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diff --git a/kernel/arch/avr32/mach-at32ap/Kconfig b/kernel/arch/avr32/mach-at32ap/Kconfig
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+if PLATFORM_AT32AP
+
+menu "Atmel AVR32 AP options"
+
+choice
+ prompt "AT32AP700x static memory bus width"
+ depends on CPU_AT32AP700X
+ default AP700X_16_BIT_SMC
+ help
+ Define the width of the AP7000 external static memory interface.
+ This is used to determine how to mangle the address and/or data
+ when doing little-endian port access.
+
+ The current code can only support a single external memory bus
+ width for all chip selects, excluding the flash (which is using
+ raw access and is thus not affected by any of this.)
+
+config AP700X_32_BIT_SMC
+ bool "32 bit"
+
+config AP700X_16_BIT_SMC
+ bool "16 bit"
+
+config AP700X_8_BIT_SMC
+ bool "8 bit"
+
+endchoice
+
+endmenu
+
+endif # PLATFORM_AT32AP