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| author | Marek Vasut <marex@denx.de> | 2015-05-04 22:54:37 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-05-28 08:18:23 -0400 |
| commit | e390bd5ed06fcd29743a3728e9facc4891d094fa (patch) | |
| tree | f5c403fd8b09272c07bf9400c77c75cc658f7077 | |
| parent | 25a63f5b900715b5cc8b69fcf9b6f23b90daa658 (diff) | |
| download | u-boot-e390bd5ed06fcd29743a3728e9facc4891d094fa.zip u-boot-e390bd5ed06fcd29743a3728e9facc4891d094fa.tar.gz u-boot-e390bd5ed06fcd29743a3728e9facc4891d094fa.tar.bz2 | |
ARM: bcm283x: Switch to generic timer
Switch to generic timer implementation from lib/time.c .
This also fixes a signed overflow which was in __udelay()
implementation.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Tyler Baker <tyler.baker@linaro.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
| -rw-r--r-- | arch/arm/mach-bcm283x/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-bcm283x/timer.c | 58 | ||||
| -rw-r--r-- | include/configs/rpi-common.h | 6 |
3 files changed, 7 insertions, 59 deletions
diff --git a/arch/arm/mach-bcm283x/Makefile b/arch/arm/mach-bcm283x/Makefile index ac27d00..f0dadd0 100644 --- a/arch/arm/mach-bcm283x/Makefile +++ b/arch/arm/mach-bcm283x/Makefile @@ -5,4 +5,4 @@ # obj-$(CONFIG_TARGET_RPI) += lowlevel_init.o -obj-y += init.o reset.o timer.o mbox.o phys2bus.o +obj-y += init.o reset.o mbox.o phys2bus.o diff --git a/arch/arm/mach-bcm283x/timer.c b/arch/arm/mach-bcm283x/timer.c deleted file mode 100644 index 017907c..0000000 --- a/arch/arm/mach-bcm283x/timer.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - * (C) Copyright 2012 Stephen Warren - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/timer.h> - -ulong get_timer_us(ulong base) -{ - struct bcm2835_timer_regs *regs = - (struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR; - - return readl(®s->clo) - base; -} - -ulong get_timer(ulong base) -{ - ulong us = get_timer_us(0); - us /= (1000000 / CONFIG_SYS_HZ); - us -= base; - return us; -} - -unsigned long long get_ticks(void) -{ - return get_timer(0); -} - -ulong get_tbclk(void) -{ - return CONFIG_SYS_HZ; -} - -void __udelay(unsigned long usec) -{ - ulong endtime; - signed long diff; - - endtime = get_timer_us(0) + usec; - - do { - ulong now = get_timer_us(0); - diff = endtime - now; - } while (diff >= 0); -} diff --git a/include/configs/rpi-common.h b/include/configs/rpi-common.h index 3121ac9..b54cf8b 100644 --- a/include/configs/rpi-common.h +++ b/include/configs/rpi-common.h @@ -8,12 +8,18 @@ #define _RPI_COMMON_H_ #include <linux/sizes.h> +#include <asm/arch/timer.h> /* Architecture, CPU, etc.*/ #define CONFIG_SYS_GENERIC_BOARD #define CONFIG_BCM2835 #define CONFIG_ARCH_CPU_INIT #define CONFIG_SYS_DCACHE_OFF + +#define CONFIG_SYS_TIMER_RATE 1000000 +#define CONFIG_SYS_TIMER_COUNTER \ + (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo) + /* * 2835 is a SKU in a series for which the 2708 is the first or primary SoC, * so 2708 has historically been used rather than a dedicated 2835 ID. |