1 /* 2 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <asm/post.h> 9 #include <asm/arch/quark.h> 10 11 DECLARE_GLOBAL_DATA_PTR; 12 13 int dram_init(void) 14 { 15 /* hardcode the DRAM size for now */ 16 gd->ram_size = DRAM_MAX_SIZE; 17 post_code(POST_DRAM); 18 19 return 0; 20 } 21 22 void dram_init_banksize(void) 23 { 24 gd->bd->bi_dram[0].start = 0; 25 gd->bd->bi_dram[0].size = gd->ram_size; 26 } 27 28 /* 29 * This function looks for the highest region of memory lower than 4GB which 30 * has enough space for U-Boot where U-Boot is aligned on a page boundary. 31 * It overrides the default implementation found elsewhere which simply 32 * picks the end of ram, wherever that may be. The location of the stack, 33 * the relocation address, and how far U-Boot is moved by relocation are 34 * set in the global data structure. 35 */ 36 ulong board_get_usable_ram_top(ulong total_size) 37 { 38 return gd->ram_size; 39 } 40