[S] Change in coreboot[master]: mp_init: Wait longer for APs to check in

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/73369 )

Change subject: mp_init: Wait longer for APs to check in
......................................................................

mp_init: Wait longer for APs to check in

On IBM/SBP1 with 384 cores it takes a while for all APs
to check int. Use linear scaling instead of hardcoding an
arbitrary limit.

Change-Id: If020a3fa985bfc7fd2f0aa836dc04e6647a1a450
Signed-off-by: Patrick Rudolph 
---
M src/cpu/x86/mp_init.c
1 file changed, 15 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/73369/1

diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c
index 8c48f90..6ea86b8 100644
--- a/src/cpu/x86/mp_init.c
+++ b/src/cpu/x86/mp_init.c
@@ -479,7 +479,7 @@
    	return CB_ERR;

/* Wait for CPUs to check in. */
-	if (wait_for_aps(num_aps, ap_count, 400000 /* 400 ms */, 50 /* us */) != CB_SUCCESS) {
+	if (wait_for_aps(num_aps, ap_count, 50000 * ap_count /* 50 ms per AP */, 50 /* us */) != CB_SUCCESS) {
    	printk(BIOS_ERR, "Not all APs checked in: %d/%d.\n",
    	       atomic_read(num_aps), ap_count);
    	return CB_ERR;