Re: RTEMS for ARM Cortex-M1 ?

2015-02-14 Thread Joel Sherrill
On February 14, 2015 10:38:13 AM CST, Alan Cudmore wrote: >Thanks for the info.. so it sounds like a new BSP and some changes to >the ARMV7-M code in score. I wouldn't think there is a lot of work. Just tweaks to avoid instructions not available. >The project will also look at some other f

Re: RTEMS for ARM Cortex-M1 ?

2015-02-14 Thread Alan Cudmore
Thanks for the info.. so it sounds like a new BSP and some changes to the ARMV7-M code in score. The project will also look at some other fpga based cpus. I'm glad to see the openrisc and microblaze work going on. Alan On Feb 14, 2015 8:29 AM, "Sebastian Huber" < sebastian.hu...@embedded-brains.de

Re: Starting with RTEMS

2015-02-14 Thread Gedare Bloom
On Sat, Feb 14, 2015 at 6:31 AM, Rohini Kulkarni wrote: > Hi, > > I am new to RTEMS. I am aware of the GSOC Getting Started page. I have gone > through the list of open projects, For a start, what background do i need to > build with respect to RTEMS before choosing any particular project. > Each

Re: how patching

2015-02-14 Thread Gedare Bloom
The most general way to solve this problem is to use a form of dynamic loading. I am aware of two such user-based approaches in RTEMS, cexp has it and I believe NASA also had the capability. Their approach was to reserve sections of the binary for known parts of the application, and then you can up

Re: RTEMS for ARM Cortex-M1 ?

2015-02-14 Thread Sebastian Huber
On 14/02/15 14:27, Sebastian Huber wrote: On 14/02/15 12:48, Daniel Gutson wrote: We're developing support for the cortex M 4 so we can let you know once we commit the patches so you can have a starting point in case an emulator is also needed. The Cortex-M4 is already supported including the

Re: RTEMS for ARM Cortex-M1 ?

2015-02-14 Thread Sebastian Huber
On 14/02/15 12:48, Daniel Gutson wrote: We're developing support for the cortex M 4 so we can let you know once we commit the patches so you can have a starting point in case an emulator is also needed. The Cortex-M4 is already supported including the FPU (e.g. LPC4088). -- Sebastian Huber, em

Re: Starting with RTEMS

2015-02-14 Thread Joel Sherrill
On February 14, 2015 5:31:10 AM CST, Rohini Kulkarni wrote: >Hi, > >I am new to RTEMS. I am aware of the GSOC Getting Started page. I have >gone through the list of open projects, For a start, what background do >i need to build with respect to RTEMS before choosing any particular >project. Y

Re: RTEMS for ARM Cortex-M1 ?

2015-02-14 Thread Daniel Gutson
El 13/02/2015 22:59, "Cudmore, Alan P. (GSFC-5820)" escribió: > > 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-proas

Starting with RTEMS

2015-02-14 Thread Rohini Kulkarni
Hi, I am new to RTEMS. I am aware of the GSOC Getting Started page. I have gone through the list of open projects, For a start, what background do i need to build with respect to RTEMS before choosing any particular project. Thank you. -- Rohini Kulkarni _

Re: how patching

2015-02-14 Thread Олег Мороз
I've tried to do that on a flying spacecraft. Spacecraft on board computer's RTOS was a vxworks but in my case it does not matters. I've did it in most easiest way. I've got an original binary file (with which SC was launched) and a modified (with some bugfixes). Then i'm just compare it byte b