diff options
Diffstat (limited to 'hw/armv7m_nvic.c')
| -rw-r--r-- | hw/armv7m_nvic.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/hw/armv7m_nvic.c b/hw/armv7m_nvic.c index 99ea9873a7..fc60487dee 100644 --- a/hw/armv7m_nvic.c +++ b/hw/armv7m_nvic.c @@ -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; } |