1 files changed, 35 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/pci/pci_routing_info.c b/src/soc/amd/common/block/pci/pci_routing_info.c
index e0a696442e6e..ac7255348e10 100644
--- a/src/soc/amd/common/block/pci/pci_routing_info.c
+++ b/src/soc/amd/common/block/pci/pci_routing_info.c
@@ -3,6 +3,7 @@
 #include <amdblocks/amd_pci_util.h>
 #include <console/console.h>
 #include <device/pci_def.h>
+#include <stdlib.h>
 #include <types.h>
 
 enum pcie_swizzle_pin {
@@ -55,3 +56,37 @@ unsigned int pci_calculate_irq(const struct pci_routing_info *routing_info,
 
 	return irq;
 }
+
+void populate_pirq_data(void)
+{
+	const struct pci_routing_info *routing_table, *routing_entry;
+	size_t entries = 0;
+	struct pirq_struct *pirq;
+	unsigned int irq;
+
+	routing_table = get_pci_routing_table(&entries);
+
+	if (!routing_table || !entries)
+		return;
+
+	pirq = calloc(entries, sizeof(*pirq));
+
+	if (!pirq) {
+		printk(BIOS_ERR, "%s: Allocation failed\n", __func__);
+		return;
+	}
+
+	for (size_t i = 0; i < entries; ++i) {
+		routing_entry = &routing_table[i];
+
+		pirq[i].devfn = routing_entry->devfn;
+		for (size_t j = 0; j < 4; ++j) {
+			irq = pci_calculate_irq(routing_entry, j);
+
+			pirq[i].PIN[j] = irq % 8;
+		}
+	}
+
+	pirq_data_ptr = pirq;
+	pirq_data_size = entries;
+}