Hi Jan, I tried your solution and it does not work in my case. The following is an example of the output that I get:
————————————————————— U-Boot> fatload mmc 0 0x30000000 hello.exe reading hello.exe 3456844 bytes read in 269 ms (12.3 MiB/s) U-Boot> bootelf 0x30000000 CACHE: Misaligned operation at range [00200000, 002004d8] CACHE: Misaligned operation at range [0020ea00, 0020ea0c] CACHE: Misaligned operation at range [0020ea0c, 0020ea18] CACHE: Misaligned operation at range [0020ea18, 002506df] CACHE: Misaligned operation at range [002506e0, 002506e8] CACHE: Misaligned operation at range [002506e8, 002506ec] CACHE: Misaligned operation at range [002506ec, 002506f0] CACHE: Misaligned operation at range [002506f0, 002506f4] CACHE: Misaligned operation at range [002506f4, 00250734] CACHE: Misaligned operation at range [00250734, 00300000] CACHE: Misaligned operation at range [00300000, 00301a6c] CACHE: Misaligned operation at range [00301a80, 00303f68] ## Starting application at 0x00200080 ... data abort pc : [<002006ce>] lr : [<00200160>] reloc pc : [<c4ec26ce>] lr : [<c4ec2160>] sp : 00305b74 ip : 00000010 fp : 3b348850 r10: 00000002 r9 : 3af41ee8 r8 : 00000000 r7 : 00000001 r6 : 0020ecf8 r5 : 3af42694 r4 : 600001da r3 : 0041d710 r2 : 0020ea18 r1 : 00000000 r0 : 00000006 Flags: Nzcv IRQs off FIQs off Mode SVC_32 Resetting CPU ... resetting … ————————————————————— Regardless of the address where I load the ELF file I get alignment issues, even if I try to load “hello.exe” at 0x200000. I realised that my board version is different than yours by looking to your output. Yours is “RTEMS RPi 2B 1.1 (1GB) [00a01041]” and mine is more recent “RTEMS RPi 2B 1,2 (with BCM2837) (1GB) [00a22042]” (obtained by following Niteesh's solution). So, besides the difference in versions, I don’t see any other reason for not getting the same output as you. For your information, the solution provided by Niteesh works for me without problems. Regards, Cláudio > On 18 Feb 2020, at 16:31, jan.som...@dlr.de wrote: > > Hi Cláudio, > > I build a current BSP for the raspberry pi 2 recently (atm without SMP > though). > >> -----Ursprüngliche Nachricht----- >> Von: devel [mailto:devel-boun...@rtems.org] Im Auftrag von Cláudio Maia >> Gesendet: Montag, 17. Februar 2020 21:19 >> An: devel@rtems.org >> Betreff: Loading RTEMS applications from u-boot on Raspberry Pi 2 >> > > [...] > >> >> ------------------- >> For approach #2, I do the following: >> > > I skip the whole mkimage step entirely and boot the elf-files directly. > So my u-boot commands look like this: > > U-Boot> fatload mmc 0 0x30000000 ticker.exe > 4043404 bytes read in 169 ms (22.8 MiB/s) > U-Boot> bootelf 0x30000000 > ## Starting application at 0x00200080 ... > > RTEMS RPi 2B 1.1 (1GB) [00a01041] > > *** BEGIN OF TEST CLOCK TICK *** > > Note, that I load the file quite far at the end of the RAM to avoid conflicts > with the sections loaded by the elf-file. > When I used lower values (below 0x10000000), my application got stuck at > transfer to RTEMS as well. > Maybe that is also the problem with your image loading? > >> $ arm-rtems5-objcopy -R -S -O binary hello.exe hello.bin >> $ mkimage -A arm -O rtems -T kernel -C none -a 0x200000 -e 0x200080 -d >> hello.bin hello-rtems.img >> >> Image Name: >> Created: Mon Feb 17 13:59:50 2020 >> Image Type: ARM RTEMS Kernel Image (uncompressed) >> Data Size: 1055340 Bytes = 1030.61 kB = 1.01 MB >> Load Address: 00200000 >> Entry Point: 00200080 >> >> Then, after u-boot loads on the target, I do the following: >> >> U-Boot> fatload mmc 0:1 0x200000 hello-rtems.img >> reading hello-rtems.img >> 1055404 bytes read in 103 ms (9.8 MiB/s) >> >> U-Boot> iminfo >> >> ## Checking Image at 00200000 ... >> Legacy image found >> Image Name: >> Image Type: ARM RTEMS Kernel Image (uncompressed) >> Data Size: 1055340 Bytes = 1 MiB >> Load Address: 00200000 >> Entry Point: 00200080 >> Verifying Checksum ... OK >> >> U-Boot> bootm 0x200000 >> ## Booting kernel from Legacy Image at 00200000 ... >> Image Name: >> Image Type: ARM RTEMS Kernel Image (uncompressed) >> Data Size: 1055340 Bytes = 1 MiB >> Load Address: 00200000 >> Entry Point: 00200080 >> Verifying Checksum ... OK >> Loading Kernel Image ... OK >> ## Transferring control to RTEMS (at address 00200080) ... >> >> After this point, nothing happens on the board. >> ------------------- >> >> Thank you in advance. Regards >> Cláudio Maia >> _______________________________________________ >> devel mailing list >> devel@rtems.org >> http://lists.rtems.org/mailman/listinfo/devel _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
