When possible use DMA for reading from CFI flash, this provides upto 5x
improvement in read performance with high speed CFI compliant flashes
like HyperFlash.
Code will gracefully fallback to CPU copy when DMA is unavailable.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content. (both just wrap <asm-generic/errno.h>)
Replace all include directives for <asm/errno.h> with <linux/errno.h>.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
ff94bc40af "mtd, ubi, ubifs: resync with Linux-3.14"
introduced the writebufsize field in struct mtd_info, which
is not initialized in the cfi_flash driver, which leads in
not working ubi on cfi flashes. Fix it
Signed-off-by: Heiko Schocher <hs@denx.de>
Reported-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
This patch is essentially an update of u-boot MTD subsystem to
the state of Linux-3.7.1 with exclusion of some bits:
- the update is concentrated on NAND, no onenand or CFI/NOR/SPI
flashes interfaces are updated EXCEPT for API changes.
- new large NAND chips support is there, though some updates
have got in Linux-3.8.-rc1, (which will follow on top of this patch).
To produce this update I used tag v3.7.1 of linux-stable repository.
The update was made using application of relevant patches,
with changes relevant to U-Boot-only stuff sticked together
to keep bisectability. Then all changes were grouped together
to this patch.
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
[scottwood@freescale.com: some eccstrength and build fixes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
Fix:
cfi_mtd.c: In function 'cfi_mtd_init':
cfi_mtd.c:226:19: warning: variable 'mtd_list' set but not used [-Wunused-but-set-variable]
cfi_mtd.c: In function 'cfi_mtd_init':
cfi_mtd.c:225:6: warning: unused variable 'devices_found'
cfi_mtd.c: In function 'cfi_mtd_init':
cfi_mtd.c:226:19: warning: variable 'mtd_list' set but not used [-Wunused-but-set-variable]
[-Wunused-variable]
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Now that the defines are moved to header files we don't need this
conditional compilation any more. Remove it.
Signed-off-by: Stefan Roese <sr@denx.de>
eraseregions numblocks was sometimes one less than actual, possibly producing
erase regions with zero blocks. As MTD code touches eraseregions only if
numeraseregions is greater that zero, allocate eraseregions only for non
uniform erase size flash.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Stefan Roese <sr@denx.de>
a.k.a cfi_mtd.c does as cfi_flash.c does. This also prevents
the TQM834x build from doing a:
cfi_mtd.c:36: error: variably modified 'cfi_mtd_info' at file scope
cfi_mtd.c:37: error: variably modified 'cfi_mtd_names' at file scope
using gcc 4.4.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This patch brings the U-Boot MTD infrastructure in sync with the current
Linux MTD version (2.6.30-rc3). Biggest change is the 64bit device size
support and a resync of the mtdpart.c file which has seen multiple fixes
meanwhile.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Kyungmin Park <kmpark@infradead.org>
This patch adds concatenation support to the U-Boot MTD infrastructure.
By enabling CONFIG_MTD_CONCAT this MTD CFI wrapper will concatenate
all found NOR devices into one single MTD device. This can be used by
e.g by UBI to access a partition that spans over multiple NOR chips.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch now enabled this cfi-mtd wrapper to correctly detect and
erase the last sector in an NOR FLASH device.
Signed-off-by: Stefan Roese <sr@denx.de>
With this patch non-uniform NOR FLASH chips (chips with multiple erase
regions) can be exported via the cfi-mtd layer and therefor used by UBI.
We select the largest sector size as erasesize. The cfi driver will make
sure that the smaller sectors are handled correctly.
Signed-off-by: Stefan Roese <sr@denx.de>
On platforms with multiple NOR chips, currently only the first one
can be selected using the "ubi part" command. This patch fixes this
problem by using different names for the NOR "mtd devices".
It also changes the name of the NOR MTD device from "cfi-mtd" to
"norX" (X indexing the device numer) to better match the mtdparts
defaults.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
Add cfi-mtd driver, which exports CFI flash to MTD layer.
This allows CFI flash devices to be used from MTD layer.
Building of the new driver is controlled by CONFIG_FLASH_CFI_MTD
option. Initialization is done by calling cfi_mtd_init() from
flash_init().
Signed-off-by: Piotr Ziecik <kosmo@semihalf.com>
Signed-off-by: Stefan Roese <sr@denx.de>
