nvbios: Document INIT_RESET_BEGUN and INIT_RESET_END #189
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Signal that the reset sequence has begun. This opcode signals that the software reset sequence has begun. Ordinarily, no actual operations are performed by the opcode. However it allows for possible software work arounds by devinit engines in software agents other than the VBIOS, such as the resman, FCODE, and EFI driver. This opcode is designed to be included in the devinit script immediately after the NV_PMC_ENABLE register has be written to put most engines into a reset state. Present on [core6,) Source: - https://download.nvidia.com/open-gpu-doc/Devinit/1/devinit.xml#INIT_RESET_BEGUN
Signal that the reset sequence has completed. This opcode signals that the software reset sequence has completed. Ordinarily, no actual operations are performed by the opcode. However it allows for possible software work arounds by devinit engines in software agents other than the VBIOS, such as the resman, FCODE, and EFI driver. This opcode is designed to be included in the devinit script immediately after the NV_PMC_ENABLE register has be written to take most of the engines out of the reset state. Present on [core6,) Source: - https://download.nvidia.com/open-gpu-doc/Devinit/1/devinit.xml#INIT_RESET_END
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This series adds support to nouveau for two opcodes seen on VBIOSes prior to the locked-down PMU taking over responsibility for executing devinit scripts.