[Skiboot] skiboot-5.6-0-rc1 released!
Stewart Smith
stewart at linux.vnet.ibm.com
Wed May 17 14:04:22 AEST 2017
skiboot-5.6.0-rc1
*****************
skiboot-5.6.0-rc1 was released on Tuesday May 16th 2017. It is the
first release candidate of skiboot 5.6, which will become the new
stable release of skiboot following the 5.5 release, first released
April 7th 2017.
skiboot-5.6.0-rc1 contains all bug fixes as of skiboot-5.4.4 and
skiboot-5.1.19 (the currently maintained stable releases). We do not
currently expect to do any 5.5.x stable releases.
For how the skiboot stable releases work, see Skiboot stable tree
rules and releases for details.
The current plan is to cut the final 5.6.0 by May 22nd, with skiboot
5.6.0 being for all POWER8 and POWER9 platforms in op-build v1.17 (Due
May 24th). This is a short cycle as this release is mainly targetted
towards POWER9 bringup efforts.
This is the first release using the new regular six week release
cycle, similar to op-build, but slightly offset to allow for a short
stabilisation period. Expected release dates and contents are tracked
using GitHub milestone and issues: https://github.com/open-
power/skiboot/milestones
Over skiboot-5.5, we have the following changes:
New Platforms
=============
Thanks to SuperMicro for submitting support for the p9dsu platform,
AKA Boston.
POWER9
======
XIVE:
* xive: Clear emulation mode queue on reset
* xive: Fixes/improvements to xive reset for multi-chip systems
* xive: Synchronize after disable IRQs in opal_xive_reset()
* xive: Workaround a problem with indirect TM access
* hdata: Make FSPv1 work again One less thing to work around for
those crazy enough to try.
* xive: Log more information in opal_xive_dump() for emulation
state
Add a counter of total interrupts taken by a CPU, dump the queue
buffer both before and after the current pointer, and also
display the HW state of the queue descriptor and the PQ state of
the IPI.
* xive: Add a per-cpu logging mechanism to XICS emulation
This is a small 32-entries rolling buffer that logs a few
operations. It's useful to debug odd problems. The output is
printed when opal_xive_dump() is called.
* xive: Check queues for duplicates in DEBUG builds.
There should never be duplicate interrupts in a queue. This adds
code to check that when looking at the queue content. Since it
can be a performance loss, this is only done for debug builds.
* xive+phb4: Fix exposing trigger page to Linux
HDAT Parsing:
* hdata/spira.c: Add device-tree bindings for nest mmu
* hdata/i2c: Workaround broken i2c devices
* hdata: indicate when booted with elevated risk level
When the system is IPLed with an elevated risk level Hostboot
will set a flag in the IPL parameters structure. Parse and export
this in the device tree at: /ipl-params/sys-params/elevated-risk-
level
* hdata: Respect OCC and HOMER resevations
In the past we've ignored these since Hostboot insisted in
exporting broken reservations and the OCC was not being used yet.
This situation seems to have resolved itself so we should respect
the reservations that hostboot provides.
I2C:
* i2c: Add interrupts support on P9
Some older revisions of hostboot populate the host i2c device fields
with all zero entires. Detect and ignore these so we don't crash on
boot.
Without this we get:
[ 151.251240444,3] DT: dt_attach_root failed, duplicate unknown at 0
[ 151.251300274,3] ***********************************************
[ 151.251339330,3] Unexpected exception 200 !
[ 151.251363654,3] SRR0 : 0000000030090c28 SRR1 : 9000000000201000
[ 151.251409207,3] HSRR0: 0000000000000010 HSRR1: 9000000000001000
[ 151.251444114,3] LR : 30034018300c5ab0 CTR : 30034018300a343c
[ 151.251478314,3] CFAR : 0000000030024804
[ 151.251500346,3] CR : 40004208 XER: 00000000
<snip GPRS>
[ 151.252083372,0] Aborting!
CPU 0034 Backtrace:
S: 0000000031cd36a0 R: 000000003001364c .backtrace+0x2c
S: 0000000031cd3730 R: 0000000030018db8 ._abort+0x4c
S: 0000000031cd37b0 R: 0000000030025c6c .exception_entry+0x114
S: 0000000031cd3840 R: 0000000000001f00 * +0x1f00
S: 0000000031cd3a10 R: 0000000031cd3ab0 *
S: 0000000031cd3aa0 R: 00000000300248b8 .new_property+0x90
S: 0000000031cd3b30 R: 0000000030024b50 .__dt_add_property_cells+0x30
S: 0000000031cd3bd0 R: 000000003009abec .parse_i2c_devs+0x350
S: 0000000031cd3cf0 R: 0000000030093ffc .parse_hdat+0x11e4
S: 0000000031cd3e30 R: 00000000300144c8 .main_cpu_entry+0x138
S: 0000000031cd3f00 R: 0000000030002648 boot_entry+0x198
PHB4:
* phb4: Enforce root complex config space size of 2048
The root complex config space size on PHB4 is 2048. This patch
sets that size and enforces it when trying to read/write the
config space in the root complex.
Without this someone reading the config space via /sysfs in linux
will cause an EEH on the PHB.
If too high, reads returns 1s and writes are silently dropped.
* phb4: Add an option for disabling EEH MMIO in nvram
Having the option to disable EEH for MMIO without rebuilding
skiboot could be useful for testing, so check for pci-eeh-
mmio=disabled in nvram.
This is not designed to be a supported option or configuration,
just an option that's useful in bringup and development of POWER9
systems.
* phb4: Fix slot presence detect
This has the nice side effect of improving boot times since we no
longer waste time tring to train links that don't have anything
present.
* phb4: Enable EEH for MMIO
* phb4: Implement fence check
* phb4: Implement diag data
OCC:
* occ/irq: Fix SCOM address and irq reasons for P9 OCC
This patch fixes the SCOM address for OCC_MISC register which is
used for OCC interupts. In P9, OCC sends an interrupt to notify
change in the shared memory like throttle status. This patch
handles this interrupt reason.
PRD:
* prd: Fix PRD scoms for P9
NX/DARN:
* nx: Add POWER9 DARN support
NPU2:
* npu2: Do not attempt to initialise non DD1 hardware
There are significant changes to hardware register addresses and
meanings on newer chip revisions making them unlikely to work
correctly with the existing code. Better to fail clearly and
early.
* npu, npu2: Describe diag data size in device tree
Memory Reservation:
* mem_region: Add reserved regions after memory init
When a new memory region is added (e.g for memory reserved by
firmware) the list of existing memory regions is iterated through
and a cut-out is made in any existing region that overlaps with
the new one. Prior to the HDAT reservations being made the region
init process was always:
1. Create regions from the memory@<addr> DT nodes. (mostly
large)
2. Create reserved regions from the device-tree. (mostly
small)
When adding new regions we have assumed that the new region will
only every intersect with at most one existing region, which it
will split. Adding reservations inside the HDAT parser breaks
this because when adding the memory@<addr> node regions we can
potentially overlap with multiple reserved regions. This patch
fixes this by maintaining a seperate list of memory reservations
and delaying merging them until after the normal memory init has
finished, similar to how DT reservations are handled.
PCI
===
* pci: Describe PHB diag data size in device tree
Linux hardcodes the PHB diag data buffer at (as of this commit) 8192
bytes. This has been enough for P7IOC and PHB3, but the 512 PEs of
PHB4 pushes the diag data blob over this size. Rather than just
increasing the hardcoded size in Linux, provide the size of the diag
data blob in the device tree so that the OS can dynamically allocate
as much as it needs. This both enables more space for PHB4 and less
wasted memory for P7IOC and PHB3.
P7IOC communicates both hub and PHB data using this buffer, so when
setting the size, use whichever struct is largest.
* hdata/i2c: Fix bus and clock frequencies
* ibm-fsp: use opal-prd on p9 and above
Previously the PRD tooling ran on the FSP, but it was moved into
userspace on the host for OpenPower systems. For P9 this system was
adopted for FSP systems too.
I2C
===
* i2c: Remove old hack for bad clock frequency
This hack dates back to ancient P8 hostboots. The value it would use
if it detected the "bad" value was incorrect anyway.
* i2c: Log the engine clock frequency at boot
FSP Systems
===========
These include the Apollo, Firenze and ZZ platforms.
* Remove multiple logging for un-handled fsp sub commands.
If any new or unknown command need to be handled, just log un-
hnadled message from only fsp, not required from fsp-dpo.
cat /sys/firmware/opal/msglog | grep -i ,3
[ 110.232114723,3] FSP: fsp_trigger_reset() entry
[ 188.431793837,3] FSP #0: Link down, starting R&R
[ 464.109239162,3] FSP #0: Got XUP with no pending message !
[ 466.340598554,3] FSP-DPO: Unknown command 0xce0900
[ 466.340600126,3] FSP: Unhandled message ce0900
* FSP: Notify FSP of Platform Log ID after Host Initiated Reset
Reload
Trigging a Host Initiated Reset (when the host detects the FSP has
gone out to lunch and should be rebooted), would cause "Unknown
Command" messages to appear in the OPAL log.
This patch implements those messages
How to trigger FSP RR(HIR):
$ putmemproc 300000f8 0x00000000deadbeef
s1 k0:n0:s0:p00
ecmd_ppc putmemproc 300000f8 0x00000000deadbeef
Log showing unknown command:
/ # cat /sys/firmware/opal/msglog | grep -i ,3
[ 110.232114723,3] FSP: fsp_trigger_reset() entry
[ 188.431793837,3] FSP #0: Link down, starting R&R
[ 464.109239162,3] FSP #0: Got XUP with no pending message !
[ 466.340598554,3] FSP-DPO: Unknown command 0xce0900
[ 466.340600126,3] FSP: Unhandled message ce0900
The message we need to handle is "Get PLID after host initiated FipS
reset/reload". When the FSP comes back from HIR, it asks "hey, so,
which error log explains why you rebooted me?". So, we tell it.
Misc
====
* hdata_to_dt: Misc improvements in the utility and unit test
* GCC7: fixes for -Wimplicit-fallthrough expected regexes
It turns out GCC7 adds a useful warning and does fancy things like
parsing your comments to work out that you intended to do the
fallthrough. There's a few places where we don't match the regex.
Fix them, as it's harmless to do so.
Found by building on Fedora Rawhide in Travis.
While we do not have everything needed to start building
successfully with GCC7 (well, at least doing so warning clean), it's
a start.
* hdata/i2c: avoid possible int32_t overflow
We're safe up until engine number 524288. Found by static analysis
(of course)
* tpm_i2c_nuvoton: fix use-after-free in tpm_register_chip failure
path
* mambo: Fix reserved-ranges node
* external/mambo: add helper for machine checks
* console: Set log level from nvram
This adds two new nvram options to set the console log level for the
driver/uart and in memory. These are called log-level-memory and
log-level-driver.
These are only set once we have nvram inited.
To set them you do:
nvram -p ibm,skiboot --update-config log-level-memory=9
nvram -p ibm,skiboot --update-config log-level-driver=9
You can also use the named versions of emerg, alert, crit, err,
warning, notice, printf, info, debug, trace or insane. ie.
nvram -p ibm,skiboot --update-config log-level-driver=insane
* npu: Implement Function Level Reset (FLR)
* mbox: Sanitize interrupts registers
* xive: Fix potential for lost IPIs when manipulating CPPR
* xive: Don't double EOI interrupts that have an EOI override
* libflash/file: Only use 64bit MTD erase ioctl() when needed
We recently made MTD 64 bit safe in e5720d3fe94 which now requires
the 64 bit MTD erase ioctl. Unfortunately this ioctl is not present
in older kernels used by some BMC vendors that use pflash.
This patch addresses this by only using the 64bit version of the
erase ioctl() if the parameters exceed 32bit in size.
If an erase requires the 64bit ioctl() on a kernel which does not
support it, the code will still attempt it. There is no way of
knowing beforehand if the kernel supports it. The ioctl() will fail
and an error will be returned from from the function.
Contributors
============
This release contains 81 csets from 15 developers, working at 2
employers. A total of 2496 lines added, 641 removed (delta 1855)
Developers with the most changesets
-----------------------------------
+-----------------------------+----+---------+
| Developer | # | % |
+=============================+====+=========+
| Oliver O'Halloran | 17 | (21.0%) |
+-----------------------------+----+---------+
| Benjamin Herrenschmidt | 17 | (21.0%) |
+-----------------------------+----+---------+
| Michael Neuling | 16 | (19.8%) |
+-----------------------------+----+---------+
| Stewart Smith | 9 | (11.1%) |
+-----------------------------+----+---------+
| Russell Currey | 8 | (9.9%) |
+-----------------------------+----+---------+
| Alistair Popple | 5 | (6.2%) |
+-----------------------------+----+---------+
| ppaidipe at linux.vnet.ibm.com | 1 | (1.2%) |
+-----------------------------+----+---------+
| Dave Heller | 1 | (1.2%) |
+-----------------------------+----+---------+
| Jeff Scheel | 1 | (1.2%) |
+-----------------------------+----+---------+
| Nicholas Piggin | 1 | (1.2%) |
+-----------------------------+----+---------+
| Ananth N Mavinakayanahalli | 1 | (1.2%) |
+-----------------------------+----+---------+
| Cyril Bur | 1 | (1.2%) |
+-----------------------------+----+---------+
| Alexey Kardashevskiy | 1 | (1.2%) |
+-----------------------------+----+---------+
| Jim Yuan | 1 | (1.2%) |
+-----------------------------+----+---------+
| Shilpasri G Bhat | 1 | (1.2%) |
+-----------------------------+----+---------+
Developers with the most changed lines
--------------------------------------
+-----------------------------+-----+---------+
| Developer | # | % |
+=============================+=====+=========+
| Michael Neuling | 748 | (28.4%) |
+-----------------------------+-----+---------+
| Benjamin Herrenschmidt | 405 | (15.4%) |
+-----------------------------+-----+---------+
| Russell Currey | 360 | (13.7%) |
+-----------------------------+-----+---------+
| Oliver O'Halloran | 297 | (11.3%) |
+-----------------------------+-----+---------+
| Nicholas Piggin | 187 | (7.1%) |
+-----------------------------+-----+---------+
| Alistair Popple | 183 | (7.0%) |
+-----------------------------+-----+---------+
| Stewart Smith | 175 | (6.6%) |
+-----------------------------+-----+---------+
| Shilpasri G Bhat | 79 | (3.0%) |
+-----------------------------+-----+---------+
| Jim Yuan | 56 | (2.1%) |
+-----------------------------+-----+---------+
| Ananth N Mavinakayanahalli | 45 | (1.7%) |
+-----------------------------+-----+---------+
| Cyril Bur | 38 | (1.4%) |
+-----------------------------+-----+---------+
| Alexey Kardashevskiy | 37 | (1.4%) |
+-----------------------------+-----+---------+
| Jeff Scheel | 19 | (0.7%) |
+-----------------------------+-----+---------+
| Dave Heller | 2 | (0.1%) |
+-----------------------------+-----+---------+
| Pridhiviraj Paidipeddi | 1 | (0.0%) |
+-----------------------------+-----+---------+
Developers with the most lines removed
--------------------------------------
+-----------------------------+-----+---------+
| Developer | # | % |
+=============================+=====+=========+
| Pridhiviraj Paidipeddi | 1 | (0.2%) |
+-----------------------------+-----+---------+
Developers with the most signoffs
---------------------------------
Total of 73.
+---------------------------+-----+---------+
| Developer | # | % |
+===========================+=====+=========+
| Stewart Smith | 56 | (76.7%) |
+---------------------------+-----+---------+
| Michael Neuling | 16 | (21.9%) |
+---------------------------+-----+---------+
| Oliver O'Halloran | 1 | (1.4%) |
+---------------------------+-----+---------+
Developers with the most reviews
--------------------------------
Total of 6.
+---------------------------+-----+---------+
| Developer | # | % |
+===========================+=====+=========+
| Oliver O'Halloran | 3 | (50.0%) |
+---------------------------+-----+---------+
| Andrew Donnellan | 1 | (16.7%) |
+---------------------------+-----+---------+
| Gavin Shan | 1 | (16.7%) |
+---------------------------+-----+---------+
| Cyril Bur | 1 | (16.7%) |
+---------------------------+-----+---------+
Developers with the most test credits
-------------------------------------
Total of 5.
+---------------------------+-----+---------+
| Developer | # | % |
+===========================+=====+=========+
| Oliver O'Halloran | 2 | (40.0%) |
+---------------------------+-----+---------+
| Vaidyanathan Srinivasan | 1 | (20.0%) |
+---------------------------+-----+---------+
| Vasant Hegde | 1 | (20.0%) |
+---------------------------+-----+---------+
| Michael Ellerman | 1 | (20.0%) |
+---------------------------+-----+---------+
Developers who gave the most tested-by credits
----------------------------------------------
Total of 5.
+---------------------------+-----+---------+
| Developer | # | % |
+===========================+=====+=========+
| Oliver O'Halloran | 2 | (40.0%) |
+---------------------------+-----+---------+
| Benjamin Herrenschmidt | 2 | (40.0%) |
+---------------------------+-----+---------+
| Nicholas Piggin | 1 | (20.0%) |
+---------------------------+-----+---------+
Developers with the most report credits
---------------------------------------
Total of 2.
+-----------------------------+-----+---------+
| Developer | # | % |
+=============================+=====+=========+
| Benjamin Herrenschmidt | 1 | (50.0%) |
+-----------------------------+-----+---------+
| Pridhiviraj Paidipeddi | 1 | (50.0%) |
+-----------------------------+-----+---------+
Developers who gave the most report credits
-------------------------------------------
Total of 2.
+---------------------------+-----+----------+
| Developer | # | % |
+===========================+=====+==========+
| Stewart Smith | 2 | (100.0%) |
+---------------------------+-----+----------+
Top changeset contributors by employer
--------------------------------------
Total of 2.
+---------------------------+-----+---------+
| Employer | # | % |
+===========================+=====+=========+
| IBM | 80 | (98.8%) |
+---------------------------+-----+---------+
| SuperMicro | 1 | (1.2%) |
+---------------------------+-----+---------+
Top lines changed by employer
-----------------------------
+---------------------------+------+---------+
| Employer | # | % |
+===========================+======+=========+
| IBM | 2576 | (97.9%) |
+---------------------------+------+---------+
| SuperMicro | 56 | (2.1%) |
+---------------------------+------+---------+
Employers with the most signoffs
--------------------------------
Total 73.
+---------------------------+-----+----------+
| Employer | # | % |
+===========================+=====+==========+
| IBM | 73 | (100.0%) |
+---------------------------+-----+----------+
Employers with the most hackers
-------------------------------
Total 15.
+---------------------------+-----+---------+
| Employer | # | % |
+===========================+=====+=========+
| IBM | 14 | (93.3%) |
+---------------------------+-----+---------+
| SuperMicro | 1 | (6.7%) |
+---------------------------+-----+---------+
--
Stewart Smith
OPAL Architect, IBM.
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