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/include/platform_def.h b/plat/xilinx/versal/include/platform_def.h
index 6c1d8b6..4c0df4f 100644
--- a/plat/xilinx/versal/include/platform_def.h
+++ b/plat/xilinx/versal/include/platform_def.h
@@ -76,8 +76,29 @@
******************************************************************************/
#define PLAT_PHY_ADDR_SPACE_SIZE (1ull << 32)
#define PLAT_VIRT_ADDR_SPACE_SIZE (1ull << 32)
+
+#define XILINX_OF_BOARD_DTB_MAX_SIZE U(0x200000)
+
+#define PLAT_OCM_BSE U(0xFFFE0000)
+#define PLAT_OCM_LIMIT U(0xFFFFFFFF)
+
+#define IS_TFA_IN_OCM(x) ((x >= PLAT_OCM_BASE) && (x < PLAT_OCM_LIMIT))
+
+#ifndef MAX_MMAP_REGIONS
+#if (defined(XILINX_OF_BOARD_DTB_ADDR) && !IS_TFA_IN_OCM(BL31_BASE))
+#define MAX_MMAP_REGIONS 9
+#else
#define MAX_MMAP_REGIONS 8
-#define MAX_XLAT_TABLES 5
+#endif
+#endif
+
+#ifndef MAX_XLAT_TABLES
+#if !IS_TFA_IN_OCM(BL31_BASE)
+#define MAX_XLAT_TABLES 9
+#else
+#define MAX_XLAT_TABLES 5
+#endif
+#endif
#define CACHE_WRITEBACK_SHIFT 6
#define CACHE_WRITEBACK_GRANULE (1 << CACHE_WRITEBACK_SHIFT)