diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 87 |
1 files changed, 68 insertions, 19 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 2890d36eb531..2d0be82c3061 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -119,21 +119,19 @@ config GENERIC_HWEIGHT bool default y -config ARCH_HAS_DMA_SET_COHERENT_MASK - bool - config PPC bool default y # # 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_PHYS_TO_DMA select ARCH_HAS_PMEM_API if PPC64 select ARCH_HAS_PTE_SPECIAL @@ -178,6 +176,7 @@ config PPC 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_CBPF_JIT if !PPC64 @@ -201,7 +200,7 @@ config PPC 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_XZ if PPC_BOOK3S || 44x select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES @@ -220,7 +219,7 @@ config PPC select HAVE_PERF_USER_STACK_DUMP select HAVE_RCU_TABLE_FREE if SMP 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 @@ -233,7 +232,6 @@ config PPC select NEED_SG_DMA_LENGTH select OF select OF_EARLY_FLATTREE - select OF_RESERVED_MEM select OLD_SIGACTION if PPC32 select OLD_SIGSUSPEND select PCI_DOMAINS if PCI @@ -241,6 +239,7 @@ config PPC 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. @@ -251,9 +250,6 @@ config PPC_BARRIER_NOSPEC default y depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E -config GENERIC_CSUM - def_bool n - config EARLY_PRINTK bool default y @@ -274,11 +270,6 @@ config SYSVIPC_COMPAT 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 default y @@ -478,9 +469,6 @@ config ARCH_CPU_PROBE_RELEASE config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y -config ARCH_HAS_WALK_MEMORY - def_bool y - config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y @@ -696,7 +684,7 @@ config PPC_16K_PAGES 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 @@ -714,6 +702,13 @@ config PPC_256K_PAGES 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 @@ -724,6 +719,59 @@ config THREAD_SHIFT 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 ETEXT_SHIFT_BOOL + bool "Set custom etext alignment" if STRICT_KERNEL_RWX && \ + (PPC_BOOK3S_32 || PPC_8xx) + depends on ADVANCED_OPTIONS + help + This option allows you to set the kernel end of text 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 ETEXT_SHIFT + int "_etext shift" if ETEXT_SHIFT_BOOL + range 17 28 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + range 19 23 if STRICT_KERNEL_RWX && PPC_8xx + default 17 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + default 19 if STRICT_KERNEL_RWX && PPC_8xx + default PPC_PAGE_SHIFT + help + On Book3S 32 (603+), IBATs are used to map kernel text. + Smaller is the alignment, greater is the number of necessary IBATs. + + 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. + +config DATA_SHIFT_BOOL + bool "Set custom data alignment" if STRICT_KERNEL_RWX && \ + (PPC_BOOK3S_32 || PPC_8xx) + depends on ADVANCED_OPTIONS + 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 && PPC_BOOK3S_32 + range 19 23 if STRICT_KERNEL_RWX && PPC_8xx + default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + default 23 if STRICT_KERNEL_RWX && 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. + config FORCE_MAX_ZONEORDER int "Maximum zone order" range 8 9 if PPC64 && PPC_64K_PAGES @@ -890,6 +938,7 @@ config FSL_SOC config FSL_PCI bool + select ARCH_HAS_DMA_SET_MASK select PPC_INDIRECT_PCI select PCI_QUIRKS |