SupportedCPUs

Supported Architectures

The following table summarizes which CPU architectures are supported by recent RTEMS release branches and the development head. The target CPU and branch number are used in constructing the target name for the GNU tools and RTEMS with the pattern CPU-rtemsBRANCH with the development head becoming the 4.9 branch. For example, for the Coldfire CPUs, the Target CPU is m68k yielding a target name of m68k-rtems4.10 for the target name using RTEMS 4.10 series releases.

Architecture	Target CPU	4.6.x	4.7.x	4.8.x	4.9.x	4.10.x	4.11.x	5.x	Master
Altera NIOS II	nios	No	No	Yes	Yes	Yes	Yes	Yes	Yes
ADI Blackfin	bfin	No	No	Yes	Yes	Yes	Yes	Yes	Yes
ARM with many CPU models	arm	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
ARM Thumb	arm	No	No	No	Yes	Yes	Yes	Yes	Yes
Atmel AVR	avr	No	Stub	Stub	Stub	Note 1	Note 1	Note 1	No
AMD A29K	a29k	Yes	No	No	No	No	No	No	No
Epiphany	epiphany	No	No	No	No	No	No	Yes	Yes
HP PA-RISC	hppa1.1	Yes	No	No	No	No	No	No	No
Intel/AMD x86	i386	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Intel i960	i960	Yes	No	No	No	No	No	No	No
Lattice Mico32	lm32	No	No	No	No	Yes	Yes	Yes	Yes
MIPS R3000 and R4000	mips	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Motorola MC68xxx	m68k	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Motorola MC683xx	m68k	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Motorola Coldfire	m68k	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Moxie	moxie	No	No	No	No	No	Yes	Yes	Yes
OpenCores? OR32	or32	Yes	No	No	No	No	No	No	No
PowerPC including 4xx, 5xx, 6xx, 7xx, 8xx, 74xx, and e500	powerpc	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes, Note 2
Renesas H8/300	h8300	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
Renesas M32C	m32c	No	No	No	No	Note 1	Note 1	Note 1	Note 1
Renesas M32R	m32r	No	No	No	No	Note 1	Note 1	No	No
Renesas SH including SH1, SH2, SH3 and SH4	sh	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
RISC-V 32 and 64 bit	RISC-V	No	No	No	No	No	No	Yes	Yes
SPARC	sparc	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SPARC V9	sparc64	No	No	No	No	No	Yes	Yes	Yes
Texas Instruments C3x/C4x	tic4x	Yes	No	No	No	Yes	No	No	No

NOTE 1: Does not support interrupts.

NOTE 2: Sixty four bit support in PowerPC was added in the 5.x release series.

Potential Ports

We are always interested in adding ports to other CPU families supported by the GNU tools. If you are interested in working on a port or are ready to submit one, contact us.

• Blackfin
• Xtensa
• Motorola MCore
• Texas Instruments C6x
• ARC
• ...

If interested in a particular architecture, please ask about it on the mailing lists.

Obsoleted Ports

An RTEMS port may be obsoleted for a number of reasons. The CPU architecture may no longer be manufactured, interest within the embedded community has gone away, or the GNU tools may drop support it. The following ports have been deemed obsolete and will not be in a future RTEMS release:

• AMD A29K
• Atmel AVR
• Hewlett-Packard PA-RISC
• Intel i960
• OpenCores? OR32 (revived)
• Renesas M32R
• Renesas H8/300
• Texas Instruments C3x/C4x

NOTE: OpenCores? CPUs may return. The port was dropped due to them being unable to keep the FSF bintils, gcc, etc. in a working state.