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| author | Subrata Banik <subrata.banik@intel.com> | 2018-04-11 18:45:57 +0530 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2018-05-03 14:56:16 +0000 |
| commit | 838f296d059962196bb50db4b009d1d890cae0be (patch) | |
| tree | 82ae2464612595bae4b3fc6fe4370ec6ad24228f /src/cpu | |
| parent | e93634caa0ac8bd9286cf0eeb36ea960d738de2e (diff) | |
| download | coreboot-838f296d059962196bb50db4b009d1d890cae0be.tar.xz | |
cpu/x86: Add infinite timeout support into run_ap_work() function
There might be certain requirement in user function where user
might not want to pass any timeout value, in those cases
run_ap_work() should consider infinity as timeout and perform
all APs initialization as per specification.
Set expire_us <= 0 to specify an infinite timeout.
BRANCH=none
BUG=b:74436746
TEST=run_ap_work() is running successfully with 0 expire_us.
Change-Id: Iacd67768c8a120f6a01baaa6817468f6b9a3b764
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/25622
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/x86/mp_init.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c index f99abaf245..585a54b86d 100644 --- a/src/cpu/x86/mp_init.c +++ b/src/cpu/x86/mp_init.c @@ -907,7 +907,9 @@ static int run_ap_work(mp_callback_t func, long expire_us) mfence(); /* Wait for all the APs to signal back that call has been accepted. */ - stopwatch_init_usecs_expire(&sw, expire_us); + if (expire_us > 0) + stopwatch_init_usecs_expire(&sw, expire_us); + do { cpus_accepted = 0; @@ -920,7 +922,7 @@ static int run_ap_work(mp_callback_t func, long expire_us) if (cpus_accepted == global_num_aps) return 0; - } while (!stopwatch_expired(&sw)); + } while (expire_us <= 0 || !stopwatch_expired(&sw)); printk(BIOS_ERR, "AP call expired. %d/%d CPUs accepted.\n", cpus_accepted, global_num_aps); |