New patch to review for coreboot: sb/amd/sr5650: Correctly locate CPU MMIO resource

[Timothy Pearson]

Timothy Pearson ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12821

-gerrit

commit 24ebeac5f5ffd4b3d292690243511b0886b1c903
Author: Timothy Pearson 
Date:   Fri Jan 1 23:30:42 2016 -0600

sb/amd/sr5650: Correctly locate CPU MMIO resource

The code committed in GIT hash 1eaaa0 did not correctly
    locate the CPU MMIO resource, leading to failures with
    operating systems and firmware when the PCI extended
    configuration space option was activated.

Search for the CPU MMIO resource on all domains below
    the root device.

Change-Id: I0df2f825fef2de46563db87af78d0609ab3d8c5a
    Signed-off-by: Timothy Pearson 
---
 src/southbridge/amd/sr5650/sr5650.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/src/southbridge/amd/sr5650/sr5650.c b/src/southbridge/amd/sr5650/sr5650.c
index d4355d6..c4336a6 100644
--- a/src/southbridge/amd/sr5650/sr5650.c
+++ b/src/southbridge/amd/sr5650/sr5650.c
@@ -35,15 +35,21 @@ extern void set_pcie_dereset(void);
 extern void set_pcie_reset(void);

struct resource * sr5650_retrieve_cpu_mmio_resource() {
-	device_t cpu;
+	device_t domain;
+	struct device *sibling;
+	struct bus *link;
    struct resource *res;

-	for (cpu = all_devices; cpu; cpu = cpu->next) {
-		if (cpu->bus->dev->path.type != DEVICE_PATH_CPU_CLUSTER)
-			continue;
-		res = probe_resource(cpu->bus->dev, 0xc0010058);
-		if (res)
-			return res;
+	for (link = all_devices->link_list; link; link = link->next) {
+		for (sibling = link->children; sibling; sibling = sibling->sibling) {
+			for (domain = sibling; domain; domain = domain->next) {
+				if (domain->bus->dev->path.type != DEVICE_PATH_DOMAIN)
+					continue;
+				res = probe_resource(domain->bus->dev, 0xc0010058);
+				if (res)
+					return res;
+			}
+		}
    }

return NULL;