RTEMS 7 Embedded Realtime Operating System

The Real-Time Executive for Multiprocessor Systems or RTEMS is an open source Real Time Operating System (RTOS) that supports open standard application programming interfaces (API) such as POSIX. It is used in space flight, medical, networking and many more embedded devices using processor architectures including AARCH, ARM, PowerPC, SPARC, Intel, RISCV, Microblaze and more (a full list is provided at the end).

This release directory contains the source code for the RTEMS 7.0-rc1 operating system and tools. All the documenation provided in HTML and PDF formats.

Please drop by our Discord server (https://www.rtems.org/discord) and let us know how you are using RTEMS. We love hearing about user projects.

RTEMS Web Sites

Home	https://www.rtems.org/
Download	https://ftp.rtems.org/pub/rtems/releases
Docs	https://docs.rtems.org/
Developer	https://gitlab.rtems.org/
Discord	https://www.rtems.org/discord
Lists	https://lists.rtems.org/

Release Files

7.0-rc1	Top level directory
README.txt, `index.html`	This document
contrib	Directory contains extra release related files
docs	The generated RTEMS documentation
sources	Source code for this release
rtems-7.0-rc1-release-notes HTML	RTEMS Release notes
rtems-7.0-rc1-release-notes.pdf	PDF RTEMS Release notes
rtems-7.0-rc1-release-notes.json.xz	RTEMS Release notes data (JSON)
sha512sum.txt	The SHA512 checksums for this directory

Source Downloads	RTEMS Source Code
rtems-7.0-rc1.tar.xz	RTEMS kernel
rtems-source-builder-7.0-rc1.tar.xz	RTEMS Source Builder
rtems-deployment-7.0-rc1.tar.xz	RTEMS Deployment
rtems-tools-7.0-rc1.tar.xz	RTEMS Tools
rtems-docs-7.0-rc1.tar.xz	RTEMS Documentation source
rtems-libbsd-7.0-rc1.tar.xz	RTEMS LibBSD
rtems-lwip-7.0-rc1.tar.xz	RTEMS LwIP
rtems-net-legacy-7.0-rc1.tar.xz	RTEMS Legacy Networking
rtems-net-services-7.0-rc1.tar.xz	RTEMS Networking Services
rtems-examples-7.0-rc1.tar.xz	RTEMS Examples
sources	All source code for this release
sha512sum.txt	SHA512 checksums for the sources directory

RTEMS Documentation

Online RTEMS 7.0-rc1 Documentation

The generated documentation packages can be found in the docs directory.

The following manuals are available as compressed HTML tar files or PDF:

RTEMS User Manual

RTEMS C User Manual

RTEMS POSIX User Manual

RTEMS Software Engineering Manual

RTEMS Networking User Manual

RTEMS Shell User Manual

RTEMS Doxygen

Quick Guide to Building

For new user the Quick Start in the User Manual contains a details Quick Start guide. Download the User Manual:

https://ftp.rtems.org/pub/rtems/releases/7/rc/7.0-rc1/docs/rtems-7.0-rc1-user.pdf

and follow the instructions in the Quick Start section. If are familiar with RTEMS or just want to get going the following steps will download the RTEMS Source Builder:

cd
mkdir -p development/rtems
cd development/rtems
wget https://ftp.rtems.org/pub/rtems/releases/7/rc/7.0-rc1/sources/rtems-source-builder-7.0-rc1.tar.xz
tar Jxf rtems-source-builder-7.0-rc1.tar.xz
cd rtems-source-builder-7.0-rc1/rtems

To build the tools for the ARM architecture:

../source-builder/sb-set-builder \
  --prefix=$HOME/development/rtems/7.0-rc1 \
  7/rtems-arm

To build the tools, kernel and all packages for the Beagleboneblack:

../source-builder/sb-set-builder \
  --prefix=$HOME/development/rtems/7.0-rc1 \
  bsps/beagleboneblack

If you encounter a problem please drop by our Discord server (https://www.rtems.org/discord) or port to https://users.rtems.org/.

If you find a bug please raise an issue at https://gitlab.rtems.org/rtems/

RTEMS 7.1 Release Notes

RTEMS Improvements

In this section, we discuss public API level changes as well as improvements to the implementation of those API routines.

Public API changes usually fall into one of the following categories:

Addition of new methods
Modifications to prototypes
Deletion of obsoleted methods

Implementation improvements usually fall into one of the following categories:

Algorithm improvements in execution time or memory usage
Critical section reduction

API Changes

The value returned by rtems_task_get_priority() is 0 for tasks that are scheduled with deadlines using the EDF, CBS, and EDF SMP schedulers.

API Additions

API Implementation Improvements

API Deprecations

API Removals

set_vector() was removed. Use rtems_interrupt_handler_install() instead.
TBD

Configuration Changes

Configuration changes:
- The EDF, CBS, and EDF SMP schedulers now use the CONFIGURE_MAXIMUM_PRIORITY option to determine the valid priority range. Previously the range was fixed as [0, INT_MAX]. The default is now [0, PRIORITY_DEFAULT_MAXIMUM] consistent with other schedulers, where PRIORITY_DEFAULT_MAXIMUM typically is 255.
New configuration options:
- TBD
Renamed configuration options:
- TBD
Removed configuration options:
- TBD

Source Builder

All build sets depending on github.com, git.rtems.org, and devel.rtems.org have been migrated to use the appropriate resources on gitlab.rtems.org.

RTEMS Shell Improvements

The following improvements were made to the RTEMS Shell:

General

The obsolete libmisc/serdbg was removed. Use libdebugger instead. This functionality was not built as part of the 5 release series in anticipation of its removal.
Add setup instructions for NixOS to users guide.

Architectures

Removed obsoleted architectures:

Blackfin (bfin)
Lattice Mico 32 (lm32)
SPARC64
SuperH (sh)
V850

Obsoleted architectures:

BSPs and Device Drivers

General
- TBD
New Architectures
- TBD
New BSPs
- arm/efm32gg11
Significant updates to existing BSPs
- ARCH/BSP: TBD
Removal of obsoleted BSPs
- bfin/TLL6527M
- bfin/bf537Stamp
- bfin/eZKit533
- lm32/lm32_evr
- lm32/lm32_evr_gdbsim
- lm32/milkymist
- m68k/gen68302
- m68k/csb360
- m68k/gen68340
- m68k/gen68360
- m68k/gen68360_040
- m68k/pgh360
- m68k/mcf5206elite
- m68k/mcf52235
- m68k/mcf5225x
- m68k/mrm332
- m68k/mvme147
- m68k/mvme147s
- m68k/mvme162
- m68k/mvme162lx
- m68k/mvme167
- m68k/ods68302
- sparc64/niagara
- sparc64/usiii
- sh/gensh1
- sh/gensh2
- sh/gensh4
- sh/simsh1
- sh/simsh2
- sh/simsh2e
- sh/simsh4
- v850/v850e1sim
- v850/v850e2sim
- v850/v850e2v3sim
- v850/v850esim
- v850/v850essim
- v850/v850sim
Obsoleted BSPs
- powerpc/virtex
Drivers
- TBD

Debugger Improvements

Architectures and BSPs

Architectures: 13
BSP Families: 74
BSPs: 193

aarch64	families:6 bsps:14
a53_ilp32_qemu	a53
a53_lp64_qemu	a53
a72_ilp32_qemu	a72
a72_lp64_qemu	a72
raspberrypi4b	raspberrypi
xen	xen
versal_aiedge	xilinx-versal
versal_qemu	xilinx-versal
versal_vck190	xilinx-versal
zynqmp_apu	xilinx-zynqmp
zynqmp_apu_ilp32	xilinx-zynqmp
zynqmp_cfc400x	xilinx-zynqmp
zynqmp_qemu	xilinx-zynqmp
zynqmp_qemu_ilp32	xilinx-zynqmp

arm	families:28 bsps:83
altcycv_devkit	altera-cyclone-v
atsamv	atsam
beagleboardorig	beagle
beagleboardxm	beagle
beagleboneblack	beagle
beaglebonewhite	beagle
csb336	csb336
csb337	csb337
csb637	csb337
kit637_v6	csb337
edb7312	edb7312
efm32gg11	efm32gg11
fvp_cortex_r52	fvp
gumstix	gumstix
imx7	imx
imxrt1052	imxrt
imxrt1166-cm7-saltshaker	imxrt
lm3s3749	lm3s69xx
lm3s6965	lm3s69xx
lm3s6965_qemu	lm3s69xx
lm4f120	lm3s69xx
lpc1768_mbed	lpc176x
lpc1768_mbed_ahb_ram	lpc176x
lpc1768_mbed_ahb_ram_eth	lpc176x
lpc17xx_ea_ram	lpc24xx
lpc17xx_ea_rom_int	lpc24xx
lpc17xx_plx800_ram	lpc24xx
lpc17xx_plx800_rom_int	lpc24xx
lpc2362	lpc24xx
lpc23xx_tli800	lpc24xx
lpc24xx_ea	lpc24xx
lpc24xx_ncs_ram	lpc24xx
lpc24xx_ncs_rom_ext	lpc24xx
lpc24xx_ncs_rom_int	lpc24xx
lpc24xx_plx800_ram	lpc24xx
lpc24xx_plx800_rom_int	lpc24xx
lpc40xx_ea_ram	lpc24xx
lpc40xx_ea_rom_int	lpc24xx
lpc32xx_mzx	lpc32xx
lpc32xx_mzx_stage_1	lpc32xx
lpc32xx_mzx_stage_2	lpc32xx
lpc32xx_phycore	lpc32xx
raspberrypi	raspberrypi
raspberrypi2	raspberrypi
realview_pbx_a9_qemu	realview-pbx-a9
rtl22xx	rtl22xx
rtl22xx_t	rtl22xx
smdk2410	smdk2410
stm32f105rc	stm32f4
stm32f4	stm32f4
nucleo-h743zi	stm32h7
nucleo-h753zi	stm32h7
nucleo-h755zi	stm32h7
stm32h7	stm32h7
stm32h747i-disco	stm32h7
stm32h747i-disco-m4	stm32h7
stm32h750b-dk	stm32h7
stm32h757i-eval	stm32h7
stm32h757i-eval-m4	stm32h7
stm32h7b3i-dk	stm32h7
stm32u5-grisp-nano	stm32u5
tms570lc4357_hdk	tms570
tms570lc4357_hdk_sdram	tms570
tms570ls3137_hdk	tms570
tms570ls3137_hdk_intram	tms570
tms570ls3137_hdk_sdram	tms570
xen_virtual	xen
versal_rpu_lock_step	xilinx-versal-rpu
versal_rpu_split_0	xilinx-versal-rpu
versal_rpu_split_1	xilinx-versal-rpu
xilinx_zynq_a9_qemu	xilinx-zynq
xilinx_zynq_microzed	xilinx-zynq
xilinx_zynq_picozed	xilinx-zynq
xilinx_zynq_pynq	xilinx-zynq
xilinx_zynq_zc702	xilinx-zynq
xilinx_zynq_zc706	xilinx-zynq
xilinx_zynq_zedboard	xilinx-zynq
xilinx_zynq_zybo	xilinx-zynq
xilinx_zynq_zybo_z7	xilinx-zynq
xilinx_zynqmp_ultra96	xilinx-zynqmp
zynqmp_rpu_lock_step	xilinx-zynqmp-rpu
zynqmp_rpu_split_0	xilinx-zynqmp-rpu
zynqmp_rpu_split_1	xilinx-zynqmp-rpu

i386	families:1 bsps:6
pc386	pc386
pc486	pc386
pc586	pc386
pc586-sse	pc386
pc686	pc386
pcp4	pc386

m68k	families:5 bsps:6
av5282	av5282
COBRA5475	genmcf548x
m5484FireEngine	genmcf548x
mcf5235	mcf5235
mcf5329	mcf5329
uC5282	uC5282

microblaze	families:1 bsps:2
kcu105	microblaze_fpga
kcu105_qemu	microblaze_fpga

mips	families:6 bsps:6
csb350	csb350
hurricane	hurricane
jmr3904	jmr3904
malta	malta
rbtx4925	rbtx4925
rbtx4938	rbtx4938

moxie	families:1 bsps:1
moxiesim	moxiesim

nios2	families:1 bsps:1
nios2_iss	nios2_iss

or1k	families:1 bsps:1
generic_or1k	generic_or1k

powerpc	families:16 bsps:38
beatnik	beatnik
icecube	gen5200
pm520_cr825	gen5200
pm520_ze30	gen5200
br_uid	gen83xx
hsc_cm01	gen83xx
mpc8309som	gen83xx
mpc8313erdb	gen83xx
mpc8349eamds	gen83xx
mcp750	motorola_powerpc
mtx603e	motorola_powerpc
mvme2100	motorola_powerpc
mvme2307	motorola_powerpc
mvme2700	motorola_powerpc
qemuprep	motorola_powerpc
qemuprep-altivec	motorola_powerpc
gwlcfm	mpc55xxevb
mpc5566evb	mpc55xxevb
mpc5643l_evb	mpc55xxevb
mpc5668g	mpc55xxevb
mpc5674fevb	mpc55xxevb
phycore_mpc5554	mpc55xxevb
mpc8260ads	mpc8260ads
mvme3100	mvme3100
psim	psim
qemuppc	qemuppc
qoriq_core_0	qoriq
qoriq_core_1	qoriq
qoriq_e500	qoriq
qoriq_e6500_32	qoriq
qoriq_e6500_64	qoriq
ss555	ss555
t32mppc	t32mppc
pghplus	tqm8xx
tqm8xx_stk8xx	tqm8xx
virtex	virtex
virtex4	virtex4
virtex5	virtex5

riscv	families:4 bsps:25
griscv	griscv
grv32i	griscv
grv32im	griscv
grv32imac	griscv
grv32imafdc	griscv
niosvc10lp	niosv
noel32im	noel
noel32imafd	noel
noel64imac	noel
noel64imafd	noel
noel64imafdc	noel
beaglevfire	riscv
frdme310arty	riscv
kendrytek210	riscv
mpfs64imafdc	riscv
rv32i	riscv
rv32iac	riscv
rv32im	riscv
rv32imac	riscv
rv32imafc	riscv
rv32imafd	riscv
rv32imafdc	riscv
rv64imac	riscv
rv64imafd	riscv
rv64imafdc	riscv

sparc	families:3 bsps:8
erc32	erc32
at697f	leon2
leon2	leon2
gr712rc	leon3
gr740	leon3
leon3	leon3
ut699	leon3
ut700	leon3

x86_64	families:1 bsps:2
amd64	amd64
amd64efi	amd64