Bacport of ARM cache, RTL and TMS570 to RTEMS 4.11 Was: Simple question about RTL

[Alan Cudmore]

Hi Pavel,
I have built the Raspberry Pi 1 and 2 BSPs with the latest 4.11 branch. I plan on testing them soon. 

I also tried to build the 4.11 sparc/sis BSP, but it failed to compile:
../../../../../../../rtems-src/rtems-4.11/c/src/../../cpukit/libdl/rtl-obj.c:585:47: error: 'CPU_CACHE_LINE_BYTES' undeclared (first use in this function)
     old_end = (uintptr_t)sync_ctx->end_va & ~(CPU_CACHE_LINE_BYTES - 1);

It looks like rtl-obj.c uses CPU_CACHE_LINE_BYTES, but a grep only shows that is defined for ARM.

Do we need to back port these defines for the other CPU architectures as well?

Thanks,
Alan


> On Oct 2, 2016, at 6:06 AM, Pavel Pisa <ppisa4lists at pikron.com> wrote:
> 
> Hello all,
> 
> I have pushed massive update to RTEMS-4.11 ARM BSPs
> support. The cache manager and RTL update has been
> prepared in response to RTL failures reported by Tim Tian
> on Zynq BSP more than month ago. I have proposed
> 4.11 update series at September 9.
> 
>  https://github.com/ppisa/rtems/tree/4.11-arm-update
> 
> Code has been tested by Alan Cudmore and more RPi
> versions and correction of Zynq problem has been reported
> as well. Because there has not been reported any
> problem on master nor on my 4.11-arm-update branch
> I have pushed changes to official 4.11 tree.
> 
> Please, check on more BSPs and applications
> if all works correctly.
> 
> I have pushed TMS570 backport from master to 4.11 as well,
> there has been critical problem corrected on master
> 
> 
> #2794 ARM TMS570 BSP: Serial port hangs when baudrate change
>      initiates before all characters are sent
> 
> and the rest of updates is required to boot RTEMS
> on TMS570LS3137 without separate loader or mixing
> code with other sources.
> 
> I expect to do some more testing of 4.11 on TMS570 HW
> next week.
> 
> From my side, I think that RTEMS 4.11 branch is in the
> state where release can report Raspberry Pi 1, 2
> and TMS570 as supported now.
> 
> Best wishes,
> 
>             Pavel
> 
> On Tuesday 06 of September 2016 09:28:42 Pavel Pisa wrote:
>> Hello Chris,
>> 
>> On Tuesday 06 of September 2016 07:12:53 Chris Johns wrote:
>>> Hi Tim and Pavel,
>>> 
>>> Thank you for the patches and testing. I will have a chat to Joel
>>> tomorrow about the patches and what we will do. If Joel agrees I may
>>> test and push the patches.
>>> 
>>> FYI I am currently looking at #2767 which is reported against 4.11 and a
>>> zynq so there is real interest on these patches ending up on 4.11.
>>> 
>>> Chris
>> 
>> I have made 4.11 to boot on Raspberry Pi.
>> 
>> The final patch
>> 
>>  arm/raspberrypi: minimized mainline patch move MMU in front of
>> application image and correct RPi2 boot on 4.11 branch.
>> https://github.com/ppisa/rtems/commit/984047e8295bb82b12700edb3aac911bd8427
>> 8af
>> 
>> of branch
>> 
>>  https://github.com/ppisa/rtems/tree/4.11-arm-update
>> 
>> series.
>> 
>> Tickets
>> 
>>  https://devel.rtems.org/ticket/2783
>> 
>>  https://devel.rtems.org/ticket/2782
>> 
>> At least one of these tickets can be assigned to all patches
>> in this backports branch.
>> 
>> I have to move to other tasks today to have students exams prepared
>> and to have resources to pay our company bills.
>> 
>> I understand that modifications are huge for 4.11 ....
>> 
>> If there is interrest I can resend series to mainlinglist
>> when I return from our potential customers meeting.
>> 
>> Best wishes,
>> 
>>              Pavel
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