| Commit message (Collapse) | Author | Age | Files | Lines |
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This adds the ability to control barebox over serial lines. The regular
console is designed for human input and is unsuitable for controlling
barebox from scripts since characters can be lost on both ends, the data
stream contains escape sequences and the prompt cannot be easily matched
upon.
This approach is based on the RATP protocol. RATP packages start with a
binary 0x01 which does not occur in normal console data. Whenever a
0x01 character is detected in the console barebox goes into RATP mode.
The RATP packets contain a simple structure with a command/respone
type and data for that type. Currently defined types are:
BB_RATP_TYPE_COMMAND (host->barebox):
Execute a command in the shell
BB_RATP_TYPE_COMMAND_RETURN (barebox->host)
Sends return value of the command back to the host, also means
barebox is ready for the next command
BB_RATP_TYPE_CONSOLEMSG (barebox->host)
Console message from barebox
Planned but not yet implemented are:
BB_RATP_TYPE_PING (host->barebox)
BB_RATP_TYPE_PONG (barebox->host)
For testing purposes
BB_RATP_TYPE_GETENV (host->barebox)
BB_RATP_TYPE_GETENV_RETURN (barebox->host)
Get values of environment variables
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Andrey Smirnov <andrew.smirnov@gmail.com>
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This patch adds support for Reliable Asynchronous Transfer Protocol (RATP)
as described in RFC916.
Communication over RS232 is often unreliable as characters are lost or
misinterpreted. This protocol allows for a reliable packet based communication
over serial lines.
The implementation simply follows the state machine described in the RFC
text with one exception. RFC916 uses a plain checksum for the
transferred data. We decided to use CRC16 for greater robustness. Since
this is the only RFC916 implementation we currently know of interoperability
with other implementations should not matter.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Andrey Smirnov <andrew.smirnov@gmail.com>
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In commit 75b682795eafb2385556a9642f09e0af96a1264a using a path that
has a partition description broke.
Fix this and simpfy the code some.
There is no need to loop over each string in the path property: it's
defined to have at most one parition description, no extant dts has
more than one, and how it would handle more than one didn't make sense
anyway.
Once not looping, __of_find_path() just needs the partition
description text, not both the original node and property name to look
it up from.
When using a partition description, don't lookup the cdev of the node
just to replace it with the partition's cdev.
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds some missing arguments in help string of memtest.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Currently it is not possible to change symbolic links in the default
environment. For example if the default environment contains the
link "current_boot -> mmc" then the following does not work:
$ rm current_boot
$ ln net current_boot
$ saveenv
After reset the link is still pointing to "mmc" and this error appears:
"symlink: /env/boot/current_boot -> net : error -17"
The patch fixes the above problem and moves the "ENV_FLAG_NO_OVERWRITE"
to enable handling of symbolic links in this case too.
Signed-off-by: Zahari Doychev <zahari.doychev@linux.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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*.dtb.lzo are generated during compilatiion, delete them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This fixes a regression, where boards specifying the environment
path using the form device-path = &phandle, "partname:part" would
be unable to find their env.
This is due to of_find_path() switching to cdev_by_device_node()
internally, which expects the device_node member of the main
area cdev to be initialized.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Make sure to not run this board specific initcall on any
other board.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds hmac support to the raw backend.
With this patch, modifications of the header or data of a state partition can
be detected, as the hmac woudln't match anymore. The hmac relies on a shared
secret, which is requested from the keystore, with keystore_get_secret() using
the name of the state partition as the "name" of the secret.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch cleans up the raw backend, so that adding hmac support in the next
patch is easier.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds a simple keystore to barebox. The keystore implements a simple
key-value store to hold arbitrary values.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Explicitly loading environment is not required as it will be loaded if
available during device probing
Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Wihtout this patch, when using more than one state device an alias is
mandatory, otherwise the there will be two state devices with the name state.
This patch fixes the limitation by using the device node's name if no alias is
defined.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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device is not available
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds the function of_find_path_by_node(), which is similar to
of_find_path(), but it translates a device tree node into a barebox device path
directly.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch factors out the device detection logic into separate function, so
that it can be used from another function.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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A comment in the socfpga init said that it was "Clearing emac0 PHY
interface select to 0", but this was doubly incorrect. It was setting
physel for emac1, not emac0, and it was setting physel to 1 (RGMII)
not 0 (GMII). All supported socfpga boards use RGMII, and use emac1,
so fix the comment to reflect the code. But then extend the code to
set the physel for both emac0 and emac1, so it can work on boards that
use either or both emacs (which are called gmac0/1 in the dts).
The Cyclone V datasheet, page 17-60 "EMAC HPS Interface
Initialization", says to set physel while the EMAC is in reset. So
place the EMAC in reset while changing physel. The emacs are not in
reset as code earlier in the boot has already taken most of the
modules out of reset. So put them back in reset while the physel is
changed. The Linux kernel does it this way too.
If barebox has no network support, there is not much point in
configuring the emac physel lines. This would be the case for the
xloader pre-bootloader config, which configures physel, doesn't use
the network, loads the main barebox, which then reconfigures physel
again. Make this code depend on CONFIG_NET so it's just done in the
main barebox. The Linux kernel does not need barebox to do this
initialization to use networking.
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This boolean parameter tells you if the FPGA is programmed or not. It
can be accessed from the shell as "$fpga.programmed". One could use
this to not program the FPGA if it's already programmed.
There is an annoying limitation of the way barebox puts parameters
into the shell env: it requires they have no periods in the device
name. It uses the first period to divide the variable name into a
device and parameter name, which doesn't work correctly if the device
name has a period in it.
Since the names of any devices created from the OF device tree have a
period in them, this is a problem.
So what I did here was create a new device. Its parent will be the OF
device for the fpgamgr and it will in turn be the parent of the
firmware cdev. Previously the cdev's parent was the OF device. This
device won't have period in the name and the parameter is attached to
it. Even without the period limitation, doing this gives a nicer name
"fpga.programmed" instead of "ff706000.fpgamgr.programmed".
The fpgamgr code had a pointer to the OF device in its private state.
I changed this to be a struct for the new "fpga" device, which is then
used in all the places the former pointer was (nothing but dev_dbg,
etc. calls).
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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If a device has the reset-gpios property we can support this through
the reset controller API, so drivers do not have to open code the
support for this property each time themselves as done a few dozen times
in the kernel.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Since we now have dummy reset controllers we no longer need the
*_optional functions. These have been unused anyway, so just remove
them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Treat NULL as a dummy reset line which is returned by the reset core
when there is no reset line connected to a device (that is, no
reset is described in the device tree). With this consumers can
just use the reset functions without having to check for existence.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add support for OMAP Watchdog driver.
Based on omap_wdt Linux driver (v4.3-rc1).
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Deleted pieces of code detect MBR-containig device as a FAT-type device,
if it's first partition contains a FAT filesystem. This behaviour enabled one
to mount the FAT FS which is either directly on the device (disk0) or on
the first partition (disk0.0) using the same command:
mount /dev/disk0 /fat
However, the desired behaviour can be reached with a:
mount /dev/disk0 /fat || mount /dev/disk0.0 /fat || echo "Mounting failed"
Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The current code tests if a partition (i.e. disk0.0) exists and instead
of mounting boot from this partition it uses the whole device (disk0).
This only works because the the FAT code accepts a MBR as input and
automatically skips it.
Let the code use the partition to mount /boot instead as it was
intended. We don't have to stat() the partition device, since this
error will be caught by mount() anyway, so remove the unnecessary
stat().
Reported-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Here is the warning message:
drivers/net/usb/asix.c:427:5: warning: no previous prototype for 'asix_rx_fixup_internal' [-Wmissing-prototypes]
int asix_rx_fixup_internal(struct usbnet *dev, void *buf, int len,
^
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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ax_skb receive buffer unalignment leads to consequent
unalignment data access in network stack routines,
especially in net_checksum().
By-turn unalignment data accesses lead to performance penalty.
Moreover on classic MIPS CPUs without hardware unalignment access
support this leads to undesirable exceptions.
At the moment barebox on MIPS can't parry these unalignment access
exceptions, so the Asix USB Ethernet chips, that need receive
fixup workaround, are completely unusable on MIPS without this patch.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Implement device tree property phy-reset-duration to adjust length of
phy reset.
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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According to the device tree bindings in dts/Bindings/net/fsl-fec.txt
the default phy-reset time is 1ms.
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Don't assume a 1:1 virt to phys mapping, but use the real physical
address returned by the dma alloc function.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The dw MAC requires that all clock domains to be running for it to
finish a MAC reset. This include the clock provided by the PHY.
If the PHY is powered down, bit BMCR_PDOWN set, then it won't be
generating a clock. And so the MAC never comes out of reset. On
shutdown, Linux will put the PHY in powerdown mode, so it can easily
be the case that the PHY is powered down on boot.
See Linux kernel commit 2d871aa07136fe6e576bde63072cf33e2c664e95.
Currently the MAC reset is done before the phy is probed. We can't
power up the phy until it's probed, so the resets must be in the
opposite order. The MAC reset is in device init but the PHY probe is
in device open. Device init is done first, always, while open is done
later, and only if the device is used.
Rather than move the phy probe to init, this moves the MAC reset to
open. It seems better to speed up boots that doesn't use ethernet by
skipping MAC reset than to slow them down by adding PHY probe.
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds optimized timings for Samsung K9K8G08U 1Gb NAND flash.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Marvell PXA3xx and Armada 370/XP share the same NAND controller IP
with some minor differences. With support for controller IP v2, now
allow to build the driver on Armada 370/XP.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Newer versions of PXA3xx NAND controller support a 4th Command Buffer
register. Add the required HWFLAGS and additional write to NDCB0.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add support for HW BCH ECC for those HW versions that support it.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add support for 8bit HW ECC modes supported by later IP versions.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add support for 4bit HW ECC modes supported by later IP versions.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Marvell PXA3xx NAND flash controller IP has been reused in later SoCs
with additional HW features. Add HW BCH ECC as the first known HW
difference.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Newer versions of Marvell PXA3xx NFC also support BCH and therefore
higher ECC strengths than 1. Prepare for different ECC strength by
factoring out ECC init into separate functions by strength. Also,
add a new host variable that indicates BCH ECC.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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With DT helpers for ECC step size and strength, now use them on
Marvell NAND driver.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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