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feat: add support for flashing emulation configs on AGX devkits #209

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feat: add support for flashing emulation configs on AGX devkits #209

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4 changes: 4 additions & 0 deletions flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,10 @@
value = c;
}) [
{ som = "orin-agx"; carrierBoard = "devkit"; }
{ som = "orin-agx"; carrierBoard = "devkit-as-nano-4gb"; }
{ som = "orin-agx"; carrierBoard = "devkit-as-nano-8gb"; }
{ som = "orin-agx"; carrierBoard = "devkit-as-nx-8gb"; }
{ som = "orin-agx"; carrierBoard = "devkit-as-nx-16gb"; }
{ som = "orin-agx-industrial"; carrierBoard = "devkit"; }
{ som = "orin-nx"; carrierBoard = "devkit"; }
{ som = "orin-nano"; carrierBoard = "devkit"; }
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5 changes: 1 addition & 4 deletions modules/default.nix
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Expand Up @@ -80,10 +80,7 @@ in
};

carrierBoard = mkOption {
type = types.enum [
"generic"
"devkit"
];
type = types.enum [ "generic" "devkit" "devkit-as-nx-8gb" "devkit-as-nx-16gb" "devkit-as-nano-8gb" "devkit-as-nano-4gb" ];
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@elliotberman elliotberman Oct 15, 2025

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It's not really proper to make this a characteristic of the carrierBoard, since it seems to be more a property of the SOM.

We've currently have support for "super" mode for the nx/nano. What if we deprecated the super option and introduce new option: somPower (exact name up to you) which is an enum that supports "default", "super", "nx-8gb", "nx-16gb", etc.

default = "generic";
description = ''
Jetson carrier board to target. Can be set to "generic" to target a generic jetson carrier board, but some things may not work.
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11 changes: 10 additions & 1 deletion modules/devices.nix
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Expand Up @@ -61,6 +61,15 @@ in

hardware.nvidia-jetpack.flashScriptOverrides =
let
# The AGX supports Emulating weaker Jetson SoMs on the devkit:
# https://developer.ridgerun.com/wiki/index.php/NVIDIA_Jetson_Orin/Flashing_commands_for_emulation#Flashing_the_board
agxDevkitTargetBoards = {
"devkit" = "jetson-agx-orin-devkit";
"devkit-as-nx-8gb" = "jetson-agx-orin-devkit-as-nx-8gb";
"devkit-as-nx-16gb" = "jetson-agx-orin-devkit-as-nx-16gb";
"devkit-as-nano-8gb" = "jetson-agx-orin-devkit-as-nano8gb";
"devkit-as-nano-4gb" = "jetson-agx-orin-devkit-as-nano4gb";
};
# Remove unnecessary partitions to make it more like
# flash_t194_uefi_sdmmc_min.xml, except also keep the A/B slots on each
# partition
Expand Down Expand Up @@ -96,7 +105,7 @@ in
in
mkMerge [
(mkIf (cfg.som == "orin-agx") {
targetBoard = mkDefault "jetson-agx-orin-devkit";
targetBoard = mkDefault (agxDevkitTargetBoards."${cfg.carrierBoard}");
# We don't flash the sdmmc with kernel/initrd/etc at all. Just let it be a
# regular NixOS machine instead of having some weird partition structure.
partitionTemplate = mkDefault "${pkgs.nvidia-jetpack.bspSrc}/bootloader/t186ref/cfg/flash_t234_qspi.xml";
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