[PATCH] Added Getentropy() support to beagle BSP

[Udit agarwal]

On Thu, Mar 15, 2018 at 11:34 AM, Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

>
>
> On 15/03/18 05:56, Udit agarwal wrote:
>
>> +/* TRNG Register */
>> +
>> +/* RNG base address */
>>
>
> Is the module name TRNG or RNG?
>
It's TRNG. I'll correct this.

>
> +#define RNG_BASE 0x48310000
>> +/* RNG clock control */
>> +#define CM_PER_RNG_CLKCTRL (AM335X_CM_PER_ADDR | (9 << 4))
>>
>
> This define is probably not for the TRNG register block. Should it move
> the corresponding register block?
>
This define is to enable clock for TRNG module by setting the bit in the
main clock register. Should i place this define with other CM definitions?

>
> +/* rng module clock status bits */
>> +#define AM335X_CLK_RNG_BIT_MASK (0x30000)
>> +/* Offset from RNG base for output ready flag */
>> +#define RNG_STATUS_RDY (1u <<  0)
>> +/* Offset from RNG base for FRO related error */
>> +#define RNG_STATUS_ERR (1u <<  1)
>> +/* Offset from RNG base for clock status */
>> +#define RNG_STATUS_CLK (1u << 31)
>>
>
> Are these offsets or bits?
>
I should have probably marked them as mask bits.

>
> +/* enable module */
>> +#define AM335X_RNG_ENABLE (1 << 10)
>> +
>>
>
> --
> Sebastian Huber, embedded brains GmbH
>
> Address : Dornierstr. 4, D-82178 Puchheim, Germany
> Phone   : +49 89 189 47 41-16
> Fax     : +49 89 189 47 41-09
> E-Mail  : sebastian.huber at embedded-brains.de
> PGP     : Public key available on request.
>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>
>
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