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* OpenRISC: DMAJonas Bonn2011-07-22
| | | | | | | | Simple DMA implementation. Allows for allocation of coherent memory (simply uncached) for DMA operations. Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* OpenRISC: PTraceJonas Bonn2011-07-22
| | | | | | | | | | | | | This patch implements minimal PTrace support. The pt_regs structure is not exported to userspace for OpenRISC; rather, the GETREGSET mechanism is intended to be used and the registers, as such, exported in the core dump format which is ABI stable. This is in line with what is intended for new architectures as of 2.6.34 and has the advantage of permitting the layout of the registers on the kernel stack (as per pt_regs) to be freely modified. Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* OpenRISC: Build infrastructureJonas Bonn2011-07-22
| | | | | Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* OpenRISC: Signal handlingJonas Bonn2011-07-22
| | | | | Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* OpenRISC: Device treeJonas Bonn2011-07-22
| | | | | | | | | | | | | | | The OpenRISC architecture uses the device tree infrastructure for the platform description. This is currently limited to having a device tree built into the kernel, but work is underway within the OpenRISC project to define how this device tree blob should be passed into the kernel from an external resource. Patch contains a single example DTS file to go with the defconfig for or1ksim. Signed-off-by: Jonas Bonn <jonas@southpole.se> Cc: devicetree-discuss@lists.ozlabs.org Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* OpenRISC: Boot codeJonas Bonn2011-07-22
Architecture code and early setup routines for booting Linux. Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>