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ARM: vexpress: convert to common timer code

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Convert vexpress to use the commmon timer code.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring 2013-10-04 10:22:45 -05:00 committed by Tom Rini
parent 3dae5b510e
commit b3a7f22b3e
2 changed files with 4 additions and 71 deletions
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71
board/armltd/vexpress/vexpress_common.c
View file

@ -26,9 +26,6 @@
#include <asm/arch/wdt.h>
#include "../drivers/mmc/arm_pl180_mmci.h"
static ulong timestamp;
static ulong lastdec;
static struct systimer *systimer_base = (struct systimer *)V2M_TIMER01;
static struct sysctrl *sysctrl_base = (struct sysctrl *)SCTL_BASE;
@ -152,8 +149,6 @@ static void vexpress_timer_init(void)
writel(SYSTIMER_EN | SYSTIMER_32BIT |
readl(&systimer_base->timer0control),
&systimer_base->timer0control);
reset_timer_masked();
}
int v2m_cfg_write(u32 devfn, u32 data)
@ -183,62 +178,6 @@ void reset_cpu(ulong addr)
printf("Unable to reboot\n");
}
/*
* Delay x useconds AND perserve advance timstamp value
* assumes timer is ticking at 1 msec
*/
void __udelay(ulong usec)
{
ulong tmo, tmp;
tmo = usec / 1000;
tmp = get_timer(0); /* get current timestamp */
/*
* If setting this forward will roll time stamp then
* reset "advancing" timestamp to 0 and set lastdec value
* otherwise set the advancing stamp to the wake up time
*/
if ((tmo + tmp + 1) < tmp)
reset_timer_masked();
else
tmo += tmp;
while (get_timer_masked() < tmo)
; /* loop till wakeup event */
}
ulong get_timer(ulong base)
{
return get_timer_masked() - base;
}
void reset_timer_masked(void)
{
lastdec = readl(&systimer_base->timer0value) / 1000;
timestamp = 0;
}
ulong get_timer_masked(void)
{
ulong now = readl(&systimer_base->timer0value) / 1000;
if (lastdec >= now) { /* normal mode (non roll) */
timestamp += lastdec - now;
} else { /* count down timer overflowed */
/*
* nts = ts + ld - now
* ts = old stamp, ld = time before passing through - 1
* now = amount of time after passing though - 1
* nts = new "advancing time stamp"
*/
timestamp += lastdec + SYSTIMER_RELOAD - now;
}
lastdec = now;
return timestamp;
}
void lowlevel_init(void)
{
}
@ -247,16 +186,6 @@ ulong get_board_rev(void){
return readl((u32 *)SYS_ID);
}
unsigned long long get_ticks(void)
{
return get_timer(0);
}
ulong get_tbclk(void)
{
return (ulong)CONFIG_SYS_HZ;
}
#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT)
/* Setting the address at which secondary cores start from.
* Versatile Express uses one address for all cores, so ignore corenr

4
include/configs/vexpress_common.h
View file

@ -131,6 +131,10 @@
#define SCTL_BASE V2M_SYSCTL
#define VEXPRESS_FLASHPROG_FLVPPEN (1 << 0)
#define CONFIG_SYS_TIMER_RATE 1000000
#define CONFIG_SYS_TIMER_COUNTER (0x10011000 + 0x4)
#define CONFIG_SYS_TIMER_COUNTS_DOWN
/* SMSC9115 Ethernet from SMSC9118 family */
#define CONFIG_SMC911X 1
#define CONFIG_SMC911X_32_BIT 1