kernel/linux.git/arch/powerpc/include/asm/opal-api.h, branch v6.12.80

powerpc: Fix typos

2024-05-07T14:21:30+00:00

Fix typos, most reported by "codespell arch/powerpc". Only touches comments, no code changes. Signed-off-by: Bjorn Helgaas Signed-off-by: Michael Ellerman Link: https://msgid.link/20240103231605.1801364-8-helgaas@kernel.org

powerpc/xive: Activate StoreEOI on P10

2021-11-25T00:25:30+00:00

StoreEOI (the capability to EOI with a store) requires load-after-store ordering in some cases to be reliable. P10 introduced a new offset for load operations to enforce correct ordering and the XIVE driver has the required support since kernel 5.8, commit b1f9be9392f0 ("powerpc/xive: Enforce load-after-store ordering when StoreEOI is active") Since skiboot v7, StoreEOI support is advertised on P10 with a new flag on the PowerNV platform. See skiboot commit 4bd7d84afe46 ("xive/p10: Introduce a new OPAL_XIVE_IRQ_STORE_EOI2 flag"). When detected, activate the feature. Signed-off-by: Cédric Le Goater Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211105102636.1016378-4-clg@kaod.org

powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_EOI_FW

2020-12-10T22:53:10+00:00

This flag was used to support the P9 DD1 and we have stopped supporting this CPU when DD2 came out. See skiboot commit: https://github.com/open-power/skiboot/commit/0b0d15e3c170 Also, remove eoi handler which is now unused. Signed-off-by: Cédric Le Goater Reviewed-by: Greg Kurz Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201210171450.1933725-11-clg@kaod.org

powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_MASK_FW

2020-12-10T22:53:10+00:00

This flag was used to support the PHB4 LSIs on P9 DD1 and we have stopped supporting this CPU when DD2 came out. See skiboot commit: https://github.com/open-power/skiboot/commit/0b0d15e3c170 Signed-off-by: Cédric Le Goater Reviewed-by: Greg Kurz Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201210171450.1933725-10-clg@kaod.org

powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_SHIFT_BUG

2020-12-10T22:53:10+00:00

powerpc/powernv: Add explicit fast-reboot support

2020-03-04T11:44:27+00:00

Add a way to manually invoke a fast-reboot rather than setting the NVRAM flag. The idea is to allow userspace to invoke a fast-reboot using the optional string argument to the reboot() system call, or using the xmon zr command so we don't need to leave around a persistent changes on a system to use the feature. Signed-off-by: Oliver O'Halloran Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200217024833.30580-2-oohall@gmail.com

powerpc/powernv: Add OPAL API interface to access secure variable

2019-11-12T13:33:22+00:00

The X.509 certificates trusted by the platform and required to secure boot the OS kernel are wrapped in secure variables, which are controlled by OPAL. This patch adds firmware/kernel interface to read and write OPAL secure variables based on the unique key. This support can be enabled using CONFIG_OPAL_SECVAR. Signed-off-by: Claudio Carvalho Signed-off-by: Nayna Jain Signed-off-by: Eric Richter [mpe: Make secvar_ops __ro_after_init, only build opal-secvar.c if PPC_SECURE_BOOT=y] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1573441836-3632-2-git-send-email-nayna@linux.ibm.com

powerpc/opal: add MPIPL interface definitions

2019-09-13T14:04:43+00:00

MPIPL is Memory Preserving IPL supported from POWER9. This enables the kernel to reset the system with memory 'preserved'. Also, it supports copying memory from a source address to some destination address during MPIPL boot. Add MPIPL interface definitions here to leverage these f/w features in adding FADump support for PowerNV platform. Signed-off-by: Hari Bathini Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/156821340710.5656.10071829040515662624.stgit@hbathini.in.ibm.com

powerpc/powernv: Add new opal message type

2019-09-11T23:27:00+00:00

We have OPAL_MSG_PRD message type to pass prd related messages from OPAL to `opal-prd`. It can handle messages upto 64 bytes. We have a requirement to send bigger than 64 bytes of data from OPAL to `opal-prd`. Lets add new message type (OPAL_MSG_PRD2) to pass bigger data. Signed-off-by: Vasant Hegde [mpe: Make the error string clear that it's the PRD2 event that failed] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190826065701.8853-2-hegdevasant@linux.vnet.ibm.com

Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2019-07-13T23:08:36+00:00

Pull powerpc updates from Michael Ellerman: "Notable changes: - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream. - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e mem: ...) which could lead to register corruption and kernel crashes. - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc when using the Radix MMU. - A large but incremental rewrite of our exception handling code to use gas macros rather than multiple levels of nested CPP macros. And the usual small fixes, cleanups and improvements. Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung Bauermann, YueHaibing" * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits) powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. powerpc/eeh: Handle hugepages in ioremap space ocxl: Update for AFU descriptor template version 1.1 powerpc/boot: pass CONFIG options in a simpler and more robust way powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h powerpc/irq: Don't WARN continuously in arch_local_irq_restore() powerpc/module64: Use symbolic instructions names. powerpc/module32: Use symbolic instructions names. powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h powerpc/module64: Fix comment in R_PPC64_ENTRY handling powerpc/boot: Add lzo support for uImage powerpc/boot: Add lzma support for uImage powerpc/boot: don't force gzipped uImage powerpc/8xx: Add microcode patch to move SMC parameter RAM. powerpc/8xx: Use IO accessors in microcode programming. powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c powerpc/8xx: refactor programming of microcode CPM params. powerpc/8xx: refactor printing of microcode patch name. powerpc/8xx: Refactor microcode write powerpc/8xx: refactor writing of CPM microcode arrays ...