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diff --git a/doc/release-notes/skiboot-5.4.0-rc2.rst b/doc/release-notes/skiboot-5.4.0-rc2.rst new file mode 100644 index 0000000..f84c5b0 --- /dev/null +++ b/doc/release-notes/skiboot-5.4.0-rc2.rst @@ -0,0 +1,270 @@ +================= +skiboot-5.4.0-rc2 +================= + +skiboot-5.4.0-rc2 was released on Wednesday October 26th 2016. It is the +second release candidate of skiboot 5.4, which will become the new stable +release of skiboot following the 5.3 release, first released August 2nd 2016. + +skiboot-5.4.0-rc2 contains all bug fixes as of :ref:`skiboot-5.3.7` +and :ref:`skiboot-5.1.18` (the currently maintained stable releases). + +For how the skiboot stable releases work, see :ref:`stable-rules` for details. + +Since this is a release candidate, it should *NOT* be put into production. + +The current plan is to release a new release candidate every week until we +feel good about it. The aim is for skiboot-5.4.x to be in op-build v1.13, which +is due by November 23rd 2016. + +Over :ref:`skiboot-5.4.0-rc1`, we have a few changes: + +Secure and Trusted Boot +======================= + +skiboot 5.4.0-rc2 improves upon the progress towards Secure and Trusted Boot +in rc1. It is important to note that this is *not* a complete, end-to-end +secure/trusted boot implementation. + +With the current code, it is now possible to verify and measure resources +loaded from PNOR by skiboot (namely the CAPP and BOOTKERNEL partitions). + +Note that this functionality is currently *only* available on systems that +use the libflash backend. It is *NOT* enabled on IBM FSP based systems. +There is some support for some simulators though. + +- libstb/stb.c: ignore the secure mode flag unless forced in NVRAM + + For this stage in Trusted Boot development, we are wishing to not + force Secure Mode through the whole firmware boot process, but we + are wanting to be able to test it (classic chicken and egg problem with + build infrastructure). + + We disabled secure mode if the secure-enabled devtree property is + read from the device tree *IF* we aren't overriding it through NVRAM. + Seeing as we can only increase (not decrease) what we're checking through + the NVRAM variable, it is safe. + + The NVRAM setting is force-secure-mode=true in the ibm,skiboot partition. + + However, if you want to force secure mode even if Hostboot has *not* set + the secure-enabled proprety in the device tree, set force-secure-mode + to "always". + + There is also a force-trusted-mode NVRAM setting to force trusted mode + even if Hostboot has not enabled it int the device tree. + + To indicate to Linux that we haven't gone through the whole firmware + process in secure mode, we replace the 'secure-enabled' property with + 'partial-secure-enabled', to indicate that only part of the firmware + boot process has gone through secure mode. + + +Command line arguments to BOOTKERNEL +==================================== + +- core/init.c: Fix bootargs parsing + + Currently the bootargs are unconditionally deleted, which causes + a bug where the bootargs passed in by the device tree are lost. + + This patch deletes bootargs only if it needs to be replaced by the NVRAM + entry. + + This patch also removes KERNEL_COMMAND_LINE config option in favour of + using the NVRAM or a device tree. + +pflash utility +============== + +- external/pflash: Make MTD accesses the default + + Now that BMC and host kernel mtd drivers exist and have matured we + should use them by default. + + This is especially important since we seem to be telling everyone to use + pflash (pflash world domination plans are continuing on schedule). +- external/pflash: Catch incompatible combination of flags +- external/common: arm: Don't error trying to wrprotect with MTD access +- libflash/libffs: Use blocklevel_smart_write() when updating partitions + +Other changes +============= +- extract-gcov: build with -m64 if compiler supports it. + + Fixes build break on 32bit ppc64 (e.g. PowerMac G5, where user space + is mostly 32bit). + +Fast Reset +========== + +- fast-reset: disable fast reboot in event of platform error + + Most of the time, if we're rebooting due to a platform error, we should + trigger a checkstop. However, if we haven't been told what we should do + to trigger a checkstop (e.g. on an FSP machine), then we should still + fail to fast-reboot. + + So, disable fast-reboot in the OPAL_CEC_REBOOT2 code path + for OPAL_REBOOT_PLATFORM_ERROR reboot type. +- fast-reboot: disable on FSP code update or unrecoverable HMI +- fast-reboot: abort fast reboot if CAPP attached + + If a PHB is in CAPI mode, we cannot safely fast reboot - the PHB will be + fenced during the reboot resulting in major problems when we load the new + kernel. + + In order to handle this safely, we need to disable CAPI mode before + resetting PHBs during the fast reboot. However, we don't currently support + this. + + In the meantime, when fast rebooting, check if there are any PHBs with a + CAPP attached, and if so, abort the fast reboot and revert to a normal + reboot instead. + +OpenPOWER Platforms +=================== + +For all hardware platforms that aren't IBM FSP machines: + +- Revert "flash: Move flash node under ibm,opal/flash/" + + This reverts commit e1e6d009860d0ef60f9daf7a0fbe15f869516bd0. + + Breaks DT enough that it makes people cranky, reverting for now. + This could break access to flash with existing kernels in POWER9 simulators + +- flash: rework flash_load_resource to correctly read FFS/STB + + This fixes the previous reverts of loading the CAPP partition with + STB headers (which broke CAPP partitions without STB headers). + + The new logic fixes both CAPP partition loading with STB headers *and* + addresses a long standing bug due to differing interpretations of FFS. + + The f_part utility that *constructs* PNOR files just sets actualSize=totalSize + no matter on what the size of the partition is. Prior to this patch, + skiboot would always load actualSize, leading to longer than needed IPL. + + The pflash utility updates actualSize, so no developer has really ever + noticed this, apart from maybe an inkling that it's odd that a freshly + baked PNOR from op-build takes ever so slightly longer to boot than one + that has had individual partitions pflashed in. + + With this patch, we now compute actualSize. For partitions with a STB + header, we take the payload size from the STB header. For partitions + that don't have a STB header, we compute the size either by parsing + the ELF header or by looking at the subpartition header and computing it. + + We now need to read the entire partition for partitions with subpartitions + so that we pass consistent values to be measured as part of Trusted Boot. + + As of this patch, the actualSize field in FFS is *not* relied on for + partition size, we determine it from the content of the partition. + + However, this patch *will* break loading of partitions that are not ELF + and do not contain subpartitions. Luckily, nothing in-tree makes use of + that. + +PCI +=== +- pci: Check power state before powering off slot + + Prevents the erroneous "Error -1 powering off slot" error message. + +Contributors +============ +Since :ref:`skiboot-5.4.0-rc1`, we have 23 csets from 8 developers. + +A total of 876 lines added, 621 removed (delta 255) + +Developers with the most changesets + +============================ = ======= +Developer # % +============================ = ======= +Stewart Smith 7 (30.4%) +Cyril Bur 5 (21.7%) +Mukesh Ojha 3 (13.0%) +Gavin Shan 3 (13.0%) +Claudio Carvalho 2 (8.7%) +Chris Smart 1 (4.3%) +Andrew Donnellan 1 (4.3%) +Nageswara R Sastry 1 (4.3%) +============================ = ======= + +Developers with the most changed lines + +========================== === ======= +Developer # % +========================== === ======= +Stewart Smith 424 (45.7%) +Mukesh Ojha 204 (22.0%) +Gavin Shan 173 (18.6%) +Cyril Bur 69 (7.4%) +Claudio Carvalho 35 (3.8%) +Andrew Donnellan 13 (1.4%) +Chris Smart 8 (0.9%) +Nageswara R Sastry 2 (0.2%) +========================== === ======= + +Developers with the most lines removed + +============================ = ======= +Developer # % +============================ = ======= +Gavin Shan 9 (1.4%) +Chris Smart 4 (0.6%) +============================ = ======= + +Developers with the most signoffs (total 16) + +============================ = ======= +Developer # % +============================ = ======= +Stewart Smith 16 (100.0%) +============================ = ======= + +Developers with the most reviews (total 4) + +============================ = ======= +Developer # % +============================ = ======= +Vasant Hegde 2 (50.0%) +Andrew Donnellan 2 (50.0%) +============================ = ======= + +Developers with the most test credits (total 1) + +============================ = ======= +Developer # % +============================ = ======= +Pridhiviraj Paidipeddi 1 (100.0%) +============================ = ======= + +Developers who gave the most tested-by credits (total 1) + +============================ = ======= +Developer # % +============================ = ======= +Gavin Shan 1 (100.0%) +============================ = ======= + +Developers with the most report credits (total 3) + +============================ = ======= +Developer # % +============================ = ======= +Pridhiviraj Paidipeddi 1 (33.3%) +Andrei Warkenti 1 (33.3%) +Michael Neuling 1 (33.3%) +============================ = ======= + +Developers who gave the most report credits (total 3) + +============================ = ======= +Developer # % +============================ = ======= +Stewart Smith 2 (66.7%) +Gavin Shan 1 (33.3%) +============================ = ======= |