Add AES plugin for NexysA7

[roman3017]

• add aes plugin
• change number of gpio pins to 32
• fix cpuCount
• add audio and video sections to readme file

[Dolu1990]

Thanks ^^

About the AES plugin, i have some local change to properly enable it, i just need a bit more def to polish it :)

Else @svancau and me are trying to update to linux 5.10

[roman3017]

That is good to know. I was hoping to see how much speed up comes from HW acceleration so I have also started to look at crypto driver. But will wait for you. With NO acceleration I am getting 1MB/s:

rroot@buildroot:~# openssl speed -elapsed -evp aes-128-cbc                                                                              
You have chosen to measure elapsed time instead of user CPU time.                                                                      
Doing aes-128-cbc for 3s on 16 size blocks: 106841 aes-128-cbc's in 3.00s                                                              
Doing aes-128-cbc for 3s on 64 size blocks: 41226 aes-128-cbc's in 3.00s                                                               
Doing aes-128-cbc for 3s on 256 size blocks: 12172 aes-128-cbc's in 3.01s                                                              
Doing aes-128-cbc for 3s on 1024 size blocks: 3212 aes-128-cbc's in 3.00s                                                              
Doing aes-128-cbc for 3s on 8192 size blocks: 401 aes-128-cbc's in 3.01s                                                               
Doing aes-128-cbc for 3s on 16384 size blocks: 201 aes-128-cbc's in 3.00s                                                              
OpenSSL 1.1.1f  31 Mar 2020                                                                                                            
built on: Sun Nov 15 01:31:47 2020 UTC                                                                                                 
options:bn(64,32) rc4(char) des(long) aes(partial) idea(int) blowfish(ptr)                                                             
compiler: riscv32-buildroot-linux-gnu-gcc -fPIC -pthread -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -D_LARGEFIL4
The 'numbers' are in 1000s of bytes per second processed.                                                                              
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes                                             
aes-128-cbc        569.82k      879.49k     1035.23k     1096.36k     1091.36k     1097.73k                                                                            

Updating to Linux 5.10 is really nice too.

[Dolu1990]

@roman3017

type                   16 bytes     64 bytes    256 bytes   1024 bytes     8192 bytes  16384 bytes
aes-256-cbc       1099.77k     2320.65k     3164.16k     3484.67k    3528.02k     3511.64k

:D

[roman3017]

Very nice, more than 3x speedup.

[mithro]

FYI - @bunnie @tcal-x

[Dolu1990]

@roman3017 and in 256 XD

[roman3017]

I see, so it is 4x speed up for aes-256-cbc. Here is performance with no acceleration for comparison:

type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes                              
aes-256-cbc        492.58k      700.22k      796.41k      831.49k      830.09k      832.81k                             

[Dolu1990]

just got some NaxRiscv number (64bits 2 alu 16 KB i$ 16 KB d$ in debian)=>

openssl speed -elapsed -evp aes-128-cbc aes-256-cbc
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-256-cbc       1399.56k     1659.83k     1744.20k     1764.95k     1771.76k     1769.04k
AES-128-CBC       1645.07k     2057.95k     2208.74k     2237.15k     2245.32k     2248.04k

[roman3017]

Cool, that's really impressive.