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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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9ee3b3f4a5
Here is the arch/csky patch set for the 4.21-rc1 merge window. Contianed in here is three features (cpu_hotplug, basic ftrace, basic perf) and some bugfixes. -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE2KAv+isbWR/viAKHAXH1GYaIxXsFAlwtr/MSHHJlbl9ndW9A Yy1za3kuY29tAAoJEAFx9RmGiMV7WD0P/2neOLEqPA9f0E3pmzdRiKYQa9D932BD pl9zhQalexVDz8aEYA0ClsgQwg97OTZFMCf3TPm2aOotTHk5QHforee3A4G5IKZ5 a7oDURapg8DmQpyxjJ2TLv+kfR9OihxpGHTuaj3rAK38Z9+TKcvspRCgISYf4Oyz RJPXc8cpM2j/+uLly00h0Rxkl9rHcCukLYFxghZ4oyGamoFvz43BBkk0BR2A/3h8 r3f1zyefUSkY21PgLlIspa9Kg5QEuDFSQTdAAUkJyRmKG4n6gNABuZchKlLaopXp 2R1sm/FgoLS75p65uLRves4zMlzxoP6+suJoKIKLqBMJ4KeUTH3jQ9fFGaUyNI+b rV8AzmbAh3hAbs6QcCjDrsbo4PLb/r5+Nuzt2fu2VAiXIB+18EUOtqLse40OrySR SvdypMd4H0q9KD+NoKXPYjYM2ja1Yyedg3BChMeP6AYUsqOkOIg2Z0UebXLLabJ7 lp93ObMS2iAfKat9LGk2jz/LkRzMha4VqMgiQ4QubgzYXD+ySBB5yhzWqIBRDJ+Z hZCZEyc6vzAZ5yrh1xiQKUqilpTupmLp9nJOHQ8rUEjjCnJBiZpj5itZmNZwiH1M XZh1XCFCzt37a+vfGy3viG9xtVuMEbyRMMbcyxans75Xh6U36C6/GoDSmb1rZcf2 u1yQRWUqXLBy =YVII -----END PGP SIGNATURE----- Merge tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux Pull arch/csky updates from Guo Ren: "Here are three main features (cpu_hotplug, basic ftrace, basic perf) and some bugfixes: Features: - Add CPU-hotplug support for SMP - Add ftrace with function trace and function graph trace - Add Perf support - Add EM_CSKY_OLD 39 - optimize kernel panic print. - remove syscall_exit_work Bugfixes: - fix abiv2 mmap(... O_SYNC) failure - fix gdb coredump error - remove vdsp implement for kernel - fix qemu failure to bootup sometimes - fix ftrace call-graph panic - fix device tree node reference leak - remove meaningless header-y - fix save hi,lo,dspcr regs in switch_stack - remove unused members in processor.h" * tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux: csky: Add perf support for C-SKY csky: Add EM_CSKY_OLD 39 clocksource/drivers/c-sky: fixup ftrace call-graph panic csky: ftrace call graph supported. csky: basic ftrace supported csky: remove unused members in processor.h csky: optimize kernel panic print. csky: stacktrace supported. csky: CPU-hotplug supported for SMP clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes. csky: fixup save hi,lo,dspcr regs in switch_stack. csky: remove syscall_exit_work csky: fixup remove vdsp implement for kernel. csky: bugfix gdb coredump error. csky: fixup abiv2 mmap(... O_SYNC) failed. csky: define syscall_get_arch() elf-em.h: add EM_CSKY csky: remove meaningless header-y csky: Don't leak device tree node reference
230 lines
4.5 KiB
Text
230 lines
4.5 KiB
Text
config CSKY
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def_bool y
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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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select ARCH_USE_BUILTIN_BSWAP
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select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
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select COMMON_CLK
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select CLKSRC_MMIO
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select CLKSRC_OF
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select DMA_DIRECT_REMAP
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select IRQ_DOMAIN
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select HANDLE_DOMAIN_IRQ
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select DW_APB_TIMER_OF
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select GENERIC_LIB_ASHLDI3
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select GENERIC_LIB_ASHRDI3
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select GENERIC_LIB_LSHRDI3
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select GENERIC_LIB_MULDI3
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select GENERIC_LIB_CMPDI2
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select GENERIC_LIB_UCMPDI2
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select GENERIC_ALLOCATOR
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select GENERIC_ATOMIC64
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select GENERIC_CLOCKEVENTS
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select GENERIC_CPU_DEVICES
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select GENERIC_IRQ_CHIP
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_IRQ_MULTI_HANDLER
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select GENERIC_SCHED_CLOCK
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select GENERIC_SMP_IDLE_THREAD
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select HAVE_ARCH_TRACEHOOK
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_GENERIC_DMA_COHERENT
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_LZO
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select HAVE_KERNEL_LZMA
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select HAVE_PERF_EVENTS
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select HAVE_C_RECORDMCOUNT
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select HAVE_DMA_API_DEBUG
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select HAVE_DMA_CONTIGUOUS
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select MAY_HAVE_SPARSE_IRQ
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select MODULES_USE_ELF_RELA if MODULES
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select OF
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select OF_EARLY_FLATTREE
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select OF_RESERVED_MEM
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select PERF_USE_VMALLOC if CPU_CK610
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select RTC_LIB
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select TIMER_OF
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select USB_ARCH_HAS_EHCI
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select USB_ARCH_HAS_OHCI
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config CPU_HAS_CACHEV2
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bool
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config CPU_HAS_FPUV2
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bool
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config CPU_HAS_HILO
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bool
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config CPU_HAS_TLBI
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bool
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config CPU_HAS_LDSTEX
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bool
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help
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For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
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config CPU_NEED_TLBSYNC
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bool
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config CPU_NEED_SOFTALIGN
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bool
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config CPU_NO_USER_BKPT
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bool
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help
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For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
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abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
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So we need a 16bit instruction as user space bkpt, and it will cause an illegal
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instruction exception.
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In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config GENERIC_HWEIGHT
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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 RWSEM_GENERIC_SPINLOCK
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def_bool y
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config STACKTRACE_SUPPORT
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def_bool y
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config TIME_LOW_RES
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config CPU_TLB_SIZE
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int
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default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
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default "1024" if (CPU_CK860)
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config CPU_ASID_BITS
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int
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default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
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default "12" if (CPU_CK860)
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config L1_CACHE_SHIFT
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int
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default "4" if (CPU_CK610)
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default "5" if (CPU_CK807 || CPU_CK810)
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default "6" if (CPU_CK860)
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menu "Processor type and features"
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choice
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prompt "CPU MODEL"
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default CPU_CK807
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config CPU_CK610
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bool "CSKY CPU ck610"
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select CPU_NEED_TLBSYNC
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select CPU_NEED_SOFTALIGN
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select CPU_NO_USER_BKPT
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config CPU_CK810
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bool "CSKY CPU ck810"
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select CPU_HAS_HILO
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select CPU_NEED_TLBSYNC
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config CPU_CK807
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bool "CSKY CPU ck807"
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select CPU_HAS_HILO
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config CPU_CK860
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bool "CSKY CPU ck860"
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select CPU_HAS_TLBI
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select CPU_HAS_CACHEV2
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select CPU_HAS_LDSTEX
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select CPU_HAS_FPUV2
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endchoice
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choice
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prompt "C-SKY PMU type"
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depends on PERF_EVENTS
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depends on CPU_CK807 || CPU_CK810 || CPU_CK860
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config CPU_PMU_NONE
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bool "None"
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config CSKY_PMU_V1
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bool "Performance Monitoring Unit Ver.1"
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endchoice
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choice
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prompt "Power Manager Instruction (wait/doze/stop)"
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default CPU_PM_NONE
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config CPU_PM_NONE
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bool "None"
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config CPU_PM_WAIT
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bool "wait"
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config CPU_PM_DOZE
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bool "doze"
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config CPU_PM_STOP
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bool "stop"
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endchoice
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config CPU_HAS_VDSP
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bool "CPU has VDSP coprocessor"
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depends on CPU_HAS_FPU && CPU_HAS_FPUV2
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config CPU_HAS_FPU
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bool "CPU has FPU coprocessor"
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depends on CPU_CK807 || CPU_CK810 || CPU_CK860
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config CPU_HAS_TEE
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bool "CPU has Trusted Execution Environment"
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depends on CPU_CK810
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config SMP
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bool "Symmetric Multi-Processing (SMP) support for C-SKY"
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depends on CPU_CK860
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default n
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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 "2"
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config HIGHMEM
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bool "High Memory Support"
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depends on !CPU_CK610
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default y
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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default "11"
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config RAM_BASE
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hex "DRAM start addr (the same with memory-section in dts)"
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default 0x0
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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select GENERIC_IRQ_MIGRATION
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depends on SMP
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help
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Say Y here to allow turning CPUs off and on. CPUs can be
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controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
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Say N if you want to disable CPU hotplug.
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endmenu
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source "kernel/Kconfig.hz"
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