diff options
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 101 |
1 files changed, 69 insertions, 32 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 35e038a974c..747a9c1228f 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -308,6 +308,7 @@ config MIPS_ATLAS select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN + select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL help This enables support for the MIPS Technologies Atlas evaluation board. @@ -324,6 +325,7 @@ config MIPS_MALTA select I8259 select MIPS_BOARDS_GEN select MIPS_BONITO64 + select MIPS_CPU_SCACHE select MIPS_GT64120 select MIPS_MSC select SWAP_IO_SPACE @@ -336,6 +338,7 @@ config MIPS_MALTA select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN + select SYS_SUPPORTS_MULTITHREADING help This enables support for the MIPS Technologies Malta evaluation board. @@ -358,7 +361,7 @@ config MIPS_SEAD board. config WR_PPMC - bool "Support for Wind River PPMC board" + bool "Wind River PPMC board" select IRQ_CPU select BOOT_ELF32 select DMA_NONCOHERENT @@ -536,6 +539,7 @@ config PMC_YOSEMITE select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM + select SYS_SUPPORTS_SMP help Yosemite is an evaluation board for the RM9000x2 processor manufactured by PMC-Sierra. @@ -590,6 +594,7 @@ config SGI_IP22 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN + select SYS_SUPPORTS_SMP help This are the SGI Indy, Challenge S and Indigo2, as well as certain OEM variants like the Tandem CMN B006S. To compile a Linux kernel @@ -601,6 +606,7 @@ config SGI_IP27 select ARC64 select BOOT_ELF64 select DMA_IP27 + select EARLY_PRINTK select HW_HAS_PCI select PCI_DOMAINS select SYS_HAS_CPU_R10000 @@ -1249,7 +1255,7 @@ config CPU_R6000 select CPU_SUPPORTS_32BIT_KERNEL help MIPS Technologies R6000 and R6000A series processors. Note these - processors are extremly rare and the support for them is incomplete. + processors are extremely rare and the support for them is incomplete. config CPU_NEVADA bool "RM52xx" @@ -1370,7 +1376,7 @@ config SYS_HAS_CPU_SB1 endmenu # -# These two indicate any levelof the MIPS32 and MIPS64 architecture +# These two indicate any level of the MIPS32 and MIPS64 architecture # config CPU_MIPS32 bool @@ -1381,7 +1387,7 @@ config CPU_MIPS64 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 # -# These two indicate the revision of the architecture, either 32 bot 64 bit. +# These two indicate the revision of the architecture, either Release 1 or Release 2 # config CPU_MIPSR1 bool @@ -1474,6 +1480,13 @@ config IP22_CPU_SCACHE bool select BOARD_SCACHE +# +# Support for a MIPS32 / MIPS64 style S-caches +# +config MIPS_CPU_SCACHE + bool + select BOARD_SCACHE + config R5000_CPU_SCACHE bool select BOARD_SCACHE @@ -1493,32 +1506,57 @@ config SIBYTE_DMA_PAGEOPS config CPU_HAS_PREFETCH bool -config MIPS_MT - bool "Enable MIPS MT" - choice prompt "MIPS MT options" - depends on MIPS_MT + +config MIPS_MT_DISABLED + bool "Disable multithreading support." + help + Use this option if your workload can't take advantage of + MIPS hardware multithreading support. On systems that don't have + the option of an MT-enabled processor this option will be the only + option in this menu. config MIPS_MT_SMTC bool "SMTC: Use all TCs on all VPEs for SMP" + depends on CPU_MIPS32_R2 + #depends on CPU_MIPS64_R2 # once there is hardware ... + depends on SYS_SUPPORTS_MULTITHREADING select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_SRS + select MIPS_MT select SMP + help + This is a kernel model which is known a SMTC or lately has been + marketesed into SMVP. config MIPS_MT_SMP bool "Use 1 TC on each available VPE for SMP" + depends on SYS_SUPPORTS_MULTITHREADING + select CPU_MIPSR2_IRQ_VI + select CPU_MIPSR2_SRS + select MIPS_MT select SMP + help + This is a kernel model which is also known a VSMP or lately + has been marketesed into SMVP. config MIPS_VPE_LOADER bool "VPE loader support." - depends on MIPS_MT + depends on SYS_SUPPORTS_MULTITHREADING + select MIPS_MT help Includes a loader for loading an elf relocatable object onto another VPE and running it. endchoice +config MIPS_MT + bool + +config SYS_SUPPORTS_MULTITHREADING + bool + config MIPS_MT_FPAFF bool "Dynamic FPU affinity for FP-intensive threads" depends on MIPS_MT @@ -1575,32 +1613,23 @@ config CPU_HAS_LLSC config CPU_HAS_WB bool +# +# Vectored interrupt mode is an R2 feature +# config CPU_MIPSR2_IRQ_VI - bool "Vectored interrupt mode" - depends on CPU_MIPSR2 - help - Vectored interrupt mode allowing faster dispatching of interrupts. - The board support code needs to be written to take advantage of this - mode. Compatibility code is included to allow the kernel to run on - a CPU that does not support vectored interrupts. It's safe to - say Y here. + bool +# +# Extended interrupt mode is an R2 feature +# config CPU_MIPSR2_IRQ_EI - bool "External interrupt controller mode" - depends on CPU_MIPSR2 - help - Extended interrupt mode takes advantage of an external interrupt - controller to allow fast dispatching from many possible interrupt - sources. Say N unless you know that external interrupt support is - required. + bool +# +# Shadow registers are an R2 feature +# config CPU_MIPSR2_SRS - bool "Make shadow set registers available for interrupt handlers" - depends on CPU_MIPSR2_IRQ_VI || CPU_MIPSR2_IRQ_EI - help - Allow the kernel to use shadow register sets for fast interrupts. - Interrupt handlers must be specially written to use shadow sets. - Say N unless you know that shadow register set upport is needed. + bool config CPU_HAS_SYNC bool @@ -1618,6 +1647,11 @@ config GENERIC_IRQ_PROBE bool default y +config IRQ_PER_CPU + depends on SMP + bool + default y + # # - Highmem only makes sense for the 32-bit kernel. # - The current highmem code will only work properly on physically indexed @@ -1676,8 +1710,8 @@ source "mm/Kconfig" config SMP bool "Multi-Processing support" - depends on CPU_RM9000 || ((SIBYTE_BCM1x80 || SIBYTE_BCM1x55 || SIBYTE_SB1250 || QEMU) && !SIBYTE_STANDALONE) || SGI_IP27 || MIPS_MT_SMP || MIPS_MT_SMTC - ---help--- + depends on SYS_SUPPORTS_SMP + help This enables support for systems with more than one CPU. If you have a system with only one CPU, like most personal computers, say N. If you have a system with more than one CPU, say Y. @@ -1696,6 +1730,9 @@ config SMP If you don't know what to do here, say N. +config SYS_SUPPORTS_SMP + bool + config NR_CPUS int "Maximum number of CPUs (2-64)" range 2 64 |