Hi Ritesh,
On Wed, Aug 20, 2014 at 5:37 PM, Ritesh Harjani <ritesh.harj...@gmail.com> wrote: > Hi Hesham, > > Thanks for the info. > > On Wed, Aug 20, 2014 at 3:10 PM, Hesham Moustafa <heshamelmat...@gmail.com> > wrote: >> >> Hi Ritesh, >> >> On Wed, Aug 20, 2014 at 11:28 AM, Ritesh Harjani >> <ritesh.harj...@gmail.com> wrote: >> > Hi All, >> > >> > I have been following RTEMS from quite some time rather I would say my >> > questions have been on & off from this community (although I haven't >> > contributed anything yet). So, this mail is mainly regarding some help >> > from >> > the community members so that I can pitch in to contribute something to >> > this >> > community. >> > >> > Based on my knowledge I would like to start from ARM bsps/raspberry pi >> > as I >> > am seeing quite lot of development activity going on in these areas. >> > >> > If someone can guide me with the following activities it would be great: >> > >> > 1. I need to just start something, may be with a small patch (which >> > should >> > be related to the above mentioned area): >> > Earlier I thought of starting with some driver development but without >> > having basic knowledge of RTEMS file structure/other areas, I wasn't >> > able to >> > complete it. >> > >> > 2. Need to understand the boot flow and the code initialization routine >> > which can give me an idea as to where all and what all drivers are >> > present >> > etc etc.. >> > >> > >> > Later may be I can think of porting/developing some driver for any ARM >> > bsp. >> > >> > >> > Background activity done till now: >> > >> > 1. Followed all the steps in Alan's Blog >> > >> > (http://alanstechnotes.blogspot.in/2013/03/running-your-first-rtems-program-on.html): >> > I was able to run ticker.exe sample test on Raspberry pi. Although there >> > are >> > some doubts which I have asked below. >> > >> > 2. Ordered OpenOCD based JTAG board. Once this comes I will make this >> > JTAG >> > board start working. >> > >> > >> > Queries: >> > 1. Is by default raspberry pi MMU enabled and all the page table are >> > setup >> > ?(from HEAD of git://git.rtems.org/rtems.git) >> > >> > 2. I cannot see any libmmu tests which I think Hesham developed during >> > GSOC >> > 2013 ? >> > Do we keep this into different git ? >> > >> Some of my project code has been merged (mainly low-level parts of >> libmm implemented for Raspberry Pi). The other code is held in my old >> github repo here https://github.com/heshamelmatary/rtems-gsoc2013 > > > Thanks for the info, but I was unable to find mmtest in your git repo too. > I saw in here: testsuites/libtests/ > Please switch to the low-level-libmm branch. You can find all my GSoC'2013 work there. https://github.com/heshamelmatary/rtems-gsoc2013/tree/low-level-libmm/testsuites/libtests >> >> > 3. With OpenOCD and gdb is it possible to see all the CP15 coprocessor >> > registers on ARM ? >> > >> > 4. How was Hesham able to debug and see the MMU register settings(like >> > SCTLR.MMU) during his work on GSoc 2013 libmmu development for raspberry >> > pi >> > ? Was it QEMU ? >> > >> I was using QEMU for debugging Xilinx Zynq BSP, as well as Realview. >> For Raspberry Pi (worked on the HW board, no simulators), I just used >> printf to print out the values of registers which I need to peek into. > > > Ya, with print help I was able to get the values of control and aux control > register. > So, by default L1 and L2 caches are enabled, also MMU is enabled :) > > For reference: > Control register: 0x2085117d > Aux control register: 0x7 > >> >> > >> > >> > Please feel free to guide me through the work plan if anyone have in >> > his/her >> > mind for ARM bsps. >> > >> > >> > >> > Thanks >> > Ritesh Harjani >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > > > _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
