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x86: Permit bootstage and timer data to be used prior to relocation

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It is useful to be able to access the timer before U-Boot has relocated
so that we can fully support bootstage.

Add new global_data members to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2013-02-28 19:26:12 +00:00
parent 8937140957
commit bc2df1afb9
4 changed files with 16 additions and 18 deletions
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9
arch/x86/lib/timer.c
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@@ -37,7 +37,6 @@ struct timer_isr_function {
static struct timer_isr_function *first_timer_isr;
static unsigned long system_ticks;
static uint64_t base_value;
/*
* register_timer_isr() allows multiple architecture and board specific
@@ -102,7 +101,7 @@ ulong get_timer(ulong base)
void timer_set_tsc_base(uint64_t new_base)
{
base_value = new_base;
gd->arch.tsc_base = new_base;
}
uint64_t timer_get_tsc(void)
@@ -110,8 +109,8 @@ uint64_t timer_get_tsc(void)
uint64_t time_now;
time_now = rdtsc();
if (!base_value)
base_value = time_now;
if (!gd->arch.tsc_base)
gd->arch.tsc_base = time_now;
return time_now - base_value;
return time_now - gd->arch.tsc_base;
}