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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-01-06 17:40:36 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-01-08 02:51:47 +0000
commitdb866ba2009f6376dc8fd32e506a614439ba618c (patch)
tree1df01e74811668c31e8c2cf51844211b9043dcfe /src/device/device_const.c
parenta6ce5d3faa5de44a8d2ac183c4478f8da14ddbaf (diff)
downloadcoreboot-db866ba2009f6376dc8fd32e506a614439ba618c.tar.xz
amdfam10 boards: Fix regression on dev_find_slot() removal
For these platforms, the first PCI node on devicetree is not the root of PCI bus hierarchy, and the topology (bus->children and dev->sibling links) are getting manipulated during HyperTransport enumeration. This workaround reverts back to old dev_find_slot() with its bad semantics. Change-Id: I19745c3070c12e562ffab2f0243c9d91dd051c72 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/30695 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/device/device_const.c')
-rw-r--r--src/device/device_const.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/device/device_const.c b/src/device/device_const.c
index ec128e877d..f60f749c49 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -187,9 +187,17 @@ DEVTREE_CONST struct device *pcidev_path_on_root(pci_devfn_t devfn)
{
DEVTREE_CONST struct device *pci_domain;
+ /* Work around pcidev_path_behind() below failing
+ * due tue complicated devicetree with topology
+ * being manipulated on-the-fly.
+ */
+ if (IS_ENABLED(CONFIG_NORTHBRIDGE_AMD_AMDFAM10))
+ return dev_find_slot(0, devfn);
+
pci_domain = dev_find_path(NULL, DEVICE_PATH_DOMAIN);
if (!pci_domain)
return NULL;
+
return pcidev_path_behind(pci_domain->link_list, devfn);
}