OpenSDV
/
original_kernel
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
original_kernel/drivers/remoteproc/Makefile

10 lines
268 B
Makefile
Raw Normal View History

remoteproc: add framework for controlling remote processors Modern SoCs typically employ a central symmetric multiprocessing (SMP) application processor running Linux, with several other asymmetric multiprocessing (AMP) heterogeneous processors running different instances of operating system, whether Linux or any other flavor of real-time OS. Booting a remote processor in an AMP configuration typically involves: - Loading a firmware which contains the OS image - Allocating and providing it required system resources (e.g. memory) - Programming an IOMMU (when relevant) - Powering on the device This patch introduces a generic framework that allows drivers to do that. In the future, this framework will also include runtime power management and error recovery. Based on (but now quite far from) work done by Fernando Guzman Lugo <fernando.lugo@ti.com>. ELF loader was written by Mark Grosen <mgrosen@ti.com>, based on msm's Peripheral Image Loader (PIL) by Stephen Boyd <sboyd@codeaurora.org>. Designed with Brian Swetland <swetland@google.com>. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Brian Swetland <swetland@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Stephen Boyd <sboyd@codeaurora.org>
2011-10-20 22:52:46 +08:00
#
# Generic framework for controlling remote processors
#
obj-$(CONFIG_REMOTEPROC) += remoteproc.o
remoteproc-y := remoteproc_core.o
remoteproc: add debugfs entries Expose several remote processor properties (name, state, trace buffer) that are helpful for debugging. This part is extracted to a separate patch just to keep the review load down. Designed with Brian Swetland <swetland@google.com>. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Brian Swetland <swetland@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Stephen Boyd <sboyd@codeaurora.org>
2011-10-20 23:24:15 +08:00
remoteproc-y += remoteproc_debugfs.o
remoteproc: create rpmsg virtio device Create an rpmsg virtio device to allow message-based communication with the remote processor (but only if supported by its firmware). There are several advantages to provide this functionality at the remoteproc-level: - to support it, platforms only have to provide their own ->kick() handler; no need to duplicate the rest of the code. - the virtio device is created only when the remote processor is registered and ready to go. No need to depend on initcall magic. moreover, we only add the virtio device if the firmware really supports it, and only after we know the supported virtio device features. - correct device model hierarchy can be set, and that is useful for natural power management and DMA API behavior. - when the remote processor crashes (or removed) we only need to remove the virtio device, and the driver core will take care of the rest. No need to implement any out-of-bound notifiers. - we can now easily bind the virtio device to its rproc handle, and this way we don't need any name-based remoteproc ->get() API. Currently we only support creating a single rpmsg virtio device per remote processor, but later this is going to be extended to support creating numerous virtio devices of other types too (block, net, console...). Designed with Brian Swetland <swetland@google.com>. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Cc: Brian Swetland <swetland@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Stephen Boyd <sboyd@codeaurora.org>
2011-10-21 00:15:13 +08:00
remoteproc-y += remoteproc_rpmsg.o
remoteproc/omap: add a remoteproc driver for OMAP4 Add a remoteproc driver for OMAP4, so we can boot the dual-M3 and and DSP subsystems. Use the omap_device_* API to control the hardware state, and utilize the OMAP mailbox to interrupt the remote processor when a new message is pending (the mailbox payload is used to tell it which virtqueue was the message placed in). Conversely, when an inbound mailbox message arrives, tell the remoteproc core which virtqueue is triggered. Later we will also use the mailbox payload to signal omap-specific events like remote crashes (which will be used to trigger remoteproc recovery) and power management transitions. At that point we will also extend the remoteproc core to support this. Based on (but now quite far from) work done by Fernando Guzman Lugo <fernando.lugo@ti.com> and Hari Kanigeri <h-kanigeri2@ti.com>. Designed with Brian Swetland <swetland@google.com>. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Brian Swetland <swetland@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Stephen Boyd <sboyd@codeaurora.org>
2011-10-21 00:53:35 +08:00
obj-$(CONFIG_OMAP_REMOTEPROC) += omap_remoteproc.o