imx: wdog: Introduce CFG_IMX_WDOG_EXT_RESET for non-DTB mode

When resetting a system that has not booted up with a full DTB in memory
the value ext_reset will always be false.

This patch introduces

imx: wdog: Introduce CFG_IMX_WDOG_EXT_RESET for non-DTB mode

When resetting a system that has not booted up with a full DTB in memory
the value ext_reset will always be false.

This patch introduces a platform define to tell the watchdog driver to
drive ext_reset.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

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imx: wdog: Skip DTB wdog init on DTB overlay

When OPTEE is providing a DTB overlay to a subsequent boot stage CFG_DT
will be true as will CFG_EXTERNAL_DTB_OVERLAY.

In this case there will be no DTB

imx: wdog: Skip DTB wdog init on DTB overlay

When OPTEE is providing a DTB overlay to a subsequent boot stage CFG_DT
will be true as will CFG_EXTERNAL_DTB_OVERLAY.

In this case there will be no DTB for the imx watchdog driver to consume so
do not try to do so.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

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core: rename get_dt_blob() into get_dt()

Rename get_dt_blob() into get_dt() to get some consistency in `dt`,
`dtb`, `fdt` labelling in generic_boot.c

Signed-off-by: Etienne Carriere <etienne.carrie

core: rename get_dt_blob() into get_dt()

Rename get_dt_blob() into get_dt() to get some consistency in `dt`,
`dtb`, `fdt` labelling in generic_boot.c

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: serial8250_uart_dev_init(): use calloc()

Allocate pl011_data with calloc() instead of malloc() get initialized
memory.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Fixes: d2769

core: serial8250_uart_dev_init(): use calloc()

Allocate pl011_data with calloc() instead of malloc() get initialized
memory.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Fixes: d276907c8c4f ("core: drivers: serial8250_uart: Add DT support")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: pl011_dev_alloc(): use calloc()

Allocate pl011_data with calloc() instead of malloc() get initialized
memory.

Without this could pd->base.va contain garbage when pl011_init() is
called.

Revi

core: pl011_dev_alloc(): use calloc()

Allocate pl011_data with calloc() instead of malloc() get initialized
memory.

Without this could pd->base.va contain garbage when pl011_init() is
called.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Fixes: ddf45954360c ("pl011: dt: Add DT support")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: GICv3: Handle group 1 secure interrupts

As per GICv3 architecture specification (Section 4.6 Interrupt grouping),
secure EL1 (Trusted OS) handles secure group 1 physical interrupts and
EL3

drivers: GICv3: Handle group 1 secure interrupts

As per GICv3 architecture specification (Section 4.6 Interrupt grouping),
secure EL1 (Trusted OS) handles secure group 1 physical interrupts and
EL3 handles group 0 physical interrupts which are considered as FIQs
(foreign interrupt) for Trusted OS.

Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (FVP)
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>

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drivers: imx_uart: avoid hang if UART is disabled

Avoid indefinite hangs by not writing to the UART if it's disabled.
If the UART is disabled, the write and flush routines will hang
indefinitely whi

drivers: imx_uart: avoid hang if UART is disabled

Avoid indefinite hangs by not writing to the UART if it's disabled.
If the UART is disabled, the write and flush routines will hang
indefinitely which can be difficult to debug.

Tested-by: Jordan Rhee <jordanrh@microsoft.com>
Signed-off-by: Jordan Rhee <jordanrh@microsoft.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

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drivers: imx_uart: ensure space in TX UART before writing

Tested-by: Jordan Rhee <jordanrh@microsoft.com>
Signed-off-by: Jordan Rhee <jordanrh@microsoft.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

plat-imx: add mx7dclsom platform flavor

Tested-by: Jordan Rhee <jordanrh@microsoft.com>
Signed-off-by: Jordan Rhee <jordanrh@microsoft.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

core: correct unpaged constraint on GIC driver

Release of secondary boot cores on 32bit machine use SMC that
issue a SGI on secondary core. Since the interrupt is raised
from the monitor mode, the r

core: correct unpaged constraint on GIC driver

Release of secondary boot cores on 32bit machine use SMC that
issue a SGI on secondary core. Since the interrupt is raised
from the monitor mode, the related GIC driver resources must be
tagged as unpaged.

This change costs around 300 bytes of unpaged resident memory.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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imx: wdog: correct wdog_path

The prefix `0` is removed in Linux Kernel upstream code,
so let's drop it to let wdog work.

Linux Kernel commit 67b8d5c7081221efa252("Linux 4.17-rc5")

Signed-off-by: P

imx: wdog: correct wdog_path

The prefix `0` is removed in Linux Kernel upstream code,
so let's drop it to let wdog work.

Linux Kernel commit 67b8d5c7081221efa252("Linux 4.17-rc5")

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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drivers: hi16xx_rng: replace mutex with spinlock

The mutex in hw_get_random_byte() protects a very short section of code.
A spinlock is more lightweight and therefore better suited to the task.

Sig

drivers: hi16xx_rng: replace mutex with spinlock

The mutex in hw_get_random_byte() protects a very short section of code.
A spinlock is more lightweight and therefore better suited to the task.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: imx_wdog driver cleanup

use WDT_WCR defined in watchdog specific imx_wdog.h
instead of WCR_OFF defined in the platform imx-regs.h

Signed-off-by: Silvano di Ninno <silvano.dininno@nxp.com>

drivers: imx_wdog driver cleanup

use WDT_WCR defined in watchdog specific imx_wdog.h
instead of WCR_OFF defined in the platform imx-regs.h

Signed-off-by: Silvano di Ninno <silvano.dininno@nxp.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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core: stm32_uart driver

Used by platform stm32mp1.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <je

core: stm32_uart driver

Used by platform stm32mp1.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add new RNG implementation

Adds a new cryptographically secure pseudo random number generator known
as Fortuna. The implementation is based on the description in [0]. This
implementation repla

core: add new RNG implementation

Adds a new cryptographically secure pseudo random number generator known
as Fortuna. The implementation is based on the description in [0]. This
implementation replaces the implementation in LTC which was used until
now.

Gathering of entropy has been refined with crypto_rng_add_event() to
better match how entropy is added to Fortuna. A enum crypto_rng_src
identifies the source of the event. The source also controls how the
event is added. There are two options available, queue it in a circular
buffer for later processing or adding it directly to a pool. The former
option is suitable when being called from an interrupt handler or some
other place where RPC to normal world is forbidden.

plat_prng_add_jitter_entropy_norpc() is removed and
plat_prng_add_jitter_entropy() is updated to use this new entropy source
scheme.

The configuration of LTC is simplified by this, now PRNG is always drawn
via prng_mpa_desc.

plat_rng_init() takes care of initializing the PRNG in order to allow
platforms to override or enhance the Fortuna integration.

[0] Link:https://www.schneier.com/academic/paperfiles/fortuna.pdf

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: drivers: serial8250_uart: Add DT support

Add DT support for serial8250 uart driver. The matchtable currently
supports allwinner H2+ SoC.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org

core: drivers: serial8250_uart: Add DT support

Add DT support for serial8250 uart driver. The matchtable currently
supports allwinner H2+ SoC.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>

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Remove license notice from STMicroelectronics files

Since a while the source files license info are defined by SPDX
identifiers. We can safely remove the verbose license text from the
files that are

Remove license notice from STMicroelectronics files

Since a while the source files license info are defined by SPDX
identifiers. We can safely remove the verbose license text from the
files that are owned by either only STMicroelectronics or only both
Linaro and STMicroelectronics.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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plat-imx: remove dependency on CFG_DT=y

Enable IMX to run without a device tree (CFG_DT=n).
The only use of the device tree is for the WDOG driver
to get it's base address.

Tested on Sabre IMX6 and

plat-imx: remove dependency on CFG_DT=y

Enable IMX to run without a device tree (CFG_DT=n).
The only use of the device tree is for the WDOG driver
to get it's base address.

Tested on Sabre IMX6 and Sabre IMX7.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Jordan Rhee <jordanrh@microsoft.com>
Signed-off-by: Jordan Rhee <jordanrh@microsoft.com>

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Remove support for Allwinner A80 platform (plat-sunxi)

It has been almost three years since we have heard about plat-sunxi
(no new contributions, no patch ack'ed or tested, no feedback at
release ti

Remove support for Allwinner A80 platform (plat-sunxi)

It has been almost three years since we have heard about plat-sunxi
(no new contributions, no patch ack'ed or tested, no feedback at
release time). Therefore, remove support for this platform.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
CC: Sun Yangbang <sunny@allwinnertech.com>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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tzc380: export more api

Introduce tzc_security_inversion_en tzc_enable_region tzc_fail_dump and
tzc_int_clear.

When we want to block secure access to region configured TZC_ATTR_SP_NS_RW,
need to us

tzc380: export more api

Introduce tzc_security_inversion_en tzc_enable_region tzc_fail_dump and
tzc_int_clear.

When we want to block secure access to region configured TZC_ATTR_SP_NS_RW,
need to use tzc_security_inversion_en.

Sometimes we need to configure the regions first, then enable the
region.

tzasc380 interrupt could be enabled to catch some illegal access
with tzc_fail_dump and tzc_int_clear.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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tzc380: do not write reserved bits

For region0, only SP is configurable, so should not configure
region low/high.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander

tzc380: do not write reserved bits

For region0, only SP is configurable, so should not configure
region low/high.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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Remove 'All rights reserved' from Linaro files

The text 'All rights reserved' is useless [1]. The Free Software
Foundation's REUSE Initiative best practices document [2] does not
contain these words

Remove 'All rights reserved' from Linaro files

The text 'All rights reserved' is useless [1]. The Free Software
Foundation's REUSE Initiative best practices document [2] does not
contain these words. Therefore, we can safely remove the text from the
files that are owned by Linaro.

Generated by:
spdxify.py --linaro-only --strip-arr optee_os/

Link: [1] https://en.wikipedia.org/wiki/All_rights_reserved
Link: [2] https://reuse.software/practices/
Link: [3] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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Remove license notice from Linaro files

Now that we have added SPDX identifiers, we can safely remove the
verbose license text from the files that are owned by Linaro.

Generated by [1]:
spdxify.p

Remove license notice from Linaro files

Now that we have added SPDX identifiers, we can safely remove the
verbose license text from the files that are owned by Linaro.

Generated by [1]:
spdxify.py --linaro-only --strip-license-text optee_os/

Link: [1] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] wa

Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] was used to double check the license matching
code in the Python script. All the licenses detected by scancode are
either detected by spdxify.py, or have no SPDX identifier, or are false
matches.

Link: [1] https://spdx.org/licenses/
Link: [2] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Link: [3] https://github.com/nexB/scancode-toolkit
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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core: drivers: imx_wdog: fix register access

The registers's base address are 16bits aligned, so read32/write32
should be replaced with read16/write16.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Ac

core: drivers: imx_wdog: fix register access

The registers's base address are 16bits aligned, so read32/write32
should be replaced with read16/write16.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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