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-rw-r--r--src/soc/intel/denverton_ns/cpu.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/denverton_ns/cpu.c b/src/soc/intel/denverton_ns/cpu.c
index 1dc0830d86..10e79be3b5 100644
--- a/src/soc/intel/denverton_ns/cpu.c
+++ b/src/soc/intel/denverton_ns/cpu.c
@@ -287,6 +287,14 @@ static const struct mp_ops mp_ops = {
void denverton_init_cpus(struct device *dev)
{
+ /*
+ * Ensure there is at least one bus downstream to the CPU device. If not, then create a
+ * new link. This can occur if the mainboard does not add any APIC device in the device
+ * tree.
+ */
+ if (!dev->link_list)
+ add_more_links(dev, 1);
+
/* Clear for take-off */
if (mp_init_with_smm(dev->link_list, &mp_ops) < 0)
printk(BIOS_ERR, "MP initialization failure.\n");