch-specific one, the best way is to add it to <asm/linkage.h> like Linux Kernel. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* lib: string: move strlcpy() to a common placeMasahiro Yamada2014-12-11-0/+3
| | | | | | | | | Move strlcpy() definition from drivers/usb/gadget/ether.c to lib/string.c because it is a very useful function. Let's add the prototype to include/linux/string.h too. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-tiTom Rini2014-12-08-0/+4
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| * arm: omap: add support for am57xx devicesFelipe Balbi2014-12-04-0/+4
| | | | | | | | | | | | | | | | just add a few ifdefs around because this device is very similar to dra7xxx. Signed-off-by: Felipe Balbi <balbi@ti.com> Reviewed-by: Tom Rini <trini@ti.com>
* | linux/compat.h: remove redundant macro definesMasahiro Yamada2014-12-08-4/+0
|/ | | | | | | __user and __iomem are defined in include/linux/compiler.h. MAX_ERRNO is defined in include/linux/err.h. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Fix SIZE_MAX compiler warning when using stdint.hSimon Glass2014-11-25-0/+2
| | | | | | | This new symbol may be defined by the compiler. If it is, avoid a compiler warning when USE_STDINT is defined. Signed-off-by: Simon Glass <sjg@chromium.org>
* linux/kernel.h: sync min, max, min3, max3 macros with LinuxMasahiro Yamada2014-11-23-13/+4
| | | | | | | | | | | | | | | | | | | | U-Boot has never cared about the type when we get max/min of two values, but Linux Kernel does. This commit gets min, max, min3, max3 macros synced with the kernel introducing type checks. Many of references of those macros must be fixed to suppress warnings. We have two options: - Use min, max, min3, max3 only when the arguments have the same type (or add casts to the arguments) - Use min_t/max_t instead with the appropriate type for the first argument Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Pavel Machek <pavel@denx.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com> Tested-by: Lukasz Majewski <l.majewski@samsung.com> [trini: Fixup arch/blackfin/lib/string.c] Signed-off-by: Tom Rini <trini@ti.com>
* linux/kernel.h: add typechecking to roundup macroMasahiro Yamada2014-11-20-2/+7
| | | | | | | | | This commit replaces roundup macro with the one from Linux Kernel. DEFINE_ALIGN_BUFFER must be fixed because typechecking can not be used in this context. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* linux/kernel.h: import more macrosMasahiro Yamada2014-11-20-0/+92
| | | | | | | These macros seem to be useful for U-Boot too (or at least harmless). Imported from Linux 3.18-rc2. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* include: move various macros to include/linux/kernel.hMasahiro Yamada2014-11-20-54/+157
| | | | | | | | | | | | | | | | | | | | | | | U-Boot has imported various utility macros from Linux scattering them to various places without consistency. In include/common.h are min, max, min3, max3, ARRAY_SIZE, ALIGN, container_of, DIV_ROUND_UP, etc. In include/linux/compat.h are min_t, max_t, round_up, round_down, etc. We also have duplicated defines of min_t in some *.c files. Moreover, we are suffering from too cluttered include/common.h. This commit moves various macros that originate in include/linux/kernel.h of Linux to their original position. Note: This commit simply moves the macros; the macros roundup, min, max, min2, max3, ARRAY_SIZE are different from those of Linux at this point. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-11-10-0/+388
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| * arm: debug: replace license blocks with SPDXMasahiro Yamada2014-10-26-3/+2
| | | | | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| * arm: debug: import debug files from Linux 3.16Masahiro Yamada2014-10-26-0/+389
| | | | | | | | | | | | | | | | | | | | | | | | | | U-Boot does not have arch/arm/kernel, include/uapi directories, This commit copies files as follows: Location in Linux -> Location in U-Boot arch/arm/kernel/debug.S -> arch/arm/lib/debug.S arch/arm/include/debug/8250.S -> arch/arm/include/debug/8250.S include/uapi/linux/serial_reg.h -> include/linux/serial_reg.h Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | Provide option to avoid defining a custom version of uintptr_t.Gabe Black2014-10-27-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a definition in stdint.h (provided by gcc) which will be more correct if available. Define CONFIG_USE_STDINT to use this feature, or USE_STDINT=1 on the 'make' commmand. This adjusts the settings for x86 and sandbox, with both have 64-bit options. Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Bill Richardson <wfrichar@google.com> Rewritten to be an option, since stdint.h is often available only in glibc. Changed to preserve a clear boundary between stdint and non-stdint Signed-off-by: Simon Glass <sjg@chromium.org>
* | Merge branch 'master' of git://git.denx.de/u-boot-tiTom Rini2014-10-27-1/+7
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| * | keystone: usb: add support of usb xhciWingMan Kwok2014-10-23-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support of usb xhci. xHCI controls all USB speeds of the Host mode, that is, the SS through the SS PHY, as well as the HS, FS, and LS through the USB2 PHY. xHCI replaces and supersedes all previous host HCIs (HS-only EHCI, FS/LS OHCI and UHCI), and is therefore not backwards compatible with any of them. The USB3SS’s USB Controller is fully compliant with xHC. Acked-by: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: WingMan Kwok <w-kwok2@ti.com> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
* | | Merge branch 'master' of git://git.denx.de/u-boot-usbTom Rini2014-10-26-0/+2
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| * | | musb: fix warning in include/linux/usb/musb.hIgor Grinberg2014-10-23-0/+2
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following build warning by including linux/compat.h: include/linux/usb/musb.h:110: warning: 'struct device' declared inside parameter list include/linux/usb/musb.h:110: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
* | | string.h: add missing prototypesJeroen Hofstee2014-10-25-0/+7
| |/ |/| | | | | Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* | arm: mvebu: Add common mbus functions to use on Marvell SoCsStefan Roese2014-10-23-0/+73
|/ | | | | | | | | | These mbus functions are ported from Barebox. The Barebox version is ported from Linux. These functions will be first used by the upcoming Armada XP support. Later other Marvell SoC's will be adopted to use these functions as well (Kirkwood, Orion). Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Luka Perkov <luka@openwrt.org>
* compiler_gcc: prevent redefining attributesJeroen Hofstee2014-09-24-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The libc headers on FreeBSD and likely related projects as well contain an header file, cdefs.h which provides similiar functionality as linux/compiler.h. It provides compiler independent defines like __weak __packed, to allow compiling with multiple compilers which might have a different syntax for such extension. Since that header file is included in multiple standard headers, like stddef.h and stdarg.h, multiple definitions of those defines will be present if both are included. When compiling u-boot the compiler will warn about it hundreds of times since e.g. common.h will include both files indirectly. commit 7ea50d52849fe8ffa5b5b74c979b60b1045d6fc9 "compiler_gcc: do not redefine __gnu_attributes" prevented such redefinitions, but this was undone by commit fb8ffd7cfc68b3dc44e182356a207d784cb30b34 "compiler*.h: sync include/linux/compiler*.h with Linux 3.16". Add the checks back where necessary to prevent such warnings. As the original patch this checkpatch warning is ignored: "WARNING: Adding new packed members is to be done with care" Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl> Acked-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* compiler*.h: sync include/linux/compiler*.h with Linux 3.16Masahiro Yamada2014-09-16-44/+236
| | | | | | | | Copy them from Linux v3.16 tag. My main motivation of this commit is to add compiler-clang.h. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
* kbuild: force to define __UBOOT__ in all the C sourcesMasahiro Yamada2014-09-16-5/+0
| | | | | | | | | | | | | | | | | | | | | | | U-Boot has imported various source files from other projects, mostly Linux. Something like #ifdef __UBOOT__ [ modification for U-Boot ] #else [ original code ] #endif is an often used strategy for clarification of adjusted parts, that is, easier re-sync in future. Instead of defining __UBOOT__ in each source file, passing it from the top Makefile would be easier. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
* clang: workaround for generated constantsJeroen Hofstee2014-09-09-3/+3
| | | | | | | | | | KBuild abuses the asm statement to write to a file and clang chokes about these invalid asm statements. Hack it even more by fooling this is actual valid asm code. cc: Masahiro Yamada <yamada.m@jp.panasonic.com> cc: Tom Rini <trini@ti.com> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* mtd,ubi,ubifs: sync with linux v3.15Heiko Schocher2014-08-25-19/+110
| | | | | | | | | | | | | | snyc with linux v3.15: commit 1860e379875dfe7271c649058aeddffe5afd9d0d Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Jun 8 11:19:54 2014 -0700 Linux 3.15 Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* mtd, ubi, ubifs: update for the sync with linux v3.14Heiko Schocher2014-08-25-0/+1
| | | | | | | | | | | | | while playing with the new mtd/ubi/ubifs sync, found some small updates for it: - add del_mtd_partition() to include/linux/mtd/mtd - mtd: add a debug_printf - remove some not used functions Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* mtd, ubi, ubifs: resync with Linux-3.14Heiko Schocher2014-08-25-257/+728
| | | | | | | | | | | | | | | | | | | | resync ubi subsystem with linux: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 A nice side effect of this, is we introduce UBI Fastmap support to U-Boot. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Rini <trini@ti.com> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Joerg Krause <jkrause@posteo.de>
* lib, linux: move linux specific defines to linux/compat.hHeiko Schocher2014-08-25-10/+325
| | | | | | | | | | | | | | | | - move linux specific defines from usb and video code into linux/compat.h - move common linux specific defines from include/ubi_uboot.h to linux/compat.h - add for new mtd/ubi/ubifs sync new needed linux specific defines to linux/compat.h Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Anatolij Gustschin <agust@denx.de> [trini: Add spin_lock_irqsave/spin_unlock_irqrestore dummies from usb/lin_gadet_compat.h] Signed-off-by: Tom Rini <trini@ti.com>
* linux include: add ERR_CASTHeiko Schocher2014-08-25-4/+13
| | | | | | add missing ERR_CAST to linux/err.h as it is needed for ubi/ubifs support Signed-off-by: Heiko Schocher <hs@denx.de>
* lib, list_sort: add list_sort from linux 3.14Heiko Schocher2014-08-25-0/+11
| | | | | | | | | | | | | | | | | | | | | | | from linux 3.14: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 Needed for the MTD/UBI/UBIFS resync Just copied the files from Linux, and added in the c-file the "#define __UBOOT__" for adding U-Boot special code. In this case we use this just for adding including U-Boot headers. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* lib, rbtree: resync with Linux-3.14Heiko Schocher2014-08-25-98/+269
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | resync with linux: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 Needed for the MTD/UBI/UBIFS resync Just copied the files from Linux, changed the license file header, and add in the c-file: +#define __UBOOT__ #include <linux/rbtree_augmented.h> +#ifndef __UBOOT__ #include <linux/export.h> +#else +#include <ubi_uboot.h> +#endif so, it compiles for U-Boot. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* kconfig: import Kconfig files from Linux 3.16-rc7Masahiro Yamada2014-07-30-0/+46
| | | | | | | | | | Import - scripts/kconfig/* - include/linux/kconfig.h from Linux 3.16-rc7. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* qe: move immap_qe.h from arch directory into common directoryZhao Qiang2014-07-22-0/+582
| | | | | | | | ls1021 is arm-core and supports qe too. Move immap_qe.h into common directory for both arm and powerpc. Signed-off-by: Zhao Qiang <B45475@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* linux/compat.h: port lower_32_bits and upper_32_bits from LinuxLijun Pan2014-07-22-0/+19
| | | | | | | | | | | | | | [backport from linux commit 204b885e and 218e180e7] 64 bit processors are becomming more and more popular. lower_32_bits and upper_32_bits save our labor doing shifts/manipulations like (u32)(n) and (u32)((n) >> 32). They are good helpers in both little and big endian cases. Port these two functions here from Linux:include/linux/kernel.h, cater the comment message to little/big endian cases. Later on, developers could include linux/compat.h if they want to use these two functions. Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
* mtd: nand: omap: add support for BCH16_ECC - NAND driver updatespekon gupta2014-06-06-0/+8
| | | | | | | | | | | | | | | | | | This patch add support for BCH16_ECC to omap_gpmc driver. *need to BCH16 ECC scheme* With newer SLC Flash technologies and MLC NAND, and large densities, pagesizes Flash devices have become more suspectible to bit-flips. Thus stronger ECC schemes are required for protecting the data. But stronger ECC schemes have come with larger-sized ECC syndromes which require more space in OOB/Spare. This puts constrains like; (a) BCH16_ECC can correct 16 bit-flips per 512Bytes of data. (b) BCH16_ECC generates 26-bytes of ECC syndrome / 512B. Due to (b) this scheme can only be used with NAND devices which have enough OOB to satisfy following equation: OOBsize per page >= 26 * (page-size / 512) Signed-off-by: Pekon Gupta <pekon@ti.com>
* mtd: nand: omap_gpmc: use macro for register definitionspekon gupta2014-06-06-1/+2
| | | | | | GPMC can support simultaneous processing of 8 512Byte data chunks, in parallel Signed-off-by: Pekon Gupta <pekon@ti.com>
* mtd: nand: fix GET/SET_FEATURES address on 16-bit devicesDavid Mosberger2014-06-06-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | As per following Sections in ONFI Spec, GET_FEATURES and SET_FEATURES also need byte-addressing on 16-bit devices. *Section: Target Initialization" "The Read ID and Read Parameter Page commands only use the lower 8-bits of the data bus. The host shall not issue commands that use a word data width on x16 devices until the host determines the device supports a 16-bit data bus width in the parameter page." *Section: Bus Width Requirements* "When the host supports a 16-bit bus width, only data is transferred at the 16-bit width. All address and command line transfers shall use only the lower 8-bits of the data bus. During command transfers, the host may place any value on the upper 8-bits of the data bus. During address transfers, the host shall set the upper 8-bits of the data bus to 00h." So porting following commit from linux kernel commit e34fcb07a6d57411de6e15a47724fbe92c5caa42 Author: David Mosberger <davidm@egauge.net> (preserving authorship) mtd: nand: fix GET/SET_FEATURES address on 16-bit devices Signed-off-by: Pekon Gupta <pekon@ti.com>
generated by cgit v1.1 at 2024-11-08 08:51:39 +0000