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platform_drv: make devices ROM name configureable

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Fix genodelabs/genode#4504
This commit is contained in:
Stefan Kalkowski 2022-05-11 14:27:09 +02:00 committed by Christian Helmuth
parent 438870e223
commit 14f192fb00
2 changed files with 21 additions and 1 deletions
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17
repos/os/src/drivers/platform/README
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@ -1,5 +1,22 @@
This directory contains the implementation of Genode's platform driver. This directory contains the implementation of Genode's platform driver.
Devices ROM
-----------
The platform driver knows which devices exist, as well as what resources
they need by parsing XML information from a devices ROM. This ROM might be
a boot module written by a system integrator, or is dynamically produced
after investigating ACPI and PCI(*) information. The devices ROM name can be
defined by setting the "devices_rom" attribute in the config of the
platform driver:
! <config devices_rom="my_devices">
! ...
! </config>
If the attribute isn't set, the platform driver asks for a ROM called
"devices" by default.
Behavior Behavior
-------- --------

5
repos/os/src/drivers/platform/common.h
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@ -20,7 +20,8 @@ class Driver::Common
private: private:
Env & _env; Env & _env;
Attached_rom_dataspace _devices_rom { _env, "devices" }; String<64> _rom_name;
Attached_rom_dataspace _devices_rom { _env, _rom_name.string() };
Reporter _cfg_reporter { _env, "config" }; Reporter _cfg_reporter { _env, "config" };
Reporter _dev_reporter { _env, "devices" }; Reporter _dev_reporter { _env, "devices" };
Heap _heap { _env.ram(), _env.rm() }; Heap _heap { _env.ram(), _env.rm() };
@ -82,6 +83,8 @@ Driver::Common::Common(Genode::Env & env,
Attached_rom_dataspace & config_rom) Attached_rom_dataspace & config_rom)
: :
_env(env), _env(env),
_rom_name(config_rom.xml().attribute_value("devices_rom",
String<64>("devices"))),
_root(_env, _sliced_heap, config_rom, _devices) _root(_env, _sliced_heap, config_rom, _devices)
{ {
_handle_devices(); _handle_devices();