u-boot/arch/mips/cpu/time.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

#include <common.h>
#include <time.h>
#include <asm/mipsregs.h>

unsigned long notrace timer_read_counter(void)
{
	return read_c0_count();
}

#if defined(CONFIG_SYS_MIPS_TIMER_FREQ)
ulong notrace __weak get_tbclk(void)
{
	return CONFIG_SYS_MIPS_TIMER_FREQ;
}
#endif
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 21:58:06 +00:00			`// SPDX-License-Identifier: GPL-2.0+`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00			`/*`
			`* (C) Copyright 2003`
			`* Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
			`*/`

			`#include <common.h>`
common: Move get_tbclk() to time.h This function related to timer and most of the timer functions are in time.h, so move this function there. Signed-off-by: Simon Glass <sjg@chromium.org> 2019-12-28 17:44:59 +00:00			`#include <time.h>`
[MIPS] lib_mips/time.c: Replace CP0 access functions with existing macros We already have many pre-defined CP0 access macros in <asm/mipsregs.h>. This patch replaces mips_{compare,count}_set and mips_count_get with existing macros. Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> 2008-06-05 13:28:59 +00:00			`#include <asm/mipsregs.h>`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00
MIPS: use common code from lib/time.c The common code just needs the C0_COUNT as free running counter, without the need of writing and checking C0_COMPARE. The function get_tbclk() is still implemented here instead of changing all places of CONFIG_SYS_MIPS_TIMER_FREQ to CONFIG_SYS_TIMER_RATE. The change was tested on a MIPS32 system, but as the MIPS64 code was/is the same, this should be no problem. Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> 2015-01-14 18:44:00 +00:00			`unsigned long notrace timer_read_counter(void)`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00			`{`
MIPS: use common code from lib/time.c The common code just needs the C0_COUNT as free running counter, without the need of writing and checking C0_COMPARE. The function get_tbclk() is still implemented here instead of changing all places of CONFIG_SYS_MIPS_TIMER_FREQ to CONFIG_SYS_TIMER_RATE. The change was tested on a MIPS32 system, but as the MIPS64 code was/is the same, this should be no problem. Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> 2015-01-14 18:44:00 +00:00			`return read_c0_count();`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00			`}`

mips: time: Only compile the weak get_tbclk() when needed This patch opts-out the compilation of get_tbclk() if CONFIG_SYS_MIPS_TIMER_FREQ is not defined. This is used on the Octeon platform, where the weak get_tbclk() function is overwritten by its platform specific one. Signed-off-by: Stefan Roese <sr@denx.de> 2020-05-14 09:59:05 +00:00			`#if defined(CONFIG_SYS_MIPS_TIMER_FREQ)`
MIPS: allow override of get_tbclk() Allow SoC or board layers with reconfigurable cpu clocks capabilties to do implementation specific lookups and service get_tbclk() requests. Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com> 2019-12-23 20:53:56 +00:00			`ulong notrace __weak get_tbclk(void)`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00			`{`
MIPS: use common code from lib/time.c The common code just needs the C0_COUNT as free running counter, without the need of writing and checking C0_COMPARE. The function get_tbclk() is still implemented here instead of changing all places of CONFIG_SYS_MIPS_TIMER_FREQ to CONFIG_SYS_TIMER_RATE. The change was tested on a MIPS32 system, but as the MIPS64 code was/is the same, this should be no problem. Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> 2015-01-14 18:44:00 +00:00			`return CONFIG_SYS_MIPS_TIMER_FREQ;`
* Add support for MIPS32 4Kc CPUs * Add support for INCA-IP Board 2003-03-27 12:09:35 +00:00			`}`
mips: time: Only compile the weak get_tbclk() when needed This patch opts-out the compilation of get_tbclk() if CONFIG_SYS_MIPS_TIMER_FREQ is not defined. This is used on the Octeon platform, where the weak get_tbclk() function is overwritten by its platform specific one. Signed-off-by: Stefan Roese <sr@denx.de> 2020-05-14 09:59:05 +00:00			`#endif`