zynq: Add OF ram initialization support
Read ram size directly from DTB.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c
index 82f2345..485a5e4 100644
--- a/board/xilinx/zynq/board.c
+++ b/board/xilinx/zynq/board.c
@@ -5,6 +5,7 @@
*/
#include <common.h>
+#include <fdtdec.h>
#include <netdev.h>
#include <zynqpl.h>
#include <asm/arch/hardware.h>
@@ -134,8 +135,27 @@
int dram_init(void)
{
- gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+#ifdef CONFIG_OF_CONTROL
+ int node;
+ fdt_addr_t addr;
+ fdt_size_t size;
+ const void *blob = gd->fdt_blob;
+ node = fdt_node_offset_by_prop_value(blob, -1, "device_type",
+ "memory", 7);
+ if (node == -FDT_ERR_NOTFOUND) {
+ debug("ZYNQ DRAM: Can't get memory node\n");
+ return -1;
+ }
+ addr = fdtdec_get_addr_size(blob, node, "reg", &size);
+ if (addr == FDT_ADDR_T_NONE || size == 0) {
+ debug("ZYNQ DRAM: Can't get base address or size\n");
+ return -1;
+ }
+ gd->ram_size = size;
+#else
+ gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+#endif
zynq_ddrc_init();
return 0;