1 ======================= 2 dGPU firmware flashing 3 ======================= 4 5 IFWI 6 ---- 7 Flashing the dGPU integrated firmware image (IFWI) is supported by GPUs that 8 use the PSP to orchestrate the update (Navi3x or newer GPUs). 9 For supported GPUs, `amdgpu` will export a series of sysfs files that can be 10 used for the flash process. 11 12 The IFWI flash process is: 13 14 1. Ensure the IFWI image is intended for the dGPU on the system. 15 2. "Write" the IFWI image to the sysfs file `psp_vbflash`. This will stage the IFWI in memory. 16 3. "Read" from the `psp_vbflash` sysfs file to initiate the flash process. 17 4. Poll the `psp_vbflash_status` sysfs file to determine when the flash process completes. 18 19 USB-C PD F/W 20 ------------ 21 On GPUs that support flashing an updated USB-C PD firmware image, the process 22 is done using the `usbc_pd_fw` sysfs file. 23 24 * Reading the file will provide the current firmware version. 25 * Writing the name of a firmware payload stored in `/lib/firmware/amdgpu` to the sysfs file will initiate the flash process. 26 27 The firmware payload stored in `/lib/firmware/amdgpu` can be named any name 28 as long as it doesn't conflict with other existing binaries that are used by 29 `amdgpu`. 30 31 sysfs files 32 ----------- 33 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
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