Mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2026-06-13 15:03:58 +03:00
Code Issues Packages Projects Releases Wiki Activity

doc: board: virt: m68k: Detail how to use debug uart

Browse Source 
Add a paragraph to explain how to get the address of the goldfish
tty and use it as the debug uart. I think the address is actually
fixed right now but it might change in the future.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
This commit is contained in:
Daniel Palmer
2026-03-09 19:51:10 +09:00
committed by Tom Rini
parent 2df4926ca4
commit c15a08b730
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
doc/board/emulation/qemu-m68k.rst
View File

@@ -31,6 +31,16 @@ The minimal QEMU command line to get U-Boot up and running is:
Note that the `-nographic` option is used to redirect the console to stdio,
which connects to the emulated Goldfish TTY device.
Debugging U-Boot
----------------
If you need early debugging output enable `CONFIG_DEBUG_UART_GOLDFISH`.
The base address for the UART can be found by activating the QEMU monitor,
running `info qtree`, and then looking for the goldfish tty device and
taking the mmio address.
Baud rate doesn't matter.
Hardware Support
----------------
The following QEMU virt peripherals are supported in U-Boot: