microblaze: Read information about RAM from DT

Do not setup ram start/size in board file. Read it from DT instead.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/microblaze-generic/microblaze-generic.c

@@ -23,7 +23,6 @@ DECLARE_GLOBAL_DATA_PTR;
 static int reset_pin = -1;
 #endif
 
-#if CONFIG_IS_ENABLED(OF_CONTROL)
 ulong ram_base;
 
 void dram_init_banksize(void)
@@ -57,14 +56,6 @@ int dram_init(void)
 
 	return 0;
 };
-#else
-int dram_init(void)
-{
-	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
-
-	return 0;
-}
-#endif
 
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {

board/xilinx/microblaze-generic/xparameters.h

@@ -35,10 +35,6 @@
 #define XILINX_FLASH_START	0x2c000000
 #define XILINX_FLASH_SIZE	0x00800000
 
-/* Main Memory is DDR_SDRAM_64Mx32 */
-#define XILINX_RAM_START	0x28000000
-#define XILINX_RAM_SIZE	0x04000000
-
 /* Watchdog IP is wxi_timebase_wdt_0 */
 #define XILINX_WATCHDOG_BASEADDR	0x50000000
 #define XILINX_WATCHDOG_IRQ		1