1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> 4 */ 5 6 #include <common.h> 7 #include <init.h> 8 #include <asm/fsp/fsp_support.h> 9 #include <asm/global_data.h> 10 dram_init(void)11int dram_init(void) 12 { 13 int ret; 14 15 /* The FSP has already set up DRAM, so grab the info we need */ 16 ret = fsp_scan_for_ram_size(); 17 if (ret) 18 return ret; 19 20 if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE)) { 21 struct mrc_output *mrc = &gd->arch.mrc[MRC_TYPE_NORMAL]; 22 23 mrc->buf = fsp_get_nvs_data(gd->arch.hob_list, &mrc->len); 24 } 25 26 return 0; 27 } 28 29 /* 30 * This function looks for the highest region of memory lower than 4GB which 31 * has enough space for U-Boot where U-Boot is aligned on a page boundary. 32 * It overrides the default implementation found elsewhere which simply 33 * picks the end of ram, wherever that may be. The location of the stack, 34 * the relocation address, and how far U-Boot is moved by relocation are 35 * set in the global data structure. 36 */ board_get_usable_ram_top(ulong total_size)37ulong board_get_usable_ram_top(ulong total_size) 38 { 39 return fsp_get_usable_lowmem_top(gd->arch.hob_list); 40 } 41