Similar to construct_dom0, construct_domU creates a barebone DomU guest.
The device tree node passed as argument is compatible "xen,domain", see
docs/misc/arm/device-tree/booting.txt.
Signed-off-by: Stefano Stabellini <stefa...@xilinx.com>
---
Changes in v2:
- rename mem to memory
- make cpus and memory mandatory
- remove wront comment from commit message
- cpus and memory are read as integers
- read the vpl011 option
---
xen/arch/arm/domain_build.c | 38 ++++++++++++++++++++++++++++++++++++++
xen/include/asm-arm/setup.h | 1 +
2 files changed, 39 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index ae3b16c..a4bc8fd 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -2223,6 +2223,44 @@ static int __init __construct_domain(struct domain *d,
struct kernel_info *kinfo
return 0;
}
+static int __init construct_domU(struct domain *d, struct dt_device_node *node)
+{
+ struct kernel_info kinfo = {};
+ int rc;
+ u32 mem, vpl011 = 0;
+
+ printk("*** LOADING DOMU ***\n");
+
+ rc = dt_property_read_u32(node, "cpus", &d->max_vcpus);
+ if ( !rc )
+ return -EINVAL;
+
+ rc = dt_property_read_u32(node, "memory", &mem);
+ if ( !rc )
+ return -EINVAL;
+ kinfo.unassigned_mem = (paddr_t)mem << 20;
+
+ dt_property_read_u32(node, "memory", &vpl011);
+
+ d->vcpu = xzalloc_array(struct vcpu *, d->max_vcpus);
+ if ( !d->vcpu )
+ return -ENOMEM;;
+ if ( alloc_vcpu(d, 0, 0) == NULL )
+ return -ENOMEM;
+ d->max_pages = ~0U;
+
+ kinfo.d = d;
+
+ rc = kernel_probe(&kinfo, node);
+ if ( rc < 0 )
+ return rc;
+
+ d->arch.type = kinfo.type;
+ allocate_memory(d, &kinfo);
+
+ return __construct_domain(d, &kinfo);
+}
+
int __init construct_dom0(struct domain *d)
{
struct kernel_info kinfo = {};
diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h
index d0e23f4..5ecfe27 100644
--- a/xen/include/asm-arm/setup.h
+++ b/xen/include/asm-arm/setup.h
@@ -2,6 +2,7 @@
#define __ARM_SETUP_H_
#include <public/version.h>
+#include <xen/device_tree.h>
#define MIN_FDT_ALIGN 8
#define MAX_FDT_SIZE SZ_2M
--
1.9.1
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