Commit Graph

486 Commits

Author SHA1 Message Date
Anas Nashif 7cac3b9625 arch: arc: arm: sys_thread_self_get -> k_current_get
Change-Id: Iaa01b0d8733d76888524cfd258bacbd9c11142de
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-11-10 18:52:51 +00:00
Andrew Boie 56f561e15e arches: use new kernel APIs
Change-Id: I4b6f5264d5295ebf4278991a1f4e2141bef6602f
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-11-09 20:49:40 +00:00
Andrew Boie 0b474eef9c kernel: deprecate old init levels
PRIMARY, SECONDARY, NANOKERNEL, MICROKERNEL init levels are now
deprecated.

New init levels introduced: PRE_KERNEL_1, PRE_KERNEL_2, POST_KERNEL
to replace them.

Most existing code has instances of PRIMARY replaced with PRE_KERNEL_1,
SECONDARY with POST_KERNEL as SECONDARY has had a longstanding bug
where the documentation specified SECONDARY ran before the kernel started
up, but actually ran afterwards.

Change-Id: I771bc634e9caf7f17dbf214a270bc9967eed7d32
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-11-09 17:59:44 +00:00
Benjamin Walsh 3cc2ba9f9c kernel: add __ASSERT() for thread priorities
Verify the thread priorities are within the bounds when starting a new
thread and when changing the priority of a thread.

Change-Id: I007b3b249e4b80235b6439cbee44cad2f31973bb
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 20:27:31 -05:00
Allan Stephens f48f263665 kernel: Rename USE_FP and USE_SSE symbols
Symbols now use the K_ prefix which is now standard for the
unified kernel. Legacy support for these symbols is retained
to allow existing applications to build successfully.

Change-Id: I3ff12c96f729b535eecc940502892cbaa52526b6
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-11-07 18:52:31 +00:00
Jorge Ramirez-Ortiz 27ecd5d8f3 drivers: flash: SoC KSDK
This KSDK flash shim driver supports the device in the FRDM K64F
platform (enabled with this commit).

WARNING: the driver disables the system interrupts for potentially
long periods of time. This is required to avoid Read-While-Write
issues since most platforms run in XIP mode.

For more detailed information see the link below:
http://cache.freescale.com/files/32bit/doc/app_note/AN4695.pdf

Change-Id: I70f8d09080251033ce2f45be0c2eb95c19fded08
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
2016-11-07 18:43:16 +00:00
Maureen Helm 33ee93d7dd serial/uart_k20: Fix instance source clock frequencies
The uart_k20 serial driver incorrectly assumed that all instances of the
UART peripheral are driven by the system clock, when actually some
instances are driven by the bus clock (which usually runs at half the
system clock). This caused incorrect baud rate calculations for UART
instances driven by the bus clock (UART2-4).

Change-Id: I38041781cdee146912bb5167e7c71d6416b966b5
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
2016-11-04 23:00:04 +00:00
Andrew Boie 3a6bd2a552 arm: remove support for legacy kernels
Change-Id: I93c2dd6bf7286f50cb2702a94cbc85dc3bdee807
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-11-04 22:56:18 +00:00
Piotr Mienkowski dccec68e0f arm: add missing atomic operations selection for Cortex-M7 processor
This change is required to support unified kernel.

Change-Id: I47bd644239eb3e624c7a5cb456eedad5aca79e8e
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
2016-11-04 17:46:03 -05:00
Benjamin Walsh 1bfa7e3d93 unified/arm: fix missing setting of default _Swap() return value
The unified kernel expect the default return value from a _Swap() call
to be set to -EAGAIN by the architecture code. Cortex-M3/M4 does this in
the SVC call handler, and it was missing from the Cortex-M0/M0+ before
pending PendSV.

Change-Id: I3316901186ab409f49043eb4f1972c4b0dd9a4a2
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-04 17:51:14 +00:00
Gil Pitney e8b43cbc81 cc3200: Add a UART driver (polled and interrupt modes)
The pinmux configuration is done during board initialization.

This was validated using the following Zephyr apps:
- samples/hello_world
- samples/philosophers
- samples/drivers/uart
- samples/shell

UARTA0 is currently supported.

Change-Id: I85727c622d4d42183cc9f2f8b43d653e245dd17e
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
2016-11-04 14:53:33 +00:00
Gil Pitney 385c7be8af cc3200: Add support for the TI CC32xx SoC Series
Initial support is for the CC3200 SoC, comprising a network coprocessor
and Cortex-M4 MPU.

This leverages the CC3200 SDK driver peripheral library, installed
separately, or built from ext/hal/.

Jira: ZEP-1109

Change-Id: I508afc8596c165b309a4ec641c39abadc779eea3
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
2016-11-04 09:38:50 +00:00
Maureen Helm 516d1286a6 k64: Move driver instance defconfigs to boards
The k64 SoC has multiple instances of many peripherals, but which
instances can actually be used depends upon the board design and pinmux
configuration.

Move all instance-specific default driver configurations from the SoC to
the boards (frdm_k64f and hexiwear_k64). Default driver selection
remains in the SoC (e.g., enable the KSDK I2C driver when I2C is
enabled).

This paves the way to support different driver defaults for the
frdm_k64f and hexiwear_k64 boards, but it does not yet change any of the
default values; it only changes where the default values get set.

Change-Id: Id9ed898762eb400ecefeac91ae4dce66da05622d
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
2016-11-03 22:10:36 -05:00
Allan Stephens a3f3de3741 unified: Rename ESSENTIAL to K_ESSENTIAL
Adds standard prefix to symbolic option that flags a thread
as essential to system operation.

Change-Id: Ia904a81ce343fdd1cd44caaaeae641d822777f9b
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-11-04 00:47:08 +00:00
Erwan Gouriou f595df3755 stm32f4: Enable STM32Cube SDK support on stm32f4 family
Enable HAS_CUBE config flag on stm32f4 family soc.h is updated to
include minimum include files from ext/hal/stm23cube

Change-Id: I35a8c33aab777167ee7029edc1b7a4f6d21fccd8
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-11-03 20:29:08 +00:00
Erwan Gouriou dc70dc0977 stm32f1: Enable STM32Cube SDK support on stm32f1 family
Create HAS_CUBE config flag to control activation of STM32Cube support.
Generate fitting compilation options for STM32Cube in
/ext/hal/stm32cube/Makefile soc.h is updated to include minimum include
files from ext/hal/stm23cube

Change-Id: If58ce0a4fdb7fbf5f171dfe5f1f8eb75126a8313
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-11-03 20:29:07 +00:00
Erwan Gouriou eed678612b clock_control: have FLASH_BASE compatible with ST CMSIS files
In ST CMSIS files, FLASH_BASE does not mean base address of FLASH register
Instead FLASH_R_BASE is used.
stm32f1 clock control driver is updated to be compatible with this naming.

Change-Id: Ic4fb49c60c392e15fd12c69266baf4c686bd343b
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
2016-11-03 20:29:07 +00:00
Erwan Gouriou 39f7adc41d stm32f4: Adapt CONFIG_SOC to STM32Cube values
STM32Cube uses SoC defines made to reflect HW heterogeneity that
should be taken into account by SW.
Aim of this commit is to adapt values used by Zephyr to the same
diversity. This will help create new SoC values only when justified
by a real hardware difference that should be taken into account
by software.
For instance, for SoC stm32f401re following define is used:
*STM32F401xE
Which means:
*Same SW could be used on STM32F401RE and STM32F401CE:
    same CONFIG_SOC could be used
*Different SW should be used on STMF401RE and STM32F401RC:
    different CONFIG_SOC should be used
This change focuses on stm32f4xx series.

Change-Id: I56ff4d1815d09747cf722385532eb2dcbdf37b44
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
2016-11-03 20:29:06 +00:00
Erwan Gouriou df5a2af34b stm32f1: Adapt CONFIG_SOC to STM32Cube values
STM32Cube uses SoC defines made to reflect HW heterogeneity
that should be taken into account by SW.
Aim of this commit is to adapt values used by Zephyr to the same
diversity. This will help create new SoC values only when justified
by a real hardware difference that should be taken into account
by software.
For instance, for SoC stm32f103rb following define is used:
*STM32F103xB
Which means:
*Same SW could be used on STM32F103RB and STM32F103VB:
    same CONFIG_SOC could be used
*Different SW should be used on STMF103RB and STM32F103R4:
    different CONFIG_SOC should be used
This change focuses on stm32f1xx series.

Change-Id: I5ecfaa52952d04421b27b5e74fb71b4fc108b662
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
2016-11-03 20:29:06 +00:00
Amit Kucheria fdfa958d5f boards: stm32f4: Extract common config options
Move common config options one level up to try to simplify the per-board
defconfig

Change-Id: I3d80fa494050634d0f877af2015b01b85df20d1d
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-28 18:58:06 +00:00
Amit Kucheria eb0f8ab9fc boards: 96b_carbon: Add support for 96boards Carbon board
Add support for the STM32F401 chip on the board

Change-Id: I96c0799f3658ecea096fa5971bce9faf21919ee1
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-28 18:58:06 +00:00
Ricardo Salveti 1c1bd9a018 pinmux: stm32: add support for STM32F4
STM32F401 allows for upto 16 alternate functions on each pin.

Change-Id: Ib1c14fd31abaa2b05a5ab0f7bd1b4a4748f10f84
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-28 18:58:04 +00:00
Ricardo Salveti cf59106433 gpio: stm32: add support for STM32F4
Implements MCU-specific GPIO input interrupt integration.  Added
definition of System configuration controller as well as its needed by
the GPIO code.

The SYSCFG controller is used for system-specific configuration such as:
 - remap the type of memory accessible at address 0x00000000
 - manage the external interrupt line connection to GPIOs
 - configure the I/O compensation cell

Change-Id: Id2ebfbd1b21e77be76406d1cd6cd5d4989e9e2fa
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-28 18:58:03 +00:00
Ricardo Salveti 3580a6bcec clock_control: stm32f4x: introduce driver for STM32F4x RCC
Based on the STM32F10x driver. Removing old code as we need to use the
bus number when dealing with 4 possible peripherals.

Change-Id: Id0263aa008e9b039ff9a00339e5622e289ffdf99
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-28 18:58:03 +00:00
Amit Kucheria 95e7fb6c98 arm: st_stm32: Add support for STM32F4x SoC family
This patch adds support for the STMicroelectronics STM32F4x family in the
STM32 MCU line. Configuration is included for the STM32F401RE MCU.

Acknowledgements to Pawel Wodnicki's earlier submission from February that
was used as a starting point for this port. In the end, we rewrote all of it.

Change-Id: I9797c282ac3c0cc66a63b9d34821de95df537ef6
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-28 18:58:02 +00:00
Marcus Shawcroft c49ad10273 soc:mk64f12: Enable RANDOM_KSDK driver by default if RANDOM_GENERATOR enabled.
The mk64f12 provides RNGA hardware. Follow the implementation pattern
used by various other driver classes and enable the RANDOM KSDK shim
driver if the RANDOM driver is enabled.

Change-Id: I46bdf16cf1c48937011fb1b0e4c292615efd4c95
Signed-off-by: Marcus Shawcroft <marcus.shawcroft@arm.com>
2016-10-28 12:35:18 +00:00
Benjamin Walsh b452817b67 kernel: merge _IS_IN_ISR() with _is_in_isr()
They were the same, standardize on the lowercase one.

Change-Id: I8bca080e45f3e0970697d4451e468b9081f96f5f
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-10-27 21:45:03 +00:00
Amit Kucheria 9cbd41ab13 arm: defconfig: Remove platform-specific options
SOC_TI_LM3S6965 and UART_STELLARIS are platform-specific, remove from
arch/arm/defconfig.

Change-Id: I3b37bc2ddfabb1da4e7538b5ab0e553fb2464584
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
2016-10-27 15:00:47 +00:00
Ricardo Salveti a9f2061dfb gpio: stm32: introduce alternative function config
STM32F4 requires the alternative function config to be set, so just
initialize that as part of the gpio configure call.

Change-Id: I33a4a8efec59c5ebe7dc3f3580f0dd2bf7ded7f4
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
2016-10-27 14:48:43 +00:00
Allan Stephens 743bdb8143 unified: Enable handling of thread options for static threads
Change-Id: I51d2d9cfa0eeb5f974a6cf1db32406399ef57418
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-10-27 08:36:14 -05:00
Marcus Shawcroft abb99c377d soc/stm32f1: Enable IWDG_STM32 dependent on WATCHDOG
The STM32F1 range all have the independent watchdog, enable the driver
by default if CONFIG_WATCHDOG is enabled.

Change-Id: I3869884dc51c56194367b46007c87f6cee699689
Signed-off-by: Marcus Shawcroft <marcus.shawcroft@arm.com>
2016-10-26 20:51:08 +00:00
Piotr Mienkowski 378fa6598f arch: Add support for Cortex-M7 processor
All M7 features common to M3/M4 are working. New features like Tightly
Coupled Memory (TCM) are not yet supported.

Change-Id: I5f7b292e70843aec415728f24c973bb003014f4b
Jira: ZEP-977
Signed-off-by: Piotr Mienkowski <Piotr.Mienkowski@schmid-telecom.ch>
2016-10-26 12:58:40 -05:00
Allan Stephens 4aef71b9f6 unified: Finish adding thread monitoring support
Existing code wasn't removing a thread from the kernel's list
of active threads if the thread terminated or aborted. (It did
remove it if the delayed starting of a thread was cancelled.)

Change-Id: Icc97917e33765696480d0e9bf31e882ef555d095
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-10-26 17:03:13 +00:00
Allan Stephens 2220f25f0a kernel: Standardize thread monitoring initialization
Gets rid of unnecessary THREAD_MONITOR_INIT() macro, to be
consistent with the approach taken by _thread_monitor_exit().

Aligns x86 code with the approach used on other architectures.

Revises the associated comments and removes unnecessary
doxygen tags.

Change-Id: Ied1aebcd476afb82f61862b77264efb8a7dc66c9
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-10-26 17:03:12 +00:00
Allan Stephens 92e75040a2 kernel: Revise thread monitoring exit API naming
Renames _thread_exit() to _thread_monitoring_exit() to make
its purpose clearer. Revises the associated comments and
removes unnecessary doxygen tags.

Change-Id: I010a328d35d2d79d2a29b9d0b6c02097bb655989
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
2016-10-26 17:03:12 +00:00
Carles Cufi 33d17497d2 drivers: uart_nrf5: Use MDK baudrate divisor constants
The baudrate calculation present in set_baudrate() is
causing the UART to emit inital bytes incorrectly, for a
reason currently unknown, but directly related to the fact
that __aeabi_uldivmod is being invoked.
Since the nRF5x Product Specifications do not provide a
standard formula to calculate baudrates and instead list
a predefined set of divisor values, we opt here to use the
official values and remove the attempt at calculating them
manually.

Change-Id: Ic3ff42ea6d065e9a1d26a5350ce5bf5ad661160a
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2016-10-25 18:40:56 +00:00
Kumar Gala bbf736cf6e build: refactor kernel hex build to be common
Several platforms utilize a ihex image format.  Rather than
duplicating the build bits in everyones makefile, pull it into the
toplevel makefile so we all share it.

Change-Id: I9097b06e7e386a69ce6ab4d4e4d56cc776adfec2
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2016-10-24 10:59:22 -05:00
Ricardo Salveti 1dd18c3f92 arm: Add initial support for Nordic Semiconductor nRF51 series
Still missing a working timer driver, as SysTick is not really available
in this SoC series (enabled to avoid build issues, but not used).

Jira: ZEP-784

Change-Id: Ie1c8e6c5e8955ee7f260ce013f4451f9215f3457
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-22 01:25:55 +00:00
Ricardo Salveti 69b9451af1 arm/nordic: use a common header for the nrf51/nrf52 SoC families
Integrating the IRQ definitions for both nRF51 and nRF52, and defining
the set of IRQ values that are common to both.

Also switch the controller, uart and clock drivers to use the common
header definitions.

Change-Id: Id6816d7a97720896cfe4df83656fb8b1f8fb01fa
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-22 01:25:54 +00:00
Ricardo Salveti ffacae20d0 arch/arm: add initial support for Cortex-M0/M0+
Not disabling SysTick as it is optional by the spec.

SVC not used as there is no priority-based interrupt masking (only
PendSV is used).

Largely based on a previous work done by Euan Mutch <euan@abelon.com>.

Jira: ZEP-783

Change-Id: I38e29bfcf0624c1aea5f9fd7a74230faa1b59e8b
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-22 01:25:53 +00:00
Anas Nashif debf5bfe63 pinmux: k64f: remove unused Kconfig section
Those options are not being used anywhere, so remove them and avoid some
confusion.

Change-Id: Ia3767dbd2432851dfae4b1e996f02ed1b2450505
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-10-18 20:14:52 +00:00
Vinayak Chettimada 5732ae1ae0 arm: nordic_nrf5: Select clock control for BLE controller
Bluetooth controller implementation requires the low power
oscillator for radio time space scheduling and as sleep
clock; the high frequency oscillator as the active clock.

For Nordic Semiconductor's nRF5 Series SoC's select the
NRF Clock peripheral when BLUETOOTH_CONTROLLER is selected
in Kconfig build.

Jira: ZEP-897

Change-id: I6f99e90b3485e757be61e91c749e485dd0cfdaba
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2016-10-18 13:03:42 +00:00
Marcus Shawcroft 87077727bf eth: Add KSDK ENET driver.
Provide a network driver wrapped around the KSDK ENET and PHY
drivers.

The driver performs one shot PHY setup.  There is no support for PHY
disconnect, reconnect or configuration change.  The PHY setup,
implement via KSDK contains polled code that can block the
initialization thread for a few seconds.

There is no statistics collection for either normal operation or error
behaviour.

Origin: Original

Change-Id: Ia0f2e89a61348ed949976070353e823c178fcb24
Signed-off-by: Marcus Shawcroft <marcus.shawcroft@arm.com>
2016-10-16 09:57:35 +00:00
Benjamin Walsh b4b108de4d unified: rename sched.h to ksched.h
Build breaks when enabling CONFIG_NEWLIB_LIBC because it has its own
sched.h file.

This is a bad symptom of a greater issue: the build system passes many
'-I<path>' options to the compiler, and that allows including header
files by simply specifying their names (when located somewhere else than
<zephyr>/include/) and can cause clashes when several files in different
locations have the same name, like in this case.

Fixes ZEP-1062.

Change-Id: I81d1d69ee6669a609cd0c420b1b8f870d17dcb67
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-10-14 20:49:36 +00:00
Ricardo Salveti b0e0c51b47 arm: move atomic operations selection to the Cortex-M Kconfig
Builtin might not be available for ARMv6 (Cortex-M0/M0+) depending on
the toolchain used (not available by Zephyr's SDK GCC), so move the
atomic operations selection to the Cortex-M family Kconfig file.

Change-Id: I20a5a0c5fdd2bcff2d304139f5a7e8502fdb1cb3
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-11 20:47:49 +00:00
Benjamin Walsh 35497d6c5e unified: cache the next thread to run
When adding a thread to the ready queue, it is often known at that time
if the thread added will be the next one to run or not. So, instead of
simply updating the ready queues and the bitmask, also cache what that
thread is, so that when the scheduler is invoked, it can simply fetch it
from there. This is only done if there is a thread in the cache, since
the way the cache is updated is by comparing the priorities of the
thread being added and the cached thread.

When a thread is removed from the ready queue, if it is currently the
cached thread, it is also removed from the cache. The cache is not
updated at this time, since this would be a preemptive fetching that
could be overriden before the newly cached thread would even be
scheduled in.

Finally, when a thread is scheduled in, it now becomes the cached thread
since the fact that it is running means that by definition it was the
next one to run.

Doing this can speed up considerably some context switch times,
especially when a thread is preempted by an interrupt and the same
thread is scheduled when the interrupt exits.

Change-Id: I6dc8391cfca566699bb9b217eafe6bc6a063c8bb
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-10-10 21:27:31 +00:00
Anas Nashif e05fa64f4c frdm_k64: spi: fixed wrong kconfig used in driver
Change-Id: I43f31562cdfa0b722907e5c6018e3e56d141ed4f
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-10-10 21:26:30 +00:00
Benjamin Walsh fc59e5b584 unified/arm: fix saving of registers in __pendsv()
The unified kernel calls a function (_get_next_ready_thread) to fetch
the next thread to run: it thus must save caller-saved registers that
are expected to hold a value before calling such function.

The callee-saved registers are available after saving them in the
outgoing thread's stack, so use some of those instead to reduce the
number of registers to save before calling _get_next_ready_thread. Also,
save caller-saved registers in callee-saved registers instead of on the
stack to reduce memory accesses.

This issue did not show up previously, probably because
_get_next_ready_thread did not use the regsiters that had to be saved,
but an upcoming optimization to that function stomps on them.

Change-Id: I27dcededace846e623c3870d907f0d4c464173bf
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-10-07 22:51:11 +00:00
Ricardo Salveti 1450f7bae4 arm: remove exc_wrapper.S
Not used anymore as the support for dynamic IRQs was removed by
commit 844e212.

Change-Id: I624bbd777b2dbcbf905cedc61e63cef21e8a0bce
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
2016-10-07 14:40:17 +00:00
Fabien Parent f52baa15fb stm32: make SRAM/FLASH base address generic to soc
Move SRAM_BASE_ADDRESS and FLASH_BASE_ADDRESS to Kconfig.soc since
it will most likely be the same values for all STM32 socs.

Change-Id: I682dc441e34155a19a4f90757707008ef299e9d4
Signed-off-by: Fabien Parent <fparent@baylibre.com>
2016-10-05 18:33:21 +02:00