Displaying 2 results from an estimated 2 matches for "system_reset_latch".
2012 Mar 27
0
[PATCH 1/4] x86/hpet: disable before reboot or kexec
...y(u32, 2 + last);
+ hpet_resume(hpet_boot_cfg);
hpet_rate = 1000000000000000ULL; /* 10^15 */
(void)do_div(hpet_rate, hpet_period);
@@ -740,24 +745,29 @@ u64 __init hpet_setup(void)
return hpet_rate;
}
-void hpet_resume(void)
+void hpet_resume(u32 *boot_cfg)
{
static u32 system_reset_latch;
u32 hpet_id, cfg;
- unsigned int i;
+ unsigned int i, last;
if ( system_reset_latch == system_reset_counter )
return;
system_reset_latch = system_reset_counter;
cfg = hpet_read32(HPET_CFG);
+ if ( boot_cfg )
+ *boot_cfg = cfg;
cfg &= ~(HPET...
2008 Nov 27
0
[PATCH] x86, hpet: check hpet existence
...r else BAD PERIOD error can be seen.
Signed-off-by Kevin Tian <kevin.tian@intel.com>
diff -r ab0c1bdede53 xen/arch/x86/hpet.c
--- a/xen/arch/x86/hpet.c Wed Nov 26 11:14:26 2008 +0000
+++ b/xen/arch/x86/hpet.c Wed Nov 26 19:22:03 2008 -0500
@@ -273,6 +273,8 @@
return hpet_rate;
system_reset_latch = system_reset_counter;
+ if ( !hpet_address )
+ return 0;
set_fixmap_nocache(FIX_HPET_BASE, hpet_address);
hpet_id = hpet_read32(HPET_ID);
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