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gerrit.openbmc.org / openbmc / hiomapd / c0ef98774c3e0f3e365c745f0b82ec0b8739ca47
commitc0ef98774c3e0f3e365c745f0b82ec0b8739ca47[log] [tgz]
authorRatan Gupta <ratagupt@in.ibm.com>Tue Jun 06 14:31:37 2017 +0530
committerRatan Gupta <ratagupt@in.ibm.com>Thu Jun 29 22:08:30 2017 +0530
tree126e7eff3d56d711ea12d52b70792b831dd53921
parentb0327581344ffba6cb53fca87d386cbf567986e9 [diff]
Read/write window property defines FFS partition file location.

The BMC loads the PNOR partitions in a read-only volume.

So after that there are following two cases:

Read: Tries to open the file in read only mode from
the partition(READONLY/READWRITE/PRESERVED), Partition
Table tells the partition type depends on the offset.
if file is not there in the mapped partition
then tries to open the file from the read only partition.

Write: Tries to open the file in write mode from the
partition(READWRITE/PRESERVED), if file is not there
in the mapped partition then mailbox daemon will copy
the requested partition to the read-write volume to
make changes to it.

Change-Id: Ic0ef882380b56536ac55feae3ec563de95fdd4a6
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
8 files changed
tree: 126e7eff3d56d711ea12d52b70792b831dd53921
  1. Documentation/
  2. m4/
  3. test/
  4. .gitignore
  5. bootstrap.sh
  6. common.c
  7. common.h
  8. configure.ac
  9. dbus.h
  10. LICENSE
  11. Makefile.am
  12. mbox.h
  13. mboxctl.c
  14. mboxd.c
  15. mboxd_dbus.c
  16. mboxd_dbus.h
  17. mboxd_flash.c
  18. mboxd_flash.h
  19. mboxd_flash_physical.c
  20. mboxd_flash_virtual.cpp
  21. mboxd_lpc.c
  22. mboxd_lpc.h
  23. mboxd_msg.c
  24. mboxd_msg.h
  25. mboxd_pnor_partition_table.cpp
  26. mboxd_pnor_partition_table.h
  27. mboxd_windows.c
  28. mboxd_windows.h
  29. mtd.c
  30. pnor_partition.cpp
  31. pnor_partition.hpp
  32. pnor_partition_defs.h
  33. pnor_partition_table.cpp
  34. pnor_partition_table.hpp
  35. README.md
README.md

Copyright 2017 IBM

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

MBOX

This repo contains the protocol definition for the host to BMC mailbox communication specification which can be found in Documentation/mbox_procotol.md.

There is also a reference implementation of a BMC mailbox daemon, the details of which can be found in Documentation/mboxd.md.

Finally there is also an implementation of a mailbox daemon control program, the details of which can be found in Documentation/mboxctl.md.