9f73476b37
The new 'dde_linux' repository will host device drivers ported from the Linux kernel. In contrast to the original 'linux_drivers' repository, 'dde_linux' does not contain any 3rd-party source code. To download the Linux kernel source code and extract the drivers, execute the 'make prepare' rule of the top-level Makefile. The initial version of the 'dde_linux' repository comes with an USB driver. The porting methodology follows the path of the Intel GEM port. Instead of attempting to provide a generic Linux environment that works across drivers, each driver comes with a specially tailored DDE. The DDE consists of Genode-specific implementations of Linux API functions as declared in 'lx_emul.h'. Most of these functions are dummies that must merely be provided to resolve dependencies at the linking stage. They are called by unused code-paths. As of now, the USB driver support UHCI, EHCI on the x86_32 platform. I exposes USB HID devices and USB storage devices via Genode's input-session and block-session respectively. The USB driver is accompanied with two run scripts 'run/usb_hid.run' and 'run/usb_storage.run'.
76 lines
1.3 KiB
Plaintext
76 lines
1.3 KiB
Plaintext
#
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# Build
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#
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set build_components {
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core init
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drivers/timer
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drivers/pci
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drivers/usb
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test/input
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}
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build $build_components
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create_boot_directory
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#
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# Generate config
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#
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append config {
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<config>
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<parent-provides>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="CAP"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="CPU"/>
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<service name="LOG"/>
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<service name="SIGNAL" />
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</parent-provides>
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<default-route>
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<any-service> <parent/> <any-child/> </any-service>
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</default-route>
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<start name="pci_drv">
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<resource name="RAM" quantum="1M"/>
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<provides><service name="PCI"/></provides>
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</start>
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<start name="timer">
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<resource name="RAM" quantum="1M"/>
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<provides><service name="Timer"/></provides>
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</start>
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<start name="usb_drv">
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<resource name="RAM" quantum="3M"/>
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<provides><service name="Input"/></provides>
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<config>
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<hid/>
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</config>
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</start>
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<start name="test-input">
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<resource name="RAM" quantum="1M"/>
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</start>
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</config>}
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install_config $config
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#
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# Boot modules
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#
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# generic modules
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set boot_modules {
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core init timer pci_drv usb_drv test-input
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}
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build_boot_image $boot_modules
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append qemu_args " -m 256 -usb -usbdevice mouse -usbdevice keyboard"
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run_genode_until forever
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