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coreboot-kgpe-d16/src/lib/timer.c

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src/lib: Use SPDX for GPL-2.0-only files Done with sed and God Lines. Only done for C-like code for now. Change-Id: Id3a0b63272ebda3dad13803700bcff36d36f4815 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40054 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-04-02 23:48:34 +02:00
/* SPDX-License-Identifier: GPL-2.0-only */
tegra132: Add support for tegra132 soc Add basic support for tegra132 soc. BUG=None BRANCH=None TEST=Compiles successfully for rush board using tegra132 soc Original-Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/197398 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit 4746bff6e9f4b20abc44d0b6fce9691aea63583c) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Reviewed-on: http://review.coreboot.org/8040 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-04-29 01:43:07 +02:00
#include <timer.h>
#include <delay.h>
#include <thread.h>
compiler.h: add __weak macro Instead of writing out '__attribute__((weak))' use a shorter form. Change-Id: If418a1d55052780077febd2d8f2089021f414b91 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/25767 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Justin TerAvest <teravest@chromium.org>
2018-04-21 22:45:32 +02:00
__weak void init_timer(void) { /* do nothing */ }
timer: Reestablish init_timer(), consolidate timer initialization calls We have known for a while that the old x86 model of calling init_timer() in ramstage doesn't make sense on other archs (and is questionable in general), and finally removed it with CL:219719. However, now timer initialization is completely buried in the platform code, and it's hard to ensure it is done in time to set up timestamps. For three out of four non-x86 SoC vendors we have brought up for now, the timers need some kind of SoC-specific initialization. This patch reintroduces init_timer() as a weak function that can be overridden by platform code. The call in ramstage is restricted to x86 (and should probably eventually be removed from there as well), and other archs should call them at the earliest reasonable point in their bootblock. (Only changing arm for now since arm64 and mips bootblocks are still in very early state and should sync up to features in arm once their requirements are better understood.) This allows us to move timestamp_init() into arch code, so that we can rely on timestamps being available at a well-defined point and initialize our base value as early as possible. (Platforms who know that their timers start at zero can still safely call timestamp_init(0) again from platform code.) BRANCH=None BUG=None TEST=Booted Pinky, Blaze and Storm, compiled Daisy and Pit. Change-Id: I1b064ba3831c0c5b7965b1d88a6f4a590789c891 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: ffaebcd3785c4ce998ac1536e9fdd46ce3f52bfa Original-Change-Id: Iece1614b7442d4fa9ca981010e1c8497bdea308d Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/234062 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9606 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-12-08 22:39:14 +01:00
src/lib: Add "int" following "unsigned" Fix the following warning detected by checkpatch.pl: WARNING: Prefer 'unsigned int' to bare use of 'unsigned' The remaining 37 warnings in gcov-io.c and libgcov.c are all false positives generated by checkpatch detecting a symbol or function name ending in _unsigned. TEST=Build and run on Galileo Gen2 Change-Id: I9f1b71993caca8b3eb3f643525534a937d365ab3 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18695 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2017-03-09 01:34:12 +01:00
void udelay(unsigned int usec)
tegra132: Add support for tegra132 soc Add basic support for tegra132 soc. BUG=None BRANCH=None TEST=Compiles successfully for rush board using tegra132 soc Original-Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/197398 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit 4746bff6e9f4b20abc44d0b6fce9691aea63583c) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Reviewed-on: http://review.coreboot.org/8040 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-04-29 01:43:07 +02:00
{
tegra132: convert to stopwatch API Simplify the timed operations by using the stopwatch API. BUG=None BRANCH=None TEST=Built and booted to kernel. Analyzed logs. Output as expected. Change-Id: Ia49bccccc412f23bb620ed386b9174468a434116 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: a877020c6d8ba12422c9c2c487122b7eb4a1967b Original-Change-Id: Iffc32fcb9b8bfdcfbef67f563ac3014912f82e7f Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/219494 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8831 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-09-23 23:33:21 +02:00
struct stopwatch sw;
tegra132: fill out udelay() implementation There was an empty udelay() implementation result in 0 waits. Provide an actual implementation. BUG=None BRANCH=None TEST=Built and ran through to depthcharge on rush. Change-Id: Ia7060566a71c36bb7e4543c2fe4ee49d168518c7 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: c8832e73de238358ea801ccd7c2330de35a7b40e Original-Change-Id: I201f2fdc4e4f5c88d48e4002839b03e808a5a1bc Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/210827 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8830 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-04 23:21:50 +02:00
/*
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>
2014-09-25 17:05:15 +02:00
* As the timer granularity is in microseconds pad the
tegra132: fill out udelay() implementation There was an empty udelay() implementation result in 0 waits. Provide an actual implementation. BUG=None BRANCH=None TEST=Built and ran through to depthcharge on rush. Change-Id: Ia7060566a71c36bb7e4543c2fe4ee49d168518c7 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: c8832e73de238358ea801ccd7c2330de35a7b40e Original-Change-Id: I201f2fdc4e4f5c88d48e4002839b03e808a5a1bc Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/210827 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8830 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-04 23:21:50 +02:00
* requested delay by one to get at least >= requested usec delay.
*/
tegra132: convert to stopwatch API Simplify the timed operations by using the stopwatch API. BUG=None BRANCH=None TEST=Built and booted to kernel. Analyzed logs. Output as expected. Change-Id: Ia49bccccc412f23bb620ed386b9174468a434116 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: a877020c6d8ba12422c9c2c487122b7eb4a1967b Original-Change-Id: Iffc32fcb9b8bfdcfbef67f563ac3014912f82e7f Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/219494 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8831 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-09-23 23:33:21 +02:00
usec += 1;
if (!thread_yield_microseconds(usec))
return;
stopwatch_init_usecs_expire(&sw, usec);
Use stopwatch_wait_until_expired where applicable Change-Id: I4d6c6810b91294a7e401a4a1a446218c04c98e55 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/21590 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2017-09-19 15:19:54 +02:00
stopwatch_wait_until_expired(&sw);
tegra132: Add support for tegra132 soc Add basic support for tegra132 soc. BUG=None BRANCH=None TEST=Compiles successfully for rush board using tegra132 soc Original-Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/197398 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit 4746bff6e9f4b20abc44d0b6fce9691aea63583c) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: If2a3de80026e7729ac6da8484ff6c56607c52a63 Reviewed-on: http://review.coreboot.org/8040 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-04-29 01:43:07 +02:00
}
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