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authorDavid Gibson <david@gibson.dropbear.id.au>2011-12-13 15:24:34 +1100
committerAlexander Graf <agraf@suse.de>2012-01-03 15:49:12 +0100
commit68f3a94c64bbaaf8c7f2daa70de1b5d87a432f86 (patch)
tree3fe6f6853380cf32988745e17896aed3ae9ee540 /hw/spapr_vio.c
parent98331f8ad6a3e2cfbb402d72e6be47eac7706251 (diff)
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pseries: Populate "/chosen/linux,stdout-path" in the FDT
There is a device tree property "/chosen/linux,stdout-path" which indicates which device should be used as stdout - ie. "the console". Currently we don't specify anything, which means both firmware and Linux choose something arbitrarily. Use the routine we added in the last patch to pick a default vty and specify it as stdout. Currently SLOF doesn't use the property, but we are hoping to update it to do so. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/spapr_vio.c')
-rw-r--r--hw/spapr_vio.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c
index 2cce421..cd03416 100644
--- a/hw/spapr_vio.c
+++ b/hw/spapr_vio.c
@@ -793,4 +793,38 @@ out:
return ret;
}
+
+int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus)
+{
+ VIOsPAPRDevice *dev;
+ char *name, *path;
+ int ret, offset;
+
+ dev = spapr_vty_get_default(bus);
+ if (!dev)
+ return 0;
+
+ offset = fdt_path_offset(fdt, "/chosen");
+ if (offset < 0) {
+ return offset;
+ }
+
+ name = vio_format_dev_name(dev);
+ if (!name) {
+ return -ENOMEM;
+ }
+
+ if (asprintf(&path, "/vdevice/%s", name) < 0) {
+ path = NULL;
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = fdt_setprop_string(fdt, offset, "linux,stdout-path", path);
+out:
+ free(name);
+ free(path);
+
+ return ret;
+}
#endif /* CONFIG_FDT */