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Feature #331

open

Add detail wiki how to use oxford serial card?

Added by xinhua wang 5 months ago. Updated 5 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
12/30/2021
Due date:
% Done:

0%

Estimated time:
Affected versions:
Needs backport to:
Affected hardware:
Affected OS:

Description

Add detail wiki how to use oxford serial card?

For example, early pci settings.. how to determine what mmio to use, etc

for the green one, I only see

[ 0.364949] 0000:01:00.0: ttyS4 at MMIO 0x83401000 (irq = 16, base_baud = 4000000) is a 16C950/954
[ 0.365132] 0000:01:00.0: ttyS5 at MMIO 0x83401200 (irq = 16, base_baud = 4000000) is a 16C950/954

then I am lost at what to do, I tried plug in 0x83401000, and select 0 index but it does not do anything

I tested the ttyS4 with another computer and my cable, adapter works.

Actions #1

Updated by xinhua wang 5 months ago

CONFIG_EARLY_PCI_MMIO_BASE

cat /proc/tty/driver/serial

kernel /boot/vmlinuz-2.6.32-xx-dhs3 root=/dev/sda2 console=uart8250,mmio,0xdf601000,115200n8 panic=5. The kernel logs are then sent to the external UART,

in menuconfig. If you can boot to OS with that plaform, with the serial
card installed, get the location of PCIe rootport (aka. parent bridge)
for OxPCIe card with lspci -vv command.

I tried research but is lost

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