TDA4VM: Boot failed: -22

Steve Chung

Part Number: TDA4VM

Tool/software:

Hello TI Adventurers:

Please help... I'm encountering a "Boot failed: -22" during attempts to load and run a very simple application on one of the C66x processors. Main C-code is as follows:

#pragma DATA_SECTION(obs_data, ".data")
#pragma RETAIN(obs_data)

static float obs_data[1000];

int main(void) {

    int _count = 0;
    while (1) {
        _count++;
        obs_data[_count % 1000] = _count % 1000;
    }
    return 0;
}

The C-code is built and linked to a very generic cmd file:

/* 
 * This file is derived from:
 * https://git.ti.com/cgit/processor-sdk/vision_apps/tree/platform/j721e/rtos/c66x_1/linker_mem_map.cmd?h=main
 * and
 * https://git.ti.com/cgit/processor-sdk/vision_apps/tree/platform/j721e/rtos/c66x_1/j721e_linker_freertos.cmd?h=main
 */ 
-stack  0x2000      /* SOFTWARE STACK SIZE */
-heap   0x1000      /* HEAP AREA SIZE      */
--symbol_map _Hwi_intcVectorTable=Hwi_intcVectorTable

MEMORY
{
	/* L2 for C66x_1 [ size 224.00 KB ] */
    L2RAM_C66x_1             ( RWIX ) : ORIGIN = 0x00800000 , LENGTH = 0x00038000
    /* DDR for C66x_1 for Linux resource table [ size 1024 B ] */
    DDR_C66x_1_RESOURCE_TABLE ( RWIX ) : ORIGIN = 0xA6100000 , LENGTH = 0x00001000
    /* DDR for C66x_1 for boot section [ size 1024 B ] */
    DDR_C66x_1_BOOT          ( RWIX ) : ORIGIN = 0xA6200000 , LENGTH = 0x00000400
    /* DDR for C66x_1 for code/data [ size 14.00 MB ] */
    DDR_C66x_1               ( RWIX ) : ORIGIN = 0xA6201000 , LENGTH = 0x00DFFC00
    /* DDR for C66x_1 for Linux IPC [ size 1024.00 KB ] */
    DDR_C66x_1_DMA           ( RWIX ) : ORIGIN = 0xA6000000 , LENGTH = 0x00100000
    /* Memory for IPC Vring's. MUST be non-cached or cache-coherent [ size 32.00 MB ] */
    IPC_VRING_MEM                     : ORIGIN = 0xAA000000 , LENGTH = 0x02000000
    /* Memory for remote core logging [ size 256.00 KB ] */
    APP_LOG_MEM                       : ORIGIN = 0xAC000000 , LENGTH = 0x00040000
    /* Memory for TI OpenVX shared memory. MUST be non-cached or cache-coherent [ size 63.75 MB ] */
    TIOVX_OBJ_DESC_MEM                : ORIGIN = 0xAC040000 , LENGTH = 0x03FC0000
    /* Memory for remote core file operations [ size  4.00 MB ] */
    APP_FILEIO_MEM                    : ORIGIN = 0xB0000000 , LENGTH = 0x00400000
    /* Memory for shared memory buffers in DDR [ size 512.00 MB ] */
    DDR_SHARED_MEM                    : ORIGIN = 0xB8000000 , LENGTH = 0x20000000
    /* DDR for c66x_1 for local heap [ size 16.00 MB ] */
    DDR_C66X_1_LOCAL_HEAP    ( RWIX ) : ORIGIN = 0xDC000000 , LENGTH = 0x01000000
    /* DDR for c66x_1 for Scratch Memory [ size 48.00 MB ] */
    DDR_C66X_1_SCRATCH       ( RWIX ) : ORIGIN = 0xDD000000 , LENGTH = 0x03000000
}

SECTIONS
{
    .text:csl_entry:{}  > DDR_C66x_1
    .text:_c_int00 load > DDR_C66x_1 ALIGN(0x400)
    .text:   > DDR_C66x_1
    .stack:  > DDR_C66x_1
    .const:  > DDR_C66x_1
    .data:   > DDR_C66x_1
}

The A72 running Debian version 5.10.168-ti-arm64-r118 reports the following:

[ 1988.711638] remoteproc remoteproc12: powering up 4d80800000.dsp
[ 1988.711919] remoteproc remoteproc12: Booting fw image dsp12, size 48448
[ 1988.712618] remoteproc remoteproc12: Boot failed: -22

Would someone please help me understand what's going wrong?

6 months ago

0 Keerthy J 6 months ago

TI__Guru**** 167170 points

Hi Steve,

Could you try to insert your code into the default ipc_echo_test firmware that is known to work?
Failure can be due to memory mapping or some resource table issue.

Are you loading the firmware at U-Boot or Kernel?

- Keerthy

0 Steve Chung 6 months ago in reply to Keerthy J

Prodigy 10 points

Hello Keerthy and Happy Wednesday,

Many thanks for your time and expertise to help me understand what's going on. The firmware is loaded using the kernel provisions. Although I haven't had a chance to build the ipc_echo_test app (I have to rewrite its constructs to build within the TDA4VM's A72 cores), the /lib/firmware/vision_apps_eaik/vx_app_rtos_linux_c6x_1.out loads and runs great.

It's gotta be something in the memory map assignments in the cmd file? The C-source has been simplified to the most basic form and strongly typed (that I believe even a toaster could load and run) and yet, no joy...

#include <stdint.h>
#include <string.h>

#include <stddef.h>

#include <rsc_types.h>

#pragma DATA_SECTION(obs_data, ".data")
#pragma RETAIN(obs_data)

static float obs_data[1000];

int main(void) {
    int _count_i32 = 0;
    float _count_s = 0.0f;
    while (1) {
        _count_s = _count_s + 1.0f;
        obs_data[0] = _count_s;
        if (_count_i32 > 1000) {
        	_count_s = 0.0f;
        	_count_i32 = 0;
        }
    }
    return 0;
}

0 Steve Chung 6 months ago in reply to Steve Chung

Prodigy 10 points

Happy Wednesday evening Keerthy...

And, a happy one indeed! Figured it out (took long enough, though). The base address for the TDA4VM c66_0 device is not what's listed in the device tree file (k3-j721e-beagleboneai64.dtb, listed as 0xA610'0000), but it's the address encountered in the "./vision_apps/platform/j721e/rtos/c66x_1/linker_mem_map.cmd" file, listed as follows:

/* DDR for C66x_1 for Linux resource table [ size 1024 B ] */
DDR_C66x_1_RESOURCE_TABLE ( RWIX ) : ORIGIN = 0xA8100000 , LENGTH = 0x00000400
/* DDR for C66x_1 for code/data [ size 14.00 MB ] */
DDR_C66x_1 ( RWIX ) : ORIGIN = 0xA8200400 , LENGTH = 0x00DFFC00

Phew! Again, many thanks for stepping up to assist!

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TDA4VM: Boot failed: -22