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ARMv7-M SysTick fix.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3727 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-11-24 03:09:07 +00:00
parent aae9366a03
commit e57ec0168c
4 changed files with 9 additions and 11 deletions
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9
hw/armv7m_nvic.c
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@ -48,14 +48,15 @@ typedef struct {
#define SYSTICK_CLKSOURCE (1 << 2)
#define SYSTICK_COUNTFLAG (1 << 16)
/* Conversion factor from qemu timer to SysTick frequencies.
QEMU uses a base of 1GHz, so these give 20MHz and 1MHz for core and
reference frequencies. */
/* Multiplication factor to convert from system clock ticks to qemu timer
ticks. */
int system_clock_scale;
/* Conversion factor from qemu timer to SysTick frequencies. */
static inline int64_t systick_scale(nvic_state *s)
{
if (s->systick.control & SYSTICK_CLKSOURCE)
return 50;
return system_clock_scale;
else
return 1000;
}