[Xen-changelog] [qemu-upstream-unstable] pseries: Populate "/chosen/linux, stdout-path" in the FDT

[patchbot@xxxxxxx]

commit 7a6d80e93cb461a985ffb64bc4d19dd5f726386b
Author: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Date:   Tue Dec 13 15:24:34 2011 +1100

    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@xxxxxxxxxxxxxx>
    Signed-off-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Alexander Graf <agraf@xxxxxxx>
    (cherry picked from commit 68f3a94c64bbaaf8c7f2daa70de1b5d87a432f86)
---
 hw/spapr.c     |    2 ++
 hw/spapr_vio.c |   34 ++++++++++++++++++++++++++++++++++
 hw/spapr_vio.h |    3 +++
 hw/spapr_vty.c |    2 +-
 4 files changed, 40 insertions(+), 1 deletions(-)

diff --git a/hw/spapr.c b/hw/spapr.c
index 2b901f1..5a98d86 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -351,6 +351,8 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
         fprintf(stderr, "Couldn't set up RTAS device tree properties\n");
     }
 
+    spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
+
     _FDT((fdt_pack(fdt)));
 
     cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt));
diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c
index 8bd00ca..464fe87 100644
--- a/hw/spapr_vio.c
+++ b/hw/spapr_vio.c
@@ -806,4 +806,38 @@ 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 */
diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h
index a325a5f..9fcd304 100644
--- a/hw/spapr_vio.h
+++ b/hw/spapr_vio.h
@@ -83,6 +83,7 @@ extern VIOsPAPRBus *spapr_vio_bus_init(void);
 extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
 extern void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info);
 extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
+extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
 
 extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
 
@@ -108,6 +109,8 @@ void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, 
CharDriverState *chardev);
 void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd);
 void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg);
 
+VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
+
 int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
 void spapr_vio_quiesce(void);
 
diff --git a/hw/spapr_vty.c b/hw/spapr_vty.c
index e2fec58..386ccf7 100644
--- a/hw/spapr_vty.c
+++ b/hw/spapr_vty.c
@@ -156,7 +156,7 @@ static VIOsPAPRDeviceInfo spapr_vty = {
     },
 };
 
-static VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus)
+VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus)
 {
     VIOsPAPRDevice *sdev, *selected;
     DeviceState *iter;
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

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