Hi All,
I'm new to the ML.
I've started to port Qemu to a new HW based on ARM926EJ-S core.
So far so good, I've implemented some basic HW (INT controller, System
register, UART, …)
I'd like to redirect the virtual serial port not to the current
default stdin/stdout of the Qemu
application, but to a (Unix) socket.
I'm not sure I'm looking at the proper solution, so any advice is welcomed.
AFAIU, I may define a Unix socket with the command line:
-chardev socket,id=sersok,path=~user/serialsocket,server,nowait
and assign the new virtual serial device (named new-uart hereafter):
-device new-uart,chardev=sersock
Is it the proper way to map the new virtual UART to the Unix socket?
My main question is about the driver implementation:
For the first implementation, I simply used
* qdev_init_chardev
* qemu_chr_add_handlers
* qemu_chr_fe_write
calls to implement the virtual serial port. It works fine to print out
and read from the standard I/O, but I'm not sure to understand what I should
implement to use the chardev created from the command line rather than the
default standard I/O.
qdev_init_chardev() seems somewhat deprecated, as the implementation
contains the following comment:
/* FIXME: This function needs to go away: use chardev properties! */
Should I drop qdev_init_chardev() for another API?
I've looked at several examples on virtual serial port in existing Qemu drivers,
but I don't know what is the best and simplest way to go.
Any advice would be greatly appreciated,
Thanks,
Manu.
