AMDPM(4) - Device Drivers Manual # AMDPM(4) - Device Drivers Manual
NAME # amdpm - AMD-756/766/768/8111 Power Management and SMBus controller
SYNOPSIS # amdpm* at pci? iic* at amdpm?
DESCRIPTION # The amdpm driver provides support for the AMD-756/766/768/8111 Power Management controller.
The RNG function of the AMD-768/8111 Power Management controller is supported. Data generated by the RNG get fed into the pool of the random(4) device.
The SMBus host interface of the AMD-756/766/768/8111 Power Management controller and NVIDIA nForce 1 chipset are also supported.
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RANDOM(4) - Device Drivers Manual # RANDOM(4) - Device Drivers Manual
NAME # random, urandom - random data source device
DESCRIPTION # The urandom device produces high quality pseudo-random output data without ever blocking.
Entropy data stored previously is provided to the kernel during the boot sequence and used as inner-state of a stream cipher. High quality data is available immediately upon kernel startup. System activity (such as disk, network, and clock device interrupts), and hardware random generator output is collected, whitened with a crc and hash, then periodically folded together with stream cipher inner-state and outer-state to create a new inner state.
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