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ARM: add multi_v7_lpae_defconfig 

The only missing configuration option preventing us from using
multi_v7_defconfig with the Raspberry Pi 4 is ARM_LPAE. It's needed as
the PCIe controller found on the SoC depends on 64bit addressing, yet
can't be included as not all v7 boards support LPAE.

Introduce multi_v7_lpae_defconfig, built off multi_v7_defconfig, which will
avoid us having to duplicate and maintain multiple similar configurations.

Needless to say the Raspberry Pi 4 is not the only platform that can
benefit from this new configuration.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20230124110213.3221264-11-alexander.stein@ew.tq-group.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Nicolas Saenz Julienne 2023-01-24 12:02:13 +01:00 committed by Arnd Bergmann
parent a400c287ce
commit e9faf9b0b0
2 changed files with 8 additions and 0 deletions
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6
arch/arm/Makefile
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@ -319,6 +319,10 @@ endif
# My testing targets (bypasses dependencies) # My testing targets (bypasses dependencies)
bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage
include $(srctree)/scripts/Makefile.defconf
PHONY += multi_v7_lpae_defconfig
multi_v7_lpae_defconfig:
$(call merge_into_defconfig,multi_v7_defconfig,lpae)
define archhelp define archhelp
echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
@ -334,4 +338,6 @@ define archhelp
echo ' (distribution) /sbin/$(INSTALLKERNEL) or' echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
echo ' install to $$(INSTALL_PATH) and run lilo' echo ' install to $$(INSTALL_PATH) and run lilo'
echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
echo
echo ' multi_v7_lpae_defconfig - multi_v7_defconfig with CONFIG_ARM_LPAE enabled'
endef endef

2
arch/arm/configs/lpae.config Normal file
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@ -0,0 +1,2 @@
CONFIG_ARM_LPAE=y
CONFIG_VMSPLIT_2G=y