[coreboot-gerrit] Change in coreboot[master]: util/sconfig: Expose usable PCI and PNP device names

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/31933 )

Change subject: util/sconfig: Expose usable PCI and PNP device names
......................................................................

util/sconfig: Expose usable PCI and PNP device names

These devices can be accessed directly by symbolname,
without a search and walk through the tree, as they
have static paths.

Change-Id: I711058f5c809fa9bc7ea4333aaebad6847ebdfd4
Signed-off-by: Kyösti Mälkki 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31933
Reviewed-by: Felix Held 
Tested-by: build bot (Jenkins) 
---
M util/sconfig/main.c
1 file changed, 16 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Held: Looks good to me, approved

diff --git a/util/sconfig/main.c b/util/sconfig/main.c
index 5e3a1d4..6b421ec 100644
--- a/util/sconfig/main.c
+++ b/util/sconfig/main.c
@@ -883,6 +883,18 @@
    	emit_dev_links(fil, ptr);
 }

+static void expose_device_names(FILE *fil, struct device *ptr, struct device *next)
+{
+	/* Only devices on root bus here. */
+	if (ptr->bustype == PCI && ptr->parent->dev->bustype == DOMAIN)
+		fprintf(fil, "DEVTREE_CONST struct device *DEVTREE_CONST __pci_0_%02x_%d = &%s;\n",
+			ptr->path_a, ptr->path_b, ptr->name);
+
+	if (ptr->bustype == PNP)
+		fprintf(fil, "DEVTREE_CONST struct device *DEVTREE_CONST __pnp_%04x_%02x = &%s;\n",
+			ptr->path_a, ptr->path_b, ptr->name);
+}
+
 static void add_siblings_to_queue(struct queue_entry **bfs_q_head,
    			  struct device *d)
 {
@@ -1385,6 +1397,10 @@
    fprintf(autogen, "\n/* pass 1 */\n");
    walk_device_tree(autogen, &base_root_dev, pass1);

+	/* Expose static devicenames to global namespace. */
+	fprintf(autogen, "\n/* expose_device_names */\n");
+	walk_device_tree(autogen, &base_root_dev, expose_device_names);
+
    fclose(autogen);

return 0;