uefi-ref/posix-uefi
1
0
Fork 0
mirror of https://gitlab.com/bztsrc/posix-uefi synced 2026-08-26 10:23:04 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Use timer instead of stall in sleep, fix issue #56

Browse source
This commit is contained in:
bzt 2025-12-30 14:39:45 +01:00
parent 5fbf2d61e9
commit 8d50e069f3
1 changed files with 11 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
uefi/unistd.c
View file

@ -40,7 +40,17 @@ int usleep (unsigned long int __useconds)
unsigned int sleep (unsigned int __seconds)
{
BS->Stall((unsigned long int)__seconds * 1000000UL);
/* Issue 56: some real firmware is buggy and Stall doesn't work for large delays, so use a timer instead */
uint64_t usec = (uint64_t)__seconds * 1000000UL;
uintn_t index = 0;
efi_event_t timer_event;
efi_status_t status = status = BS->CreateEvent(EVT_TIMER, 0, NULL, NULL, &timer_event);
if(!EFI_ERROR(status)) {
BS->SetTimer(timer_event, TimerRelative, usec * 10UL);
BS->WaitForEvent(1, &timer_event, &index);
BS->CloseEvent(timer_event);
} else
BS->Stall(usec);
return 0;
}