qemu/monitor
Daniel Henrique Barboza bf353ad555 qmp/hmp, device_tree.c: introduce dumpdtb
To save the FDT blob we have the '-machine dumpdtb=<file>' property.
With this property set, the machine saves the FDT in <file> and exit.
The created file can then be converted to plain text dts format using
'dtc'.

There's nothing particularly sophisticated into saving the FDT that
can't be done with the machine at any state, as long as the machine has
a valid FDT to be saved.

The 'dumpdtb' command receives a 'filename' parameter and, if the FDT is
available via current_machine->fdt, save it in dtb format to 'filename'.
In short, this is a '-machine dumpdtb' that can be fired on demand via
QMP/HMP.

This command will always be executed in-band (i.e. holding BQL),
avoiding potential race conditions with machines that might change the
FDT during runtime (e.g. PowerPC 'pseries' machine).

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Alistair Francis <alistair.francis@wdc.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220926173855.1159396-2-danielhb413@gmail.com>
2022-10-17 16:15:10 -03:00
..
hmp-cmds.c hmp: add virtio commands 2022-10-09 16:38:45 -04:00
hmp.c monitor: expose monitor_puts to rest of code 2022-10-06 11:53:40 +01:00
meson.build meson: add spice_headers dependency. 2020-10-15 11:14:40 +02:00
misc.c qmp/hmp, device_tree.c: introduce dumpdtb 2022-10-17 16:15:10 -03:00
monitor-internal.h monitor: expose monitor_puts to rest of code 2022-10-06 11:53:40 +01:00
monitor.c Move error_printf_unless_qmp() with monitor unit 2022-04-21 17:09:09 +04:00
qmp-cmds-control.c qapi: Implement deprecated-output=hide for QMP introspection 2021-03-19 16:05:11 +01:00
qmp-cmds.c jobs: group together API calls under the same job lock 2022-10-07 12:11:41 +02:00
qmp.c monitor/qmp: fix race on CHR_EVENT_CLOSED without OOB 2021-05-12 17:29:11 +02:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h