- remove mach/silicon.h and include omap?-silicon.h directly
- include mach/omap?-clock.h directly where needed
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Use the prefetch engine to improve NAND performance. The howto
is derived from the Kernel. Unlike the kernel we do not make
the access mode configurable.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- dev_ready is supposed to return whether the device is ready or
not, not to poll until the device is ready.
- dev_ready should return true for ready and false for not ready
- waitpin polarity is not needed (at least the kernel does not have it)
- wait_mon_mask must be 32bit.
The code was unused since no board specified a wait pin, so no breakage
included. This also removes the now unused timeout variable from
platformdata.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
commit 30de24d79fc6e659d0070f6e863ae0e53567ba0e param: add config to disable it
removes param support for xloader configurations. Set param eccmode calls
omap_gpmc_eccmode and so nand_scan_tail. So nand fails without param support
Call omap_gpmc_eccmode directly if CONFIG_PARAMETER is not enabled
to fix that.
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Change NAND_WRITE into MTD_WRITE.
Change "page_shift" references in the core, which are purely
NAND, into mtd->writesize which is MTD generic.
Rename all "info" (struct mtd_info) into "mtd".
Also provide a parameter to add_mtd_device() so that legacy
nand devices still appear as nand<N>.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The OMAP4 romcode expects some unusual ecc layout which we could
write but not read. This patch adds a function which uses the
manual mode to read a page written with this ecc layout.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We can't use the ECC_RESULTx_0 register set for manual mode which
we'll need in the next patch. So factor out an internal function
which makes the register set to use configurable.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- add missing '\n' at line ends
- fix wrong argument type warnings
- remove too noisy debug in omap_hwcontrol
- add function names to debug printfs
- add 0x prefixes to hex values
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The driver used to print an error when bch decoing failed, but
did not actually throw an error. Fix this.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Move omap_calculate_ecc outside omap_correct_bch. When implementing
the romcode bch read page we have to call omap_calculate_ecc with
different arguments than in the standard case.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We need the bch correct algorithm in the next patches, so
factor out a seperate function for this and also safe an
indention level.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To allow for some generic io accessors introduce io.h and use
this instead of asm/io.h throughout the tree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Now a 'devinfo gpmc_nand0' shows the current used eccmode
instead of <NULL>.
The function omap_gpmc_eccmode is now called by dev_set_param.
Signed-off-by: Juergen Kilb <J.Kilb@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
NAND_BUSWIDTH_16 should result in dev_width = 1 according to the kernel driver
omap_enable_hwecc: dev_width = (chip->options & NAND_BUSWIDTH_16) ? 1 : 0;
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The information from the probe function is useful for developers
only, so turn them into dev_dbg to safe binary space.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds BCH ecc support to the omap nand driver. The BCH
error correction allows for up to 8 bit error correction. It is
also needed for booting from nand on omap4.
This is based on code from Sukumar Ghorai <s-ghorai@ti.com>:
[PATCH] omap3: nand: bch ecc support added
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On omap we use different ecc modes for different purposes. The initial
boot code has to be written with hardware ecc whereas Linux usually uses
software ecc. To be able to write in both modes with a sinlge barebox
image introduce a eccmode device parameter.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This repairs a bug which came with patch "0cb00c1 omap nand: cleanup"
We first have to set ecc.layout before we can use it and should
do the nand_scan_tail after we set the ecc.mode.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Alexander Shiyan
Sascha Hauer
Jean-Christophe PLAGNIOL-VILLARD
Jan Weitzel
Alexander Aring
Robert Jarzmik
Juergen Kilb
Michael Grzeschik