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authorAaron Durbin <adurbin@chromium.org>2014-09-25 10:05:15 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-04-08 18:35:01 +0200
commite5e36306a9a5bf96ab8cc990d93bbd62030e635f (patch)
tree9ecc2fb162f97fa1e918f0830f2a49b183340280 /src/include
parent23b4e4c4e80c0acd17c088c6bdde8c3bfccce898 (diff)
timer: Add generic udelay() implementation
Add GENERIC_UDELAY Kconfig option so that a generic udelay() implementation is provided utilizing the monotonic timer. That way each board/chipset doesn't need to duplicate the same udelay(). Additionally, assume that GENERIC_UDELAY implies init_timer() is not required. BUG=None BRANCH=None TEST=Built nyan, ryu, and rambi. May need help testing. Change-Id: I7f511a2324b5aa5d1b2959f4519be85a6a7360e8 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 1a85fbcad778933d13eaef545135abe7e4de46ed Original-Change-Id: Idd26de19eefc91ee3b0ceddfb1bc2152e19fd8ab Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/219719 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9334 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/delay.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/delay.h b/src/include/delay.h
index b3d8ed95da..ab1f4f9829 100644
--- a/src/include/delay.h
+++ b/src/include/delay.h
@@ -1,7 +1,11 @@
#ifndef DELAY_H
#define DELAY_H
+#if IS_ENABLED(CONFIG_GENERIC_UDELAY)
+static inline void init_timer(void) {}
+#else
void init_timer(void);
+#endif
void udelay(unsigned usecs);
void mdelay(unsigned msecs);