SK-AM62: Reissuing: Load M4 firmware generate from MCU RTOS SDK

Hello Nick,

thank you for the quick response.

I tried fix#1, since we are planning to use rpmsg anyway, but I got following errors while compiling:

Building target: "hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang.out"
Invoking: Arm Linker
"/home/grabner/ti/ti-cgt-armllvm_2.1.2.LTS/bin/tiarmclang" -mcpu=cortex-m4 -mfloat-abi=hard -mlittle-endian -mthumb -DSOC_AM62X -D_DEBUG_=1 -g -Wall -Wno-gnu-variable-sized-type-not-at-end -Wno-unused-function -Wl,-m"hello_world.Debug.map" -Wl,-i"/home/grabner/ti/mcu_plus_sdk_am62x_08_06_00_18/source/kernel/nortos/lib" -Wl,-i"/home/grabner/ti/mcu_plus_sdk_am62x_08_06_00_18/source/drivers/lib" -Wl,-i"/home/grabner/ti/mcu_plus_sdk_am62x_08_06_00_18/source/board/lib" -Wl,-i"/home/grabner/ti/ti-cgt-armllvm_2.1.2.LTS/lib" -Wl,--reread_libs -Wl,--diag_wrap=off -Wl,--display_error_number -Wl,--warn_sections -Wl,--xml_link_info="hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang_linkInfo.xml" -Wl,--ram_model -o "hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang.out" "./syscfg/ti_dpl_config.o" "./syscfg/ti_drivers_config.o" "./syscfg/ti_drivers_open_close.o" "./syscfg/ti_pinmux_config.o" "./syscfg/ti_power_clock_config.o" "./syscfg/ti_board_config.o" "./syscfg/ti_board_open_close.o" "./hello_world.o" "./main.o" "../linker.cmd" -Wl,-lnortos.am62x.m4f.ti-arm-clang.debug.lib -Wl,-ldrivers.am62x.m4f.ti-arm-clang.debug.lib -Wl,-lboard.am62x.m4f.ti-arm-clang.debug.lib -Wl,-llibc.a -Wl,-llibsysbm.a
makefile:145: recipe for target 'hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang.out' failed
warning #10247-D: creating output section ".resource_table" without a SECTIONS specification
"../linker.cmd", line 25: error #10099-D: program will not fit into available memory, or the section contains a call site that requires a trampoline that can't be generated for this section. run placement with alignment fails for section ".bss" size 0x8235a. Available memory ranges:
M4F_DRAM size: 0x10000 unused: 0xf020 max hole: 0xf020
error #10010: errors encountered during linking; "hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang.out" not built
tiarmclang: error: tiarmlnk command failed with exit code 1 (use -v to see invocation)
gmake[1]: *** [hello_world_am62x-sk_m4fss0-0_nortos_ti-arm-clang.out] Error 1
gmake: *** [all] Error 2
makefile:141: recipe for target 'all' failed

**** Build Finished ****

It looks like it ran out of space, but this is the plane "hello world" example from the SDK without any changes except including IPC.

Thank you.

Regards, Clemens

Hello Nick,

I tried a few things and found something. Unfortunately it still doesn't work completely.

If you add two additional lines to the linker.cmd file, that are not mentioned in the patch you showed me, coming from "ipc_rpmsg_echo_linux..." it compiles correctly:

SECTIONS{

/* this is used only when IPC RPMessage is enabled, else this is not used */
    .bss.ipc_vring_mem   (NOLOAD) : {} > IPC_VRING_MEM

}

MEMORY {

IPC_VRING_MEM: ORIGIN = 0x9C800000, LENGTH = 0x00300000

}

Sadly after placing it in the /lib/firmware folder and booting up it returns:

[ 7.231552] remoteproc remoteproc0: remote processor 5000000.m4fss is now up

and

root@verdin-am62-15133540:~# cat /sys/class/remoteproc/remoteproc0/state
running

but there are no outputs, neither on UART, nor in /sys/kernel/debug/remoteproc/remoteproc0/trace0

Please let me know if you have any advice.

Thank you and best Regards,
Clemens

Thanks for responding back with your solution Clemens! Glad to hear you were able to make some progress.

FYI for you and future readers, I have added documentation on using the RAT to the new AM62Ax MCU academy:
https://dev.ti.com/tirex/explore/node?node=A__AXBsTEetU2hiTMZSzq4row__AM62A-ACADEMY__WeZ9SsL__LATEST

We are still writing the AM62x MCU Academy, but it will have the same page. Let us know if you have any feedback for improving the next version of the docs!

Regards,

Nick