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x86: add thread support

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Thread support is added for the x86 architecture. Both
the local apic and the tsc udelay() functions have a
call to thread_yield_microseconds() so as to provide an
opportunity to run pending threads.

Change-Id: Ie39b9eb565eb189676c06645bdf2a8720fe0636a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/3207
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Aaron Durbin
2013-05-06 12:22:23 -05:00
committed by Ronald G. Minnich
parent 4409a5eef6
commit 38c326d041
9 changed files with 140 additions and 1 deletions
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src/Kconfig
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@@ -326,7 +326,7 @@ config TIMER_QUEUE
config COOP_MULTITASKING
def_bool n
depends on TIMER_QUEUE
depends on TIMER_QUEUE && ARCH_X86
help
Cooperative multitasking allows callbacks to be multiplexed on the
main thread of ramstage. With this enabled it allows for multiple