We are experiencing issues while booting the J784S4 EVM board using prebuilt images. We have attached the detailed build procedure followed, along with the error logs observed during the boot process of the J784S4 board, for your reference. Please share the recommended procedure to create a bootable SD card using the prebuilt images.

Procedure - 1. Site followed - https://sig.centos.org/automotive/provisioning/flashing-texas- instruments/

2. Prebuilt image –

1. https://download.autosd.sig.centos.org/AutoSD-9/nightly/TI/auto- osbuild-j784s4evm-autosd9-qa-regular-aarch64-2208122337.e5a9b30b.raw.xz

3. To uncompress the image - $ xz -d =/home/sanskruti/Downloads/auto-osbuild- j784s4evm-autosd9-qa-regular-aarch64-2208122337.e5a9b30b.raw.xz

4. To flash image to sd card - sudo dd if=/home/sanskruti/Downloads/auto-osbuild- j784s4evm-autosd9-qa-regular-aarch64-2208122337.e5a9b30b.raw of=/dev/mmcblk0p bs=4M status=progress conv=fsync

Output - (Logs after plug in the SD card to board) U-Boot SPL 2025.07-3.el9 (Sep 29 2025 - 00:00:00 +0000) SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)') Initialized 4 DRAM controllers SPL initial stack usage: 13456 bytes Trying to boot from MMC2 Loading Environment from nowhere... OK Starting ATF on ARM64 core...

NOTICE: BL31: v2.13.0(debug): NOTICE: BL31: Built : 00:00:00, Sep 29 2025 INFO: GICv3 without legacy support detected. INFO: ARM GICv3 driver initialized in EL3 INFO: Maximum SPI INTID supported: 991 INFO: SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')

INFO: BL31: Initializing runtime services INFO: BL31: cortex_a72: CPU workaround for erratum 1319367 was applied INFO: BL31: cortex_a72: CPU workaround for CVE 2018_3639 was applied INFO: BL31: cortex_a72: CPU workaround for CVE 2022_23960 was applied INFO: BL31: Initializing BL32 I/TC: I/TC: OP-TEE version: Unknown_4.6 (gcc version 12.1.1 20220507 (Red Hat Cross 12.1.1-1) (GCC)) #1 Mon Sep 24 I/TC: WARNING: This OP-TEE configuration might be insecure! I/TC: WARNING: Please check https://optee.readthedocs.io/en/latest/architecture/porting_guidelines.html I/TC: Primary CPU initializing I/TC: GIC redistributor base address not provided I/TC: Assuming default GIC group status and modifier I/TC: SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)') I/TC: Activated SA2UL device I/TC: Fixing SA2UL firewall owner for GP device I/TC: Enabled firewalls for SA2UL TRNG device I/TC: SA2UL TRNG initialized I/TC: SA2UL Drivers initialized I/TC: HUK Initialized I/TC: Primary CPU switching to normal world boot INFO: BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x80080000 INFO: SPSR = 0x3c9

U-Boot SPL 2025.07-3.el9 (Sep 29 2025 - 00:00:00 +0000) SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)') Trying to boot from MMC2

U-Boot 2025.07-3.el9 (Sep 29 2025 - 00:00:00 +0000)

SoC: J784S4 SR1.0 GP Model: Texas Instruments J784S4 EVM DRAM: 2 GiB (total 32 GiB) cdns3_bind: unsupported dr_mode Core: 135 devices, 34 uclasses, devicetree: separate Flash: 0 Bytes MMC: mmc@4f80000: 0, mmc@4fb0000: 1 Loading Environment from nowhere... OK In: serial@2880000 Out: serial@2880000 Err: serial@2880000 am65_cpsw_nuss ethernet@46000000: K3 CPSW: nuss_ver: 0x6BA02102 cpsw_ver: 0x6BA82102 ale_ver: 0x00293904 Po1 Net: eth0: ethernet@46000000port@1 Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc1 is current device SD/MMC found on device 1 Failed to load 'uEnv.txt' Scanning for bootflows in all bootdevs Seq Method State Uclass Part Name Filename --- ----------- ------ -------- ---- ------------------------ ---------------- Scanning global bootmeth 'efi_mgr': Cannot persist EFI variables without system partition 0 efi_mgr ready (none) 0 <NULL>

** Booting bootflow '<NULL>' with efi_mgr

Booting: Label: mmc 1 Device path: /VenHw(e61d73b9-a384-4acc-aeab- 82e828f3628b,0000000000000000)/VenHw(e61d)

Starting ukiboot version 0.2.0 Unable to find ukibootctl partition Unable to find active slot Error: Unable to boot (Not Found) ## Application failed, r = 14 Boot failed (err=-14) Scanning bootdev 'mmc@4fb0000.bootdev': 1 efi ready mmc 1 mmc@4fb0000.bootdev.part_ /EFI/BOOT/BOOTAA64.EFI ** Booting bootflow 'mmc@4fb0000.bootdev.part_1' with efi Booting /\EFI\BOOT\BOOTAA64.EFI Starting ukiboot version 0.2.0 Unable to find ukibootctl partition Unable to find active slot Error: Unable to boot (Not Found) ## Application failed, r = 14 Boot failed (err=-22) Scanning bootdev 'mmc@4f80000.bootdev': No USB controllers found Scanning bootdev 'port@1.bootdev':

k3-navss-ringacc ringacc@2b800000: Ring Accelerator probed rings:286, gp- rings[96,20] sci-dev-id:328

k3-navss-ringacc ringacc@2b800000: dma-ring-reset-quirk: disabled am65_cpsw_nuss_port ethernet@46000000port@1: K3 CPSW: rflow_id_base: 3 ethernet@46000000port@1 Waiting for PHY auto negotiation to complete......... TIMEOUT !

am65_cpsw_nuss_port ethernet@46000000port@1: phy_startup failed am65_cpsw_nuss_port ethernet@46000000port@1: am65_cpsw_start end error BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4 BOOTP broadcast 5 BOOTP broadcast 6 BOOTP broadcast 7 BOOTP broadcast 8 BOOTP broadcast 9 BOOTP broadcast 10 BOOTP broadcast 11 BOOTP broadcast 12 BOOTP broadcast 13 BOOTP broadcast 14 BOOTP broadcast 15 BOOTP broadcast 16 BOOTP broadcast 17

Retry time exceeded; starting again Scanning bootdev 'port@1.bootdev': am65_cpsw_nuss_port ethernet@46000000port@1: K3 CPSW: rflow_id_base: 3 ethernet@46000000port@1 Waiting for PHY auto negotiation to complete......... TIMEOUT ! am65_cpsw_nuss_port ethernet@46000000port@1: phy_startup failed am65_cpsw_nuss_port ethernet@46000000port@1: am65_cpsw_start end error BOOTP broadcast 1

BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4 BOOTP broadcast 5 BOOTP broadcast 6 BOOTP broadcast 7 BOOTP broadcast 8 BOOTP broadcast 9 BOOTP broadcast 10 BOOTP broadcast 11 BOOTP broadcast 12 BOOTP broadcast 13 BOOTP broadcast 14 BOOTP broadcast 15 BOOTP broadcast 16 BOOTP broadcast 17

Retry time exceeded; starting again No more bootdevs --- ----------- ------ -------- ---- ------------------------ ---------------- (2 bootflows, 2 valid) =>