motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

semihosting: add qemu_semihosting_console_inc for SYS_READC

Browse source 
Provides a blocking call to read a character from the console using
semihosting.chardev, if specified. This takes some careful command
line options to use stdio successfully as the serial ports, monitor
and semihost all want to use stdio. Here's a sample set of command
line options which share stdio between semihost, monitor and serial
ports:

	qemu \
	-chardev stdio,mux=on,id=stdio0 \
	-serial chardev:stdio0 \
	-semihosting-config enable=on,chardev=stdio0 \
	-mon chardev=stdio0,mode=readline

This creates a chardev hooked to stdio and then connects all of the
subsystems to it. A shorter mechanism would be good to hear about.

Signed-off-by: Keith Packard <keithp@keithp.com>
Message-Id: <20191104204230.12249-1-keithp@keithp.com>
[AJB: fixed up deadlock, minor commit title reword]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Keith Packard 2019-11-04 12:42:30 -08:00 • committed by Alex Bennée
parent 4ff5ef9e91
commit 8de702cb67
7 changed files with 134 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/hw/semihosting/semihost.h
View file

@ -56,6 +56,9 @@ static inline Chardev *semihosting_get_chardev(void)
{
return NULL;
}
static inline void qemu_semihosting_console_init(void)
{
}
#else /* !CONFIG_USER_ONLY */
bool semihosting_enabled(void);
SemihostingTarget semihosting_get_target(void);
@ -68,6 +71,7 @@ Chardev *semihosting_get_chardev(void);
void qemu_semihosting_enable(void);
int qemu_semihosting_config_options(const char *opt);
void qemu_semihosting_connect_chardevs(void);
void qemu_semihosting_console_init(void);
#endif /* CONFIG_USER_ONLY */
#endif /* SEMIHOST_H */