[Xen-changelog] [qemu-xen master] arm: Create /chosen and /memory devicetree nodes if necessary

[patchbot@xxxxxxx]

commit b77257d7bae26a0fca6a90af88d54ee2c45f5b61
Author:     Guenter Roeck <linux@xxxxxxxxxxxx>
AuthorDate: Wed Nov 16 17:30:21 2016 -0800
Commit:     Peter Maydell <peter.maydell@xxxxxxxxxx>
CommitDate: Mon Nov 28 11:32:34 2016 +0000

    arm: Create /chosen and /memory devicetree nodes if necessary
    
    While customary, the /chosen and /memory devicetree nodes do not have to
    exist. Create if necessary. Also create the /memory/device_type property
    if needed.
    
    Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
    Message-id: 1479346221-18474-1-git-send-email-linux@xxxxxxxxxxxx
    Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
    Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
 hw/arm/boot.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 942416d..ff621e4 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -9,6 +9,7 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include <libfdt.h>
 #include "hw/hw.h"
 #include "hw/arm/arm.h"
 #include "hw/arm/linux-boot-if.h"
@@ -486,6 +487,17 @@ static int load_dtb(hwaddr addr, const struct 
arm_boot_info *binfo,
             g_free(nodename);
         }
     } else {
+        Error *err = NULL;
+
+        rc = fdt_path_offset(fdt, "/memory");
+        if (rc < 0) {
+            qemu_fdt_add_subnode(fdt, "/memory");
+        }
+
+        if (!qemu_fdt_getprop(fdt, "/memory", "device_type", NULL, &err)) {
+            qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory");
+        }
+
         rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg",
                                           acells, binfo->loader_start,
                                           scells, binfo->ram_size);
@@ -495,6 +507,11 @@ static int load_dtb(hwaddr addr, const struct 
arm_boot_info *binfo,
         }
     }
 
+    rc = fdt_path_offset(fdt, "/chosen");
+    if (rc < 0) {
+        qemu_fdt_add_subnode(fdt, "/chosen");
+    }
+
     if (binfo->kernel_cmdline && *binfo->kernel_cmdline) {
         rc = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
                                      binfo->kernel_cmdline);
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#master

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