CONFIG_ARCH_AT91 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Atmel AT91
configname: CONFIG_ARCH_AT91
ARM system type
└─>Atmel AT91
In linux kernel since version 2.6.18 (release Date: 2006-09-19)
This enables support for systems based on the Atmel AT91RM9200,
AT91SAM9 and AT91CAP9 processors.
AT91SAM9 and AT91CAP9 processors.
is selected by
CONFIG_SOC_AT91SAM9CONFIG_SOC_AT91RM9200
CONFIG_SOC_AT91SAM9260
CONFIG_SOC_AT91SAM9261
CONFIG_SOC_AT91SAM9263
CONFIG_SOC_AT91SAM9RL
CONFIG_SOC_AT91SAM9G45
CONFIG_SOC_AT91SAM9X5
CONFIG_SOC_AT91SAM9N12
CONFIG_MACH_AT91RM9200_DT
CONFIG_MACH_AT91SAM_DT
CONFIG_CRYPTO_DEV_ATMEL_AES
CONFIG_CRYPTO_DEV_ATMEL_TDES
CONFIG_CRYPTO_DEV_ATMEL_SHA
CONFIG_PINCTRL_AT91
CONFIG_VIDEO_ATMEL_ISI
CONFIG_AT91_ADC