On Friday, January 31, 2020, Aleksandar Markovic <
aleksandar.markovic@rt-rk.com> wrote:
> From: Michael Rolnik <mrolnik@gmail.com>
>
> Explains basic ways of using AVR target in QEMU.
>
> 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>
> Signed-off-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
> ---
> qemu-doc.texi | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
>
>
Reviewed-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
> diff --git a/qemu-doc.texi b/qemu-doc.texi
> index 2328e7e..aaf4e54 100644
> --- a/qemu-doc.texi
> +++ b/qemu-doc.texi
> @@ -1723,6 +1723,7 @@ 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
> @@ -2496,6 +2497,56 @@ 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 demo.elf is compiled
> for
> +AVR cpu
> +@itemize
> +
> +@item Continuous non interrupted execution
> +@example
> +qemu-system-avr -machine mega2560 -bios demo.elf
> +@end example
> +
> +@item Continuous non interrupted execution with serial output into telnet
> window
> +@example
> +qemu-system-avr -machine mega2560 -bios demo.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 -machine mega2560 -bios demo.elf -s -S
> +@end example
> +and then in another shell
> +@example
> +avr-gdb demo.elf
> +@end example
> +and then within GDB shell
> +@example
> +target remote :1234
> +@end example
> +
> +@item Print out executed instructions
> +@example
> +qemu-system-avr -machine mega2560 -bios demo.elf -d in_asm
> +@end example
> +
> +@end itemize
> +
> @node QEMU User space emulator
> @chapter QEMU User space emulator
>
> --
> 2.7.4
>
>