u-boot.git/drivers/timer/tsc_timer.c, branch v2021.01-rc2

x86: Fix up driver names to avoid dtoc warnings

2020-11-05T06:58:45+00:00

At present there are a lot of dtoc warnings reported when building
chromebook_coral, of the form:

   WARNING: the driver intel_apl_lpc was not found in the driver list

Correct these by using driver names that matches their compatible string.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

timer: Return count from timer_ops.get_count

2020-10-22T13:54:53+00:00

No timer drivers return an error from get_count. Instead of possibly
returning an error, just return the count directly.

Signed-off-by: Sean Anderson 
Reviewed-by: Claudiu Beznea 
Reviewed-by: Simon Glass

common: Drop linux/delay.h from common header

2020-05-19T01:19:23+00:00

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass

common: Drop log.h from common header

2020-05-19T01:19:18+00:00

Move this header out of the common header.

Signed-off-by: Simon Glass

common: Drop bootstage.h from common header

2020-05-18T21:33:33+00:00

Move this fairly uncommon header out of the common header.

Signed-off-by: Simon Glass

x86: timer: Reduce timer code size in TPL on Intel CPUs

2019-12-15T03:44:10+00:00

Most of the timer-calibration methods are not needed on recent Intel CPUs
and just increase code size. Add an option to use the known-good way to
get the clock frequency in TPL. Size reduction is about 700 bytes.

Note that version 1 of this commit caused bootstage to crash since the CPU
was not identified. This is corrected by changes previously applied to
make sure that the CPU is identified before spl_init() is called, such as

   39146a2e0b x86: Move CPU init to before spl_init()

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

x86: timer: use a timer base of 0

2019-12-15T03:44:09+00:00

On x86 platforms the timer is reset to 0 when the SoC is reset. Having
this as the timer base is useful since it provides an indication of how
long it takes before U-Boot is running.

When U-Boot sets the timer base to something else, time is lost and we
no-longer have an accurate account of the time since reset. This
particularly affects bootstage.

Change the default to not read the timer base, leaving it at 0. Add an
option for when U-Boot is the secondary bootloader.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

common: Move get_ticks() function out of common.h

2019-12-02T23:23:13+00:00

This function belongs in time.h so move it over and add a comment.

Signed-off-by: Simon Glass 
Reviewed-by: Tom Rini

x86: timer: Use a separate flag for whether timer is inited

2019-11-02T23:20:27+00:00

At present the value of the timer base is used to determine whether the
timer has been set up or not. It is true that the timer is essentially
never exactly 0 when it is read. However 'time 0' may indicate the time
that the machine was reset so it is useful to be able to denote that.

Update the code to use a separate flag instead.

Signed-off-by: Simon Glass 
Tested-by: Aiden Park 
Reviewed-by: Aiden Park 
Reviewed-by: Bin Meng

x86: timer: Set up the timer in timer_early_get_count()

2019-11-02T23:20:27+00:00

This function can be called before the timer is set up. Make sure that the
init function is called so that it works correctly.

This is needed so that bootstage can work correctly in TPL.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng