SK-AM64B: 'syscfg/ti_drivers_config.o' build errors while trying to build LED blink example with IPC

Amey P

Part Number: SK-AM64B
Other Parts Discussed in Thread: SYSCONFIG

Hello Team

I have a SK-AM64B board. On this board I could run the LED Blink example through the debugger. As next step I loaded Linux into the board as mentioned in this https://dev.ti.com/tirex/content/tirex-product-tree/am64x-devtools/docs/am64x_skevm_quick_start_guide.html

As mentioned in the video (somewhere at the end) https://www.youtube.com/watch?v=VuJLyO5R2yM I want to run the LED blink example from Linux (using remoteproc).

As mentioned in the vide and also at this link (https://dev.ti.com/tirex/explore/node?node=A__Acm3ikTTJ1WqHgJWiJz0tA__AM64-ACADEMY__WI1KRXP__LATEST) for multicore development,

I have done the required changes in example.syscfg, i.e. IPC enabled & its required parameters set, UART is disabled and linker.cmd I used from the Benchmark example.

I am getting following errors while building the example in CCS:

"C:/ti/ti-cgt-armllvm_3.2.1.LTS/bin/tiarmclang.exe" -c -mcpu=cortex-r5 -mfloat-abi=hard -mfpu=vfpv3-d16 -mlittle-endian -mthumb -I"C:/ti/ti-cgt-armllvm_3.2.1.LTS/include/c" -I"C:/ti/mcu_plus_sdk_am64x_09_01_00_41/source" -DSOC_AM64X -D_DEBUG_=1 -g -Wall
-Wno-gnu-variable-sized-type-not-at-end -Wno-unused-function -MMD -MP -MF"syscfg/ti_drivers_config.d_raw" -MT"syscfg/ti_drivers_config.o"
-I"D:/Test/gpio_led_blink_am64x-sk_r5fss0-0_nortos_ti-arm-clang/Debug/syscfg" -o"syscfg/ti_drivers_config.o" "syscfg/ti_drivers_config.c"
subdir_rules.mk:39: recipe for target 'syscfg/ti_drivers_config.o' failed
syscfg/ti_drivers_config.c:217:88: error: expected expression
rpmsgParams.vringTxBaseAddr[CSL_CORE_ID_R5FSS0_1] = (uintptr_t)(&gIpcSharedMem[]);
^
syscfg/ti_drivers_config.c:218:88: error: expected expression
rpmsgParams.vringTxBaseAddr[CSL_CORE_ID_R5FSS1_0] = (uintptr_t)(&gIpcSharedMem[]);
^
syscfg/ti_drivers_config.c:219:88: error: expected expression
rpmsgParams.vringTxBaseAddr[CSL_CORE_ID_R5FSS1_1] = (uintptr_t)(&gIpcSharedMem[]);
^
syscfg/ti_drivers_config.c:220:88: error: expected expression
rpmsgParams.vringTxBaseAddr[CSL_CORE_ID_M4FSS0_0] = (uintptr_t)(&gIpcSharedMem[]);
^
4 errors generated.
gmake: *** [syscfg/ti_drivers_config.o] Error 1

Anything is missing?

Thanks

over 1 year ago

+1 Nick Saulnier over 1 year ago

TI__Guru* 95440 points

Hello Amey,

I assume you are using AM64x MCU+ SDK 9.1?

FYI, the AM64x academy was last updated for SDK 9.0. I have not had bandwidth yet to update it for SDK 9.1.

A couple things changed between MCU+ SDK 9.0 and SDK 9.1:

1) The AM64x academy uses the SysConfig GUI interface for memory management by default, instead of linker.cmd files.

However, if you want to modify the linker.cmd file directly instead of doing it through the GUI, you can still generate the linker.cmd file and then modify the generated file instead of using a GUI interface. Refer to the MCU+ SDK docs, page "Memory Configurator", section "By-passing Sysconfig generated Linker"
https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/09_01_00_41/exports/docs/api_guide_am64x/MEMORY_CONFIGURATOR.html

2) If IPC between multiple MCU+ cores is enabled, then the project MUST be built as a system project.

Let's say we have enabled IPC_Notify and IPC_RPMsg between R5F0_0 and R5F0_1. If you try to JUST build the R5F0_0 example on its own, you will get the make errors that you observed above. I will discuss this more in the next response.

3) Graceful shutdown of remote cores from Linux is now SUPPORTED for AM64x

Please read the section titled "Graceful Shutdown" in the AM64x Academy, multicore module, page "How to Develop with RPMsg IPC"
https://dev.ti.com/tirex/explore/node?a=7qm9DIS__LATEST&node=A__AT0quqp1AZJ7z5jn1Ua5nQ__AM64-ACADEMY__WI1KRXP__LATEST

The AM64x MCU+ SDK 9.1 docs have not been updated yet. Please refer to the AM62x MCU+ SDK docs for now:
https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/09_01_00_39/exports/docs/api_guide_am62x/GRACEFUL_REMOTECORE_SHUTDOWN.html

Regards,

Nick

+1 Nick Saulnier over 1 year ago

TI__Guru* 95440 points

Ok, so how do you get around the make errors?

Step 1: Disable IPC between all MCU+ cores where you are not using it

For example, let's say you are just trying to write code to run on the R5F0_0, and that you are NOT using IPC between the R5F0_0 core and any of the other MCU+ cores.

In that case, in the project's sysconfig settings, please set every entry in the RED box to be "ALL IPC DISABLED":

For more information, refer to my response here:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1320475/am6442-build-error-with-sample-code/5031502#5031502

Step 2: If you DO have IPC enabled between MCU+ cores, please build the project as a system instead of per-core

For example, if I wanted to build the ipc_rpmsg_echo example from the terminal, I would build it like this:

make -s -C examples/drivers/ipc/ipc_rpmsg_echo_linux/am64x-evm/system_freertos

Regards,

Nick

0 Amey P over 1 year ago in reply to Nick Saulnier

Intellectual 320 points

Hello Nick

Thanks for your response

Yes I am using MCU+ SDK 9.1.0.14

1) The compilation issues were resolved after disabling the IPC for other cores (as I am not using them).

2) After changing the linker.cmd related steps, I was able to build the project. I had to keep the new linker.cmd in the main project directory

Regards
Amey

0 Nick Saulnier over 1 year ago in reply to Amey P

TI__Guru* 95440 points

Hello Amey,

Glad that things are working for you now! I should probably put together a quick FAQ on that error output, since it is not currently documented.

Is there any additional information you think I should add to the FAQ to make it easier for others who run into the same error?

Thanks,

Nick

0 Amey P over 1 year ago in reply to Nick Saulnier

Intellectual 320 points

Hello Nick

Apart from above information, it would be helpful to put steps like how to copy this .out into the Linux file system on the AM64x board

I am currently in process of testing this .out file on the Linux system. I haven't done that yet. I will update here if I face any other issue

Thanks

Amey

0 Nick Saulnier over 1 year ago in reply to Amey P

TI__Guru* 95440 points

For future readers, the FAQ based on this thread is here:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1324828/faq-mcu-sdk-build-error-expected-expression-rpmsgparams-vringtxtaseaddr

Hello Amey,

That's fair feedback. That information is probably not appropriate for this specific FAQ, but I'll make a note to think about adding it somewhere in the AM64x academy.

If you are using a Linux PC for development and are saving the filesystem on an SD card, then you can just plug the SD card into the computer and copy files over through the terminal. You'll need to find more detailed information somewhere else online, but I typically do it like this:

$ lsblk // check to see what is currently connected to the computer
// plug the SD card in
$ lsblk // which one is the SD card? let's assume it's /dev/sdd
$ sudo mount // mount the SD card onto a mount point
$ sudo cp // copy the file into the SD card /lib/firmware folder
$ sudo umount // unmount the SD card

Or if you are connected to the EVM over Ethernet, you can just use SCP. Again, you'll need to find more information online. But here are some of my personal notes.

on the PC,
scp ipc_rpmsg_echo_linux.release.out root@192.168.1.164:~
// where 192.168.1.164 was my ip address on the EVM

Depending on the processor & SDK version, I also had to add
$ -o HostKeyAlgorithms=+ssh-rsa after "scp" to get it to work
b/c the encryption algorithm isn't set by default.

Regards,

Nick

0 Nick Saulnier over 1 year ago in reply to Nick Saulnier

TI__Guru* 95440 points

For future readers, Amey had some followup questions about loading new firnware binaries. We continued our discussion here: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1325282/re-sk-am64b-syscfg-ti_drivers_config-o-build-errors-while-trying-to-build-led-blink-example-with-ipc

Regards,

Nick

0 Amey P over 1 year ago in reply to Nick Saulnier

Intellectual 320 points

Thanks Nick for the support on this topic.

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SK-AM64B: 'syscfg/ti_drivers_config.o' build errors while trying to build LED blink example with IPC