805ce86149
The previous patch triggered a build failure for the debian kernel,
which has CONFIG_64BIT enabled, uses the CROSS_COMPILER environment
variable and uses ARCH=parisc to configure the kernel for 64-bit
support.
This patch weakens the previous patch while keeping the recommended way
to configure the kernel with:
ARCH=parisc -> build 32-bit kernel
ARCH=parisc64 -> build 64-bit kernel
while adding the possibility for debian to configure a 64-bit kernel
even if ARCH=parisc is set (PA8X00 CPU has to be selected and
CONFIG_64BIT needs to be enabled).
The downside of this patch is, that we now have a small window open
again where people may get it wrong: if they enable CONFIG_64BIT and try
to compile with a 32-bit compiler.
Fixes: 3dcfb729b5 ("parisc: Make CONFIG_64BIT available for ARCH=parisc64 only")
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # 5.15+
372 lines
9.8 KiB
Plaintext
372 lines
9.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config PARISC
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def_bool y
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select ALTERNATE_USER_ADDRESS_SPACE
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select ARCH_32BIT_OFF_T if !64BIT
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select ARCH_MIGHT_HAVE_PC_PARPORT
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_SYSCALL_TRACEPOINTS
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select ARCH_WANT_FRAME_POINTERS
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select ARCH_HAS_ELF_RANDOMIZE
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select ARCH_HAS_STRICT_KERNEL_RWX
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select ARCH_HAS_STRICT_MODULE_RWX
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select ARCH_HAS_UBSAN_SANITIZE_ALL
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select ARCH_HAS_PTE_SPECIAL
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select ARCH_NO_SG_CHAIN
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select ARCH_SUPPORTS_HUGETLBFS if PA20
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select ARCH_SUPPORTS_MEMORY_FAILURE
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select ARCH_STACKWALK
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select ARCH_HAS_DEBUG_VM_PGTABLE
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select HAVE_RELIABLE_STACKTRACE
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select DMA_OPS
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select RTC_CLASS
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select RTC_DRV_GENERIC
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select INIT_ALL_POSSIBLE
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select BUG
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select BUILDTIME_TABLE_SORT
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select HAVE_PCI
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select HAVE_PERF_EVENTS
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select HAVE_KERNEL_BZIP2
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_LZ4
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select HAVE_KERNEL_LZMA
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select HAVE_KERNEL_LZO
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select HAVE_KERNEL_XZ
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select GENERIC_ATOMIC64 if !64BIT
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select GENERIC_IRQ_PROBE
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select GENERIC_PCI_IOMAP
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_ARCH_TOPOLOGY if SMP
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select GENERIC_CPU_DEVICES if !SMP
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select GENERIC_LIB_DEVMEM_IS_ALLOWED
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select SYSCTL_ARCH_UNALIGN_ALLOW
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select SYSCTL_EXCEPTION_TRACE
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select HAVE_MOD_ARCH_SPECIFIC
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select MODULES_USE_ELF_RELA
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select CLONE_BACKWARDS
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select TTY # Needed for pdc_cons.c
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_HASH
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_JUMP_LABEL_RELATIVE
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select HAVE_ARCH_KFENCE
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_TRACEHOOK
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select HAVE_REGS_AND_STACK_ACCESS_API
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select GENERIC_SCHED_CLOCK
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select GENERIC_IRQ_MIGRATION if SMP
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select HAVE_UNSTABLE_SCHED_CLOCK if SMP
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select LEGACY_TIMER_TICK
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select CPU_NO_EFFICIENT_FFS
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select THREAD_INFO_IN_TASK
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select HAVE_ARCH_KGDB
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select HAVE_KPROBES
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select HAVE_KRETPROBES
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select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
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select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
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select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
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select HAVE_KPROBES_ON_FTRACE
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select HAVE_DYNAMIC_FTRACE_WITH_REGS
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select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
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select TRACE_IRQFLAGS_SUPPORT
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select HAVE_FUNCTION_DESCRIPTORS if 64BIT
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help
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The PA-RISC microprocessor is designed by Hewlett-Packard and used
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in many of their workstations & servers (HP9000 700 and 800 series,
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and later HP3000 series). The PA-RISC Linux project home page is
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at <https://parisc.wiki.kernel.org>.
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config CPU_BIG_ENDIAN
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def_bool y
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config MMU
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def_bool y
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config STACK_GROWSUP
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def_bool y
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SMP && PREEMPTION
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_BUG
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bool
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default y
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depends on BUG
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config TIME_LOW_RES
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bool
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depends on SMP
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default y
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# unless you want to implement ACPI on PA-RISC ... ;-)
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config PM
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bool
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config STACKTRACE_SUPPORT
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def_bool y
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config ISA_DMA_API
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bool
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config ARCH_MAY_HAVE_PC_FDC
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bool
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depends on BROKEN
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default y
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config PGTABLE_LEVELS
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int
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default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
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default 2
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menu "Processor type and features"
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choice
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prompt "Processor type"
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default PA7000 if "$(ARCH)" = "parisc"
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config PA7000
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bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
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help
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This is the processor type of your CPU. This information is
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used for optimizing purposes. In order to compile a kernel
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that can run on all 32-bit PA CPUs (albeit not optimally fast),
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you can specify "PA7000" here.
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Specifying "PA8000" here will allow you to select a 64-bit kernel
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which is required on some machines.
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config PA7100LC
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bool "PA7100LC" if "$(ARCH)" = "parisc"
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help
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Select this option for the PCX-L processor, as used in the
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712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
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D200, D210, D300, D310 and E-class
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config PA7200
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bool "PA7200" if "$(ARCH)" = "parisc"
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help
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Select this option for the PCX-T' processor, as used in the
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C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
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K100, K200, K210, K220, K400, K410 and K420
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config PA7300LC
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bool "PA7300LC" if "$(ARCH)" = "parisc"
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help
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Select this option for the PCX-L2 processor, as used in the
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744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
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D220, D230, D320 and D330.
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config PA8X00
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bool "PA8000 and up"
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help
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Select this option for PCX-U to PCX-W2 processors.
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endchoice
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# Define implied options from the CPU selection here
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config PA20
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def_bool y
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depends on PA8X00
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config PA11
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def_bool y
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depends on PA7000 || PA7100LC || PA7200 || PA7300LC
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select ARCH_HAS_SYNC_DMA_FOR_CPU
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select ARCH_HAS_SYNC_DMA_FOR_DEVICE
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config PREFETCH
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def_bool y
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depends on PA8X00 || PA7200
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config PARISC_HUGE_KERNEL
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def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
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config MLONGCALLS
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def_bool y if PARISC_HUGE_KERNEL
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bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
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depends on PA8X00
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help
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If you configure the kernel to include many drivers built-in instead
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as modules, the kernel executable may become too big, so that the
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linker will not be able to resolve some long branches and fails to link
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your vmlinux kernel. In that case enabling this option will help you
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to overcome this limit by using the -mlong-calls compiler option.
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Usually you want to say N here, unless you e.g. want to build
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a kernel which includes all necessary drivers built-in and which can
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be used for TFTP booting without the need to have an initrd ramdisk.
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Enabling this option will probably slow down your kernel.
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config 64BIT
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def_bool y if "$(ARCH)" = "parisc64"
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bool "64-bit kernel" if "$(ARCH)" = "parisc"
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depends on PA8X00
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help
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Enable this if you want to support 64bit kernel on PA-RISC platform.
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At the moment, only people willing to use more than 2GB of RAM,
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or having a 64bit-only capable PA-RISC machine should say Y here.
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Since there is no 64bit userland on PA-RISC, there is no point to
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enable this option otherwise. The 64bit kernel is significantly bigger
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and slower than the 32bit one.
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choice
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prompt "Kernel page size"
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default PARISC_PAGE_SIZE_4KB
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config PARISC_PAGE_SIZE_4KB
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bool "4KB"
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help
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This lets you select the page size of the kernel. For best
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performance, a page size of 16KB is recommended. For best
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compatibility with 32bit applications, a page size of 4KB should be
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selected (the vast majority of 32bit binaries work perfectly fine
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with a larger page size).
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4KB For best 32bit compatibility
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16KB For best performance
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64KB For best performance, might give more overhead.
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If you don't know what to do, choose 4KB.
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config PARISC_PAGE_SIZE_16KB
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bool "16KB"
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depends on PA8X00 && BROKEN && !KFENCE
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config PARISC_PAGE_SIZE_64KB
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bool "64KB"
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depends on PA8X00 && BROKEN && !KFENCE
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endchoice
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config SMP
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bool "Symmetric multi-processing support"
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on uni- and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine.
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On a uniprocessor machine, the kernel will run faster if you say N.
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See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
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available at <https://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on GENERIC_ARCH_TOPOLOGY && PA8X00
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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config IRQSTACKS
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bool "Use separate kernel stacks when processing interrupts"
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default y
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help
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If you say Y here the kernel will use separate kernel stacks
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for handling hard and soft interrupts. This can help avoid
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overflowing the process kernel stacks.
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config TLB_PTLOCK
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bool "Use page table locks in TLB fault handler"
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depends on SMP
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default n
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help
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Select this option to enable page table locking in the TLB
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fault handler. This ensures that page table entries are
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updated consistently on SMP machines at the expense of some
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loss in performance.
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config HOTPLUG_CPU
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bool
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default y if SMP
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y
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depends on 64BIT
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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depends on 64BIT
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config ARCH_FLATMEM_ENABLE
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def_bool y
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y
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depends on ARCH_SPARSEMEM_ENABLE
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source "kernel/Kconfig.hz"
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config COMPAT
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def_bool y
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depends on 64BIT
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config AUDIT_ARCH
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def_bool y
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config NR_CPUS
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int "Maximum number of CPUs (2-32)"
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range 2 32
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depends on SMP
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default "4" if 64BIT
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default "16"
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config KEXEC
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bool "Kexec system call"
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select KEXEC_CORE
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help
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kexec is a system call that implements the ability to shutdown your
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current kernel, and to start another kernel. It is like a reboot
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but it is independent of the system firmware. And like a reboot
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you can start any kernel with it, not just Linux.
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It is an ongoing process to be certain the hardware in a machine
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shutdown, so do not be surprised if this code does not
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initially work for you.
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config KEXEC_FILE
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bool "kexec file based system call"
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select KEXEC_CORE
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select KEXEC_ELF
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help
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This enables the kexec_file_load() System call. This is
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file based and takes file descriptors as system call argument
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for kernel and initramfs as opposed to list of segments as
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accepted by previous system call.
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endmenu
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source "drivers/parisc/Kconfig"
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