Commit Graph

1 Commits

Author SHA1 Message Date
Marius Strobl
4f607e8ef2 - Assert that HEAPSZ is a multiple of PAGE_SIZE as at least the firmware
of Sun Fire V1280 doesn't round up the size itself but instead lets
  claiming of non page-sized amounts of memory fail.
- Change parameters and variables related to the TLB slots to unsigned
  which is more appropriate.
- Search the whole OFW device tree instead of only the children of the
  root nexus device for the BSP as starting with UltraSPARC IV the 'cpu'
  nodes hang off of from 'cmp' (chip multi-threading processor) or 'core'
  or combinations thereof. Also in large UltraSPARC III based machines
  the 'cpu' nodes hang off of 'ssm' (scalable shared memory) nodes which
  group snooping-coherency domains together instead of directly from the
  nexus.
- Add support for UltraSPARC IV and IV+ BSPs. Due to the fact that these
  are multi-core each CPU has two Fireplane config registers and thus the
  module/target ID has to be determined differently so the one specific
  to a certain core is used. Similarly, starting with UltraSPARC IV the
  individual cores use a different property in the OFW device tree to
  indicate the CPU/core ID as it no longer is in coincidence with the
  shared slot/socket ID.
  While at it additionally distinguish between CPUs with Fireplane and
  JBus interconnects as these also use slightly different sizes for the
  JBus/agent/module/target IDs.
- Check the return value of init_heap(). This requires moving it after
  cons_probe() so we can panic when appropriate. This should be fine as
  the PowerPC OFW loader uses that order for quite some time now.
2010-02-13 14:13:39 +00:00