Re: RTEMS for ARM Cortex-M1 ?
On 14/02/15 02:58, Cudmore, Alan P. (GSFC-5820) wrote: A project is looking at using RTEMS on an FPGA based ARM Cortex-M1 like the one in the Microsemi ProAsic3L development kit: http://www.microsemi.com/products/fpga-soc/design-resources/dev-kits/proasi c3/cortex-m1-enabled-proasic3l-development-kit Wikipedia says the Cortex-M1 is an ARMv6M architecture. http://en.wikipedia.org/wiki/ARM_Cortex-M#Cortex-M1 I see that there is ARMv7M support in score, would a similar port be needed for ARMv6M? Is an ARMv6M close to anything in RTEMS now? The ARMv6M has a reduced instruction set compared to ARMv7M. We have an ARMv6M multilib, so the GCC part should be fine. You have to fix some ARMv7M assembly code in RTEMS (not much). I tried to do this two weeks a go, but after 10 minutes I gave up, since it had no priority for me. -- Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.hu...@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
RTEMS for ARM Cortex-M1 ?
A project is looking at using RTEMS on an FPGA based ARM Cortex-M1 like the one in the Microsemi ProAsic3L development kit: http://www.microsemi.com/products/fpga-soc/design-resources/dev-kits/proasi c3/cortex-m1-enabled-proasic3l-development-kit Wikipedia says the Cortex-M1 is an ARMv6M architecture. http://en.wikipedia.org/wiki/ARM_Cortex-M#Cortex-M1 I see that there is ARMv7M support in score, would a similar port be needed for ARMv6M? Is an ARMv6M close to anything in RTEMS now? Thanks, Alan ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Intermittent connectivity.
I will be rebuilding most of our web services before installing a commercial SSL certificate. All of our HTTP and some FTP, Git and other services will be going up/down as I work on them. Amar. ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Re: how patching
Just to clarify: the ability to provide a new piece of binary corresponding to a driver and replace the existing one. Have anybody tried this before? Thanks! Daniel. On Fri, Feb 13, 2015 at 12:27 PM, Daniel Gutson wrote: > Hi, > >is there any current experience / support with hot patching? E.g. > patching a driver while the whole system is running. > > Thanks, > >Daniel. > > -- > > Daniel F. Gutson > Chief Engineering Officer, SPD > > San Lorenzo 47, 3rd Floor, Office 5 > Córdoba, Argentina > > Phone: +54 351 4217888 / +54 351 4218211 > Skype:dgutson > LinkedIn: http://ar.linkedin.com/in/danielgutson -- Daniel F. Gutson Chief Engineering Officer, SPD San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina Phone: +54 351 4217888 / +54 351 4218211 Skype:dgutson LinkedIn: http://ar.linkedin.com/in/danielgutson ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
open_dev_console.c review
Hi I was looking at libcsupport/src/open_dev_console.c and had a few thoughts. (1) Since this method is only configured to be used when the console driver is installed, should we now consider it a fatal error if the first open() fails? The error decision was made before we could drop this method out of the initialization path automatically. (2) These error codes are arbitrary. Sebastian worked to make a list of standard codes for fatal errors. Should these be in that list? Thanks. -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.comOn-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available(256) 722-9985 ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Updating _Copyright_Notice in copyrt.h
Hi I noticed running fileio.exe that _Copyright_Notice is out of date. I can update the year but should it be changed more? I don't think this impacts the minimum size. -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.comOn-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available(256) 722-9985 ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
how patching
Hi, is there any current experience / support with hot patching? E.g. patching a driver while the whole system is running. Thanks, Daniel. -- Daniel F. Gutson Chief Engineering Officer, SPD San Lorenzo 47, 3rd Floor, Office 5 Córdoba, Argentina Phone: +54 351 4217888 / +54 351 4218211 Skype:dgutson LinkedIn: http://ar.linkedin.com/in/danielgutson ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Re: [rtems commit] smpcapture02: Add test of functionality to add custom entries to capture trace
On 2/13/2015 2:54 AM, Chris Johns wrote: > On 13/02/2015 7:06 pm, Sebastian Huber wrote: >> On 13/02/15 08:56, Daniel Cederman wrote: Daniel(s), could enlighten me why this is needed ? Is this a arch constraint or something else ? Chris >>> It is an arch constraint. On SPARC, for example, all memory accesses >>> needs to a be aligned. From the SPARC V8 manual: >>> >>> "Halfword accesses must be aligned on 2-byte boundaries, word accesses >>> must be aligned on 4-byte boundaries, and doubleword accesses must be >>> aligned on 8-byte boundaries. An improperly aligned address in a load >>> or store instruction causes a trap to occur." >>> >>> Since the capture engine does a 64-bit write when it writes the time, >>> the entries needs to be aligned on 8-byte boundaries. >> If you need this hack in the test, then there is a bug in the caputure >> engine. >> > Agreed, and what I was wondering. > > Maybe the capture engine needs a buffer alignment arg so the data > transfers match up. malloc is supposed to return buffers aligned to the strictest requirements of the architecture. This usually results in 4 or 8 byte alignment. Maybe the capture engine just needs to follow the same rule. > Chris > ___ > devel mailing list > devel@rtems.org > http://lists.rtems.org/mailman/listinfo/devel -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.comOn-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available(256) 722-9985 ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Re: [rtems commit] smpcapture02: Add test of functionality to add custom entries to capture trace
On 13/02/2015 7:06 pm, Sebastian Huber wrote: On 13/02/15 08:56, Daniel Cederman wrote: > Daniel(s), could enlighten me why this is needed ? Is this a arch > constraint or something else ? > > Chris It is an arch constraint. On SPARC, for example, all memory accesses needs to a be aligned. From the SPARC V8 manual: "Halfword accesses must be aligned on 2-byte boundaries, word accesses must be aligned on 4-byte boundaries, and doubleword accesses must be aligned on 8-byte boundaries. An improperly aligned address in a load or store instruction causes a trap to occur." Since the capture engine does a 64-bit write when it writes the time, the entries needs to be aligned on 8-byte boundaries. If you need this hack in the test, then there is a bug in the caputure engine. Agreed, and what I was wondering. Maybe the capture engine needs a buffer alignment arg so the data transfers match up. Chris ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Re: [rtems commit] smpcapture02: Add test of functionality to add custom entries to capture trace
On 13/02/15 08:56, Daniel Cederman wrote: > Daniel(s), could enlighten me why this is needed ? Is this a arch > constraint or something else ? > > Chris It is an arch constraint. On SPARC, for example, all memory accesses needs to a be aligned. From the SPARC V8 manual: "Halfword accesses must be aligned on 2-byte boundaries, word accesses must be aligned on 4-byte boundaries, and doubleword accesses must be aligned on 8-byte boundaries. An improperly aligned address in a load or store instruction causes a trap to occur." Since the capture engine does a 64-bit write when it writes the time, the entries needs to be aligned on 8-byte boundaries. If you need this hack in the test, then there is a bug in the caputure engine. -- Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.hu...@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
Re: [rtems commit] IMFS: Add fine grained configuration
On 12/02/15 21:55, Joel Sherrill wrote: Is there any guidance for the (unexpected) user using the miniIMFS? The configuration parameter just went away. Can it be an error in confdefs.h? Yes, good idea, I will add an error to confdefs.h. I am not finished with the work, my ultimate goal is to remove the DEVFS and make IMFS the only root filesystem for RTEMS. -- Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.hu...@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. ___ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
