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-rw-r--r--arch/Config.in.arc38
-rw-r--r--package/uclibc/uclibc.mk8
2 files changed, 46 insertions, 0 deletions
diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index b48a90ff07..7e0ad08425 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -40,3 +40,41 @@ config BR2_GCC_TARGET_CPU
default "arc700" if BR2_arc750d
default "arc700" if BR2_arc770d
default "archs" if BR2_archs38
+
+choice
+ prompt "MMU Page Size"
+ default BR2_ARC_PAGE_SIZE_8K
+ help
+ MMU starting from version 3 (found in ARC 770) and now
+ version 4 (found in ARC HS38) allows the selection of the
+ page size during ASIC design creation.
+
+ The following options are available for MMU v3 and v4: 4kB,
+ 8kB and 16 kB.
+
+ The default is 8 kB (that really matches the only page size
+ in MMU v2). It is important to build a toolchain with page
+ size matching the hardware configuration. Otherwise
+ user-space applications will fail at runtime.
+
+config BR2_ARC_PAGE_SIZE_4K
+ bool "4KB"
+ depends on BR2_arc770d || BR2_archs38
+
+config BR2_ARC_PAGE_SIZE_8K
+ bool "8KB"
+ help
+ This is the one and only option available for MMUv2 and
+ default value for MMU v3 and v4.
+
+config BR2_ARC_PAGE_SIZE_16K
+ bool "16KB"
+ depends on BR2_arc770d || BR2_archs38
+
+endchoice
+
+config BR2_ARC_PAGE_SIZE
+ string
+ default "4K" if BR2_ARC_PAGE_SIZE_4K
+ default "8K" if BR2_ARC_PAGE_SIZE_8K
+ default "16K" if BR2_ARC_PAGE_SIZE_16K
diff --git a/package/uclibc/uclibc.mk b/package/uclibc/uclibc.mk
index 9dfafad457..a2ba23017b 100644
--- a/package/uclibc/uclibc.mk
+++ b/package/uclibc/uclibc.mk
@@ -70,6 +70,13 @@ UCLIBC_ARC_TYPE = CONFIG_$(call qstrip,$(BR2_UCLIBC_ARC_TYPE))
define UCLIBC_ARC_TYPE_CONFIG
$(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARC_TYPE),$(@D)/.config)
endef
+
+UCLIBC_ARC_PAGE_SIZE = CONFIG_ARC_PAGE_SIZE_$(call qstrip,$(BR2_ARC_PAGE_SIZE))
+define UCLIBC_ARC_PAGE_SIZE_CONFIG
+ $(SED) '/CONFIG_ARC_PAGE_SIZE_*/d' $(@D)/.config
+ $(call KCONFIG_ENABLE_OPT,$(UCLIBC_ARC_PAGE_SIZE),$(@D)/.config)
+endef
+
endif # arc
#
@@ -367,6 +374,7 @@ define UCLIBC_KCONFIG_FIXUP_CMDS
$(call KCONFIG_SET_OPT,SHARED_LIB_LOADER_PREFIX,"/lib",$(@D)/.config)
$(UCLIBC_MMU_CONFIG)
$(UCLIBC_ARC_TYPE_CONFIG)
+ $(UCLIBC_ARC_PAGE_SIZE_CONFIG)
$(UCLIBC_ARM_ABI_CONFIG)
$(UCLIBC_ARM_BX_CONFIG)
$(UCLIBC_MIPS_ABI_CONFIG)
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