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author | Aaron Durbin <adurbin@chromium.org> | 2014-09-25 10:05:15 -0500 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-08 18:35:01 +0200 |
commit | e5e36306a9a5bf96ab8cc990d93bbd62030e635f (patch) | |
tree | 9ecc2fb162f97fa1e918f0830f2a49b183340280 /src/soc/samsung/exynos5420/timer.c | |
parent | 23b4e4c4e80c0acd17c088c6bdde8c3bfccce898 (diff) | |
download | coreboot-e5e36306a9a5bf96ab8cc990d93bbd62030e635f.tar.gz coreboot-e5e36306a9a5bf96ab8cc990d93bbd62030e635f.tar.bz2 coreboot-e5e36306a9a5bf96ab8cc990d93bbd62030e635f.zip |
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/soc/samsung/exynos5420/timer.c')
-rw-r--r-- | src/soc/samsung/exynos5420/timer.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/src/soc/samsung/exynos5420/timer.c b/src/soc/samsung/exynos5420/timer.c deleted file mode 100644 index 7156a010affd..000000000000 --- a/src/soc/samsung/exynos5420/timer.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2009 Samsung Electronics - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <console/console.h> -#include <delay.h> -#include <soc/clk.h> -#include <thread.h> -#include <timer.h> - -void init_timer(void) -{ - /* Nothing to do because we manually - * call mct_start() in the bootblock - */ -} - -/* delay x useconds */ -void udelay(unsigned usec) -{ - struct mono_time current, end; - - if (!thread_yield_microseconds(usec)) - return; - - timer_monotonic_get(¤t); - end = current; - mono_time_add_usecs(&end, usec); - - if (mono_time_after(¤t, &end)) { - printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n", - usec); - /* There's not much we can do if usec is too big. Use a long, - * paranoid delay value and hope for the best... */ - end = current; - mono_time_add_usecs(&end, USECS_PER_SEC); - } - - while (mono_time_before(¤t, &end)) - timer_monotonic_get(¤t); -} |