path: root/device_tree.c
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2013-12-20device_tree: qemu_fdt_setprop: Rename val_array argPeter Crosthwaite
Looking at the implementation, this doesn't really have a lot to do with arrays. Its just a pointer to a buffer and is passed through to the wrapped fn (qemu_fdt_setprop) unchanged. So rename to make it consistent with libfdt, which in the wrapped function just calls it "val". Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-12-20device_tree: s/qemu_devtree/qemu_fdt globallyPeter Crosthwaite
The qemu_devtree API is a wrapper around the fdt_ set of APIs. Rename accordingly. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> [agraf: also convert hw/arm/virt.c] Signed-off-by: Alexander Graf <agraf@suse.de>
2013-12-10device_tree.c: Terminate the empty reservemap in create_device_tree()Peter Maydell
Device trees created with create_device_tree() may not have any entries in their reservemap, because the FDT API requires that the reservemap is completed before any FDT nodes are added, and create_device_tree() itself creates a node. However we were not calling fdt_finish_reservemap(), which meant that there was no terminator in the reservemap list and whatever happened to be at the start of the FDT data section would end up being interpreted as reservemap entries. Avoid this by calling fdt_finish_reservemap() to add the terminator. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alexander Graf <agraf@suse.de> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1385140638-10444-3-git-send-email-peter.maydell@linaro.org
2013-07-19device_tree: Add qemu_devtree_setprop_sized_cells() utility functionsPeter Maydell
We already have a qemu_devtree_setprop_cells() which sets a dtb property to an array of cells whose values are specified by varargs. However for the fairly common case of setting a property to a list of addresses or of address,size pairs the number of cells used by each element in the list depends on the parent's #address-cells and #size-cells properties. To make this easier we provide an analogous qemu_devtree_setprop_sized_cells() macro which allows the number of cells used by each element to be specified. This is implemented using an underlying qemu_devtree_setprop_sized_cells_from_array() function which takes the values and sizes as an array; this may also be directly useful for cases where the cell contents are constructed programmatically. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1373977512-28932-2-git-send-email-peter.maydell@linaro.org
2013-07-09vl: Tighten parsing of -machine option phandle_startMarkus Armbruster
Make it QEMU_OPT_NUMBER, so it gets parsed by generic code, which actually bothers to check for errors, rather than its user, which doesn't. Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Markus Armbruster <armbru@redhat.com> Acked-by: Alexander Graf <agraf@suse.de> Message-id: 1372943363-24081-8-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09Simplify -machine option queries with qemu_get_machine_opts()Markus Armbruster
The previous two commits fixed bugs in -machine option queries. I can't find fault with the remaining queries, but let's use qemu_get_machine_opts() everywhere, for consistency, simplicity and robustness. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-id: 1372943363-24081-7-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-06-11device tree: Fix cppcheck warningStefan Weil
Fix this cppcheck warning: Checking device_tree.c... device_tree.c:216: style: Checking if unsigned variable 'r' is less than zero. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-12-19softmmu: move include files to include/sysemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-05device tree: simplify dumpdtb codeAlexander Graf
As per Peter's suggestion, we can use glib to write out a buffer in whole to a file, simplifying the code dramatically. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-10-05fdt: move dumpdtb interpretation code to device_tree.cAlexander Graf
The dumpdtb code can be useful in more places than just for e500. Move it to a generic place. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-07-20device_tree: Add support for reading device tree propertiesPeter Maydell
Add support for reading device tree properties (both generic and 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>
2012-06-24dt: make setprop argument staticAlexander Graf
Whatever we pass in to qemu_devtree_setprop to put into the device tree will 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>
2012-06-24dt: Add global option to set phandle start offsetAlexander Graf
If anyone outside of QEMU wants to mess with a QEMU generated device tree, he needs to know which range phandles are valid in. So let's expose a machine option that an external program can use to set the start allocate id for phandles in QEMU. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-24Revert "dt: temporarily disable subtree creation failure check"Alexander Graf
This reverts commit "dt: temporarily disable subtree creation failure check" which was meant as a temporary solution to keep external and dynamic device tree construction intact. Now that we switched to fully dynamic dt construction, it's no longer necessary. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-24dt: add helper for 64bit cell addsAlexander Graf
Some times in the device tree, we find an array of 2 u32 cells that really are a single u64 value. This patch adds a helper to make the creation of these easy. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
2012-06-24dt: add helper for phandle allocationAlexander Graf
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 gives us a unique number space. This patch adds an allocator for these properties. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-24dt: add helper for empty dt creationAlexander Graf
We want to get rid of the concept of loading an external device tree and instead generate our own. However, to do this we need to also create a device tree template programatically. This patch adds a helper to create an empty device tree in memory. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
2012-06-24dt: add helper for phandle enumerationAlexander Graf
This patch adds a helper to search for a node's phandle by its path. This is especially useful when the phandle is part of an array, not just a single cell in which case qemu_devtree_setprop_phandle would be the easy choice. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
2012-06-24dt: temporarily disable subtree creation failure checkAlexander Graf
Usually we want to know when creating a subtree fails. However, while introducing this patch set we have to modify the device tree and some times have the code to create a subtree in both the binary tree and the dynamically created tree. So ignore failures about this for now and enable them once we got rid of the binary device tree. Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-24dt: add helper for phandle referencesAlexander Graf
Phandles are the fancy device tree name for "pointer to another node". To create a phandle property, we most likely want to reference to the node we're pointing to by its path. So create a helper that allows us to do so. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
2012-06-24dt: allow add_subnode to create root subnodesAlexander Graf
Our subnode creation helper can't handle creation of root subnodes, like "/memory". Fix this by allowing the parent node to be an empty string, indicating the root node. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
2011-10-26device_tree: Fix potential memory leakStefan Weil
cppcheck error report: device_tree.c:156: error: Memory leak: dupname Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-06device tree: give dt more sizeAlexander Graf
We currently load a device tree blob and then just take its size x2 to account for modifications we do inside. While this is nice and great, it fails when we have a small device tree as blob and lots of nodes added in machine init code. So for now, just make it 20k bigger than it was before. We maybe want to be more clever about this later. Signed-off-by: Alexander Graf <agraf@suse.de>
2011-10-06device tree: dont fail operationsAlexander Graf
When we screw up and issue an FDT command that doesn't work, we really need to know immediately and usually can't continue to create the machine. To make sure we don't need to add error checking in all device tree modification code users, we can just add the fail checks to the qemu abstract functions. Signed-off-by: Alexander Graf <agraf@suse.de>
2011-10-06device tree: add add_subnode commandAlexander Graf
We want to be able to create subnodes in our device tree, so export it through the qemu device tree abstraction framework. Signed-off-by: Alexander Graf <agraf@suse.de>
2011-10-06device tree: add nop_nodeAlexander Graf
We have a qemu internal abstraction layer on FDT. While I'm not fully convinced we need it at all, it's missing the nop_node functionality that we now need on e500. So let's add it and think about the general future of that API later. Signed-off-by: Alexander Graf <agraf@suse.de>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-04-15Remove unused sysemu.h include directivesBlue Swirl
Remove unused sysemu.h include directives to speed up build with the following patches. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-04-01Allow qemu_devtree_setprop() to take arbitrary valuesDavid Gibson
Currently qemu_devtree_setprop() expects the new property value to be given as a uint32_t *. While property values consisting of u32s are common, in general they can have any bytestring value. Therefore, this patch alters the function to take a void * instead, allowing callers to easily give anything as the property value. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2009-09-23Fix device tree compile broken by ca20cf32ab3d945155141ef737f5d08ebb373e1dBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-05-24Remove unused variablePaul Brook
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-04-10Wean device tree code off phys_ram_base.pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7068 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05toplevel: remove error handling from qemu_malloc() callers (Avi Kivity)aliguori
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6531 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-16Implement device tree support needed for Bamboo emulationaurel32
To implement the -kernel, -initrd, and -append options, 4xx board emulation must load the guest kernel as if firmware had loaded it. Where u-boot would be the firmware, we must load the flat device tree into memory and set key fields such as /chosen/bootargs. This patch introduces a dependency on libfdt for flat device tree support. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6064 c046a42c-6fe2-441c-8c8c-71466251a162