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zephyr/arch/arc/core/cpu_idle.S

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First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/*
* Copyright (c) 2014 Wind River Systems, Inc.
*
license: Replace Apache boilerplate with SPDX tag Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-19 09:01:01 +08:00
* SPDX-License-Identifier: Apache-2.0
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*/
Fixed file description and applied doxygen style Removed old style file description and documnetation and apply doxygen synatx. Change-Id: I3ac9f06d4f574bf3c79c6f6044cec3a7e2f6e4c8 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2015-12-04 23:09:39 +08:00
/**
* @file
* @brief CPU power management
*
* CPU power management routines.
doxygen: change comment style to match javadoc The change replaces multiple asterisks to ** at the beginning of comments and adds a space before the asterisks at the beginning of lines. Change-Id: I7656bde3bf4d9a31e38941e43b580520432dabc1 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2015-07-02 05:22:39 +08:00
*/
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
#include <kernel_structs.h>
#include <offsets_short.h>
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
#include <toolchain.h>
#include <sections.h>
Renaming include/nanokernel to include/arch Renaming the directory include/nanokernel to be include/arch, which better reflects the real nature of the directory and the contents inside. Change-Id: I2bc33ebc6715e2f0403227a558279fdf52398ade Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
2015-05-29 01:56:47 +08:00
#include <arch/cpu.h>
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
GTEXT(k_cpu_idle)
GTEXT(k_cpu_atomic_idle)
GDATA(k_cpu_sleep_mode)
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
arc: fix unaligned variables resulting in unaligned k_cpu_sleep_mode Force-align all variables defined via asm .word to ensure 4-byte alignment. The straddled_tick_on_idle_enter variable was a bool, which resolved in an one-byte quantity. Changing it to a 32-bit integer. It would have occupied 4 bytes anyway with alignment. Fixes ZEP-1549. Change-Id: If5e0aa1a75dbc73d896b44616f059d221fe191c6 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2017-01-13 05:49:58 +08:00
.balign 4
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
SECTION_VAR(BSS, k_cpu_sleep_mode)
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
.word 0
/*
doxygen: add @brief and capitalize Remove function name from comment and add @brief instead. Also capitilize first letter. Change-Id: Ib708b49bf02e5bc89b0066637a55874e659637e0 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2015-07-02 05:51:40 +08:00
* @brief Put the CPU in low-power mode
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*
* This function always exits with interrupts unlocked.
*
* void nanCpuIdle(void)
*/
arc: add nanokernel tickless idle support Modified interrupt handling and idle code to enter and exit tickless idle mode. Change-Id: I3461ab6dba30003a4317027fc50a3ba07e830015 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com> Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2015-06-10 07:46:29 +08:00
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
SECTION_FUNC(TEXT, k_cpu_idle)
arc: add nanokernel tickless idle support Modified interrupt handling and idle code to enter and exit tickless idle mode. Change-Id: I3461ab6dba30003a4317027fc50a3ba07e830015 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com> Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2015-06-10 07:46:29 +08:00
event_logger: add arc support for sleep event Jira: ZEP-53 Change-Id: I54e1a677a3d0cd5f08efefe45058115e79c062f9 Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@intel.com>
2016-05-05 00:55:33 +08:00
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
push_s blink
jl _sys_k_event_logger_enter_sleep
pop_s blink
#endif
arc: add nanokernel tickless idle support Modified interrupt handling and idle code to enter and exit tickless idle mode. Change-Id: I3461ab6dba30003a4317027fc50a3ba07e830015 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com> Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2015-06-10 07:46:29 +08:00
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
ld r1, [k_cpu_sleep_mode]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
or r1, r1, (1 << 4) /* set IRQ-enabled bit */
sleep r1
arc: Uses of .nd on various branches not wanted The .nd on a branch is WRONG if its an unconditional branch. Not needed. On conditional branches its a compiler feature that is not yet functional with ARC targets. Typical code for this compiler can use .d to put something in the delay slot of an instruction, but using .nd is probably never wanted. Change-Id: If1017c468e6e7af269ea73daeb4bc223dcc0059f Signed-off-by: Chuck Jordan <cjordan@synopsys.com>
2016-05-26 00:24:55 +08:00
j_s [blink]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
nop
/*
doxygen: add @brief and capitalize Remove function name from comment and add @brief instead. Also capitilize first letter. Change-Id: Ib708b49bf02e5bc89b0066637a55874e659637e0 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2015-07-02 05:51:40 +08:00
* @brief Put the CPU in low-power mode, entered with IRQs locked
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*
* This function exits with interrupts restored to <key>.
*
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
* void k_cpu_atomic_idle(unsigned int key)
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*/
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
SECTION_FUNC(TEXT, k_cpu_atomic_idle)
arc: add nanokernel tickless idle support Modified interrupt handling and idle code to enter and exit tickless idle mode. Change-Id: I3461ab6dba30003a4317027fc50a3ba07e830015 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com> Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2015-06-10 07:46:29 +08:00
event_logger: add arc support for sleep event Jira: ZEP-53 Change-Id: I54e1a677a3d0cd5f08efefe45058115e79c062f9 Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@intel.com>
2016-05-05 00:55:33 +08:00
#ifdef CONFIG_KERNEL_EVENT_LOGGER_SLEEP
push_s blink
jl _sys_k_event_logger_enter_sleep
pop_s blink
#endif
kernel: add k_cpu_idle/k_cpu_atomic_idle() nano_cpu_idle/nano_cpu_atomic_idle were not ported to the unified kernel, and only the old APIs were available. There was no real impact since, in the unified kernel, only the idle thread should really be doing power management. However, with a single-threaded kernel, these functions can be useful again. The kernel internals now make use of these APIs instead of the legacy ones. Change-Id: Ie8a6396ba378d3ddda27b8dd32fa4711bf53eb36 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-12-15 02:04:36 +08:00
ld r1, [k_cpu_sleep_mode]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
or r1, r1, (1 << 4) /* set IRQ-enabled bit */
sleep r1
j_s.d [blink]
seti r0