- dragonboard410c, synquacer, aspeed fixes / updates
- pl011 serial driver fixes
- Two generic arm bugfixes

Commit b81406db ("arm: serial: Add debug UART capability to the
pl01x driver") add supports to use pl01x as a debug UART. However,
due to CONFIG_IS_ENABLED macro requires CONFIG_SPL_* prefix, the
_debug_uart_init() would not choose TYPE_PL011 in SPL build. This
patch fixes the bug by judging CONFIG_DEBUG_UART_PL011 explicitly.
Signed-off-by: NChen Baozi <chenbaozi@phytium.com.cn>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Fix missing reference operator '&' to correctly get
HW register addresses for writel().
Signed-off-by: NChia-Wei Wang <chiawei_wang@aspeedtech.com>

pl01x_putc() might return -EAGAIN if there was no space in FIFO. In that
case, high-level caller should wait until there is space and resend the
character.
Signed-off-by: NChen Baozi <chenbaozi@phytium.com.cn>
Reviewed-by: NStefan Roese <sr@denx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

smc and hvc commands take upto 8 user input arguments, the maximum
number of arguments of the U_BOOT_CMD macro should set to 9.

Besides, fix the typo (arg7 -> arg6) in hvc command's help message.
Signed-off-by: NSiew Chin Lim <elly.siew.chin.lim@intel.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

CNTFRQ_EL0 is only writable from the highest supported exception
level on the platform. For Armv8-A, this is typically EL3, but
technically EL2 and EL3 are optional so it may need to be
initialized at EL2 or EL1. For Armv8-R, the highest exception
level is always EL2.

This patch moves the initialization outside of the switch_el
block and uses a new macro branch_if_not_highest_el which
dynamically detects whether it is at the highest supported
exception level.

Linux's docs state that CNTFRQ_EL0 should be initialized by the
bootloader. If not set, the the U-Boot prompt countdown hangs.
Signed-off-by: NPeter Hoyes <Peter.Hoyes@arm.com>

For some reason, the DragonBoard 410c aborts autoboot immediately if
U-Boot is started without LK. It looks like it picks up a single broken
character via serial and therefore believes a key was pressed to abort
autoboot.

After some debugging, it seems like adding some delay after pinctrl
setup but before UART initialization fixes the issue. It's also worth
mentioning that unlike when booting from LK, the pinctrl setup is
actually necessary when booting U-Boot without LK since UART is broken
if the pinctrl line is removed.

I suspect that reconfiguring the pins might take some time to stabilize
and if the UART controller is enabled too quickly it will pick up some
random noise. Adding a few milliseconds of delay fixes the issue and
shouldn't have any other negative side effects.

3ms seems to be the minimum delay required in my tests, use 5ms instead
just to be sure.
Signed-off-by: NStephan Gerhold <stephan@gerhold.net>

At the moment pressing the volume down key does not actually launch
fastboot. This is because setting "bootdelay" to "-1" actually
disables autoboot and drops to the U-Boot console. It does not execute
the "bootcmd".

The correct value for "bootdelay" here would be "-2", which disables
the delay and key checking and would immediately execute the "bootcmd".

However, even better in this case is using "preboot" to trigger Fastboot.
The advantage is that running "fastboot continue" will actually continue
the autoboot process instead of ending up in the U-Boot shell.

Also make sure to unset "preboot" again immediately in case the user
saves the environment after triggering fastboot.

Cc: Ramon Fried <rfried.dev@gmail.com>
Fixes: aa043ee9 ("db410c: automatically launch fastboot")
Signed-off-by: NStephan Gerhold <stephan@gerhold.net>
Reviewed-by: NRamon Fried <rfried.dev@gmail.com>

The DragonBoard 410c has proprietary firmware from Qualcomm that
reserves 8 MiB of memory for tz/smem/hyp/rmtfs/rfsa from 0x86000000
to 0x86800000. I'm not aware of any ATF (ARM Trusted Firmware) port
for DB410c that would reserve 30 MiB of memory at the end of RAM.
I suspect the comment might have been copied from hikey.h which has
a very similar comment (and which actually does have an ATF port).

Reducing the memory size just prevents U-Boot from using the end of
the RAM, not the reserved region inbetween. Therefore we might as well
display the correct DRAM size (1 GiB) instead of strange 986 MiB.

Fixes: 626f048b ("board: Add Qualcomm Dragonboard 410C support")
Signed-off-by: NStephan Gerhold <stephan@gerhold.net>
Reviewed-by: NRamon Fried <rfried.dev@gmail.com>

At the moment the U-Boot port for the DragonBoard 410c is designed
to be loaded as an Android boot image after Qualcomm's Little Kernel (LK)
bootloader. This is simple to set up but LK is redundant in this case,
since everything done by LK can be also done directly by U-Boot.

Dropping LK entirely has at least the following advantages:
  - Easier installation/board code (no need for Android boot images)
  - (Slightly) faster boot
  - Boot directly in 64-bit without a round trip to 32-bit for LK

So far this was not possible yet because of unsolved problems:

  1. Signing tool: The firmware expects a "signed" ELF image with extra
     (Qualcomm-specific) ELF headers, usually used for secure boot.
     The DragonBoard 410c does not have secure boot by default but the
     extra ELF headers are still required.

  2. PSCI bug: There seems to be a bug in the PSCI implementation
     (part of the TrustZone/tz firmware) that causes all other CPU cores
     to be started in 32-bit mode if LK is missing in the boot chain.
     This causes Linux to hang early during boot.

There is a solution for both problems now:

  1. qtestsign (https://github.com/msm8916-mainline/qtestsign)
     can be used as a "signing" tool for U-Boot and other firmware.

  2. A workaround for the "PSCI bug" is to execute the TZ syscall when
     entering U-Boot. That way PSCI is made aware of the 64-bit switch
     and starts all other CPU cores in 64-bit mode as well.

Simplify the dragonboard410c board by removing all the extra code that
is only used to build an Android boot image that can be loaded by LK.
This allows dropping the custom linker script, special image magic,
as well as most of the special build/installation instructions.

CONFIG_REMAKE_ELF is used to build a new ELF image that has both U-Boot
and the appended DTB combined. The resulting u-boot.elf can then be
passed to the "signing" tool (e.g. qtestsign).

The PSCI workaround is placed in the "boot0" hook that is enabled
with CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK. The extra check for EL1 allows
compatibility with custom firmware that enters U-Boot in EL2 or EL3,
e.g. qhypstub (https://github.com/msm8916-mainline/qhypstub).

As a first step these changes apply only to DragonBoard410c.
Similar changes could likely also work for the DragonBoard 820c.

Note that removing LK wouldn't be possible that easily without a lot of
work already done three years ago by Ramon Fried. A lot of missing
initialization, pinctrl etc was already added back then even though
it was not strictly needed yet.

Cc: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: NStephan Gerhold <stephan@gerhold.net>

Since we can not set OsIndications from Runtime Services
SetVariables at this moment, it is better to ignore the
OsIndications if there is any capsule file in the
correct place.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Since the recent commit;

 commit b891ff18 ("efi_loader: Force a single FMP instance per hardware store")

forces a single FMP instances for a storage, we can not
enable both RAW and FIT capsule image support at once.
Since RAW capsule image support is simpler than FIT,
enable RAW capsule image instead of FIT by default.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Enable UEFI secure boot on synquacer. Note that unless user
setup their keys, the secure boot will not work.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Since the U-Boot for the SynQuacer DeveloperBox is designed for
compatible with EDK2 boot, we don't need to support Ext2/4 fs
support by default. Drop it.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Since MTD partitions are based on the devicetree name,
remove unneeded mtdparts settings and update DFU setting.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Add partition information to the spi-nor flash.
This is required for accessing NOR flash via mtdparts.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>
Reviewed-by: NMarek Behún <marek.behun@nic.cz>

Make the U-Boot binary for SynQuacer position independent so
that the previous bootloader (SCP firmware or BL2) can load
the U-Boot anywhere.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

Since the SCBM SMMU is not only connected to the NETSEC
but also shared with the F_SDH30 (eMMC controller), that
should be initialized at board level instead of NETSEC.

Move the SMMU initialization code into board support
and call it from board_init().

Without this fix, if the NETSEC is disabled, the Linux
eMMC ADMA cause an error because SMMU is not initialized.
Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>

- A new driver uclass is created to handle the reboot mode control.
- Add support for libcrypt-style passwords for autoboot

This adds tests for the crypt-based and plain SHA256-based password hashing
algorithms in the autoboot flow.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

In case crypt-based hashing is enabled this will be the default mechanism
that is used. If a user wants to have support for both, the environment
variable `bootstopusesha256` can be set to `true` to allow plain SHA256
based hashing of the password.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

The key-sequence based unlock mechanisms are sensitive to junk symbols
that could have been sent to stdin and are still waiting to be retrieved.
Enabling this option will read all symbols off stdin before displaying the
autoboot prompt (and starting to read the password from stdin).
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

In case a user has to enter a complicated password it is sometimes
desireable to give the user more time than the default timeout.
Enabling this feature will disable the timeout entirely in case the user
presses the <Enter> key before entering any other character.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

While doing code-review internally this got nitpicked by 2 reviewers, so
I decided to include this here.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Hook into the autoboot flow as an alternative to the existing
mechanisms.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NHeiko Schocher <hs@denx.de>

In order to prevent using the global errno, replace it with a static
version and create a wrapper function which returns the error value.
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add the basic functionality required to support the standard crypt
format.
The files crypt-sha256.c and crypt-sha512.c originate from libxcrypt and
their formatting is therefor retained.
The integration is done via a crypt_compare() function in crypt.c.

```
libxcrypt $ git describe --long --always --all
tags/v4.4.17-0-g6b110bc
```
Signed-off-by: NSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NHeiko Schocher <hs@denx.de>

RTC devices could provide battery-backed memory that can be used for
storing the reboot mode magic value.

Add a new reboot-mode back-end that uses RTC to store the reboot-mode
magic value. The driver also supports both endianness modes.
Signed-off-by: NNandor Han <nandor.han@vaisala.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

A use case for controlling the boot mode is when the user wants
to control the device boot by pushing a button without needing to
go in user-space.

Add a new backed for reboot mode where GPIOs are used to control the
reboot-mode. The driver is able to scan a predefined list of GPIOs
and return the magic value. Having the modes associated with
the magic value generated based on the GPIO values, allows the
reboot mode uclass to select the proper mode.
Signed-off-by: NNandor Han <nandor.han@vaisala.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

A new driver uclass is created to handle the reboot mode control.

The new uclass driver is updating an environment variable with the
configured reboot mode. The mode is extracted from a map provided
at initialization time. The map contains a list of modes
and associated ids.
Signed-off-by: NNandor Han <nandor.han@vaisala.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

- Assorted FIT, optee, pcf8575, mux, vexpress64 and distro bootcmd fixes.
- Allow pinmux status to take pin names

CONFIG_NET_MULTI has been removed long time ago by commit 795428fc
("net: remove CONFIG_NET_MULTI") but 4 boards were added later which wasn't
found.  The patch is removing this reference from 4 boards.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NChris Packham <chris.packham@alliedtelesis.co.nz>

The macro should be passed a state, which should be passed
to the actual function.  Otherwise using that macro would
yield a build error.
Signed-off-by: NPatrick Wildt <patrick@blueri.se>
Reviewed-by: NPratyush Yadav <p.yadav@ti.com>

The ARM Juno boards can be used as somewhat decent machines to run
off-the-shelf distributions, with USB, SATA, GBit Ethernet and 8GB of
DRAM.

With stable DTs in the board's NOR flash this would work really nicely,
however the default boot command is to fetch a kernel and an initrd from
the on-board NOR flash, which sounds somewhat embedded.

Include the config_distro_bootcmd.h header and define the available
devices (starting with USB, to catch USB installer sticks) to make
distributions and UEFI work out of the box.
The NOR flash kernel functionality is still preserved as the last
resort, should all other methods fail.
Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>

The generic distro boot sequence iterates over several types of devices,
trying one after another. In doing do, it starts with setting the
"devtype" variable, then uses this later in more generic commands.

Now most (block) device types use a local variable for that, but DHCP
puts the type into the environment, where it shadows any local variables.
As a consequence any boot attempt after bootcmd_dhcp has been run fails:
===========================
VExpress64# run bootcmd_dhcp
...
VExpress64# run bootcmd_sata0
SATA#0:
        (3.0 Gbps)
SATA#1:
        (No RDY)
Device 0: Model: 16GB SATA Flash Drive  ....
... is now current device
Couldn't find partition dhcp 0:1
===========================
This problem typically doesn't show, because DHCP is mostly the last
command to try, but is a problem when this order is different, or when
distro_bootcmd or bootcmd_xxx are run separately or multiple times.

Let bootcmd_dhcp use a local variable, as the other kids do, to make the
order of boot commands irrelevant, and allow repeated calls.
Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

When we build U-Boot with POSITION_INDEPENDENT we must have
SYS_TEXT_BASE be set to zero.  Make this the default in that case.
Signed-off-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NMark Kettenis <kettenis@openbsd.org>

Switch to fit_image_get_data_and_size() for consistency with all other
data loaded from FIT.
Signed-off-by: NJohn Keeping <john@metanate.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

As 'part_get_info_by_name' now returns more status codes than just
-1 to indicate failure, we need to update the return value check.
Signed-off-by: NAnders Dellien <anders.dellien@arm.com>
Reviewed-by: NSean Anderson <sean.anderson@seco.com>

This patch add support for using NXP's pca8574 I2C IO expander, which
has only 8 IO lines.

After this change the .data member's information from struct udevice_id
are used to either sent one or two bytes.

Moreover, the '_le16' suffix from pcf8575_i2c_{write|read}_le16()
functions have been removed as now we also sent 8 bit data.
Signed-off-by: NLukasz Majewski <lukma@denx.de>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Those members are not used anymore as ones from gpio_dev_priv
structure (when DM_GPIO support is enabled) are used instead.
Signed-off-by: NLukasz Majewski <lukma@denx.de>
Reviewed-by: NHeiko Schocher <hs@denx.de>