This patch adds the functionality to export the description of the state, but
not the contents of the variables to a DT node. This will be used in a later
patch to "copy" the state description to the kernel device tree during DT
fixup.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- Drop usage of 'ulong', use unsigned long
- remove unnecessary intermediate casting to unsigned long
- Use proper u8/u16/u32 types. Fixes 64bit systems on which ulong is 64bit
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Adding debug statements to this code path does not make much sense
since when enabled it will massively spam the console.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Using xfunctions to allocate log messages is not a good idea. Should
we be out of memory the xfunctions will panic which will cause another
allocation, so we deadlock the system with no message going out.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To allow init code that depends on the environment being loaded.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In commit
d384b5639f of: Drop devicetree merge support
the signature of of_unflatten_dtb() was changed, but the inline documentation
was forgotten to adjust. This patch removes the left over "root" argument from
the doc.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Based on Linux's commit:
commit 09ee9f87d02e779e4fc3f5c29212c733d6d6e349
Author: Michael Abbott <michael.abbott@diamond.ac.uk>
Date: Wed Oct 16 11:41:33 2013 +0300
dm9000: Implement full reset of DM9000 network device
A Davicom application note for the DM9000 network device recommends
performing software reset twice to correctly initialise the device.
Without this reset some devices fail to initialise correctly on
system startup.
N.B. DM9000B on MIPS Creator CI20 board needs additional workaround
(see the 'Make all GPIO pins outputs' and 'Power internal PHY' lines).
This workaround was taken from this U-boot's commit:
commit fbcb7ece0ea1e364180f1cf963e0fa0ce7f6560d
Author: Remy Bohmer <linux@bohmer.net>
Date: Tue Jun 3 15:26:24 2008 +0200
DM9000: Improve eth_reset() routine
According to the application notes of the DM9000 v1.22 chapter 5.2 bullet 2, the
reset procedure must be done twice to properly reset the DM9000 by means of software.
This errata is not needed anymore for the DM9000A, but it does not bother it.
This change has been tested with DM9000A, DM9000E, DM9000EP.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This errata workaround was introduced for i.MX6Q, i.MX6D and i.MX6SL.
Old revisions of i.MX6s chips had no problems with the PFD resets.
In a newer i.MX6s revision I had issues with this code when booting in
internal boot mode from NAND or in serial downloader mode. FUSE mode
worked fine although it jumped directly to serial downloader mode.
This patch executes the PFD workaround only for i.MX6Q and i.MX6D which
fixes the issues I saw.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Bootstrap_read_devfs does not remove the devices it creates during the
course of its execution which might be considered as a resource
leak. Remedy that by adding the code to remove those devices upon
function completion.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Check for errors returned by dev_add_bb_dev() and bail if there
are any.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In case of a failure in one of the cdev_* functions original version
of bootstrap_read_devfs would not release memory allocated for barebox
header or memory allocated for the image. This commit fixes this by
adding resource deallocation code.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Check for errors returned by devfs_add_partition() and bail if there
are any.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Original version of 'read_image_head' would not free the memory
allocated for barebox header in cases of any failure. Fix this by
adding a dedicated resourse de-allocation code path.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
If called with '-b' option 'imx-image' tool prepends barebox header to
the image, but the tool does not fill the data at image size offset
correctly. Fix that.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit add a very basic code to allow Barebox to be booted from
IRAM. Given that the amount of IRAM on most i.MX variants is
insufficient to contain a copy of Barebox with any reasonable degree
of functionality this code uses IRAM only as a temporary location and
eventually bootstraps from DRAM. But the presense of the intermediate
IRAM-only stage allows to add provisions to test the area of DRAM that
Barebox would be using to facilitate various testing scenarious.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Make 'check_file_size' more flexible by not hardcoding the file whose
size is going to be checked to '$@'. This way it is possible to use
this subroutine to check the size of files other than the target of
the rule.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Move all of the common clock ungating code in early UART
initialization into a dedicated subroutine that can be shared by all
of the users.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
NOTE: Boards 'karo-tx25' and 'tqma53' can benefit from this
refactoring as well, but they were not converted because of the lack
of i.MX25 or i.MX53 based hardware to test on.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Convert PUTC_LL to use IOMEM instead of explicit casting to 'void *',
since the former seem to be more appropriate to the situation.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
It appears that all i.MX51 and i.MX6 based boards that support early
debug output inevitably do exactly the same thing with the registers
of the UART peripheral. So to avoid code duplication three new
subroutines are introduced:
- imx_uart_setup_ll() that allows user to perform aforementioned
"same thing" on any arbitrary UART at 'uartbase' and clocked at
'refclock' Hz.
- imx6_uart_setup_ll() and imx5_uart_setup_ll() that do those
actions assuming UART to be the one specified in configuration and
'refclock' to be equal to what it is when SoC comes out of reset.
NOTE: Please note that 'imx*_uart_setup_ll' functions do add a slight
difference in behaviour by dropping the initialization of ONEMS and
UESC registers since those do not seem to be needed for early UART
functionality
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add two functions to calculate values for UBMR and UBIR
registers. This way both early serial initalization code and
serial_imx.c can use them and not duplicate the code.
Singed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Move UART definitions into a separate file to avoid redefinition in
<mach/debug_ll.h> and magical constants in low level UART
initialization code.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The variable name misses a CONFIG_ prefix to work as expected.
Fixes: 05a1e4b ARM: i.MX5: Do not register fixed clocks twice
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Marc Kleine-Budde
Sascha Hauer
Robert Schwebel
Antony Pavlov
Markus Pargmann
Andrey Smirnov