xen/arm: add SCI mediator support for DomUs

Integration of the SCMI mediator with xen libs:
- add hypercalls to aquire SCI channel and set device permissions
for DomUs;
- add SCMI_SMC nodes to DomUs device-tree based on partial device-tree;
- SCI requests redirection from DomUs to Firmware.

Signed-off-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>

Author: oleksiimoisieiev

tools/include/xenctrl.h

@@ -1230,6 +1230,9 @@ int xc_domain_getvnuma(xc_interface *xch,
 int xc_domain_soft_reset(xc_interface *xch,
                          uint32_t domid);
 
+int xc_domain_get_sci_info(xc_interface *xch, uint32_t domid,
+                           uint64_t *paddr, uint32_t *func_id);
+
 #if defined(__i386__) || defined(__x86_64__)
 /*
  * PC BIOS standard E820 types and structure.

tools/libs/ctrl/xc_domain.c

@@ -2219,6 +2219,23 @@ int xc_domain_setrproc(xc_interface *xch,
     return do_domctl(xch, &domctl);
 }
 
+int xc_domain_get_sci_info(xc_interface *xch, uint32_t domid,
+                            uint64_t *paddr, uint32_t *func_id)
+{
+    struct xen_domctl domctl = {};
+
+    memset(&domctl, 0, sizeof(domctl));
+    domctl.cmd = XEN_DOMCTL_get_sci_info;
+    domctl.domain = domid;
+
+    if ( do_domctl(xch, &domctl) != 0 )
+        return 1;
+
+    *paddr = domctl.u.sci_info.paddr;
+    *func_id = domctl.u.sci_info.func_id;
+    return 0;
+}
+
 /*
  * Local variables:
  * mode: C