From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001 From: hc <hc@nodka.com> Date: Sat, 11 May 2024 08:53:19 +0000 Subject: [PATCH] change otg to host mode --- kernel/arch/powerpc/Kconfig | 496 +++++++++++++++++++++++++++++------------------------- 1 files changed, 265 insertions(+), 231 deletions(-) diff --git a/kernel/arch/powerpc/Kconfig b/kernel/arch/powerpc/Kconfig index f0e09d5..78dd6be 100644 --- a/kernel/arch/powerpc/Kconfig +++ b/kernel/arch/powerpc/Kconfig @@ -1,10 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 source "arch/powerpc/platforms/Kconfig.cputype" -config PPC32 - bool - default y if !PPC64 - config 32BIT bool default y if PPC32 @@ -48,7 +44,7 @@ # Allow randomisation to consume up to 512MB of address space (2^29). default 11 if PPC_256K_PAGES # 11 = 29 (512MB) - 18 (256K) default 13 if PPC_64K_PAGES # 13 = 29 (512MB) - 16 (64K) - default 15 if PPC_16K_PAGES # 15 = 29 (512MB) - 14 (16K) + default 15 if PPC_16K_PAGES # 15 = 29 (512MB) - 14 (16K) default 17 # 17 = 29 (512MB) - 12 (4K) config ARCH_MMAP_RND_COMPAT_BITS_MIN @@ -63,7 +59,10 @@ def_bool PPC64 config NEED_PER_CPU_EMBED_FIRST_CHUNK - def_bool PPC64 + def_bool y if PPC64 + +config NEED_PER_CPU_PAGE_FIRST_CHUNK + def_bool y if PPC64 config NR_IRQS int "Number of virtual interrupt numbers" @@ -103,24 +102,14 @@ bool default y -config RWSEM_GENERIC_SPINLOCK - bool - -config RWSEM_XCHGADD_ALGORITHM - bool - default y - config GENERIC_LOCKBREAK bool default y - depends on SMP && PREEMPT + depends on SMP && PREEMPTION config GENERIC_HWEIGHT bool default y - -config ARCH_HAS_DMA_SET_COHERENT_MASK - bool config PPC bool @@ -128,36 +117,49 @@ # # Please keep this list sorted alphabetically. # + select ARCH_32BIT_OFF_T if PPC32 + select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEVMEM_IS_ALLOWED - select ARCH_HAS_DMA_SET_COHERENT_MASK select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_KCOV + select ARCH_HAS_HUGEPD if HUGETLB_PAGE + select ARCH_HAS_MEMREMAP_COMPAT_ALIGN + select ARCH_HAS_MMIOWB if PPC64 select ARCH_HAS_PHYS_TO_DMA - select ARCH_HAS_PMEM_API if PPC64 + select ARCH_HAS_PMEM_API + select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE + select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64 select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_MEMBARRIER_CALLBACKS - select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE - select ARCH_HAS_SG_CHAIN + select ARCH_HAS_MEMBARRIER_SYNC_CORE + select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 select ARCH_HAS_STRICT_KERNEL_RWX if (PPC32 && !HIBERNATION) select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_UACCESS_FLUSHCACHE if PPC64 + select ARCH_HAS_UACCESS_FLUSHCACHE + select ARCH_HAS_COPY_MC if PPC64 select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_ZONE_DEVICE if PPC_BOOK3S_64 select ARCH_HAVE_NMI_SAFE_CMPXCHG + select ARCH_KEEP_MEMBLOCK select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF if PPC64 + select ARCH_USE_QUEUED_RWLOCKS if PPC_QUEUED_SPINLOCKS + select ARCH_USE_QUEUED_SPINLOCKS if PPC_QUEUED_SPINLOCKS select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_IRQS_OFF_ACTIVATE_MM + select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WEAK_RELEASE_ACQUIRE select BINFMT_ELF - select BUILDTIME_EXTABLE_SORT + select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN + select DMA_OPS if PPC64 + select DMA_OPS_BYPASS if PPC64 select DYNAMIC_FTRACE if FUNCTION_TRACER select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT @@ -167,45 +169,57 @@ select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC + select GENERIC_EARLY_IOREMAP select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL + select GENERIC_PCI_IOMAP if PCI select GENERIC_SMP_IDLE_THREAD select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select GENERIC_TIME_VSYSCALL select HAVE_ARCH_AUDITSYSCALL + select HAVE_ARCH_HUGE_VMAP if PPC_BOOK3S_64 && PPC_RADIX_MMU select HAVE_ARCH_JUMP_LABEL + select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14 + select HAVE_ARCH_KASAN_VMALLOC if PPC32 && PPC_PAGE_SHIFT <= 14 select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT + select HAVE_ARCH_NVRAM_OPS select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK + select HAVE_ASM_MODVERSIONS + select HAVE_C_RECORDMCOUNT select HAVE_CBPF_JIT if !PPC64 + select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13) + select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2) select HAVE_CONTEXT_TRACKING if PPC64 + select HAVE_TIF_NOHZ if PPC64 select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL select HAVE_EBPF_JIT if PPC64 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU) + select HAVE_FAST_GUP select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_FUNCTION_ERROR_INJECTION select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER select HAVE_GCC_PLUGINS if GCC_VERSION >= 50200 # plugin support on gcc <= 5.1 is buggy on PPC - select HAVE_GENERIC_GUP select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) select HAVE_IDE select HAVE_IOREMAP_PROT select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_KERNEL_GZIP - select HAVE_KERNEL_XZ if PPC_BOOK3S + select HAVE_KERNEL_LZMA if DEFAULT_UIMAGE + select HAVE_KERNEL_LZO if DEFAULT_UIMAGE + select HAVE_KERNEL_XZ if PPC_BOOK3S || 44x select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES select HAVE_LD_DEAD_CODE_DATA_ELIMINATION select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS - select HAVE_MEMBLOCK - select HAVE_MEMBLOCK_NODE_MAP select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI if PERF_EVENTS || (PPC64 && PPC_BOOK3S) select HAVE_HARDLOCKUP_DETECTOR_ARCH if PPC64 && PPC_BOOK3S && SMP @@ -216,9 +230,10 @@ select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP - select HAVE_RCU_TABLE_FREE if SMP + select MMU_GATHER_RCU_TABLE_FREE + select MMU_GATHER_PAGE_SIZE select HAVE_REGS_AND_STACK_ACCESS_API - select HAVE_RELIABLE_STACKTRACE if PPC64 && CPU_LITTLE_ENDIAN + select HAVE_RELIABLE_STACKTRACE if PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN select HAVE_SYSCALL_TRACEPOINTS select HAVE_VIRT_CPU_ACCOUNTING select HAVE_IRQ_TIME_ACCOUNTING @@ -229,28 +244,28 @@ select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE if PPC64 || NOT_COHERENT_CACHE select NEED_SG_DMA_LENGTH - select NO_BOOTMEM select OF select OF_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE select OF_EARLY_FLATTREE - select OF_RESERVED_MEM select OLD_SIGACTION if PPC32 select OLD_SIGSUSPEND + select PCI_DOMAINS if PCI + select PCI_MSI_ARCH_FALLBACKS if PCI_MSI + select PCI_SYSCALL if PCI + select PPC_DAWR if PPC64 select RTC_LIB select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE + select THREAD_INFO_IN_TASK select VIRT_TO_BUS if !PPC64 # # Please keep this list sorted alphabetically. # config PPC_BARRIER_NOSPEC - bool - default y - depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E - -config GENERIC_CSUM - def_bool n + bool + default y + depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E config EARLY_PRINTK bool @@ -261,8 +276,9 @@ default 180 config COMPAT - bool - default y if PPC64 + bool "Enable support for 32bit binaries" + depends on PPC64 + default y if !CPU_LITTLE_ENDIAN select COMPAT_BINFMT_ELF select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION @@ -271,11 +287,6 @@ bool depends on COMPAT && SYSVIPC default y - -# All PPC32s use generic nvram driver through ppc_md -config GENERIC_NVRAM - bool - default y if PPC32 config SCHED_OMIT_FRAME_POINTER bool @@ -287,12 +298,10 @@ config PPC_UDBG_16550 bool - default n config GENERIC_TBSYNC bool default y if PPC32 && SMP - default n config AUDIT_ARCH bool @@ -311,13 +320,11 @@ bool help Used to allow a board to specify it wants an ePAPR compliant wrapper. - default n config DEFAULT_UIMAGE bool help Used to allow a board to specify it wants a uImage built by default - default n config ARCH_HIBERNATION_POSSIBLE bool @@ -329,13 +336,15 @@ (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ || 44x || 40x +config ARCH_SUSPEND_NONZERO_CPU + def_bool y + depends on PPC_POWERNV || PPC_PSERIES + config PPC_DCR_NATIVE bool - default n config PPC_DCR_MMIO bool - default n config PPC_DCR bool @@ -346,7 +355,6 @@ bool depends on PCI depends on PPC64 # not supported on 32 bits yet - default n config ARCH_SUPPORTS_DEBUG_PAGEALLOC depends on PPC32 || PPC_BOOK3S_64 @@ -382,14 +390,16 @@ depends on PPC_ADV_DEBUG_REGS && 44x default y -config ZONE_DMA32 +config PPC_DAWR bool - default y if PPC64 + +config ZONE_DMA + bool + default y if PPC_BOOK3E_64 config PGTABLE_LEVELS int default 2 if !PPC64 - default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64 default 4 source "arch/powerpc/sysdev/Kconfig" @@ -401,17 +411,17 @@ bool "High memory support" depends on PPC32 -source kernel/Kconfig.hz +source "kernel/Kconfig.hz" config HUGETLB_PAGE_SIZE_VARIABLE bool - depends on HUGETLB_PAGE + depends on HUGETLB_PAGE && PPC_BOOK3S_64 default y config MATH_EMULATION bool "Math emulation" depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE - ---help--- + help Some PowerPC chips designed for embedded applications do not have a floating-point unit and therefore do not implement the floating-point instructions in the PowerPC instruction set. If you @@ -430,33 +440,44 @@ config MATH_EMULATION_FULL bool "Emulate all the floating point instructions" - ---help--- + help Select this option will enable the kernel to support to emulate all the floating point instructions. If your SoC doesn't have a FPU, you should select this. config MATH_EMULATION_HW_UNIMPLEMENTED bool "Just emulate the FPU unimplemented instructions" - ---help--- + help Select this if you know there does have a hardware FPU on your SoC, but some floating point instructions are not implemented by that. endchoice config PPC_TRANSACTIONAL_MEM - bool "Transactional Memory support for POWERPC" - depends on PPC_BOOK3S_64 - depends on SMP - select ALTIVEC - select VSX - default n - ---help--- - Support user-mode Transactional Memory on POWERPC. + bool "Transactional Memory support for POWERPC" + depends on PPC_BOOK3S_64 + depends on SMP + select ALTIVEC + select VSX + help + Support user-mode Transactional Memory on POWERPC. + +config PPC_UV + bool "Ultravisor support" + depends on KVM_BOOK3S_HV_POSSIBLE + depends on DEVICE_PRIVATE + default n + help + This option paravirtualizes the kernel to run in POWER platforms that + supports the Protected Execution Facility (PEF). On such platforms, + the ultravisor firmware runs at a privilege level above the + hypervisor. + + If unsure, say "N". config LD_HEAD_STUB_CATCH bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT depends on PPC64 - default n help Very large kernels can cause linker branch stubs to be generated by code in head_64.S, which moves the head text sections out of their @@ -465,27 +486,37 @@ If unsure, say "N". config MPROFILE_KERNEL - depends on PPC64 && CPU_LITTLE_ENDIAN + depends on PPC64 && CPU_LITTLE_ENDIAN && FUNCTION_TRACER def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__) config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" depends on SMP && (PPC_PSERIES || \ - PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE) - ---help--- + PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE) + help Say Y here to be able to disable and re-enable individual CPUs at runtime on SMP machines. Say N if you are unsure. + +config PPC_QUEUED_SPINLOCKS + bool "Queued spinlocks" + depends on SMP + help + Say Y here to use queued spinlocks which give better scalability and + fairness on large SMP and NUMA systems without harming single threaded + performance. + + This option is currently experimental, the code is more complex and + less tested so it defaults to "N" for the moment. + + If unsure, say "N". config ARCH_CPU_PROBE_RELEASE def_bool y depends on HOTPLUG_CPU config ARCH_ENABLE_MEMORY_HOTPLUG - def_bool y - -config ARCH_HAS_WALK_MEMORY def_bool y config ARCH_ENABLE_MEMORY_HOTREMOVE @@ -520,6 +551,7 @@ select KEXEC_CORE select HAVE_IMA_KEXEC select BUILD_BIN2C + select KEXEC_ELF depends on PPC64 depends on CRYPTO=y depends on CRYPTO_SHA256=y @@ -556,10 +588,20 @@ setting can still be useful to bootwrappers that need to know the load address of the kernel (eg. u-boot/mkimage). +config RANDOMIZE_BASE + bool "Randomize the address of the kernel image" + depends on (FSL_BOOKE && FLATMEM && PPC32) + depends on RELOCATABLE + help + Randomizes the virtual address at which the kernel image is + loaded, as a security feature that deters exploit attempts + relying on knowledge of the location of kernel internals. + + If unsure, say Y. + config RELOCATABLE_TEST bool "Test relocatable kernel" depends on (PPC64 && RELOCATABLE) - default n help This runs the relocatable kernel at the address it was initially loaded at, which tends to be non-zero and therefore test the @@ -567,7 +609,7 @@ config CRASH_DUMP bool "Build a dump capture kernel" - depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) + depends on PPC64 || PPC_BOOK3S_32 || FSL_BOOKE || (44x && !SMP) select RELOCATABLE if PPC64 || 44x || FSL_BOOKE help Build a kernel suitable for use as a dump capture kernel. @@ -576,7 +618,7 @@ config FA_DUMP bool "Firmware-assisted dump" - depends on PPC64 && PPC_RTAS + depends on PPC64 && (PPC_RTAS || PPC_POWERNV) select CRASH_CORE select CRASH_DUMP help @@ -587,7 +629,26 @@ is meant to be a kdump replacement offering robustness and speed not possible without system firmware assistance. - If unsure, say "N" + If unsure, say "y". Only special kernels like petitboot may + need to say "N" here. + +config PRESERVE_FA_DUMP + bool "Preserve Firmware-assisted dump" + depends on PPC64 && PPC_POWERNV && !FA_DUMP + help + On a kernel with FA_DUMP disabled, this option helps to preserve + crash data from a previously crash'ed kernel. Useful when the next + memory preserving kernel boot would process this crash data. + Petitboot kernel is the typical usecase for this option. + +config OPAL_CORE + bool "Export OPAL memory as /sys/firmware/opal/core" + depends on PPC64 && PPC_POWERNV + help + This option uses the MPIPL support in firmware to provide an + ELF core of OPAL memory after a crash. The ELF core is exported + as /sys/firmware/opal/core file which is helpful in debugging + OPAL crashes using GDB. config IRQ_ALL_CPUS bool "Distribute interrupts on all CPUs by default" @@ -648,15 +709,6 @@ def_bool y depends on MEMORY_HOTPLUG -# Some NUMA nodes have memory ranges that span -# other nodes. Even though a pfn is valid and -# between a node's start and end pfns, it may not -# reside on that node. See memmap_init_zone() -# for details. -config NODES_SPAN_OTHER_NODES - def_bool y - depends on NEED_MULTIPLE_NODES - config STDBINUTILS bool "Using standard binutils settings" depends on 44x @@ -704,7 +756,7 @@ config PPC_64K_PAGES bool "64k page size" - depends on !PPC_FSL_BOOK3E && (44x || PPC_BOOK3S_64 || PPC_BOOK3E_64) + depends on 44x || PPC_BOOK3S_64 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 config PPC_256K_PAGES @@ -722,6 +774,13 @@ endchoice +config PPC_PAGE_SHIFT + int + default 18 if PPC_256K_PAGES + default 16 if PPC_64K_PAGES + default 14 if PPC_16K_PAGES + default 12 + config THREAD_SHIFT int "Thread shift" if EXPERT range 13 15 @@ -731,6 +790,39 @@ help Used to define the stack size. The default is almost always what you want. Only change this if you know what you are doing. + +config DATA_SHIFT_BOOL + bool "Set custom data alignment" + depends on ADVANCED_OPTIONS + depends on STRICT_KERNEL_RWX || DEBUG_PAGEALLOC + depends on PPC_BOOK3S_32 || (PPC_8xx && !PIN_TLB_DATA && \ + (!PIN_TLB_TEXT || !STRICT_KERNEL_RWX)) + help + This option allows you to set the kernel data alignment. When + RAM is mapped by blocks, the alignment needs to fit the size and + number of possible blocks. The default should be OK for most configs. + + Say N here unless you know what you are doing. + +config DATA_SHIFT + int "Data shift" if DATA_SHIFT_BOOL + default 24 if STRICT_KERNEL_RWX && PPC64 + range 17 28 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC) && PPC_BOOK3S_32 + range 19 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC) && PPC_8xx + default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + default 18 if DEBUG_PAGEALLOC && PPC_BOOK3S_32 + default 23 if STRICT_KERNEL_RWX && PPC_8xx + default 23 if DEBUG_PAGEALLOC && PPC_8xx && PIN_TLB_DATA + default 19 if DEBUG_PAGEALLOC && PPC_8xx + default PPC_PAGE_SHIFT + help + On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO. + Smaller is the alignment, greater is the number of necessary DBATs. + + On 8xx, large pages (512kb or 8M) are used to map kernel linear + memory. Aligning to 8M reduces TLB misses as only 8M pages are used + in that case. If PIN_TLB is selected, it must be aligned to 8M as + 8M pages will be pinned. config FORCE_MAX_ZONEORDER int "Maximum zone order" @@ -762,16 +854,30 @@ this in mind when choosing a value for this option. config PPC_SUBPAGE_PROT - bool "Support setting protections for 4k subpages" + bool "Support setting protections for 4k subpages (subpage_prot syscall)" + default n depends on PPC_BOOK3S_64 && PPC_64K_PAGES help - This option adds support for a system call to allow user programs + This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page. + If unsure, say N here. + +config PPC_PROT_SAO_LPAR + bool "Support PROT_SAO mappings in LPARs" + depends on PPC_BOOK3S_64 + help + This option adds support for PROT_SAO mappings from userspace + inside LPARs on supported CPUs. + + This may cause issues when performing guest migration from + a CPU that supports SAO to one that does not. + + If unsure, say N here. + config PPC_COPRO_BASE bool - default n config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" @@ -785,31 +891,45 @@ bool "PowerPC denormalisation exception handling" depends on PPC_BOOK3S_64 default "y" if PPC_POWERNV - ---help--- + help Add support for handling denormalisation of single precision values. Useful for bare metal only. If unsure say Y here. -config CMDLINE_BOOL - bool "Default bootloader kernel arguments" - config CMDLINE string "Initial kernel command string" - depends on CMDLINE_BOOL - default "console=ttyS0,9600 console=tty0 root=/dev/sda2" + default "" help On some platforms, there is currently no way for the boot loader to pass arguments to the kernel. For these platforms, you can supply some command-line options at build time by entering them here. In most cases you will need to specify the root device here. +choice + prompt "Kernel command line type" if CMDLINE != "" + default CMDLINE_FROM_BOOTLOADER + +config CMDLINE_FROM_BOOTLOADER + bool "Use bootloader kernel arguments if available" + help + Uses the command-line options passed by the boot loader. If + the boot loader doesn't provide any, the default kernel command + string provided in CMDLINE will be used. + +config CMDLINE_EXTEND + bool "Extend bootloader kernel arguments" + help + The command-line arguments provided by the boot loader will be + appended to the default kernel command string. + config CMDLINE_FORCE bool "Always use the default kernel command string" - depends on CMDLINE_BOOL help Always use the default kernel command string, even if the boot loader passes other arguments to the kernel. This is useful if you cannot or don't want to change the command-line options your boot loader passes to the kernel. + +endchoice config EXTRA_TARGETS string "Additional default image types" @@ -828,24 +948,7 @@ def_bool y depends on ADB_PMU -source kernel/power/Kconfig - -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - default y - help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc/<pid>/seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. - - If unsure, say Y. Only embedded should say N here. +source "kernel/power/Kconfig" config PPC_MEM_KEYS prompt "PowerPC Memory Protection Keys" @@ -858,9 +961,45 @@ page-based protections, but without requiring modification of the page tables when an application changes protection domains. - For details, see Documentation/vm/protection-keys.rst + For details, see Documentation/core-api/protection-keys.rst If unsure, say y. + +config PPC_SECURE_BOOT + prompt "Enable secure boot support" + bool + depends on PPC_POWERNV || PPC_PSERIES + depends on IMA_ARCH_POLICY + imply IMA_SECURE_AND_OR_TRUSTED_BOOT + help + Systems with firmware secure boot enabled need to define security + policies to extend secure boot to the OS. This config allows a user + to enable OS secure boot on systems that have firmware support for + it. If in doubt say N. + +config PPC_SECVAR_SYSFS + bool "Enable sysfs interface for POWER secure variables" + default y + depends on PPC_SECURE_BOOT + depends on SYSFS + help + POWER secure variables are managed and controlled by firmware. + These variables are exposed to userspace via sysfs to enable + read/write operations on these variables. Say Y if you have + secure boot enabled and want to expose variables to userspace. + +config PPC_RTAS_FILTER + bool "Enable filtering of RTAS syscalls" + default y + depends on PPC_RTAS + help + The RTAS syscall API has security issues that could be used to + compromise system integrity. This option enforces restrictions on the + RTAS calls and arguments passed by userspace programs to mitigate + these issues. + + Say Y unless you know what you are doing and the filter is causing + problems for you. endmenu @@ -881,10 +1020,6 @@ have an IBM RS/6000 or pSeries machine, say Y. If you have an embedded board, consult your board documentation. -config ZONE_DMA - bool - default y - config GENERIC_ISA_DMA bool depends on ISA_DMA_API @@ -894,10 +1029,6 @@ bool depends on PCI default y if 40x || 44x - default n - -config EISA - bool config SBUS bool @@ -906,7 +1037,8 @@ bool config FSL_PCI - bool + bool + select ARCH_HAS_DMA_SET_MASK select PPC_INDIRECT_PCI select PCI_QUIRKS @@ -943,91 +1075,24 @@ help Freescale General-purpose Timers support -# Yes MCA RS/6000s exist but Linux-PPC does not currently support any -config MCA - bool - -# Platforms that what PCI turned unconditionally just do select PCI -# in their config node. Platforms that want to choose at config -# time should select PPC_PCI_CHOICE -config PPC_PCI_CHOICE - bool - -config PCI - bool "PCI support" if PPC_PCI_CHOICE - default y if !40x && !CPM2 && !PPC_8xx && !PPC_83xx \ - && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON - default PCI_QSPAN if PPC_8xx - select GENERIC_PCI_IOMAP - help - Find out whether your system includes a PCI bus. PCI is the name of - a bus system, i.e. the way the CPU talks to the other stuff inside - your box. If you say Y here, the kernel will include drivers and - infrastructure code to support PCI bus devices. - -config PCI_DOMAINS - def_bool PCI - -config PCI_SYSCALL - def_bool PCI - -config PCI_QSPAN - bool "QSpan PCI" - depends on PPC_8xx - select PPC_I8259 - help - Say Y here if you have a system based on a Motorola 8xx-series - embedded processor with a QSPAN PCI interface, otherwise say N. - config PCI_8260 bool depends on PCI && 8260 select PPC_INDIRECT_PCI default y -source "drivers/pci/Kconfig" - -source "drivers/pcmcia/Kconfig" - -config HAS_RAPIDIO - bool - default n - -config RAPIDIO - tristate "RapidIO support" - depends on HAS_RAPIDIO || PCI - help - If you say Y here, the kernel will include drivers and - infrastructure code to support RapidIO interconnect devices. - config FSL_RIO bool "Freescale Embedded SRIO Controller support" - depends on RAPIDIO = y && HAS_RAPIDIO + depends on RAPIDIO = y && HAVE_RAPIDIO default "n" - ---help--- + help Include support for RapidIO controller on Freescale embedded processors (MPC8548, MPC8641, etc). - -source "drivers/rapidio/Kconfig" - -config PPC_RTAS_FILTER - bool "Enable filtering of RTAS syscalls" - default y - depends on PPC_RTAS - help - The RTAS syscall API has security issues that could be used to - compromise system integrity. This option enforces restrictions on the - RTAS calls and arguments passed by userspace programs to mitigate - these issues. - - Say Y unless you know what you are doing and the filter is causing - problems for you. endmenu config NONSTATIC_KERNEL bool - default n menu "Advanced setup" depends on PPC32 @@ -1084,14 +1149,14 @@ select NONSTATIC_KERNEL help This option enables the kernel to be loaded at any page aligned - physical address. The kernel creates a mapping from KERNELBASE to + physical address. The kernel creates a mapping from KERNELBASE to the address where the kernel is loaded. The page size here implies the TLB page size of the mapping for kernel on the particular platform. Please refer to the init code for finding the TLB page size. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE kernel image, where the only restriction is the page aligned kernel - load address. When this option is enabled, the compile time physical + load address. When this option is enabled, the compile time physical address CONFIG_PHYSICAL_START is ignored. This option is overridden by CONFIG_RELOCATABLE @@ -1137,7 +1202,7 @@ config PHYSICAL_START hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL - default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL + default "0x02000000" if PPC_BOOK3S && CRASH_DUMP && !NONSTATIC_KERNEL default "0x00000000" config PHYSICAL_ALIGN @@ -1161,39 +1226,8 @@ config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" if PPC_8xx + default "0xb0000000" if PPC_BOOK3S_32 && STRICT_KERNEL_RWX default "0xc0000000" - -config CONSISTENT_SIZE_BOOL - bool "Set custom consistent memory pool size" - depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE - help - This option allows you to set the size of the - consistent memory pool. This pool of virtual memory - is used to make consistent memory allocations. - -config CONSISTENT_SIZE - hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL - default "0x00200000" if NOT_COHERENT_CACHE - -config PIN_TLB - bool "Pinned Kernel TLBs (860 ONLY)" - depends on ADVANCED_OPTIONS && PPC_8xx && \ - !DEBUG_PAGEALLOC && !STRICT_KERNEL_RWX - -config PIN_TLB_DATA - bool "Pinned TLB for DATA" - depends on PIN_TLB - default y - -config PIN_TLB_IMMR - bool "Pinned TLB for IMMR" - depends on PIN_TLB - default y - -config PIN_TLB_TEXT - bool "Pinned TLB for TEXT" - depends on PIN_TLB - default y endmenu if PPC64 -- Gitblit v1.6.2