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| author | Daniel Palmer <[email protected]> | 2026-03-09 19:51:10 +0900 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2026-04-14 13:25:13 -0600 |
| commit | c15a08b730e3399c26622c8cb083bf521039606a (patch) | |
| tree | a47160397449a3618643571088316891eb0555ff | |
| parent | 2df4926ca4f215d9b1a91d0c02c6fef49c845837 (diff) | |
doc: board: virt: m68k: Detail how to use debug uart
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 <[email protected]>
| -rw-r--r-- | doc/board/emulation/qemu-m68k.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/board/emulation/qemu-m68k.rst b/doc/board/emulation/qemu-m68k.rst index 6c4de54cf6a..2f2e6bd6444 100644 --- a/doc/board/emulation/qemu-m68k.rst +++ b/doc/board/emulation/qemu-m68k.rst @@ -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: |