Odroid U3: use common code for dram reservation

This commit removes the dram reservation from board file,
because it is done in a common code.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

board/samsung/odroid/odroid.c

@@ -427,10 +427,6 @@ int exynos_early_init_f(void)
 
 int exynos_init(void)
 {
-	/* The last MB of memory is reserved for secure firmware */
-	gd->ram_size -= SZ_1M;
-	gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= SZ_1M;
-
 	board_gpio_init();
 
 	return 0;

include/configs/odroid.h

@@ -29,6 +29,9 @@
 #define CONFIG_SYS_SDRAM_BASE	0x40000000
 #define SDRAM_BANK_SIZE		(256 << 20)	/* 256 MB */
 #define PHYS_SDRAM_1		CONFIG_SYS_SDRAM_BASE
+/* Reserve the last 1 MiB for the secure firmware */
+#define CONFIG_SYS_MEM_TOP_HIDE		(1UL << 20UL)
+#define CONFIG_TZSW_RESERVED_DRAM_SIZE	CONFIG_SYS_MEM_TOP_HIDE
 
 /* memtest works on */
 #define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
@@ -56,8 +59,6 @@
 #define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_LOAD_ADDR \
 					- GENERATED_GBL_DATA_SIZE)
 
-#define CONFIG_SYS_MEM_TOP_HIDE	(SZ_1M)	/* ram console */
-
 #define CONFIG_SYS_MONITOR_BASE	0x00000000
 
 #define CONFIG_ENV_IS_IN_MMC