From e57ec0168ce21cdda48ddf45d77b76185667d9e6 Mon Sep 17 00:00:00 2001
From: pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Sat, 24 Nov 2007 03:09:07 +0000
Subject: ARMv7-M SysTick fix.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3727 c046a42c-6fe2-441c-8c8c-71466251a162
---
 hw/armv7m_nvic.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'hw/armv7m_nvic.c')

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;
 }
-- 
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