topic Re: Read/Write into FPGA connected via IFC in Layerscape

Read/Write via IFC

bladerunner1010 — Tue, 19 Jul 2022 11:51:46 GMT

Which address space should I use?

Pavel — Wed, 02 Feb 2022 08:03:39 GMT

NXP offers the LS1043ARDB board:

There is the LS1043ARDB Reference Manual:

There is the LS1043ARDB schematic:

Use this board as example for FPGA connection to the LS1043a.

bladerunner1010 — Tue, 19 Jul 2022 11:52:17 GMT

How do I read/write into memory of CPLD?

Pavel — Wed, 02 Feb 2022 13:17:40 GMT

See the follwoing NXP community about CPLD reading/writing under Linux:

bladerunner1010 — Tue, 19 Jul 2022 11:42:58 GMT

Pavel — Thu, 03 Feb 2022 05:15:06 GMT

Below is example for CPLD reading on the LS1043ARDB board under Linux:

root@TinyLinux:~# devmem

BusyBox v1.31.0 (2020-09-17 08:00:32 UTC) multi-call binary.

Usage: devmem ADDRESS [WIDTH [VALUE]]

root@TinyLinux:~# devmem 0x7fb00000 8

0x01

root@TinyLinux:~# devmem 0x7fb00001 8

0x04

root@TinyLinux:~# devmem 0x7fb00002 8

0x02

root@TinyLinux:~# devmem 0x7fb00003 8

0x00

root@TinyLinux:~# devmem 0x7fb0000f 8

0x01

root@TinyLinux:~#

bladerunner1010 — Tue, 19 Jul 2022 12:04:37 GMT

How do I read version number from CPLD?

Pavel — Tue, 22 Feb 2022 16:22:23 GMT

Base address of CPLD on the LS1043ARDB board is 7fb00000.

See the Section 6,1 in the LS1043ARDB Reference Manual: