u-boot.git/lib/time.c, branch v2015.04

Use uint64_t for time types

2014-10-27T15:04:01+00:00

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

kconfig: move CONFIG_SYS_HZ to lib/Kconfig

2014-10-23T17:18:59+00:00

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 
Reviewed-by: Marek Vasut

lib/time.c cleanups

2014-07-22T11:44:26+00:00

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

lib: time: add weak timer_init() function

2014-01-24T21:59:06+00:00

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 
Reviewed-by: Tim Kryger

time: fix usec_to_tick()

2013-12-13T14:15:33+00:00

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 
Acked-by: Rob Herring

time: fix gcc warnings on MIPS64

2013-11-11T14:46:41+00:00

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

time: add weak annotation to timer_read_counter declaration

2013-11-08T20:25:14+00:00

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

Introduce common timer functions

2013-11-04T16:06:16+00:00

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

config: consolidate CONFIG_SYS_HZ definition

2013-11-04T16:05:58+00:00

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

Add GPL-2.0+ SPDX-License-Identifier to source files

2013-07-24T13:44:38+00:00

Signed-off-by: Wolfgang Denk 
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini