select ARC32
select ARCH_MAY_HAVE_PC_FDC
select GENERIC_ISA_DMA
- select I8253
select I8259
select ISA
+ select PCSPEAKER
select SYS_HAS_CPU_R4X00
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
select DMA_COHERENT
select GENERIC_ISA_DMA
select HAVE_STD_PC_SERIAL_PORT
- select I8253
select I8259
select ISA
+ select PCSPEAKER
select SWAP_IO_SPACE
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
select HW_HAS_EISA
select HW_HAS_PCI
select IRQ_CPU
- select I8253
select I8259
select ISA
+ select PCSPEAKER
select SWAP_IO_SPACE if CPU_BIG_ENDIAN
select SYS_HAS_CPU_R4X00
select SYS_HAS_CPU_R5000
config SYS_HAS_CPU_SB1
bool
+#
+# CPU may reorder R->R, R->W, W->R, W->W
+# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
+#
config WEAK_ORDERING
bool
+
+#
+# CPU may reorder reads and writes beyond LL/SC
+# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
+#
+config WEAK_REORDERING_BEYOND_LLSC
+ bool
endmenu
#
it off), but ensures that IPIs are handled promptly even under
heavy I/O interrupt load.
+config MIPS_MT_SMTC_IM_BACKSTOP
+ bool "Use per-TC register bits as backstop for inhibited IM bits"
+ depends on MIPS_MT_SMTC
+ default y
+ help
+ To support multiple TC microthreads acting as "CPUs" within
+ a VPE, VPE-wide interrupt mask bits must be specially manipulated
+ during interrupt handling. To support legacy drivers and interrupt
+ controller management code, SMTC has a "backstop" to track and
+ if necessary restore the interrupt mask. This has some performance
+ impact on interrupt service overhead. Disable it only if you know
+ what you are doing.
+
config MIPS_VPE_LOADER_TOM
bool "Load VPE program into memory hidden from linux"
depends on MIPS_VPE_LOADER
bool
default y
-config I8253
+config PCSPEAKER
bool
source "drivers/pcmcia/Kconfig"