Some sunxi boards ship with SPI flash, which allows booting through the
BootROM. We cover this functionality by a separate SPL "mini" driver.
Separately we have a proper DM_SPI driver for U-Boot proper, which
provides access to the SPI flash through the "sf" command. That allows
to update the firmware on the SPI flash, also to store the environment
there.
However only very few boards actually enable support for U-Boot proper,
even though that would work and the SPL part is configured.
Use the cleaned up configuration scheme to enable SPI flash on those
boards which mention a SPI flash in their .dts, or which use the SPL SPI
support.
Out of the box this would enable storing the environment on the SPI
flash, and allows people to read or write the flash from U-Boot, for
instance to update the SPI flash when booted via an SD card.
For this to actually work there must be a "spi0" alias in the DT, which
most boards are missing. But this should be addressed separately.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Now that sunxi uses CONFIG_SPI more sanely, and can also now properly
load the environment from SPI flash, let's enable the symbol that
actually considers the SPI flash when accessing the environment.
As this symbol depends on CONFIG_SPI, which we now only enable if the
board has a SPI flash, we can make if "default y" for all Allwinner
boards.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Currently we only support to load the environment from raw MMC or FAT
locations on Allwinner boards. With the advent of SPI flash we probably
also want to support using the environment there, so we need to become
a bit more flexible.
Change the environment priority function to take the boot source into
account. When booted from eMMC or SD card, we use FAT or MMC, if
configured, as before.
If we are booted from SPI flash, we try to use the environment from
there, if possible. The same is true for NAND flash booting, although
this is somewhat theoretical right now (as untested).
This way we can use the same image for SD and SPI flash booting, which
allows us to simply copy a booted image from SD card to the SPI flash,
for instance.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
To allow loading and storing the environment from SPI flash, adjust the
raw offset variables for Allwinner boards to make sense there.
U-Boot (including SPL and other blobs) is loaded from the beginning of
SPI flash, so move the environment location as far back as possible, to
not create unnecessary limits. As those offsets are shared with (now
mostly unused) raw MMC environment, we should respect the common one
megabyte limit, which also makes sense on SPI flash.
So limit the environment for those raw locations to 64KB, and place it
just below 1MB (@960KB).
Those values are currently unused, unless someone forcibly enables the
raw MMC environment. In this case it would break as of now, as the
current offset of 544KB is far too low for the current (arm64) U-Boot
proper.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Commit 7945caf22c ("arm: sunxi: Enable SPI/SPI-FLASH support for A64")
selected CONFIG_SPI by default on all Allwinner A64 boards, even though
only 4 out of the 14 A64 boards have a SPI flash chip. All other SoCs
had to manually select DM_SPI and friends, even though they are a
platform property (the sunxi SPI driver is DM_SPI only).
Clean this up to allow easy selection of SPI flash support in U-Boot
proper, by selecting DM_SPI and DM_SPI_FLASH *if* CONFIG_SPI is
selected, for *all* Allwinner SoCs. This simplifies the defconfig for
two Libretech boards already.
Also remove the forced CONFIG_SPI from the A64 Kconfig, instead let the
four boards which allow SPI booting select this explicitly.
Any board wishing to support SPI flash in U-Boot proper now just defines
CONFIG_SPI and CONFIG_SPI_FLASH_<vendor> in its defconfig, Kconfig takes
care of the rest.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Mechanically convert video_hw_init() function to UCLASS_VIDEO probe
callback and replace CONFIG_CFB_CONSOLE by CONFIG_DM_VIDEO.
As framebuffer base address is setup by the bootloader which loads U-Boot,
set plat->base to that fixed framebuffer address.
This change was tested in qemu n900 machine and is working fine.
What does not work is CONFIG_VIDEO_LOGO, seems to be buggy.
Signed-off-by: Pali Rohár <pali@kernel.org>
Ethernet phy like dp83867 is using strapping resistors to setup PHY
address. On Xilinx boards strapping is setup on wires which are connected
to SOC where internal pull ups/downs influnce phy address. That's why there
is a need to setup pins properly (via pinctrl driver for example) and then
perform phy reset. I can be workarounded by reset gpio done for mdio bus
but this is not working properly when multiply phys sitting on the same
bus. That's why it needs to be done via ethernet-phy-id driver where dt
binding has gpio reset per phy.
DT binding is available here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/net/ethernet-phy.yaml
The driver is are reading the vendor and device id from valid phy node
using ofnode_read_eth_phy_id() and creating a phy device.
Kconfig PHY_ETHERNET_ID symbol is used because not every platform has gpio
support.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Link: https://lore.kernel.org/r/70ab7d71c812b2c972d48c129e416c921af0d7f5.1645627539.git.michal.simek@xilinx.com
Avoid a race condition where read transaction is started
keeping expected bytes as 0. Which sometimes would result in sending
STOP signal as no data is expected. Observed on QEMU platform.
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Reviewed-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/487c8026791bfd60719403a2df2c54bb0ae99232.1646122610.git.michal.simek@xilinx.com
Add support for dynamic configuration which will takes care of
configuring the SD secure space configuration registers using firmware
APIs, performing SD reset assert and deassert.
High level sequence:
- Check for the PM dynamic configuration support, if no error proceed
with SD dynamic configurations(next steps) otherwise skip the dynamic
configuration.
- Put the SD Controller in reset.
- Configure SD Fixed configurations.
- Configure the SD Slot Type.
- Configure the BASE_CLOCK.
- Configure the 8-bit support.
- Bring the SD Controller out of reset.
In the above steps, apart from the Fixed configurations, remaining all
configurations are dynamic and they will be read from devicetree.
And also remove hardcoded secure register writes, as dynamic sd config
support is added.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/030a3ec041ff3efebd574b4d2b477ad85f12cbce.1645626962.git.michal.simek@xilinx.com
Most of the frequencies are not rounded up to a proper number.
When we need to devide these frequencies to get a number for example
frequency in Mhz, we see it as one less than the actual intended value.
Ex: If we want to get Mhz from frequency 199999994hz, we will calculate
it using div64_u64(199999994, 1000000) and we will get 199Mhz in place
of 200Mhz.
Add a macro DIV64_U64_ROUND_UP for rounding up div64_u64. This is taken
from linux 'commit 68600f623d69("mm: don't miss the last page because of
round-off error")'.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/f9fdcba76cd692ae436b1d7883b490e3dc207231.1645626962.git.michal.simek@xilinx.com
Since commit 5d94cbd1dc ("scripts: Makefile.lib: generate
dsdt_generated.c instead of dsdt.c"), the file generated
is named dsdt_generated.c instead of dsdt.c.
So all files .gitignore referencing dsdt.c should be
upated with dsdt_generated.c.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The stdout-path property in the device tree does not necessarily
point at a serial device. On machines such as the Apple M1 laptops
where the serial port isn't easy to access and users expect to see
console output on the integrated display stdout-path may point at
the device tree node for the framebuffer for example.
If stdout-path does not point at a node for a serial device, the
serial_check_stdout() will not find a bound device and will drop
down into code that attempts to use lists_bind_fdt() to bind a
device anyway. However, that fallback code does not check that
the uclass of the device is UCLASS_SERIAL. So if stdout-path points
at the framebuffer instead of the serial device it will return a
UCLASS_VIDEO device. Since the code that calls this function
expects the returned device to be a UCLASS_SERIAL device, U-Boot
will crash as soon as it attempts to send output to the console.
Add a check here to verify that the uclass of the bound device
really is UCLASS_SERIAL. If it isn't, serial_check_stdout() will
return an error and serial_find_console_or_panic() will use the
serial device with sequence number 0 as the console and all is fine.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
There is one issue with Heinrich xypron.glpk@gmx.de <xypron.glpk@gmx.de>
record which should be specifically grouped with his name.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
When running against RC_OSC_32k, the watchdog may suffer from running
faster than expected, expiring earlier. The Linux kernel adds a 10%
margin to the timeout calculation by slowing down the read clock rate
accordingly. Do the same here, also to have comparable preset values
for both drivers.
Along this, fix the name of the local var holding to frequency - in Hz,
not kHz.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Stefan Roese <sr@denx.de>
If Armada 37xx watchdog is started before U-Boot then CNTR_CTRL_ACTIVE bit
is set, U-Boot armada-37xx-wdt.c driver fails to initialize and so U-Boot
is unable to use or kick this watchdog.
Do not check for CNTR_CTRL_ACTIVE bit and always initialize watchdog. Same
behavior is implemented in Linux kernel driver.
This change allows to activate watchdog in firmware which loads U-Boot.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Since commit 492ee6b8d0 ("watchdog: wdt-uclass.c: handle all DM
watchdogs in watchdog_reset()"), all the watchdog are started when
the config WATCHDOG_AUTOSTART.
To avoid a binary choice none/all, a property u-boot,noautostart
may be added in the watchdog node of the u-boot device tree to not
autostart this watchdog.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
I've been handling "inofficially" the watchdog related patches for a few
years now. Let's make this official and add a tree for it and also add
myself here in the MAINTAINERS file.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Harald Seiler <hws@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
The Aspeed GPIO driver supports the GPIO controllers found in the
AST2400, AST2500 and AST2600 BMC SoCs. The implementation is a cut-down
copy of the upstream Linux kernel driver, adapted for u-boot.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
This code has been ported from Linux v5.16.9 arch/arm/boot/dts/am33xx.dtsi
file to allow correct usage of MMC2 controller in U-Boot.
This IP block is a bit specific as it is connected to L3 interconnect bus,
whereas mmc[01] are connected to L4.
Proper configuration of this block (including providing clock) is handled
in ti-sysc.c driver.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This change provides similar aliases definitions as now present in
Linux kernel v5.16.9 for am33xx.dtsi file.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
In the Linux kernel (v5.16) for this SoC there are two separate drivers
- namely sdhci-omap.c and omap_hsmmc.c which have separate set of
compatibles.
The U-Boot's drivers/mmc/omap_hsmmc.c driver supports both eMMC and
SD devices - hence the compatible for SDHCI can be added.
After this change the am335x DTS description can be easier ported
from Linux kernel.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Enable the led in the device tree of the refboard bcm96753ref.
It also defines two leds (led_red ad led_green).
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Add the support of the LED IP for bcm6357. This
LED IP supports blinking, fading and pulsating,
but for the moment, only blinking is supported.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This add the initial support of the broadcom reference
board bcm96753ref with a bcm6753 SoC.
This board has 1 GB of RAM, 256 MB of flash (nand),
2 USB port, 1 UART, and 4 ethernet ports.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
The main reason is to send pmufw cfg overlay from U-Boot to PMUFW to enable
access to DP. Overlay is sent when cls command is called and for that IP
has to be enabled in carrier cards.
And IP needs to be also enabled in SOM dt because with DTB reselection new
DT is not parsed in pre reloc U-Boot instance. It is called from board_f
via embedded_dtb_select(). That's why bind function is not able to allocate
memory and it ends up with error:
"Video device 'display@fd4a0000' cannot allocate frame buffer memory
-ensure the device is set up before relocation"
To avoid this situation DP is placed also to SOM where bind function is
called and frame buffer memory is allocated and just reused after DTB
reselection. Result is the same. There could be a problem in Linux with
different DP configurations but that's need to be solved there because
console should be on from u-boot already.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/c4f31641f917fddb09d976f56875057c658f264c.1645629459.git.michal.simek@xilinx.com
