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arm: move SYS_ARCH_TIMER to KConfig

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SYS_ARCH_TIMER guards the usage of the ARM Generic Timer (aka arch
timer) in U-Boot.
At the moment it is mandatory for ARMv8 and used by a few ARMv7 boards.
Add a proper Kconfig symbol to express this dependency properly,
allowing certain board configuration to later disable arch timer in case
there are any problems with it.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[tuomas: rebase + fix conflicts and resync with moveconfig & use select]
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
This commit is contained in:
Andre Przywara
2018-04-12 04:24:46 +03:00
committed by Tom Rini
parent 1a164ad304
commit 7842b6a91e
10 changed files with 15 additions and 6 deletions
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scripts/config_whitelist.txt
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@@ -2074,7 +2074,6 @@ CONFIG_SYS_APP1_BASE
CONFIG_SYS_APP1_SIZE
CONFIG_SYS_APP2_BASE
CONFIG_SYS_APP2_SIZE
CONFIG_SYS_ARCH_TIMER
CONFIG_SYS_ARM_CACHE_WRITETHROUGH
CONFIG_SYS_AT91_CPU_NAME
CONFIG_SYS_AT91_MAIN_CLOCK