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fdt: move dumpdtb interpretation code to device_tree.c
The dumpdtb code can be useful in more places than just for e500. Move itto a generic place.
Signed-off-by: Alexander Graf <agraf@suse.de>
device_tree: Add support for reading device tree properties
Add support for reading device tree properties (both genericand single-cell ones) to QEMU's convenience wrapper layer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>Reviewed-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
dt: make setprop argument static
Whatever we pass in to qemu_devtree_setprop to put into the device treewill not get modified by that function, so it can easily be declared const.
Signed-off-by: Alexander Graf <agraf@suse.de>Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
dt: add helpers for multi-cell adds
We have device tree helpers that allow us to create single cell (u32)wide properties. However, when creating properties that contain an array ofcells, we need to jump through hoops, manually passing in an array withconverted endianness....
dt: add helper for phandle references
Phandles are the fancy device tree name for "pointer to another node".To create a phandle property, we most likely want to reference to thenode we're pointing to by its path. So create a helper that allowsus to do so....
dt: add helper for phandle enumeration
This patch adds a helper to search for a node's phandle by its path. Thisis especially useful when the phandle is part of an array, not just a singlecell in which case qemu_devtree_setprop_phandle would be the easy choice....
dt: add helper for empty dt creation
We want to get rid of the concept of loading an external device tree and insteadgenerate our own. However, to do this we need to also create a device treetemplate programatically.
This patch adds a helper to create an empty device tree in memory....
dt: add helper for phandle allocation
Phandle references work by having 2 pieces:
- a "phandle" 1-cell property in the device tree node - a reference to the same value in a property we want to point to the other node
To generate the 1-cell property, we need an allocation mechanism that...
dt: add helper for 64bit cell adds
Some times in the device tree, we find an array of 2 u32 cells thatreally are a single u64 value. This patch adds a helper to make thecreation of these easy.
device tree: add add_subnode command
We want to be able to create subnodes in our device tree, so export it throughthe qemu device tree abstraction framework.
device tree: add nop_node
We have a qemu internal abstraction layer on FDT. While I'm not fully convincedwe need it at all, it's missing the nop_node functionality that we now needon e500. So let's add it and think about the general future of that API later....
Allow qemu_devtree_setprop() to take arbitrary values
Currently qemu_devtree_setprop() expects the new property value to begiven as a uint32_t *. While property values consisting of u32s arecommon, in general they can have any bytestring value.
Therefore, this patch alters the function to take a void * instead,...
Wean device tree code off phys_ram_base.
Signed-off-by: Paul Brook <paul@codesourcery.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7068 c046a42c-6fe2-441c-8c8c-71466251a162
Implement device tree support needed for Bamboo emulation
To implement the -kernel, -initrd, and -append options, 4xx board emulationmust load the guest kernel as if firmware had loaded it. Where u-boot would bethe firmware, we must load the flat device tree into memory and set key fields...