[S] Change in coreboot[master]: cpu/x86/mp_init: adjust timeout for 2nd SIPI

[Jonathan Zhang (Code Review)]

Jonathan Zhang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68786 )

Change subject: cpu/x86/mp_init: adjust timeout for 2nd SIPI
......................................................................

cpu/x86/mp_init: adjust timeout for 2nd SIPI

Adjust timeout for 2nd SIPI to satisfy some to-be-launched
server processors.

Add a trace print to display how long it takes for the APs
to be ready. This facilitates trouble shooting and trend
analysis.

Change-Id: Id958f18bdcb34d76df8aa443161123252524328e
Signed-off-by: Jonathan Zhang

temp

Change-Id: I29f9aba1d0256b7b3458a78b0b8a8b4b294c4482
Signed-off-by: [e-mail]
---
M src/cpu/x86/mp_init.c
1 file changed, 25 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/68786/1

diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c
index df74d24..c3936c06 100644
--- a/src/cpu/x86/mp_init.c
+++ b/src/cpu/x86/mp_init.c
@@ -151,6 +151,7 @@
    }

/* APs ready before timeout */
+	printk(BIOS_TRACE, "APs are ready after %dus\n", delayed);
    return CB_SUCCESS;
 }

@@ -468,7 +469,7 @@
    	if (send_sipi_to_aps(ap_count, num_aps, sipi_vector) != CB_SUCCESS)
    		return CB_ERR;

-		/* Wait for CPUs to check in up to 200 us. */
+		/* Wait for CPUs to check in. */
    	wait_for_aps(num_aps, ap_count, 200 /* us */, 15 /* us */);
    }

@@ -477,7 +478,7 @@
    	return CB_ERR;

/* Wait for CPUs to check in. */
-	if (wait_for_aps(num_aps, ap_count, 100000 /* 100 ms */, 50 /* us */) != CB_SUCCESS) {
+	if (wait_for_aps(num_aps, ap_count, 400000 /* 400 ms */, 50 /* us */) != CB_SUCCESS) {
    	printk(BIOS_ERR, "Not all APs checked in: %d/%d.\n",
    	       atomic_read(num_aps), ap_count);
    	return CB_ERR;