Documentation/gpu/amdgpu/flashing.rst

File Facts

System

Linux kernel

Corpus path

Documentation/gpu/amdgpu/flashing.rst

Extension

.rst

Size

1263 bytes

Lines

34

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: documentation

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

=======================
 dGPU firmware flashing
=======================

IFWI
----
Flashing the dGPU integrated firmware image (IFWI) is supported by GPUs that
use the PSP to orchestrate the update (Navi3x or newer GPUs).
For supported GPUs, `amdgpu` will export a series of sysfs files that can be
used for the flash process.

The IFWI flash process is:

1. Ensure the IFWI image is intended for the dGPU on the system.
2. "Write" the IFWI image to the sysfs file `psp_vbflash`. This will stage the IFWI in memory.
3. "Read" from the `psp_vbflash` sysfs file to initiate the flash process.
4. Poll the `psp_vbflash_status` sysfs file to determine when the flash process completes.

USB-C PD F/W
------------
On GPUs that support flashing an updated USB-C PD firmware image, the process
is done using the `usbc_pd_fw` sysfs file.

* Reading the file will provide the current firmware version.
* Writing the name of a firmware payload stored in `/lib/firmware/amdgpu` to the sysfs file will initiate the flash process.

The firmware payload stored in `/lib/firmware/amdgpu` can be named any name
as long as it doesn't conflict with other existing binaries that are used by
`amdgpu`.

sysfs files
-----------
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.