How to use S10 SoC Uart1 through F2H AXI

[Jiayi_H_Intel]

Hi expert,

I am using S10 SoC board and want to use Uart1 to print some log from my fpga logic.

I connected my AXI4 master to HPS's F2H AXI slave. And the F2H AXI interface signal is correct. But minicom in arm linux doesn't print anything. Any ideas?

read:

read response:

write:

Open minicom:

$./minicom -D /dev/ttyS1 -b 115200

Nothing print.

What I have done for prerequisite:

rebuild u-boot.image and socfpga_stratix10_socdk.dtb with UART1 enabled.

driver is successfully loaded in arm boot log:

[IntelSupport]

Hello Jiayi_H_Intel,

First of all, can you send any message to PC via HPS UART1 from S10 SoC Linux?

Next, HPS UART bus width is 32 bit and low 8bit is valid.

According to address map below, the address of UART1 TX and RX buffer port is 0xFFC02100. But, AWADDR on your signal tap is 0xFFC02104.

UART Address Map

https://www.intel.com/content/www/us/en/programmable/hps/stratix-10/hps.html#pvo1505406672338.html

Please check AXI-4 format.

Thanks

[IntelSupport]

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