Add skiboot-5.2.0 release notesskiboot-5.2.0

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 249 insertions, 0 deletions

diff --git a/doc/release-notes/skiboot-5.2.0.txt b/doc/release-notes/skiboot-5.2.0.txt
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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%)