src-test2/sys/dev/ofw, branch release/11.3.0

Revert r330897:

2018-03-29T02:50:57Z

This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re)

MFC r330019: ofw_fdt: Simplify parts with new libfdt methods

2018-03-14T03:50:12Z

libfdt now provides methods to iterate through subnodes and properties in a convenient fashion. Replace our ofw_fdt_{peer,child} searches with calls to their corresponding libfdt methods. Rework ofw_fdt_nextprop to use the fdt_for_each_property_offset macro, making it even more obvious what it's doing. No functional change intended.

MFC r329579: Set internal error returns [of some OF functions] to 0

2018-03-14T03:49:15Z

Set internal error returns for OF_peer(), OF_child(), and OF_parent() to zero, matching the IEEE 1275 standard. Since these internal error paths have never, to my knowledge, been taken, behavior is unchanged.

MFC r327391: Avoid use of the fdt_get_property_*() API

2018-03-14T03:47:58Z

[It is] intrinsically incompatible with FDT versions < 16. This also simplifies the code a bit.

MFC r326310: Back out OF module installation in the event of failure.

2018-03-14T03:45:33Z

PS3 firmware gives some ancient FDT version (2) that fails the init check in OFW_FDT. It is still possible to make progress, but not while the OF layer is going crazy.

MFC r326204: Do not bind to CPUs with SMT

2018-03-14T03:43:49Z

Do not bind to CPUs with SMT, which use a different CPU numbering convention that does not play well with this driver.

MFC r322359: Enable OF_setprop API function to add property in FDT

2018-03-14T03:41:07Z

This patch modifies function ofw_fdt_setprop (called by OF_setprop), so that it can add property, when replacing is not possible. Adding property is needed to fixup FDT's that have missing properties.

MFC r322289: Enable uing ofw_bus_find_compatible in early platform code

2018-03-14T03:39:31Z

Before this patch function ofw_bus_find_compatible was using memory allocations in order to find compatible node and the property's length. This way there was always a suited buffer for property, however this approach had also disadvantages - ofw_bus_find_compatible couldn't be used when malloc is not available, e.g. during fdt fixup stage. In order to remove the usage limitation of ofw_bus_find_compatible(), this patch modifies the function to use ofw_bus_node_is_compatible() (instead of the one without _int suffix), which uses a fixed buffer on stack instead of dynamic allocations.

MFC r322287 (mw): Add support for "compatible" parameter in ofw_fdt_fixup

2018-03-14T03:37:37Z

Sometimes it's convenient to provide fixup to many boards that use the same SoC family (eg. Marvell Armada 38x). Instead of putting multiple entries in fdt_fixup_table, use one entry which refers to all boards with given SoC.

MFC r317191, r317195: Don't ignore "disabled" CPUs

2018-03-14T03:36:27Z

r317191 (cognet): ePAPR states that any non-boot CPU will come in "disabled" state. So we should not consider a "disabled" cpu as a CPU we have to ignore, and we should use them if they provide a "enable-method". While I'm there, support "ok" as well as "okay", while ePAPR only accepts "okay", linux accepts "ok" too so we can expect it to be used. r317195 (cognet): Update comment ot reflect realilty, we know also take care of CPUs that provide a enable-method.