Commit cad82448 authored by Paul Mundt's avatar Paul Mundt Committed by Linus Torvalds

[PATCH] sh: Move CPU subtype configuration to its own Kconfig

Currently the CPU subtype options are cluttering up arch/sh/Kconfig somewhat.

Given that, this moves all of that in to its own arch/sh/mm/Kconfig.  Things
like cache configuration are also moved to this new location.

This also adds support for strict CPU tuning on newer cores, which requires
the addition of as-option.
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent aa01666d
......@@ -263,6 +263,13 @@ export quiet Q KBUILD_VERBOSE
# cc support functions to be used (only) in arch/$(ARCH)/Makefile
# See documentation in Documentation/kbuild/makefiles.txt
# as-option
# Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
-xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
else echo "$(2)"; fi ;)
# cc-option
# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
......
This diff is collapsed.
......@@ -17,7 +17,7 @@ config SH_STANDARD_BIOS
config EARLY_SCIF_CONSOLE
bool "Use early SCIF console"
depends on CPU_SH4
depends on CPU_SH4 || CPU_SH2A && !SH_STANDARD_BIOS
config EARLY_PRINTK
bool "Early printk support"
......
......@@ -17,10 +17,30 @@
cflags-y := -mb
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) := -ml
isa-y := any
isa-$(CONFIG_CPU_SH2) := sh2
isa-$(CONFIG_CPU_SH3) := sh3
isa-$(CONFIG_CPU_SH4) := sh4
isa-$(CONFIG_CPU_SH4A) := sh4a
isa-$(CONFIG_CPU_SH2A) := sh2a
isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
ifndef CONFIG_MMU
isa-y := $(isa-y)-nommu
endif
ifndef CONFIG_SH_FPU
isa-y := $(isa-y)-nofpu
endif
cflags-y += $(call as-option,-Wa$(comma)-isa=$(isa-y),)
cflags-$(CONFIG_CPU_SH2) += -m2
cflags-$(CONFIG_CPU_SH3) += -m3
cflags-$(CONFIG_CPU_SH4) += -m4 \
$(call cc-option,-mno-implicit-fp,-m4-nofpu)
cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a-nofpu,)
cflags-$(CONFIG_SH_DSP) += -Wa,-dsp
cflags-$(CONFIG_SH_KGDB) += -g
......@@ -67,9 +87,7 @@ machdir-$(CONFIG_SH_7300_SOLUTION_ENGINE) := se/7300
machdir-$(CONFIG_SH_73180_SOLUTION_ENGINE) := se/73180
machdir-$(CONFIG_SH_STB1_HARP) := harp
machdir-$(CONFIG_SH_STB1_OVERDRIVE) := overdrive
machdir-$(CONFIG_SH_HP620) := hp6xx/hp620
machdir-$(CONFIG_SH_HP680) := hp6xx/hp680
machdir-$(CONFIG_SH_HP690) := hp6xx/hp690
machdir-$(CONFIG_SH_HP6XX) := hp6xx
machdir-$(CONFIG_SH_CQREEK) := cqreek
machdir-$(CONFIG_SH_DMIDA) := dmida
machdir-$(CONFIG_SH_EC3104) := ec3104
......@@ -119,31 +137,39 @@ boot := arch/sh/boot
CPPFLAGS_vmlinux.lds := -traditional
ifneq ($(KBUILD_SRC),)
incdir-prefix := $(srctree)/include/asm-sh/
else
incdir-prefix :=
endif
# Update machine arch and proc symlinks if something which affects
# them changed. We use .arch and .mach to indicate when they were
# updated last, otherwise make uses the target directory mtime.
include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) include/config/MARKER
@echo ' SYMLINK include/asm-sh/cpu -> include/asm-sh/$(cpuincdir-y)'
ifneq ($(KBUILD_SRC),)
$(Q)mkdir -p include/asm-sh
$(Q)ln -fsn $(srctree)/include/asm-sh/$(cpuincdir-y) include/asm-sh/cpu
else
$(Q)ln -fsn $(cpuincdir-y) include/asm-sh/cpu
endif
$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
$(Q)ln -fsn $(incdir-prefix)$(cpuincdir-y) include/asm-sh/cpu
@touch $@
# Most boards have their own mach directories. For the ones that
# don't, just reference the parent directory so the semantics are
# kept roughly the same.
include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/MARKER
@echo ' SYMLINK include/asm-sh/mach -> include/asm-sh/$(incdir-y)'
ifneq ($(KBUILD_SRC),)
$(Q)mkdir -p include/asm-sh
$(Q)ln -fsn $(srctree)/include/asm-sh/$(incdir-y) include/asm-sh/mach
else
$(Q)ln -fsn $(incdir-y) include/asm-sh/mach
endif
@echo -n ' SYMLINK include/asm-sh/mach -> '
$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
$(Q)if [ -d $(incdir-prefix)$(incdir-y) ]; then \
echo -e 'include/asm-sh/$(incdir-y)'; \
ln -fsn $(incdir-prefix)$(incdir-y) \
include/asm-sh/mach; \
else \
echo -e 'include/asm-sh'; \
ln -fsn $(incdir-prefix) include/asm-sh/mach; \
fi
@touch $@
archprepare: maketools include/asm-sh/.cpu include/asm-sh/.mach
.PHONY: maketools FORCE
......
menu "Processor selection"
#
# Processor families
#
config CPU_SH2
bool
select SH_WRITETHROUGH
config CPU_SH3
bool
select CPU_HAS_INTEVT
select CPU_HAS_SR_RB
config CPU_SH4
bool
select CPU_HAS_INTEVT
select CPU_HAS_SR_RB
config CPU_SH4A
bool
select CPU_SH4
select CPU_HAS_INTC2_IRQ
config CPU_SUBTYPE_ST40
bool
select CPU_SH4
select CPU_HAS_INTC2_IRQ
#
# Processor subtypes
#
comment "SH-2 Processor Support"
config CPU_SUBTYPE_SH7604
bool "Support SH7604 processor"
select CPU_SH2
comment "SH-3 Processor Support"
config CPU_SUBTYPE_SH7300
bool "Support SH7300 processor"
select CPU_SH3
config CPU_SUBTYPE_SH7705
bool "Support SH7705 processor"
select CPU_SH3
select CPU_HAS_PINT_IRQ
config CPU_SUBTYPE_SH7707
bool "Support SH7707 processor"
select CPU_SH3
select CPU_HAS_PINT_IRQ
help
Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
config CPU_SUBTYPE_SH7708
bool "Support SH7708 processor"
select CPU_SH3
help
Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
if you have a 100 Mhz SH-3 HD6417708R CPU.
config CPU_SUBTYPE_SH7709
bool "Support SH7709 processor"
select CPU_SH3
select CPU_HAS_PINT_IRQ
help
Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
comment "SH-4 Processor Support"
config CPU_SUBTYPE_SH7750
bool "Support SH7750 processor"
select CPU_SH4
help
Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
config CPU_SUBTYPE_SH7091
bool "Support SH7091 processor"
select CPU_SH4
select CPU_SUBTYPE_SH7750
help
Select SH7091 if you have an SH-4 based Sega device (such as
the Dreamcast, Naomi, and Naomi 2).
config CPU_SUBTYPE_SH7750R
bool "Support SH7750R processor"
select CPU_SH4
select CPU_SUBTYPE_SH7750
config CPU_SUBTYPE_SH7750S
bool "Support SH7750S processor"
select CPU_SH4
select CPU_SUBTYPE_SH7750
config CPU_SUBTYPE_SH7751
bool "Support SH7751 processor"
select CPU_SH4
help
Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
or if you have a HD6417751R CPU.
config CPU_SUBTYPE_SH7751R
bool "Support SH7751R processor"
select CPU_SH4
select CPU_SUBTYPE_SH7751
config CPU_SUBTYPE_SH7760
bool "Support SH7760 processor"
select CPU_SH4
select CPU_HAS_INTC2_IRQ
config CPU_SUBTYPE_SH4_202
bool "Support SH4-202 processor"
select CPU_SH4
comment "ST40 Processor Support"
config CPU_SUBTYPE_ST40STB1
bool "Support ST40STB1/ST40RA processors"
select CPU_SUBTYPE_ST40
help
Select ST40STB1 if you have a ST40RA CPU.
This was previously called the ST40STB1, hence the option name.
config CPU_SUBTYPE_ST40GX1
bool "Support ST40GX1 processor"
select CPU_SUBTYPE_ST40
help
Select ST40GX1 if you have a ST40GX1 CPU.
comment "SH-4A Processor Support"
config CPU_SUBTYPE_SH73180
bool "Support SH73180 processor"
select CPU_SH4A
config CPU_SUBTYPE_SH7770
bool "Support SH7770 processor"
select CPU_SH4A
config CPU_SUBTYPE_SH7780
bool "Support SH7780 processor"
select CPU_SH4A
endmenu
menu "Memory management options"
config MMU
bool "Support for memory management hardware"
depends on !CPU_SH2
default y
help
Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to
boot on these systems, this option must not be set.
On other systems (such as the SH-3 and 4) where an MMU exists,
turning this off will boot the kernel on these machines with the
MMU implicitly switched off.
config 32BIT
bool "Support 32-bit physical addressing through PMB"
depends on CPU_SH4A
default y
help
If you say Y here, physical addressing will be extended to
32-bits through the SH-4A PMB. If this is not set, legacy
29-bit physical addressing will be used.
choice
prompt "HugeTLB page size"
depends on HUGETLB_PAGE && CPU_SH4 && MMU
default HUGETLB_PAGE_SIZE_64K
config HUGETLB_PAGE_SIZE_64K
bool "64K"
config HUGETLB_PAGE_SIZE_1MB
bool "1MB"
endchoice
source "mm/Kconfig"
endmenu
menu "Cache configuration"
config SH7705_CACHE_32KB
bool "Enable 32KB cache size for SH7705"
depends on CPU_SUBTYPE_SH7705
default y
config SH_DIRECT_MAPPED
bool "Use direct-mapped caching"
default n
help
Selecting this option will configure the caches to be direct-mapped,
even if the cache supports a 2 or 4-way mode. This is useful primarily
for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R,
SH4-202, SH4-501, etc.)
Turn this option off for platforms that do not have a direct-mapped
cache, and you have no need to run the caches in such a configuration.
config SH_WRITETHROUGH
bool "Use write-through caching"
default y if CPU_SH2
help
Selecting this option will configure the caches in write-through
mode, as opposed to the default write-back configuration.
Since there's sill some aliasing issues on SH-4, this option will
unfortunately still require the majority of flushing functions to
be implemented to deal with aliasing.
If unsure, say N.
config SH_OCRAM
bool "Operand Cache RAM (OCRAM) support"
help
Selecting this option will automatically tear down the number of
sets in the dcache by half, which in turn exposes a memory range.
The addresses for the OC RAM base will vary according to the
processor version. Consult vendor documentation for specifics.
If unsure, say N.
endmenu
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