Changes in Kconfig

b78e0bff - powerpc: Remove UDBG_RTAS_CONSOLE

Wed, 18 Dec 2024 10:55:07 +0000

powerpc: Remove UDBG_RTAS_CONSOLEThe IBM Cell blade support was the last user of UDBG_RTAS_CONSOLE.Although it's still possible to build it viaPPC_EARLY_DEBUG_UDBG_RTAS_CONSOLE, AFAIK it's not useful on anyother platfoms, because only Cell and JS20 era machines provided theRTAS get/put-term-char functions.If anyone is using it or needs it we can always resurrect it from git.Signed-off-by: Michael Ellerman Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241218105523.416573-19-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

6584845b - powerpc/io: Remove PPC_INDIRECT_MMIO

Wed, 18 Dec 2024 10:54:58 +0000

powerpc/io: Remove PPC_INDIRECT_MMIOThe Cell blade support was the last user of PPC_INDIRECT_MMIO, so it cannow be removed.PPC_INDIRECT_PIO is still used by Power8 powernv, so it needs to remain.Reviewed-by: Arnd Bergmann Signed-off-by: Michael Ellerman Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241218105523.416573-10-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

478e1709 - powerpc/io: Remove PPC_IO_WORKAROUNDS

Wed, 18 Dec 2024 10:54:57 +0000

powerpc/io: Remove PPC_IO_WORKAROUNDSThe Cell blade support was the last user of PPC_IO_WORKAROUNDS, so theycan now be removed.Signed-off-by: Michael Ellerman Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20241218105523.416573-9-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

62f8f307 - powerpc/64: Remove maple platform

Sun, 13 Oct 2024 10:29:57 +0000

powerpc/64: Remove maple platformThe maple platform was added in 2004 [1], to support the "Maple" 970FXevaluation board.It was later used for IBM JS20/JS21 machines, as well as the Biminimachine, aka "Yellow Dog Powerstation".Sadly all those machines have passed into memory, and there's been noevidence for years that anyone is still using any of them.Remove the platform and related code. It can always be reinstated ifthere's interest.Note that this has no impact on support for 970FX based Power Macs.[1]: https://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux-fullhistory.git/commit/?id=f0d068d65c5e555ffcfbc189de32598f6f00770cSigned-off-by: Michael Ellerman Link: https://patch.msgid.link/20241013102957.548291-1-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

47d13a26 - powerpc/40x: Remove 40x platforms.

Fri, 28 Jun 2024 12:11:55 +0000

powerpc/40x: Remove 40x platforms.40x platforms have been orphaned for many years.Remove them.Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/20240628121201.130802-1-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

eb5aa213 - powerpc/82xx: Remove CONFIG_8260 and CONFIG_8272

Thu, 17 Aug 2023 08:05:49 +0000

powerpc/82xx: Remove CONFIG_8260 and CONFIG_8272CONFIG_8272 is never used, remove it.CONFIG_8260 is redundant with CONFIG_PPC_82xx, remove it.Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/80930252a5167f3cdaa7eb694074d75521a0bdf9.1692259495.git.christophe.leroy@csgroup.eu List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

536d948a - powerpc/fsl_uli1575: fix kconfig warnings and build errors

Sat, 29 Apr 2023 04:35:19 +0000

powerpc/fsl_uli1575: fix kconfig warnings and build errorsNeither FSL_SOC_BOOKE nor PPC_86xx enables CONFIG_PCI bydefault, so it may be unset in some randconfigs.When that happens, FSL_ULI1575 may be set when it should not besince it is a PCI driver. When it is set, there are 3 kconfigwarnings and a slew of build errorsWARNING: unmet direct dependencies detected for PCI_QUIRKS Depends on [n]: PCI [=n] Selected by [y]: - FSL_PCI [=y]WARNING: unmet direct dependencies detected for GENERIC_ISA_DMA Depends on [n]: ISA_DMA_API [=n] Selected by [y]: - FSL_ULI1575 [=y] && (FSL_SOC_BOOKE [=n] || PPC_86xx [=y])WARNING: unmet direct dependencies detected for PPC_INDIRECT_PCI Depends on [n]: PCI [=n] Selected by [y]: - FSL_PCI [=y]and 30+ build errors.Fixes: 22fdf79171e8 ("powerpc/fsl_uli1575: Allow to disable FSL_ULI1575 support")Signed-off-by: Randy Dunlap Reviewed-by: Pali Rohár Signed-off-by: Michael Ellerman Link: https://msgid.link/20230429043519.19807-1-rdunlap@infradead.org List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

22fdf791 - powerpc/fsl_uli1575: Allow to disable FSL_ULI1575 support

Sun, 09 Apr 2023 00:08:10 +0000

powerpc/fsl_uli1575: Allow to disable FSL_ULI1575 supportULI1575 PCIe south bridge exists only on some Freescale boards. Allow todisable CONFIG_FSL_ULI1575 symbol when it is not explicitly selected andonly implied. This is achieved by marking symbol as visible by providingshort description. Also adds dependency for this symbol to prevent enablingit on platforms on which driver does not compile.Signed-off-by: Pali Rohár Signed-off-by: Michael Ellerman Link: https://msgid.link/20230409000812.18904-7-pali@kernel.org List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

a99cc668 - gpiolib: split of_mm_gpio_chip out of linux/of_gpio.h

Tue, 07 Feb 2023 14:29:47 +0000

gpiolib: split of_mm_gpio_chip out of linux/of_gpio.hThis is a rarely used feature that has nothing to do with theclient-side of_gpio.h.Split it out with a separate header file and Kconfig optionso it can be removed on its own timeline aside from removingthe of_gpio consumer interfaces.Reviewed-by: Andy Shevchenko Signed-off-by: Arnd Bergmann Reviewed-by: Linus Walleij Signed-off-by: Andy Shevchenko List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

7ebc4903 - powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVE

Wed, 01 Dec 2021 14:41:37 +0000

powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVEPPC_NATIVE now only controls the native HPT code, so rename it to bemore descriptive. Restrict it to Book3S only.Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211201144153.2456614-3-npiggin@gmail.com List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

24d33ac5 - powerpc/64s: Make prom_init require RELOCATABLE

Wed, 23 Jun 2021 13:04:54 +0000

powerpc/64s: Make prom_init require RELOCATABLEWhen we boot from open firmware (OF) using PPC_OF_BOOT_TRAMPOLINE, aka.prom_init, we run parts of the kernel at an address other than the linkaddress. That happens because OF loads the kernel above zero (OF is atzero) and we run prom_init before copying the kernel down to zero.Currently that works even for non-relocatable kernels, because we dovarious fixups to the prom_init code to make it run where it's loaded.However those fixups are not sufficient if the kernel becomes largeenough. In that case prom_init()'s final call to __start() can end upgenerating a plt branch:bl c000000002000018 <00000078.plt_branch.__start>That results in the kernel jumping to the linked address of __start,0xc000000000000000, when really it needs to jump to the0xc000000000000000 + the runtime address because the kernel is stillrunning at the load address.We could do further shenanigans to handle that, see Jordan's patch forexample: https://lore.kernel.org/linuxppc-dev/20210421021721.1539289-1-jniethe5@gmail.comHowever it is much simpler to just require a kernel with prom_init() tobe built relocatable. The result works in all configurations withoutfurther work, and requires less code.This should have no effect on most people, as our defconfigs andessentially all distro configs already have RELOCATABLE enabled.Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210623130454.2542945-1-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

53d143fe - powerpc: Add Microwatt platform

Fri, 18 Jun 2021 03:43:41 +0000

powerpc: Add Microwatt platformMicrowatt is a FPGA-based implementation of the Power ISA. Itcurrently only implements little-endian 64-bit mode, and doesnot (yet) support SMP, VMX, VSX or transactional memory. It has anoptional FPU, and an optional MMU (required for running Linux,obviously) which implements a configurable radix tree but nothypervisor mode or nested radix translation.This adds a new machine type to support FPGA-based SoCs with aMicrowatt core. CONFIG_MATH_EMULATION can be selected for MicrowattSOCs which don't have the FPU.Signed-off-by: Paul Mackerras Reviewed-by: Nicholas Piggin Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/YMwWbZVREsVug9R0@thinks.paulus.ozlabs.org List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

413d6ed3 - powerpc/vas: Move VAS API to book3s common platform

Thu, 17 Jun 2021 20:29:48 +0000

powerpc/vas: Move VAS API to book3s common platformThe pseries platform will share vas and nx code and interfaceswith the PowerNV platform, so create thearch/powerpc/platforms/book3s/ directory and move VAS API codethere. Functionality is not changed.Signed-off-by: Haren Myneni Reviewed-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/e05c8db17b9eabe3545b902d034238e4c6c08180.camel@linux.ibm.com List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

e42a6400 - powerpc: Remove CONFIG_PPC601_SYNC_FIX

Tue, 29 Sep 2020 06:48:33 +0000

powerpc: Remove CONFIG_PPC601_SYNC_FIXThis config option isn't in any defconfig.The very first versions of Powerpc 601 have a bug whichrequires additional sync before and/or after some instructions.This was more than 25 years ago and time has come to retirethose buggy versions of the 601 from the kernel.Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/55b46bff16705b1ae7bf0a60ccd522b1010ebf75.1601362098.git.christophe.leroy@csgroup.eu List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

e63d6fb5 - powerpc/tau: Disable TAU between measurements

Fri, 04 Sep 2020 23:02:20 +0000

powerpc/tau: Disable TAU between measurementsEnabling CONFIG_TAU_INT causes random crashes:Unrecoverable exception 1700 at c0009414 (msr=1000)Oops: Unrecoverable exception, sig: 6 [#1]BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 PowerMacModules linked in:CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-pmac-00043-gd5f545e1a8593 #5NIP: c0009414 LR: c0009414 CTR: c00116fcREGS: c0799eb8 TRAP: 1700 Not tainted (5.7.0-pmac-00043-gd5f545e1a8593)MSR: 00001000 CR: 22000228 XER: 00000100GPR00: 00000000 c0799f70 c076e300 00800000 0291c0ac 00e00000 c076e300 00049032GPR08: 00000001 c00116fc 00000000 dfbd3200 ffffffff 007f80a8 00000000 00000000GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 c075ce04GPR24: c075ce04 dfff8880 c07b0000 c075ce04 00080000 00000001 c079ef98 c079ef5cNIP [c0009414] arch_cpu_idle+0x24/0x6cLR [c0009414] arch_cpu_idle+0x24/0x6cCall Trace:[c0799f70] [00000001] 0x1 (unreliable)[c0799f80] [c0060990] do_idle+0xd8/0x17c[c0799fa0] [c0060ba4] cpu_startup_entry+0x20/0x28[c0799fb0] [c072d220] start_kernel+0x434/0x44c[c0799ff0] [00003860] 0x3860Instruction dump:XXXXXXXX XXXXXXXX XXXXXXXX 3d20c07b XXXXXXXX XXXXXXXX XXXXXXXX 7c0802a6XXXXXXXX XXXXXXXX XXXXXXXX 4e800421 XXXXXXXX XXXXXXXX XXXXXXXX 7d2000a6---[ end trace 3a0c9b5cb216db6b ]---Resolve this problem by disabling each THRMn comparator when handlingthe associated THRMn interrupt and by disabling the TAU entirely whenupdating THRMn thresholds.Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")Signed-off-by: Finn Thain Tested-by: Stan Johnson Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/5a0ba3dc5612c7aac596727331284a3676c08472.1599260540.git.fthain@telegraphics.com.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

5e3119e1 - powerpc/tau: Check processor type before enabling TAU interrupt

Fri, 04 Sep 2020 23:02:20 +0000

powerpc/tau: Check processor type before enabling TAU interruptAccording to Freescale's documentation, MPC74XX processors have anerratum that prevents the TAU interrupt from working, so don't try touse it when running on those processors.Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")Signed-off-by: Finn Thain Tested-by: Stan Johnson Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/c281611544768e758bd58fe812cf702a5bd2d042.1599260540.git.fthain@telegraphics.com.au List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

a7f7f624 - treewide: replace '---help---' in Kconfig files with 'help'

Sat, 13 Jun 2020 16:50:22 +0000

treewide: replace '---help---' in Kconfig files with 'help'Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over'---help---'"), the number of '---help---' has been graduallydecreasing, but there are still more than 2400 instances.This commit finishes the conversion. While I touched the lines,I also fixed the indentation.There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---'In order to convert all of them to 1 tab + 'help', I ran thefollowing commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

7ade8495 - powerpc: Remove Xilinx PPC405/PPC440 support

Thu, 21 May 2020 16:55:52 +0000

powerpc: Remove Xilinx PPC405/PPC440 supportThe latest Xilinx design tools called ISE and EDK has been released inOctober 2013. New tool doesn't support any PPC405/PPC440 new designs.These platforms are no longer supported and tested.PowerPC 405/440 port is orphan from 2013 bycommit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") andcommit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership")that's why it is time to remove the support fot these platforms.Signed-off-by: Michal Simek Signed-off-by: Christophe Leroy Acked-by: Arnd Bergmann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

ed0bc98f - powerpc/64s: Reimplement power4_idle code in C

Thu, 11 Jul 2019 02:24:03 +0000

powerpc/64s: Reimplement power4_idle code in CThis implements the tricky tracing and soft irq handling bits in C,leaving the low level bit to asm.A functional difference is that this redirects the interrupt exit toa return stub to execute blr, rather than the lr address itself. Thisis probably barely measurable on real hardware, but it keeps the linkstack balanced.Tested with QEMU.Signed-off-by: Nicholas Piggin [mpe: Move power4_fixup_nap back into exceptions-64s.S]Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190711022404.18132-1-npiggin@gmail.com List of files: /linux-6.15/arch/powerpc/platforms/Kconfig

8795a739 - powerpc/sysdev: drop simple gpio

Thu, 31 Oct 2019 13:47:30 +0000

powerpc/sysdev: drop simple gpioThere is a config item CONFIG_SIMPLE_GPIO whichprovides simple memory mapped GPIOs specific to powerpc.However, the only platform which selects this option ismpc5200, and this platform doesn't use it.There are three boards calling simple_gpiochip_init(), butas they don't select CONFIG_SIMPLE_GPIO, this is just a nop.Simple_gpio is just redundant with the generic MMIO GPIOdriver which can be found in driver/gpio/ and selected viaCONFIG_GPIO_GENERIC_PLATFORM, so drop simple_gpio driver.Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/bf930402613b41b42d0441b784e0cc43fc18d1fb.1572529632.git.christophe.leroy@c-s.fr List of files: /linux-6.15/arch/powerpc/platforms/Kconfig