linux/arch/arm/mach-ux500/Kconfig
Arnd Bergmann 2f618d5ef5 ARM: remove support for NOMMU ARMv4/v5
It is possible to build MMU-less kernels for Cortex-M base
microcrontrollers as well as a couple of older platforms that
have not been converted to CONFIG_ARCH_MULTIPLATFORM,
specifically ep93xx, footbridge, dove, sa1100 and s3c24xx.

It seems unlikely that anybody has tested those configurations
in recent years, as even building them is frequently broken.
A patch I submitted caused another build time regression
in this configuration. I sent a patch for that, but it seems
better to also remove the option entirely, leaving ARMv7-M
as the only supported Arm NOMMU target for simplicity.

A couple of platforms have dependencies on CONFIG_MMU, those
can all be removed now. Notably, mach-integrator tries to
support MMU-less CPU cores, but those have not actually been
selectable for a long time.

This addresses several build failures in randconfig builds that
have accumulated over the years.

Cc: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-03-17 09:13:13 +01:00

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# SPDX-License-Identifier: GPL-2.0
menuconfig ARCH_U8500
bool "ST-Ericsson U8500 Series"
depends on ARCH_MULTI_V7
select AB8500_CORE
select ABX500_CORE
select ARM_AMBA
select ARM_ERRATA_754322
select ARM_ERRATA_764369 if SMP
select ARM_GIC
select CACHE_L2X0
select CLKSRC_DBX500_PRCMU
select CLKSRC_NOMADIK_MTU
select GPIOLIB
select HAVE_ARM_SCU if SMP
select HAVE_ARM_TWD if SMP
select I2C
select I2C_NOMADIK
select MFD_DB8500_PRCMU
select PINCTRL
select PINCTRL_AB8500
select PINCTRL_AB8505
select PINCTRL_ABX500
select PINCTRL_DB8500
select PINCTRL_NOMADIK
select PL310_ERRATA_753970 if CACHE_L2X0
select PM_GENERIC_DOMAINS if PM
select REGULATOR
select REGULATOR_DB8500_PRCMU
select REGULATOR_FIXED_VOLTAGE
select SOC_BUS
select RESET_CONTROLLER
help
Support for ST-Ericsson's Ux500 architecture
if ARCH_U8500
config UX500_SOC_DB8500
def_bool y
config UX500_DEBUG_UART
int "Ux500 UART to use for low-level debug"
default 2
help
Choose the UART on which kernel low-level debug messages should be
output.
endif