select GENERIC_CLOCKEVENTS
select VIRT_TO_BUS
select GENERIC_IRQ_SHOW
- select GENERIC_CPU_DEVICES
select GENERIC_SCHED_CLOCK
select MODULES_USE_ELF_RELA
select GENERIC_PCI_IOMAP
select IRQ_DOMAIN
select HAVE_OPROFILE
select HAVE_FUNCTION_TRACER
+ select HAVE_IRQ_TIME_ACCOUNTING
+ select HAVE_PERF_EVENTS
+ select COMMON_CLK
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
primarily for embedded systems. These processors are both
config HAVE_XTENSA_GPIO32
def_bool n
+config MAY_HAVE_SMP
+ def_bool n
+
menu "Processor type and features"
choice
config XTENSA_VARIANT_FSF
bool "fsf - default (not generic) configuration"
select MMU
- select HAVE_XTENSA_GPIO32
config XTENSA_VARIANT_DC232B
bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
source "kernel/Kconfig.preempt"
+config HAVE_SMP
+ bool "System Supports SMP (MX)"
+ depends on MAY_HAVE_SMP
+ select XTENSA_MX
+ help
+ This option is use to indicate that the system-on-a-chip (SOC)
+ supports Multiprocessing. Multiprocessor support implemented above
+ the CPU core definition and currently needs to be selected manually.
+
+ Multiprocessor support in implemented with external cache and
+ interrupt controlers.
+
+ The MX interrupt distributer adds Interprocessor Interrupts
+ and causes the IRQ numbers to be increased by 4 for devices
+ like the open cores ethernet driver and the serial interface.
+
+ You still have to select "Enable SMP" to enable SMP on this SOC.
+
+config SMP
+ bool "Enable Symmetric multi-processing support"
+ depends on HAVE_SMP
+ select GENERIC_SMP_IDLE_THREAD
+ help
+ Enabled SMP Software; allows more than one CPU/CORE
+ to be activated during startup.
+
+config NR_CPUS
+ depends on SMP
+ int "Maximum number of CPUs (2-32)"
+ range 2 32
+ default "4"
+
+config HOTPLUG_CPU
+ bool "Enable CPU hotplug support"
+ depends on SMP
+ help
+ Say Y here to allow turning CPUs off and on. CPUs can be
+ controlled through /sys/devices/system/cpu.
+
+ Say N if you want to disable CPU hotplug.
+
config MATH_EMULATION
bool "Math emulation"
help
config SERIAL_CONSOLE
def_bool n
-config XTENSA_ISS_NETWORK
- def_bool n
-
menu "Bus options"
config PCI
depends on TTY
select XTENSA_CALIBRATE_CCOUNT
select SERIAL_CONSOLE
- select XTENSA_ISS_NETWORK
help
ISS is an acronym for Tensilica's Instruction Set Simulator.