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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-11-24 14:12:03 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-02-01 22:57:55 +0100 |
| commit | bd8ab8890f58342cb1397435ed18a7e549a29daf (patch) | |
| tree | 4d10a0ef84077746e23bb95b4c1b2158eb3b19ce /src/mainboard/asus | |
| parent | cb1dec57dc9458869692ff23c0b5ac2461ae0bcb (diff) | |
| download | coreboot-bd8ab8890f58342cb1397435ed18a7e549a29daf.tar.xz | |
mainboard/asus/kgpe-d16: Wait for all APs to stop before MCT setup
Under certain conditions when the APs are still executing during
MCT setup the system can hang. This was the root cause of most
of the S3 resume failures on this platform; waiting for AP stop
before MCT setup allows for reliable S3 resume.
Change-Id: I329eea9a8912d7b57efe6aae327d24fd6c3fd782
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13169
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard/asus')
| -rw-r--r-- | src/mainboard/asus/kgpe-d16/romstage.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/asus/kgpe-d16/romstage.c b/src/mainboard/asus/kgpe-d16/romstage.c index 89183cc286..1904bc2d11 100644 --- a/src/mainboard/asus/kgpe-d16/romstage.c +++ b/src/mainboard/asus/kgpe-d16/romstage.c @@ -515,6 +515,10 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) post_code(0x3B); + /* Wait for all APs to be stopped, otherwise ram initialization may hang */ + if (IS_ENABLED(CONFIG_LOGICAL_CPUS)) + wait_all_other_cores_stopped(bsp_apicid); + /* It's the time to set ctrl in sysinfo now; */ printk(BIOS_DEBUG, "fill_mem_ctrl() detected %d nodes\n", sysinfo->nodes); if (is_fam15h()) |