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skiboot-5.2.0
-------------
skiboot-5.2.0 was released on Wednesday March 16th, 2016.
skiboot-5.2.0 is the first stable release of skiboot 5.2, the new stable
release of skiboot, which will take over from the 5.1.x series which was
first released August 17th, 2015.
skiboot-5.2.0 contains all bug fixes as of skiboot-5.1.15.
This is the second release that will follow the (now documented) Skiboot
stable rules - see doc/stable-skiboot-rules.txt.
Over skiboot-5.2.0-rc2, the following fixes are included:
- Include 'extract-gcov' in make clean.
- ipmi-sel: Fix esel event logger to handle early boot PANIC events
- IPMI: Enable synchronous eSEL logging option (for PANIC events)
- libflash/libffs: Reporting seeing all 0xFF bytes during init.
- ipmi-sel: Fix memory leak in error path
Over skiboot-5.2.0-rc1, we have the following changes:
- Add Barreleye platform
Generic:
- hw/p8-i2c: Speed up SMBUS_WRITE
- Fix early backtraces
FSP Platforms:
- fsp-sensor: rework device tree for sensors
- platforms/firenze: Fix I2C clock source frequency
Simics simulator:
- Enable Simics UART console
Mambo simulator:
- platforms/mambo: Add terminate callback
- fix hang in multi-threaded mambo
- add multithreaded mambo tests
IPMI:
- hw/ipmi: fix event data 1 for System Firmware Progress sensor
- ipmi: Log exact NetFn value in OPAL logs
AST BMC based platforms:
- hw/bt: allow BT driver to use different buffer size
opal-prd utility:
- opal-prd: Add debug output for firmware-driven OCC events
We indicate when we have a user-driven event, so add corresponding
outputs for firmware-driven ones too.
getscom utility:
- Add Naples chip support
Over skiboot-5.1, the following features have been added:
- Naples (P8', i.e. P8 with NVLINK) processor support, including NVLINK.
- Improvements in gard, libflash/pflash and opal-prd utilities
- increased testing
- increased usability
- systemd scripts for opal-prd
- pflash can now use the /dev/mtd device to access BMC flash rather than
accessing it directly. It is *important* that you use --mtd if your
BMC may otherwise know how to interact with its own flash.
- support for Micron N25Q256Ax and N25Qx256Ax NOR flash.
- support for Winbond W25Q256BV NOR flash
- support for an emulated ("fake") RTC clock, useful in simulators
and during bringup
- Explicit 1:1 mapping in ranges properties have been added to PCI
bridges. This allows a neat trick with offb and VGA ports that should
probably not be told to young children.
- Added support to read the V2 format of the OCC-OPAL memory region,
which supports Workload Optimized Frequency (WOF)
Changes in behavior:
- Assigning OPAL IDs to PHBs is now fixed and based on the chip id and PHB
index on that chip. On POWER7, we continue to use allocated numbers.
- We now query the BMC for BT capabilities rather than making assumptions
Removed support:
- p5ioc2 is no longer supported.
This affects a grand total of two POWER7 systems in the world.
NOTE: It is planned that skiboot-5.2 will be the last release supporting
POWER7 machines.
Bugs fixed:
- PHB3: Fix unexpected ER (all) on errinjct by PCI config
- hw/bt: timeout messages when BT interface isn't functional
- On Habanero, Slot3 should have been "Slot 3".
- We now completely flush the console buffer before power down and reboot
- For chips with ibm,occ-functional-state set to false, we don't wait
for the OCC to start. This caused needless delay in booting on simulators
which did not simulate OCCs.
- Change OCC reset order to always reset slave OCCs first.
- slw: Remove overwrites for EX_PM_CORE_ECO_VRET and EX_PM_CORE_PFET_VRET
(these were already initialized in hostboot)
- p8-i2c: send stop bit on timeouts.
Some devices can otherwise leave the bus in a held state.
Other improvements include:
- many fixes of compiler and static analysis warnings
- increased unit test coverage
- Unit test of "boot debian jessie installer"
- ability to plug in other simulators to run existing tests (e.g. simulator for
non pegasus p8)
- Support using (patched) Qemu with PowerNV platform support for running
unit tests.
- increased support for running with sparse
- We now build with -fstack-protector-strong if supported by the compiler
- We now build with -Werror for -Wformat
- pflash is now built as part of travis-ci and for Coverity Scan.
- There is now a RPM SPEC file that can be used as the basis for packaging
skiboot and associated utilities.
Contributors
------------
We have had a number of improvements in workflow over skiboot-5.1.0. Looking
back, we have roughly the same number of changesets (372 for 5.1.0, 334 for
5.2.0-rc1 - even closer for 5.1.0-beta1) which indicates a relatively stable
rate of development.
Complete statistics are included below (generated by gitdm), but I'd like to
draw attention to a couple of stats:
Release csets Ack Reviews Tested Reported
5.0 329 15 20 1 0
5.1 372 13 38 1 4
5.2-rc1 334 20 34 6 11
Overall, it looks like we're on the right trajectory for increasing the number
of eyeballs looking at code before it heads in tree, especially around testing.
Largely, this increase in Tested-by can be attributed to encouraging the
existing test teams to start commenting on the patches themselves.
Anyway, here's the full stats from skiboot 5.1.0 to 5.2.0-rc1:
Processed 334 csets from 27 developers
2 employers found
A total of 46172 lines added, 23274 removed (delta 22898)
Developers with the most changesets
Stewart Smith 146 (43.7%)
Cyril Bur 52 (15.6%)
Benjamin Herrenschmidt 15 (4.5%)
Joel Stanley 12 (3.6%)
Gavin Shan 12 (3.6%)
Alistair Popple 10 (3.0%)
Vasant Hegde 10 (3.0%)
Michael Neuling 10 (3.0%)
Russell Currey 9 (2.7%)
Cédric Le Goater 8 (2.4%)
Jeremy Kerr 8 (2.4%)
Samuel Mendoza-Jonas 6 (1.8%)
Neelesh Gupta 6 (1.8%)
Shilpasri G Bhat 4 (1.2%)
Oliver O'Halloran 4 (1.2%)
Mahesh Salgaonkar 4 (1.2%)
Vipin K Parashar 3 (0.9%)
Daniel Axtens 3 (0.9%)
Andrew Donnellan 2 (0.6%)
Philippe Bergheaud 2 (0.6%)
Ananth N Mavinakayanahalli 2 (0.6%)
Vaibhav Jain 1 (0.3%)
Sam Mendoza-Jonas 1 (0.3%)
Adriana Kobylak 1 (0.3%)
Shreyas B. Prabhu 1 (0.3%)
Vaidyanathan Srinivasan 1 (0.3%)
Ian Munsie 1 (0.3%)
Developers with the most changed lines
Stewart Smith 19533 (39.4%)
Oliver O'Halloran 17920 (36.1%)
Alistair Popple 3285 (6.6%)
Daniel Axtens 2154 (4.3%)
Cyril Bur 2028 (4.1%)
Benjamin Herrenschmidt 941 (1.9%)
Neelesh Gupta 434 (0.9%)
Gavin Shan 294 (0.6%)
Russell Currey 261 (0.5%)
Vasant Hegde 245 (0.5%)
Cédric Le Goater 209 (0.4%)
Vipin K Parashar 155 (0.3%)
Shilpasri G Bhat 153 (0.3%)
Joel Stanley 140 (0.3%)
Vaidyanathan Srinivasan 135 (0.3%)
Michael Neuling 111 (0.2%)
Samuel Mendoza-Jonas 81 (0.2%)
Jeremy Kerr 60 (0.1%)
Mahesh Salgaonkar 58 (0.1%)
Vaibhav Jain 50 (0.1%)
Ananth N Mavinakayanahalli 43 (0.1%)
Shreyas B. Prabhu 17 (0.0%)
Sam Mendoza-Jonas 12 (0.0%)
Andrew Donnellan 10 (0.0%)
Ian Munsie 8 (0.0%)
Philippe Bergheaud 6 (0.0%)
Adriana Kobylak 6 (0.0%)
Developers with the most lines removed
Daniel Axtens 2149 (9.2%)
Shreyas B. Prabhu 17 (0.1%)
Andrew Donnellan 9 (0.0%)
Vipin K Parashar 2 (0.0%)
Developers with the most signoffs (total 190)
Stewart Smith 188 (98.9%)
Gavin Shan 1 (0.5%)
Neelesh Gupta 1 (0.5%)
Developers with the most reviews (total 34)
Patrick Williams 5 (14.7%)
Joel Stanley 5 (14.7%)
Cédric Le Goater 5 (14.7%)
Vasant Hegde 4 (11.8%)
Alistair Popple 4 (11.8%)
Sam Mendoza-Jonas 3 (8.8%)
Samuel Mendoza-Jonas 3 (8.8%)
Andrew Donnellan 2 (5.9%)
Cyril Bur 2 (5.9%)
Vaibhav Jain 1 (2.9%)
Developers with the most test credits (total 6)
Vipin K Parashar 3 (50.0%)
Vaibhav Jain 2 (33.3%)
Gajendra B Bandhu1 1 (16.7%)
Developers who gave the most tested-by credits (total 6)
Gavin Shan 2 (33.3%)
Ananth N Mavinakayanahalli 2 (33.3%)
Alistair Popple 1 (16.7%)
Stewart Smith 1 (16.7%)
Developers with the most report credits (total 11)
Vaibhav Jain 2 (18.2%)
Paul Nguyen 2 (18.2%)
Alistair Popple 1 (9.1%)
Cédric Le Goater 1 (9.1%)
Aneesh Kumar K.V 1 (9.1%)
Dionysius d. Bell 1 (9.1%)
Pradeep Ramanna 1 (9.1%)
John Walthour 1 (9.1%)
Benjamin Herrenschmidt 1 (9.1%)
Developers who gave the most report credits (total 11)
Gavin Shan 6 (54.5%)
Stewart Smith 3 (27.3%)
Samuel Mendoza-Jonas 1 (9.1%)
Shilpasri G Bhat 1 (9.1%)
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