OpenRISC: Build infrastructure

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 207 insertions, 0 deletions

diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
new file mode 100644
index 000000000000..4558bafbd1a2
--- /dev/null
+++ b/arch/openrisc/Kconfig
@@ -0,0 +1,207 @@
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/config-language.txt.
+#
+
+config OPENRISC
+        def_bool y
+        select OF
+        select OF_EARLY_FLATTREE
+        select HAVE_MEMBLOCK
+        select ARCH_WANT_OPTIONAL_GPIOLIB
+        select HAVE_ARCH_TRACEHOOK
+        select HAVE_GENERIC_HARDIRQS
+        select GENERIC_IRQ_CHIP
+        select GENERIC_IRQ_PROBE
+        select GENERIC_IRQ_SHOW
+        select GENERIC_IOMAP
+
+config MMU
+        def_bool y
+
+config WISHBONE_BUS_BIG_ENDIAN
+        def_bool y
+
+config SYMBOL_PREFIX
+        string
+        default ""
+
+config HAVE_DMA_ATTRS
+        def_bool y
+
+config UID16
+        def_bool y
+
+config RWSEM_GENERIC_SPINLOCK
+        def_bool y
+
+config RWSEM_XCHGADD_ALGORITHM
+        def_bool n
+
+config GENERIC_HWEIGHT
+        def_bool y
+
+config GENERIC_IOMAP
+        def_bool y
+
+config NO_IOPORT
+        def_bool y
+
+config GENERIC_GPIO
+        def_bool y
+
+config GENERIC_CLOCKEVENTS
+        def_bool y
+
+config TRACE_IRQFLAGS_SUPPORT
+        def_bool y
+
+# For now, use generic checksum functions
+#These can be reimplemented in assembly later if so inclined
+config GENERIC_CSUM
+        def_bool y
+
+config GENERIC_FIND_NEXT_BIT
+        def_bool y
+
+source "init/Kconfig"
+
+
+menu "Processor type and features"
+
+choice
+        prompt "Subarchitecture"
+        default OR1K_1200
+
+config OR1K_1200
+        bool "OR1200"
+        help
+          Generic OpenRISC 1200 architecture
+
+endchoice
+
+config OPENRISC_BUILTIN_DTB
+        string "Builtin DTB"
+        default ""
+
+menu "Class II Instructions"
+
+config OPENRISC_HAVE_INST_FF1
+        bool "Have instruction l.ff1"
+        default y
+        help
+          Select this if your implementation has the Class II instruction l.ff1
+
+config OPENRISC_HAVE_INST_FL1
+        bool "Have instruction l.fl1"
+        default y
+        help
+          Select this if your implementation has the Class II instruction l.fl1
+
+config OPENRISC_HAVE_INST_MUL
+        bool "Have instruction l.mul for hardware multiply"
+        default y
+        help
+          Select this if your implementation has a hardware multiply instruction
+
+config OPENRISC_HAVE_INST_DIV
+        bool "Have instruction l.div for hardware divide"
+        default y
+        help
+          Select this if your implementation has a hardware divide instruction
+endmenu
+
+
+source "kernel/time/Kconfig"
+source kernel/Kconfig.hz
+source kernel/Kconfig.preempt
+source "mm/Kconfig"
+
+config OPENRISC_NO_SPR_SR_DSX
+        bool "use SPR_SR_DSX software emulation" if OR1K_1200
+        default y
+        help
+          SPR_SR_DSX bit is status register bit indicating whether
+          the last exception has happened in delay slot.
+
+          OpenRISC architecture makes it optional to have it implemented
+          in hardware and the OR1200 does not have it.
+
+          Say N here if you know that your OpenRISC processor has
+          SPR_SR_DSX bit implemented. Say Y if you are unsure.
+
+config CMDLINE
+        string "Default kernel command string"
+        default ""
+        help
+          On some architectures there is currently no way for the boot loader
+          to pass arguments to the kernel. For these architectures, you should
+          supply some command-line options at build time by entering them
+          here.
+
+menu "Debugging options"
+
+config DEBUG_STACKOVERFLOW
+        bool "Check for kernel stack overflow"
+        default y
+        help
+          Make extra checks for space avaliable on stack in some
+          critical functions. This will cause kernel to run a bit slower,
+          but will catch most of kernel stack overruns and exit gracefuly.
+
+          Say Y if you are unsure.
+
+config JUMP_UPON_UNHANDLED_EXCEPTION
+        bool "Try to die gracefully"
+        default y
+        help
+          Now this puts kernel into infinite loop after first oops. Till
+          your kernel crashes this doesn't have any influence.
+
+          Say Y if you are unsure.
+
+config OPENRISC_EXCEPTION_DEBUG
+        bool "Print processor state at each exception"
+        default n
+        help
+          This option will make your kernel unusable for all but kernel
+          debugging.
+
+          Say N if you are unsure.
+
+config OPENRISC_ESR_EXCEPTION_BUG_CHECK
+        bool "Check for possible ESR exception bug"
+        default n
+        help
+          This option enables some checks that might expose some problems
+          in kernel.
+
+          Say N if you are unsure.
+
+endmenu
+
+endmenu
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+endmenu