Currently only implements system wide reset functionality.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Replace the ad-hoc clocksource implementation with a proper driver for
the Tegra 20 timer. This driver is able to do the required hardware
initialisation itself.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Only a basic set of clocks is supported. This is a temporary solution
and will go away as soon as the port of the Tegra common clock code from
the Linux kernel is ready to go.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We will follow the Linux kernel and go devicetree only for Tegra. This
doesn't prevent specific code for certain boards, but always requires a
valid DTB for all boards.
Also regenerate the AC100 defconfig to reflect this change.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
All available opensource tools and published BCT configurations use
0x10800 as the default textbase on Tegra 20.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tegra isn't a single architecture, but a collection of more or less
similar chip families. Introduce the same conf define as used in the
Linux kernel to differentiate between those families.
Currently we are only supporting the Tegra20 chip type.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tegras main CPUs are all ARMv7.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The fec padctrl is different from what we have in the kernel iomux
file. To be able to keep the iomux file in sync with the kernel, use
a custom padctrl for the cpuimx51 board.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On OMAP4 SoC there is a SAR memory region (Save & Rescue)
where the ROM code reads the device to boot from.
This patch adds a way to set this.
Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this will allow to have boot sequence and later to use PXE
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With CONFIG_MMU_EARLY enabled the board does not survive the call
to imx53_init_lowlevel(). This should not happen, but the reasons
are currently unknown. This works on other boards like the i.MX53
QSB.
This patch moves the call to imx53_init_lowlevel to
barebox_arm_reset_vector() which is executed with MMU disabled.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
clock_notifier_call_chain() can't be called before init time. Protecting
it with IS_ENABLED(__PBL__) is not enough. This patch splits out a new
imx53_init_lowlevel_early which can be called before init time and does
not have the call to clock_notifier_call_chain() in it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The value for i.MX53 216MHz is actually 432MHz. Use the same value
as for i.MX51 which really corresponds to 216MHz. These are the same
PLL216 values as U-Boot uses.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For now only the v1.2 i.MX28 silicon is supported. The actual information is
read from a magic address within the internal SRAM.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i.MX53 has the bootsource instance information stored
in SBMR[21:22], expose it to the environment.
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>
This patch seperates the imx independent from the arch independent code. The
following functions and enums are renamed:
- imx_bootsource() -> bootsource_get()
- imx_set_bootsource() -> bootsource_set()
- enum imx_bootsource -> enum bootsource
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The cfa-10036 comes in two flavours, with either 128MB or 256MB of RAM
on it.
Since it's not stored anywhere, we need to runtime detect it by
introducing the cfa10036_get_ram_size function.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The ZedBoard has a connection for the GEM0. Use it.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add support for the ethernet device 0 on the Zynq7000 SoC.
The GEM is compatible to/the same one as the macb on at91.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The macb/gem core is used by the Zynq SoC. In preparation of sharing
the macb driver between at91 and Zynq, rename the platform data to
'struct macb_platform_data', and move the definition to a common
location.
Signed-off-by: Josh Cartwright <joshc@eso.teric.us>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Rename the barebox_loc environment variable to bootsource, since
- barebox_loc is a mixture between abbriviation and fulltext which is not nice
- technically it describes the source the SoC has booted from. This is not
necessarily barebox but could also be some other first stage loader.
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>
The second UART is used on the mba53 baseboard. The first UART is only
used on custom hardware. This patch changes the UART to the one used
on the freely available baseboard.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Make loading environment from MMC generic for all OMAP.
Tested on AM335x, OMAP4.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Tested-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The bootsource functions are not specific to the first stage
bootloader. They may also be used for detecting the
bootsource to decide where to load the environment from.
Also clean up includes in board files.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Avnet ZedBoard is an evalboard with a Zynq-7020 based MPSoC.
There is also a Digilent ZedBoard, that is the same but only for
academic customers.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The bootrom only reads an image if the correct checksum is present in the
header. The calculation is pretty simple:
sum over all words from 0x20 to 0x44
Two of this words are the image length. That is why the checksum can not be
calculated until barebox_image_size is known.
The easiest solution is a program that has to be run after make.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds support for the clocktree on zynq7000 SoCs.
The patch is based on clocks.c from the larger patch
ARM: zynq: add suppport for Zynq 7000 SoC
by Josh Cartwright.
The driver in that patch is converted to a platform_driver and code to
enable plls was added.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add basic support for the Xilinx Zynq-7000 EPP architecture.
The Zynq-7000 is an embedded processing platform that combines a Cortex A9
dualcore MPSoC with an Artix-7 FPGA.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On some i.MX SoCs the SDRAM controller has chipselect 2 enabled
by reset default. This confuses our SDRAM size detection. We
already have a fix for this in place. This patch adds the fix
for i.MX35 which needs it aswell. Also since we now detect the
SDRAM size in the SoC specific entry functions we have to apply
the fixup there, too.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch creates a seperate function for mx25 and mx35 to save it's
bootsource.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch renames imx_27_boot_save_loc() to imx27_boot_save_loc(), so that all
imx*_boot_save_loc() functions follow the same nameing sheme.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch removes some code leftover from:
a029e32 ARM i.MX: rework bootsource setting
which is now a no-op.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This function gives all functions a common, i.e. void, return value.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Enums are in the same way as defines, so write them in uppercase.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The number of "#if" has been reduced to have less obfuscation, now have the
three keys or have none of them
Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The pcm051 has no MMC WP pin. This pin is used for a gpio and
needs to be muxed different. Created a custom mux file for
this case.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The muxing in the am33xx_mux.c file is not generic as the muxing
setup does not fit for every board. Move the structs and functions
to the mach/am33xx-mux.h so board dependend mux setups can be
created.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
use a more generic UART selection on OMAP so it can be extended to
other OMAPs
Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
some sort of UART setup has to be done in order to use PUTC_LL
Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
- Add rules to generate dtb files in arch/arm/dts/
- add an initcall which unflattens and probes the internal devicetree
- Add skeleton devicetree
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The external NAND boot code currently does not handle bad blocks
correctly on 2k NAND flashes. This patch adds a barebox_update
handler for external NAND boot which embeds a Bad block table in
the flashed image. The boot code will skip bad blocks found in
this bad block table then.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds 32bytes of space behind the image header (exception table
+ barebox magic) for board/SoC specific use. This can be used for
example to embed some extra information in a flashed image.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i.MX external NAND boot code checks for a bad block every
page, which is wrong. Instead, check for a bad block at the
beginning of each block.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
omap4_usbboot_pdata is not a pointer, so remove the "p"
Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
CS6 and CS7 is a internal CPU resources and these chipselects are
already pre configured, so avoid to rewrite this settings.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for CLPS711X GPIOs. Driver based on
generic GPIO driver.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for COMMON_CLK API for CLPS711X targets.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds clocksource driver for CLPS711X targets and adds
support to platform to use this new driver.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The comment above barebox_arm_entry promises to preserve the boarddata
variable passed to it which can then later get back with
barebox_arm_boarddata(). This function was missing so far, add it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Lucas Stach
Alexander Shiyan
Sascha Hauer
Vicente Bergas
Jean-Christophe PLAGNIOL-VILLARD
Marc Kleine-Budde
Alexandre Belloni
Steffen Trumtrar
Josh Cartwright
Teresa Gámez
Hubert Feurstein