lib: generic: Add support for a78 with System Device Tree workflow

System Device Tree workflow is AMD-Xilinx workflow whereby the BSP,
libraries and applications in software are derived from a
hardware-design. The hardware-design is used to generate a system
device tree (SDT) that describes information for Linux and other
processing environments.

The xreg/xcpu files are not generated for SDT workflow. Because of
this do not include if SDT symbol is present in BSP.

Signed-off-by: Ben Levinsky <ben.levinsky@amd.com>

lib/system/generic/xlnx_common/CMakeLists.txt

@@ -2,8 +2,8 @@ collect (PROJECT_LIB_HEADERS sys.h)
 
 collect (PROJECT_LIB_SOURCES irq.c)
 
-if ("${PROJECT_MACHINE}" STREQUAL "zynqmp_a53" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a72")
+if ("${PROJECT_MACHINE}" STREQUAL "zynqmp_a53" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a72" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a78")
   add_subdirectory(zynqmp_aarch64)
-endif ("${PROJECT_MACHINE}" STREQUAL "zynqmp_a53" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a72")
+  endif ("${PROJECT_MACHINE}" STREQUAL "zynqmp_a53" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a72" OR "${PROJECT_MACHINE}" STREQUAL "zynqmp_a78")
 
 # vim: expandtab:ts=2:sw=2:smartindent

lib/system/generic/xlnx_common/zynqmp_aarch64/sys.c

@@ -19,13 +19,17 @@
 #include "xil_mmu.h"
 #include "xscugic.h"
 
+/* System Device Tree (SDT) flow does not have the files generated. */
+#ifndef SDT
+
 #ifdef VERSAL_NET
 #include "xcpu_cortexa78.h"
 #elif defined(versal)
 #include "xcpu_cortexa72.h"
 #else
 #include "xreg_cortexa53.h"
 #endif /* defined(versal) */
+#endif /* !SDT */
 
 void sys_irq_restore_enable(unsigned int flags)
 {