feat(versal): ddr address reservation in dtb at runtime
When the TF-A is placed in DDR memory range, the DDR memory range
needs to be explicitly reserved in the default device tree.
A new build time parameter, XILINX_OF_BOARD_DTB_ADDR, is introduced.
The TF-A will reserve the DDR memory only when a valid DTB address
is provided to XILINX_OF_BOARD_DTB_ADDR during build.
Now the user has options, either manually reserve the desired DDR
address range for TF-A in device tree or let TF-A access and modify
the device tree, to reserve the DDR address range, in runtime using
the build parameter.
Change-Id: I4442a90e1cab5a3a115f4eeb8a7e09e247189ff0
Signed-off-by: Amit Nagal <amit.nagal@amd.com>
Signed-off-by: Akshay Belsare <akshay.belsare@amd.com>
diff --git a/plat/xilinx/versal/bl31_versal_setup.c b/plat/xilinx/versal/bl31_versal_setup.c
index 0ef92a6..6cb529b 100644
--- a/plat/xilinx/versal/bl31_versal_setup.c
+++ b/plat/xilinx/versal/bl31_versal_setup.c
@@ -20,6 +20,7 @@
#include <plat/common/platform.h>
#include <plat_arm.h>
+#include <plat_fdt.h>
#include <plat_private.h>
#include <plat_startup.h>
#include "pm_api_sys.h"
@@ -191,8 +192,11 @@
return 0;
}
+
void bl31_platform_setup(void)
{
+ prepare_dtb();
+
/* Initialize the gic cpu and distributor interfaces */
plat_versal_gic_driver_init();
plat_versal_gic_init();
@@ -220,6 +224,10 @@
plat_arm_interconnect_enter_coherency();
const mmap_region_t bl_regions[] = {
+#if (defined(XILINX_OF_BOARD_DTB_ADDR) && !IS_TFA_IN_OCM(BL31_BASE))
+ MAP_REGION_FLAT(XILINX_OF_BOARD_DTB_ADDR, XILINX_OF_BOARD_DTB_MAX_SIZE,
+ MT_MEMORY | MT_RW | MT_NS),
+#endif
MAP_REGION_FLAT(BL31_BASE, BL31_END - BL31_BASE,
MT_MEMORY | MT_RW | MT_SECURE),
MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE,