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UEFI: bug fix on redundant waking up APs

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Due to redundant waking up APs When rebooting UOS, the crash occurs
and fail to reboot UOS.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zheng, Gen 2018-04-23 15:49:48 +08:00 committed by lijinxia
parent ccc0b01fec
commit f1d2775b04
1 changed files with 6 additions and 0 deletions
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6
bsp/uefi/uefi.c
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@ -104,6 +104,12 @@ void efi_deferred_wakeup_pcpu(int cpu_id)
{
uint32_t timeout;
uint32_t expected_up;
static uint32_t waked_pcpu_bitmap;
if ((1 << cpu_id) & waked_pcpu_bitmap)
return;
waked_pcpu_bitmap |= 1 << cpu_id;
expected_up = up_count + 1;