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* delay: collect {m, n, u}delay declarations to include/linux/delay.hMasahiro Yamada2017-01-14-6/+0
| | | | | | | | | | | | | Currently, mdelay() and udelay() are declared in include/common.h, while ndelay() in include/linux/compat.h. It would be nice to collect them into include/linux/delay.h like Linux. While we are here, fix the ndelay() implementation; I used the DIV_ROUND_UP() instead of (x)/1000 because it must wait *longer* than the given period of time. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* timer: Provide an early timerSimon Glass2016-02-26-7/+21
| | | | | | | | | | In some cases the timer must be accessible before driver model is active. Examples include when using CONFIG_TRACE to trace U-Boot's execution before driver model is set up. Enable this option to use an early timer. These functions must be supported by your timer driver: timer_early_get_count() and timer_early_get_rate(). Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: timer: uclass: add timer init in uclass driver to add timer deviceMugunthan V N2016-01-20-17/+0
| | | | | | | | | | Adding timer init function in timer-uclass driver to create and initialize the timer device on platforms where u-boot,dm-pre-reloc is not used. Since there will be multiple timer devices in the system, adding a tick-timer node in chosen node to know which timer device to be used as tick timer in u-boot. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
* dm: timer: Support 64-bit counterBin Meng2015-12-01-3/+6
| | | | | | | | | | | | There are timers with a 64-bit counter value but current timer uclass driver assumes a 32-bit one. Modify timer_get_count() to ask timer driver to always return a 64-bit counter value, and provide an inline helper function timer_conv_64() to handle the 32-bit/64-bit conversion automatically. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: implement a Timer uclassThomas Chou2015-10-23-0/+49
| | | | | | | Implement a Timer uclass to work with lib/time.c. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Simon Glass <sjg@chromium.org>
* Use uint64_t for time typesSimon Glass2014-10-27-6/+6
| | | | | | | | Unfortunately 'unsigned long long' and 'uint64_t' are not necessarily compatible on 64-bit machines. Use the correct typedef instead of writing the supposed type out in full. Signed-off-by: Simon Glass <sjg@chromium.org>
* kconfig: move CONFIG_SYS_HZ to lib/KconfigMasahiro Yamada2014-10-23-4/+0
| | | | | | | | | | | | CONFIG_SYS_HZ is always defined as 1000 in config_fallbacks.h (but some boards still have redundant definitions). This commit moves the definition and the document in README to Kconfig. Since lib/Kconfig can assure that CONFIG_SYS_HZ is 1000, the sanity check in lib/time.c should be removed. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Marek Vasut <marex@denx.de>
* lib/time.c cleanupsPavel Machek2014-07-22-8/+10
| | | | | | | | | | As I initially suspected overflow in time handling, I took a detailed look at lib/time.c. This adds comments about units being used, reduces amount of type casting being done, and makes __udelay() always wait at least one tick. (Current code could do no delaying at all for short delays). Signed-off-by: Pavel Machek <pavel@denx.de>
* lib: time: add weak timer_init() functionDarwin Rambo2014-01-24-0/+5
| | | | | | | | | | If timer_init() is made a weak stub function, then it allows us to remove several empty timer_init functions for those boards that already have a timer initialized when u-boot starts. Architectures that use the timer framework may also remove the need for timer.c. Signed-off-by: Darwin Rambo <drambo@broadcom.com> Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
* time: fix usec_to_tick()Stephen Warren2013-12-13-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8dfafdde88eb ("Introduce common timer functions") created a common definition of usec_to_tick() which had a couple problems: static unsigned long long usec_to_tick(unsigned long usec) { uint64_t tick = usec * get_tbclk(); That likely overflows. usec *= get_tbclk(); That was an attempt to fix it by performing the multiply after the promotion of usec to 64-bit, but was applied to the wrong variable, which was never used. This patch fixes these issues. A user-visible symptom of the problem was the e.g. "dhcp zImage" using an ASIX USB Ethernet dongle would print: Waiting for Ethernet connection... unable to connect. ... with no delay before "unable to connect". There are likely other symptoms. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <rob.herring@calxeda.com>
* time: fix gcc warnings on MIPS64Daniel Schwierzeck2013-11-11-2/+2
| | | | | | | | | | | | | | | | | | Commit 8dfafdde88eb3e71d5569846396ae67a91017232 introduced new gcc warnings on MIPS64: time.c: In function 'tick_to_time': time.c:59:2: warning: comparison of distinct pointer types lacks a cast [enabled by default] time.c:59:2: warning: passing argument 1 of '__div64_32' from incompatible pointer type [enabled by default] In file included from time.c:10:0: ./u-boot-mips/include/div64.h:22:17: note: expected 'uint64_t *' but argument is of type 'long long unsigned int *' time.c: In function 'usec_to_tick': time.c:76:2: warning: comparison of distinct pointer types lacks a cast [enabled by default] time.c:76:2: warning: passing argument 1 of '__div64_32' from incompatible pointer type [enabled by default] In file included from time.c:10:0: ./u-boot-mips/include/div64.h:22:17: note: expected 'uint64_t *' but argument is of type 'long long unsigned int *' Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
* time: add weak annotation to timer_read_counter declarationRob Herring2013-11-08-1/+1
| | | | | | | A weak annotation is needed in order to prevent link errors when get_ticks is overridden. This fixes sandbox build. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
* Introduce common timer functionsRob Herring2013-11-04-0/+73
| | | | | | | | | | | | | | | Many platforms duplicate pretty much the same timer code yet they all have a 32-bit freerunning counter register. Create a common implementation that minimally requires 2 or 3 defines to add timer support: CONFIG_SYS_TIMER_RATE - Clock rate of the timer counter CONFIG_SYS_TIMER_COUNTER - Address of 32-bit counter CONFIG_SYS_TIMER_COUNTS_DOWN - Define if counter counts down All functions are weak or ifdef'ed so they can still be overriden by any platform. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
* config: consolidate CONFIG_SYS_HZ definitionRob Herring2013-11-04-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | According to the README, CONFIG_SYS_HZ must be 1000 and most platforms follow that. In preparation to remove CONFIG_SYS_HZ from all these platforms, provide a common definition. The platforms which use a value other than 1000 will get build warning now. These configs are: include/configs/M5271EVB.h:#define CONFIG_SYS_HZ 1000000 include/configs/balloon3.h:#define CONFIG_SYS_HZ 3250000 /* Timer @ 3250000 Hz */ include/configs/idmr.h:#define CONFIG_SYS_HZ (50000000 / 64) include/configs/mini2440.h:#define CONFIG_SYS_HZ 1562500 include/configs/mx1ads.h:#define CONFIG_SYS_HZ 3686400 include/configs/omap3_zoom2.h:#define CONFIG_SYS_HZ ((V_SCLK) / (2 << CONFIG_SYS_PTV)) include/configs/omap730p2.h:#define CONFIG_SYS_HZ ((CONFIG_SYS_CLK_FREQ)/(2 << CONFIG_SYS_PTV)) include/configs/palmld.h:#define CONFIG_SYS_HZ 3250000 /* Timer @ 3250000 Hz */ include/configs/palmtc.h:#define CONFIG_SYS_HZ 3686400 /* Timer @ 3686400 Hz */ include/configs/rsk7203.h:#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / CMT_CLK_DIVIDER) include/configs/rsk7264.h:#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / CMT_CLK_DIVIDER) include/configs/rsk7269.h:#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / CMT_CLK_DIVIDER) include/configs/scb9328.h:#define CONFIG_SYS_HZ 3686400 /* incrementer freq: 3.6864 MHz */ include/configs/versatile.h:#define CONFIG_SYS_HZ (1000000 / 256) include/configs/zipitz2.h:#define CONFIG_SYS_HZ 3250000 /* Timer @ 3250000 Hz */ Signed-off-by: Rob Herring <rob.herring@calxeda.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* Move bootstage timer out of lib/time.cSimon Glass2012-04-10-17/+0
| | | | | | | | | | | | The standalone example does not have get_timer() defined, so we cannot rely on it being available. Move the timer function into boootstage.c to avoid this problem. This corrects a build breakage for the standalone example on some boards. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu>
* bootstage: Define an optional microsecond timerSimon Glass2012-03-18-0/+17
| | | | | | | | | | | | Define timer_get_boot_us() which returns the number of microseconds since boot. If undefined then we use get_timer() * 1000. We can fit this in a 32-bit register which keeps everyone happy on the efficiency side. It will wrap around after about an hour. If we are still looking at it after an hour then we had better not be timing the boot. Signed-off-by: Simon Glass <sjg@chromium.org>
* consolidate mdelay by providing a common function for all usersAnatolij Gustschin2011-10-22-0/+6
| | | | | | | | | There are several mdelay() definitions in the driver and board code. Remove them all and provide a common mdelay() in lib/time.c. Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
* Rename lib_generic/ to lib/Peter Tyser2010-04-13-0/+43
Now that the other architecture-specific lib directories have been moved out of the top-level directory there's not much reason to have the '_generic' suffix on the common lib directory. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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