Updating readme files with trademark information.

Change-Id: Id5313510777b771231f42701faff1da93765deda

Added: Weak linked symbols for locking if RTOS overrides
Added: Semaphore Producer (release a reserved driver)
Added: Semaphore Consumer (all drivers reserved and waiting for returned driver)
Added: Mutex protect thread sensitive driver access
Added: Weak linked symbols for yielding & resuming thread/task while waiting for IRQ
Added: static inline function of ethosu_invoke_v2(...) for backwards compatibility

Change-Id: If415a73b01b2357b31bb6da86f3038344c4245c6

---ethosu_driver---
Modified: Declarations for the driver interfaces to support multiNPU (takes *drv)
Added: ethosu_register_driver(...) to allow for a specific NPU driver to be instantiated
Added: ethosu_deregister_Driver(...) to allow for a specific NPU driver to be de-registered
Added: ethosu_reserve_driver(...) to reserve & return the first NPU driver instance available
Added: ethosu_release_driver(...) to release a specific NPU driver instance and make it available again
Added: *registered_drivers - A  static linked list of drivers ready be used

---ethosu_pmu---
Modified: Declarations for pmu interfaces to support multiNPU (takes *drv)

---ethosu_device---
Modified: Resolved a circular include dependency (Remove include and add ETHOSU_PMU_NCOUNTERS macro)

Change-Id: Iede41cd41bb0d5d483bd9d929d1b6c9ca5d3c48e

* Allow driver to run cmdstreams that are compiled
  for older arch versions

Change-Id: Ia49fc6c34b118bd91ce24bd0c34d95abc4c25d6a
Signed-off-by: Douglas Troha <douglas.troha@arm.com>

If NPU power is guaranteed always on parts of driver setup can be omitted to reduce the number of cycles required to setup the NPU drivers.
By enabling dev_power_always_on, the setup cycles are reduced by approx. ~50%. (4462->2238 in prologue, 1167->642 in epilogue)

Change-Id: I56d380c2571fedbc8888fb7c00fce0e4320f7fb7

Change-Id: I3a8b88fb63aee8a4741ab1ca47bc49c663479e21

Using a cpu without proper interrupt handling is not really usefull in
this context, so remove that option.

Change-Id: Ie94fd9025c918eef72272e14ad5b0a95ea7dc4a4

Change-Id: Ia22b2934b4c85e3c480931c8b92608365351a877

The addition of init_v3 accidentely changed default values for soft
resetting Ethos-U. Restore the default parameters to non-secure, user
mode for init_v1 and init_v2 and also make sure to check return value
from ethosu_soft_reset.

Change-Id: If7377f11ad1db7ff988fdcba03320a54e6e0c0c1

Change-Id: I8ca309ea4e5885865d5c9cf848500f45f83e08a2

Implement a weak linked function to handle the data cache.
If the specific device is implementing a data cache the function should
be overriden with device specific implementation of the flush/invalidate
functions to make sure that the cache is properly maintained with
regards to the NPU DMA transaction.

Change-Id: I175644ef37bee62cc77d789d2b7bc3073e72ea5a

Return error if the fast memory area would be smaller than
the spilling tensor.

Change-Id: Ica89a3a933a3317a346e3479f5209ddc735d1c91

Change-Id: Id96dd7824352992c07b5fa3ce8a39a84926557a8

The low and high PMU cycle counter registers were not combined
correctly.

Change-Id: I6b311b33527557f459fd87ebd5d4d3228625106a

Storing PMU counters in shadow variables, in case the PMU was powered
off or soft reset.

Change-Id: I64ccf3fb6195f9be2d8315891ec612bb75404885

The ETHOSU is soft-reset only if the previous job failed or if
the current privilege level is not user or if the current security
level is not secure.

Change-Id: Id10b96058d67805d179ac693537606d55e10379b

GCC > 7 warns that the selected type of the enum makes the comparisson
unneccesary. Since the selected enum fits in an integer, the input
parameter is casted to an integer to make the comparison valid and
asserts that the enum is within valid enum values (which we know are
monotonically growing).

Change-Id: Id81799e2ac43a83b998541ce7531d2039202cd62

Avoid using NULL to initialize and compare with for integer variables.

Change-Id: I1c370a9bb213dc93db845149d123915273411551

Avoid casting pointers to integer types larger than the pointer itself,
and let assignement handle the conversion.

Change-Id: Icfd2401617f2cd0fc96c2a6a9ad8d2d8bec94c55

Change-Id: I591284c1b06b660fc303bb5b4fa282d403ee42c0

GCC and armclang uses different uint32_t types which makes it impossible
to use standard format specifiers to satisfy both compilers. Move to
inttypes.h macros to handle it in a portable way.

Change-Id: If85e1148d302b64660af66d8f462efba9ac5d86b

Change-Id: Ia2a0ac76fca0fd12efee305a2ea2ebd5b2055b2d

Change-Id: Ie4186f5ab881d5c13021299404322ff582180d26

Add information how to contribute and how to report security incidents.

Change-Id: I7946e66b30c4e338ffa5a279b5d769a764c34f0f

Change-Id: I54a1927fef998bc97f5507f2de9faf7d4a7960f5

Avoid writing unintentional bits when using stack allocated register
structs.

Change-Id: I427f8449f15a8118883cfd7214aabe30dd6372d6

Allow user to define a base pointer offset, if the CPU and the NPU have
address spaces offseted from each other.

Soft reset NPU before every inference.

Added log prints.

Change-Id: I98a746d20dc780fefa23ad68816f5ba2ba2e6c6e

Change-Id: I0f127f7460be2a5d2eda5be2868c91f58cac03c0

Bhavik Patel authored Jul 27, 2020 and Kristofer Jonsson committed Aug 12, 2020

Change-Id: I44d6220ac488d2e67c0b6a8b005c8da0b9a67011

Change-Id: Ia984092db29cc5f1294ecdcf5c2b6b744c6d32b2

Change-Id: I84754f316ce940917516cb7f5c59189f523d4095

Bhavik Patel authored Jul 15, 2020 and Tim Hall committed Jul 22, 2020

This includes resetting the Ethos-U and restoring the
previosuly saved PMU configuration (if any).

Change-Id: Id952fb6fef513468952b6a469e857510f8c0214c

The driver can log at one of the following levels: 0=emerg,
1=alert, 2=crit, 3=err, 4=warning, 5=notice, 6=info, 7=debug.

The logs at or below the set level are printed whereas
the higher level logs are not printed.

Change-Id: I05a498d4c8c78112207187d9dceaa2386b138c5d

Change-Id: I1145834000ff81d6e497a8fa77bf997478a80372

This change is done as a prerequisite to be able to set
base address for NPU through ethosu_init(). So instead of using
a mamory mapped struct we use the same functions to read/write
PMU registers as the rest of the ethos-u driver.

Change-Id: Ie1f6e6af4627cbe9375e2b2d079ba8017b6294d3

  -

TICKET: MLEMBED-1616
Signed-off-by: Rakesh Gangarajaiah <rakesh.gangarajaiah@arm.com>
Change-Id: Iea9e6869a1855b42bd8a0fda2986d099d0479a09

Bit [2] in CMD register is used to enable clock off using
clock q-interface and enable the master clock gate. Bit [3] is
used to enable power off using power q-interface.

The clock_q_enable bit is set when putting the Ethos-U into run
state.

The power_q_enable bit is set to 0 when running the command stream
and set to 1 after command stream has finished running.

Change-Id: Id9d1405376508e2af2ec0ddc2ebae8fb6c2f5cba

* Includes npu_active event

Signed-off-by: Douglas Troha <douglas.troha@arm.com>
Change-Id: I2346707c26b7c3709bb844c7b21365d714e9a089

Change-Id: I73c612746ca678d32d3dec3e1c5619ee1077c012

* Arch patch versions should be backward compatible

Signed-off-by: Douglas Troha <douglas.troha@arm.com>
Change-Id: I1b0d292d0885af90d5b39f2239e020af9181008b