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sandbox: timer: Support the early timer 

Add support for the early timer so we can use tracing with sandbox again.

Signed-off-by: Simon Glass <sjg@chromium.org>
utp
Simon Glass 2016-02-24 09:14:51 -07:00
parent 1057e6cfe1
commit 01476eaf07
1 changed files with 15 additions and 3 deletions
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18
drivers/timer/sandbox_timer.c
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@ -10,6 +10,8 @@
#include <timer.h>
#include <os.h>
#define SANDBOX_TIMER_RATE 1000000
/* system timer offset in ms */
static unsigned long sandbox_timer_offset;
@ -18,9 +20,19 @@ void sandbox_timer_add_offset(unsigned long offset)
sandbox_timer_offset += offset;
}
static int sandbox_timer_get_count(struct udevice *dev, u64 *count)
u64 notrace timer_early_get_count(void)
{
*count = os_get_nsec() / 1000 + sandbox_timer_offset * 1000;
return os_get_nsec() / 1000 + sandbox_timer_offset * 1000;
}
unsigned long notrace timer_early_get_rate(void)
{
return SANDBOX_TIMER_RATE;
}
static notrace int sandbox_timer_get_count(struct udevice *dev, u64 *count)
{
*count = timer_early_get_count();
return 0;
}
@ -30,7 +42,7 @@ static int sandbox_timer_probe(struct udevice *dev)
struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
if (!uc_priv->clock_rate)
uc_priv->clock_rate = 1000000;
uc_priv->clock_rate = SANDBOX_TIMER_RATE;
return 0;
}