1 # SPDX-License-Identifier: GPL-2.0-only
4 select ARCH_32BIT_OFF_T
5 select ARCH_HAS_DMA_PREP_COHERENT
6 select ARCH_HAS_SYNC_DMA_FOR_CPU
7 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
8 select ARCH_USE_BUILTIN_BSWAP
9 select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
12 select CSKY_MPINTC if CPU_CK860
13 select CSKY_MP_TIMER if CPU_CK860
15 select DMA_DIRECT_REMAP
17 select HANDLE_DOMAIN_IRQ
18 select DW_APB_TIMER_OF
19 select GENERIC_IOREMAP
20 select GENERIC_LIB_ASHLDI3
21 select GENERIC_LIB_ASHRDI3
22 select GENERIC_LIB_LSHRDI3
23 select GENERIC_LIB_MULDI3
24 select GENERIC_LIB_CMPDI2
25 select GENERIC_LIB_UCMPDI2
26 select GENERIC_ALLOCATOR
27 select GENERIC_ATOMIC64
28 select GENERIC_CLOCKEVENTS
29 select GENERIC_CPU_DEVICES
30 select GENERIC_IRQ_CHIP
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_IRQ_MULTI_HANDLER
34 select GENERIC_SCHED_CLOCK
35 select GENERIC_SMP_IDLE_THREAD
36 select GX6605S_TIMER if CPU_CK610
37 select HAVE_ARCH_TRACEHOOK
38 select HAVE_ARCH_AUDITSYSCALL
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_FUNCTION_TRACER
41 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_FTRACE_MCOUNT_RECORD
43 select HAVE_KERNEL_GZIP
44 select HAVE_KERNEL_LZO
45 select HAVE_KERNEL_LZMA
46 select HAVE_PERF_EVENTS
48 select HAVE_PERF_USER_STACK_DUMP
49 select HAVE_DMA_CONTIGUOUS
50 select HAVE_STACKPROTECTOR
51 select HAVE_SYSCALL_TRACEPOINTS
52 select MAY_HAVE_SPARSE_IRQ
53 select MODULES_USE_ELF_RELA if MODULES
55 select OF_EARLY_FLATTREE
56 select PERF_USE_VMALLOC if CPU_CK610
59 select USB_ARCH_HAS_EHCI
60 select USB_ARCH_HAS_OHCI
61 select GENERIC_PCI_IOMAP
63 select PCI_DOMAINS_GENERIC if PCI
64 select PCI_SYSCALL if PCI
67 config CPU_HAS_CACHEV2
82 For SMP, CPU needs "ldex&stex" instructions for atomic operations.
84 config CPU_NEED_TLBSYNC
87 config CPU_NEED_SOFTALIGN
90 config CPU_NO_USER_BKPT
93 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
94 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
95 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
96 instruction exception.
97 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
99 config GENERIC_CALIBRATE_DELAY
105 config GENERIC_HWEIGHT
111 config STACKTRACE_SUPPORT
117 config TRACE_IRQFLAGS_SUPPORT
122 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
123 default "1024" if (CPU_CK860)
127 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
128 default "12" if (CPU_CK860)
130 config L1_CACHE_SHIFT
132 default "4" if (CPU_CK610)
133 default "5" if (CPU_CK807 || CPU_CK810)
134 default "6" if (CPU_CK860)
136 menu "Processor type and features"
143 bool "CSKY CPU ck610"
144 select CPU_NEED_TLBSYNC
145 select CPU_NEED_SOFTALIGN
146 select CPU_NO_USER_BKPT
149 bool "CSKY CPU ck810"
151 select CPU_NEED_TLBSYNC
154 bool "CSKY CPU ck807"
158 bool "CSKY CPU ck860"
160 select CPU_HAS_CACHEV2
161 select CPU_HAS_LDSTEX
166 prompt "C-SKY PMU type"
167 depends on PERF_EVENTS
168 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
174 bool "Performance Monitoring Unit Ver.1"
179 prompt "Power Manager Instruction (wait/doze/stop)"
196 bool "Tightly-Coupled/Sram Memory"
197 select GENERIC_ALLOCATOR
199 The implementation are not only used by TCM (Tightly-Coupled Meory)
200 but also used by sram on SOC bus. It follow existed linux tcm
201 software interface, so that old tcm application codes could be
210 int "Page count of ITCM size: NR*4KB"
223 int "Page count of DTCM size: NR*4KB"
230 bool "CPU has VDSP coprocessor"
231 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
234 bool "CPU has FPU coprocessor"
235 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
237 config CPU_HAS_ICACHE_INS
238 bool "CPU has Icache invalidate instructions"
239 depends on CPU_HAS_CACHEV2
242 bool "CPU has Trusted Execution Environment"
246 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
251 int "Maximum number of CPUs (2-32)"
257 bool "High Memory Support"
258 depends on !CPU_CK610
261 config FORCE_MAX_ZONEORDER
262 int "Maximum zone order"
266 hex "DRAM start addr (the same with memory-section in dts)"
270 bool "Support for hot-pluggable CPUs"
271 select GENERIC_IRQ_MIGRATION
274 Say Y here to allow turning CPUs off and on. CPUs can be
275 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
277 Say N if you want to disable CPU hotplug.
280 source "arch/csky/Kconfig.platforms"
282 source "kernel/Kconfig.hz"