Re: [PATCH rc2 14/25] target/avr: Add section about AVR into QEMU documentation

[Thomas Huth <thuth@redhat.com>]

On 24/01/2020 01.51, Philippe Mathieu-Daudé wrote:
> From: Michael Rolnik <mrolnik@gmail.com>
> 
> Signed-off-by: Michael Rolnik <mrolnik@gmail.com>
> Message-Id: <20200118191416.19934-16-mrolnik@gmail.com>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> [PMD: Fixed typos]
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> rc2: Fixed typos, s/sample/Arduino/, removed -serial section (thuth)
> ---
>  qemu-doc.texi | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/qemu-doc.texi b/qemu-doc.texi
> index 39f950471f..89df1d325e 100644
> --- a/qemu-doc.texi
> +++ b/qemu-doc.texi
> @@ -1741,6 +1741,7 @@ differences are mentioned in the following sections.
>  * Microblaze System emulator::
>  * SH4 System emulator::
>  * Xtensa System emulator::
> +* AVR System emulator::
>  @end menu
>  
>  @node PowerPC System emulator
> @@ -2514,6 +2515,56 @@ so should only be used with trusted guest OS.
>  
>  @c man end
>  
> +@node AVR System emulator
> +@section AVR System emulator
> +@cindex system emulation (AVR)
> +
> +Use the executable @file{qemu-system-avr} to emulates a AVR 8 bit based machine
> +having one for the following cores: avr1, avr2, avr25, avr3, avr31, avr35, avr4,
> +avr5, avr51, avr6, avrtiny, xmega2, xmega3, xmega4, xmega5, xmega6 and xmega7.
> +
> +As for now it supports few Arduino boards for educational and testing purposes.
> +These boards use a ATmega controller, which model is limited to USART & 16 bit
> +timer devices, enought to run FreeRTOS based applications (like this @url{https://github.com/seharris/qemu-avr-tests/blob/master/free-rtos/Demo/AVR_ATMega2560_GCC/demo.elf,,demo})
> +
> +Following are examples of possible usages, assuming program.elf is compiled for
> +AVR cpu
> +@itemize
> +
> +@item Continuous non interrupted execution
> +@example
> +qemu-system-avr -kernel program.elf
> +@end example
> +
> +@item Continuous non interrupted execution with serial output into telnet window
> +@example
> +qemu-system-avr -kernel program.elf -serial tcp::5678,server,nowait -nographic
> +@end example
> +and then in another shell
> +@example
> +telnet localhost 5678
> +@end example
> +
> +@item Debugging wit GDB debugger
> +@example
> +qemu-system-avr -kernel program.elf -s -S
> +@end example
> +and then in another shell
> +@example
> +avr-gdb program.elf
> +@end example
> +and then within GDB shell
> +@example
> +target remote :1234
> +@end example
> +
> +@item Print out executed instructions
> +@example
> +qemu-system-avr -kernel program.elf -d in_asm

If you don't have a default board anymore, I think you need to list -M
here, too.
And didn't you mention that -kernel is not working anyway? Do you need
to replace it with -bios ?

 Thomas