The i.MX6 uses the same GPMI NAND controller as i.MX23/28 do. This adds
i.MX6 support to the driver.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The convenience wrapper also contains the bch resources to
get rid of the hardcoded base in the driver in the next step.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This define allows to overwrite DMA_PIO_WORDS with an architecture
specific value. Since this is unused and not clean anyway remove
it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
As the apbh dma engine is also found on i.MX6 move the header file
out of MXS specific directories.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Currently the apbh driver uses a hardcoded base (MXS_APBH_BASE).
As a first step to clean this up add a private data struct
which is initialized during startup.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
MXS specific devices have some common infrastructure in the kernel
known as STMP devices. We have the same in barebox, but with a
mxs_ prefix instead of a stmp_ prefix. As some STMP devices are
also found on i.MX6 move the common infrastructure out of MXS
specific files and use the stmp_ prefix.
This is done in preparation for i.MX6 NAND support.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This updates the NAND stuff to Linux-3.11-rc1. It is synchronized
as best as we can get:
- locks removed
- The splitting in different files we had to better support different
features has been dropped. Instead this is now done mostly with the
use of __maybe_unused
Some barebox adjustments are forward ported, like:
- Allow partial page writes
- Optionally allow to erase bad blocks
- check for all_ff before writing a page
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This introduces the ecc stength fields in the structures and fills
them in, but leaves them unused right now.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There is the same function name in the Kernel but with different
semantics. Rename to avoid naming conflicts when we update the
mtd support from the kernel.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is based on Linux:
commit e2414f4c20bd4dc62186fbfd7bdec50bce6d2ead
Author: Brian Norris <computersforpeace@gmail.com>
Date: Mon Feb 6 13:44:00 2012 -0800
Currently, the flash-based BBT implementation writes bad block data only
to its flash-based table and not to the OOB marker area. Then, as new bad
blocks are marked over time, the OOB markers become incomplete and the
flash-based table becomes the only source of current bad block
information. This becomes an obvious problem when, for example:
* code accessing the flash cannot read the flash-based BBT format
* BBT is corrupted and the flash must be rescanned for bad
blocks; we want to remember bad blocks that were marked from Linux
So to keep the bad block markers in sync with the flash-based BBT, this
patch changes the default so that we write bad block markers to the proper
OOB area on each block in addition to flash-based BBT. Comments are
updated, expanded, and/or relocated as necessary.
The new flash-based BBT procedure for marking bad blocks:
(1) erase the affected block, to allow OOB marker to be written cleanly
(2) update in-memory BBT
(3) write bad block marker to OOB area of affected block
(4) update flash-based BBT
Note that we retain the first error encountered in (3) or (4), finish the
procedures, and dump the error in the end.
This should handle power cuts gracefully enough. (1) and (2) are mostly
harmless (note that (1) will not erase an already-recognized bad block).
The OOB and BBT may be "out of sync" if we experience power loss bewteen
(3) and (4), but we can reasonably expect that on next boot, subsequent
I/O operations will discover that the block should be marked bad again,
thus re-syncing the OOB and BBT.
Note that this is a change from the previous default flash-based BBT
behavior.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When changing the rates of the ssp clocks we have to poll the
busy bit, but only when they are enabled. The current code can
not check this properly since the gates are registered as children
of the dividers. This has the effect that when the gate is disabled
the busy bit will be set forever resulting in a freezed system.
Fix this by making the gates parents of the dividers which allows
clk_is_enabled to return the correct result.
The Kernel has the same problem, but here the busy polling is
limited to 10ms, so probably noone noticed this.
The datasheet mentions that the ssp dividers shall only be changed
when the clocks are enabled. The kernel and barebox currently ignore
this. I don't know what effect violating this rule has.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The compiled in dcd images generate an intermediate assembly file. Instead
of generating them as *.S generate them as *.dcd.S to better identify them
as generated files. These are then added to .gitignore.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The old way to boot tiny210 was to restart barebox after loading stage2 image.
This turned out to be unstable and stopped working after barebox refactoring.
Now jump to the same position in the loaded code instead of starting it from
the very beginning.
Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This reverts commit 08c0e206b3.
The external NAND boot code currently uses the _text linker variable
to determine a place for the image. This doesn't work with multi image
support which will link the binary at 0x0. Revert multi image support
for the pcm038 for now until a solution is found.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
we now use a UBI Volume instead of user_block, kernel and root
the bootloader size is 320KiB not 256KiB
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds initialization of from device node with root_node if NULL
is passed. This corresponds to the behavior of all other node iterators.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_get_next_available_child does not iterate but always tries the
same node over and over again. This first prepares the entry and
then uses list_for_each_entry_continue, instead of for_each_child_of_node
before.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_find_node_by_name suffers from infinite looping, because it
does not check for root node of the tree iterated over. This
fixes this by checking for node->parent to determine whether
the last node has been reached.
Since of_tree_for_each_node does not iterate over the whole tree,
but only over the remaining nodes, rename it to
of_tree_for_each_node_from.
Reported-by: NISHIMOTO Hiroki <hiroki.nishimoto.if@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For splashscreen support on pcm049, this patch adds omap4 framebuffer
platform data and configures display pd050vl1, g104x1, pm070wl4, pd104slf,
edt_etm0350G0dh6, edt_etm0430G0dh6, edt_etmv570G2dhu and edt_etm0700G0dh6
Also add extra muxing and defconfig
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Only UART clocks are included for now, but the code should cover
other peripherals needs, too.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This removes the existing Tegra CAR driver and replaces it with code
ported from the Linux clock framework.
In the current state only the relevant PLLs are supported, but this is
no functional regression from the existing code.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Allows to reuse the clk gate code within other clocks.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In order to properly bring up the system PLLs we need a reliable
clocksource. To break the circular dependency between the clocksource
and the CAR driver, get the OSC frequency with a lowlevel function.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Taken from the Linuxkernel with some small adjustments for barebox.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is a nearly full-blown config for the v7 i.MX (i.MX51, i.MX53 and
i.MX6).
currently the following images are built:
barebox-imx51-babbage.img
barebox-imx53-loco.img
barebox-imx6-realq7.img
barebox-genesi-efikasb.img
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is necessary because the C name for the flash header matches
the filename. For multiple board support we have to make the name
unique to prevent linker errors.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Alexander Shiyan
Jan Luebbe
Alexey Galakhov
Jean-Christophe PLAGNIOL-VILLARD
Sebastian Hesselbarth
Philipp Zabel
Christoph Fritz
Lucas Stach