core: dt_driver: add DT_DRIVER_NVMEM support

Handle DT_DRIVER_NVMEM the same way that DT_DRIVER_PINCTRL is handled.
Indeed, it uses the same kind of DT references (phandle to a subnode of a
controll

core: dt_driver: add DT_DRIVER_NVMEM support

Handle DT_DRIVER_NVMEM the same way that DT_DRIVER_PINCTRL is handled.
Indeed, it uses the same kind of DT references (phandle to a subnode of a
controller) to get a nvmem cell.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: fixup of transfer list header size

Add 4 reserved bytes at the tail of the transfer list header.
This fixes a non-8-bytes aligned header when "flags" was introduced
into the header.

Fixes: 50

core: fixup of transfer list header size

Add 4 reserved bytes at the tail of the transfer list header.
This fixes a non-8-bytes aligned header when "flags" was introduced
into the header.

Fixes: 508e2476b232 ("core: update transfer list header and signature")
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: update transfer list header and signature

Add tl->flags and TL_FLAGS_HAS_CHECKSUM to align to the latest FW
Handoff spec update.
Bypass checksum verifying and updating if TL_FLAGS_HAS_CHECKSUM

core: update transfer list header and signature

Add tl->flags and TL_FLAGS_HAS_CHECKSUM to align to the latest FW
Handoff spec update.
Bypass checksum verifying and updating if TL_FLAGS_HAS_CHECKSUM bit
is not set in tl->flags.
Update TL signature to 4a0f_b10b to align to the latest FW Handoff
spec update.

Note: It causes Transfer List ABI breakage due to FW Handoff spec
stays with same rev number (v0.9) with above changes.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: add interrupt_get_main_chip_may_fail()

Add interrupt_get_main_chip_may_fail() to be able to check if it's
possible to use interrupts without causing a panic.

Signed-off-by: Jens Wiklander <je

core: add interrupt_get_main_chip_may_fail()

Add interrupt_get_main_chip_may_fail() to be able to check if it's
possible to use interrupts without causing a panic.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>

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core: interrupt: add interrupt_create_handler()

Adds interrupt_create_handler() API function in interrupt framework.
The function is to be used with interrupt controls obtained
from the DT with int

core: interrupt: add interrupt_create_handler()

Adds interrupt_create_handler() API function in interrupt framework.
The function is to be used with interrupt controls obtained
from the DT with interrupt_dt_get() interrupt_dt_get_by_index() or
interrupt_dt_get_by_name().

The function differs from legacy interrupt_add_handler() in that
this latter always reconfigure the interrupt while new
interrupt_create_handler() function assumes the interrupt was configured
from interrupt_dt_get() or friends.

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

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core: interrupt: registering interrupt providers

Adds interrupt chip framework API functions for an interrupt controller
to register as an interrupt provider in the driver probing sequence
based on

core: interrupt: registering interrupt providers

Adds interrupt chip framework API functions for an interrupt controller
to register as an interrupt provider in the driver probing sequence
based on device tree. This allows interrupt consumer to be deferred
when a dependent interrupt controller is not yet initialized.

Interrupt controllers register a driver in DT_DRIVER providers list
with: interrupt_register_provider().

Interrupt consumer can get their interrupt through DT data with
interrupt_dt_get(), interrupt_dt_get_by_index() or
interrupt_dt_get_by_name().

This change removes inclusion of interrupt.h from kernel/dt.h as it is
not needed and conflicts with inclusion of kernel/dt.h from
kernel/interrupt.h.

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

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core: dt_driver: reference output device reference as void *

Changes dt_driver API function to reference device reference as
void * instead of void ** which could be confusing as the reference
can b

core: dt_driver: reference output device reference as void *

Changes dt_driver API function to reference device reference as
void * instead of void ** which could be confusing as the reference
can be a pointer to a device pointer (e.g. in clk_dt.c) or a pointer
to a structure (e.g. interrupt.c).

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

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core: add new argument to init_external_dt()

Add argument to function init_external_dt() to allow callers to specify
the maximum size of external DTB to be initialized.

Signed-off-by: Raymond Mao <

core: add new argument to init_external_dt()

Add argument to function init_external_dt() to allow callers to specify
the maximum size of external DTB to be initialized.

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

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core: interrupt_raise_sgi() updates

Adds ITR_CPU_MASK_TO_THIS_CPU and ITR_CPU_MASK_TO_OTHER_CPUS to simplify
targeting CPUs in some use cases. The cpu_mask parameter is changed to a
uint32_t to make

core: interrupt_raise_sgi() updates

Adds ITR_CPU_MASK_TO_THIS_CPU and ITR_CPU_MASK_TO_OTHER_CPUS to simplify
targeting CPUs in some use cases. The cpu_mask parameter is changed to a
uint32_t to make room for the two new flags.

The gic driver is updated to support this new flag.

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

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core: add transfer list API

Introduce Transfer List API into kernel to implement Firmware
Handoff specification

Link: https://github.com/FirmwareHandoff/firmware_handoff
Signed-off-by: Raymond Mao

core: add transfer list API

Introduce Transfer List API into kernel to implement Firmware
Handoff specification

Link: https://github.com/FirmwareHandoff/firmware_handoff
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: kernel: interrupt: fix inline description

Fixes the inline description comment for type get_of_device_func
and API function dt_driver_device_from_parent().

Fixes: b357d34fe91f ("core: dt_driv

core: kernel: interrupt: fix inline description

Fixes the inline description comment for type get_of_device_func
and API function dt_driver_device_from_parent().

Fixes: b357d34fe91f ("core: dt_driver: swap TEE_result and retrieved device reference")
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: interrupt: remove old API functions

Remove old itr_xxx() API functions.

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

core: remove unused arguments from boot_init_primary_early()

Removes the now unused arguments from boot_init_primary_early().

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

core: remove unused arguments from boot_init_primary_early()

Removes the now unused arguments from boot_init_primary_early().

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Raymond Mao <raymond.mao@linaro.org>

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core: remove fdt argument from get_aslr_seed()

Removes the now ignored fdt argument from get_aslr_seed().

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

core: remove fdt argument from get_aslr_seed()

Removes the now ignored fdt argument from get_aslr_seed().

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Raymond Mao <raymond.mao@linaro.org>

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core: arm: refactor boot argument handling

Adds a C function, boot_save_args(), to as early as possible analyze and
save the needed parameters depending on the current configuration. The
parameters

core: arm: refactor boot argument handling

Adds a C function, boot_save_args(), to as early as possible analyze and
save the needed parameters depending on the current configuration. The
parameters are stored in global variables, which are then accessed by
the subsequently called functions, boot_init_primary_early(),
boot_init_primary_late(), and get_aslr_seed().

entry_a32.S now preserves {r0-r3,lr} and pass them to boot_save_args().

entry_a64.S now preserves {x0-x3} and pass them to boot_save_args() with
zero in a5.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Raymond Mao <raymond.mao@linaro.org>

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core: prefix header file guard names with __

Improves header files guard names consistency by using a __ prefix
where missing.

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

core: prefix header file guard names with __

Improves header files guard names consistency by using a __ prefix
where missing.

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

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core: fix header file guard names

Fixes header file guards macro name prefix (mostly missing occurrences)
that should reflect the file base directory sub-path where applicable.

Reviewed-by: Jens Wi

core: fix header file guard names

Fixes header file guards macro name prefix (mostly missing occurrences)
that should reflect the file base directory sub-path where applicable.

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

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core: kernel: add missing guards in time_source.h

Adds missing guards in header file time_source.h.

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

core: kernel: add missing guards in time_source.h

Adds missing guards in header file time_source.h.

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

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core: fix data abort during ftrace

With commit c10e3fa93d24 ("core: fix race in handling TA panic") the
resources of a panicked TAs are released as early as possible, including
the user space mapped

core: fix data abort during ftrace

With commit c10e3fa93d24 ("core: fix race in handling TA panic") the
resources of a panicked TAs are released as early as possible, including
the user space mapped ftrace buffer. However, the pointer to the ftrace
buffer is stored in the ts_session for quick and easy access. The ftrace
buffer is always retrieved with get_fbuf() that already have a few other
checks to see if the buffer is currently available. So add a check to
see that the TA hasn't panicked also.

Fixes: c10e3fa93d24 ("core: fix race in handling TA panic")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (vexpress-qemu_armv8a)

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core: interrupt: helper function for raise_pi, raise_sgi, set_affinity

Defines helper API functions to call .raise_pi, .raise_sgi and
.set_affinity handlers of a chip controller. Defines API functio

core: interrupt: helper function for raise_pi, raise_sgi, set_affinity

Defines helper API functions to call .raise_pi, .raise_sgi and
.set_affinity handlers of a chip controller. Defines API function
to query support of these handlers in the interrupt controller.

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

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core: interrupt: helper function interrupt_alloc_add_conf_handler()

Adds interrupt API function interrupt_alloc_add_conf_handler() to
allocate, configure and register an interrupt handler, providing

core: interrupt: helper function interrupt_alloc_add_conf_handler()

Adds interrupt API function interrupt_alloc_add_conf_handler() to
allocate, configure and register an interrupt handler, providing
interrupt type and priority.

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

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drivers: move to interrupt_call_handlers()

Removes itr_handle() in favor to interrupt_call_handlers(). This
changes updates all implemented main interrupt controller drivers that
are the GIC driver,

drivers: move to interrupt_call_handlers()

Removes itr_handle() in favor to interrupt_call_handlers(). This
changes updates all implemented main interrupt controller drivers that
are the GIC driver, the HFIC driver and Atmel SAIC driver.

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

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core: dt_driver: add dt_driver_provider_priv_data()

Implements dt_driver_provider_priv_data() to get the private data
registered with a provider. Regulator framework will use this
function to return

core: dt_driver: add dt_driver_provider_priv_data()

Implements dt_driver_provider_priv_data() to get the private data
registered with a provider. Regulator framework will use this
function to return the regulator handle associated to a regulator
provider driver.

Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: dt_driver: define DT_DRIVER_REGULATOR

Adds DT_DRIVER_REGULATOR for a regulator consumer to retrieve its
regulator device(s) from device tree information.

Acked-by: Gatien Chevallier <gatien.c

core: dt_driver: define DT_DRIVER_REGULATOR

Adds DT_DRIVER_REGULATOR for a regulator consumer to retrieve its
regulator device(s) from device tree information.

Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: add non-volatile monotonic counter interface

Adds a stubbed non-volatile monotonic counter interface with a REE FS
counter. Platforms or drivers overrides the weak functions
nv_counter_get_ree

core: add non-volatile monotonic counter interface

Adds a stubbed non-volatile monotonic counter interface with a REE FS
counter. Platforms or drivers overrides the weak functions
nv_counter_get_ree_fs() and nv_counter_incr_ree_fs_to() to provide a
non-stubbed implementation of the counter.

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

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