[Xen-changelog] [xen master] xen/arm: Create a fake PSCI node in dom0 device tree

[patchbot@xxxxxxx]

commit de6ba7028ab4ead8187441943aee872a3a22061c
Author:     Julien Grall <julien.grall@xxxxxxxxxx>
AuthorDate: Fri Sep 13 13:49:22 2013 +0100
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Tue Sep 17 15:28:37 2013 +0100

    xen/arm: Create a fake PSCI node in dom0 device tree
    
    Xen uses PSCI to bring up secondary cpus for the guest.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
    Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/arch/arm/domain_build.c |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 70f48b6..e1333a4 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -13,6 +13,7 @@
 #include <xen/guest_access.h>
 #include <asm/setup.h>
 #include <asm/platform.h>
+#include <asm/psci.h>
 
 #include <asm/gic.h>
 #include <xen/irq.h>
@@ -319,6 +320,38 @@ static int make_hypervisor_node(void *fdt, const struct 
dt_device_node *parent)
     return res;
 }
 
+static int make_psci_node(void *fdt, const struct dt_device_node *parent)
+{
+    int res;
+
+    DPRINT("Create PSCI node\n");
+
+    /* See linux Documentation/devicetree/bindings/arm/psci.txt */
+    res = fdt_begin_node(fdt, "psci");
+    if ( res )
+        return res;
+
+    res = fdt_property_string(fdt, "compatible", "arm,psci");
+    if ( res )
+        return res;
+
+    res = fdt_property_string(fdt, "method", "hvc");
+    if ( res )
+        return res;
+
+    res = fdt_property_cell(fdt, "cpu_off", __PSCI_cpu_off);
+    if ( res )
+        return res;
+
+    res = fdt_property_cell(fdt, "cpu_on", __PSCI_cpu_on);
+    if ( res )
+        return res;
+
+    res = fdt_end_node(fdt);
+
+    return res;
+}
+
 /* Map the device in the domain */
 static int map_device(struct domain *d, const struct dt_device_node *dev)
 {
@@ -406,6 +439,7 @@ static int handle_node(struct domain *d, struct kernel_info 
*kinfo,
     {
         DT_MATCH_COMPATIBLE("xen,xen"),
         DT_MATCH_COMPATIBLE("xen,multiboot-module"),
+        DT_MATCH_COMPATIBLE("arm,psci"),
         { /* sentinel */ },
     };
     const struct dt_device_node *child;
@@ -471,6 +505,10 @@ static int handle_node(struct domain *d, struct 
kernel_info *kinfo,
         res = make_hypervisor_node(kinfo->fdt, np);
         if ( res )
             return res;
+
+        res = make_psci_node(kinfo->fdt, np);
+        if ( res )
+            return res;
     }
 
     res = fdt_end_node(kinfo->fdt);
--
generated by git-patchbot for /home/xen/git/xen.git#master

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