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 <asm/fsp/fsp_support.h> 8 dram_init(void)9int dram_init(void) 10 { 11 int ret; 12 13 /* The FSP has already set up DRAM, so grab the info we need */ 14 ret = fsp_scan_for_ram_size(); 15 if (ret) 16 return ret; 17 18 if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE)) 19 gd->arch.mrc_output = fsp_get_nvs_data(gd->arch.hob_list, 20 &gd->arch.mrc_output_len); 21 22 return 0; 23 } 24 25 /* 26 * This function looks for the highest region of memory lower than 4GB which 27 * has enough space for U-Boot where U-Boot is aligned on a page boundary. 28 * It overrides the default implementation found elsewhere which simply 29 * picks the end of ram, wherever that may be. The location of the stack, 30 * the relocation address, and how far U-Boot is moved by relocation are 31 * set in the global data structure. 32 */ board_get_usable_ram_top(ulong total_size)33ulong board_get_usable_ram_top(ulong total_size) 34 { 35 return fsp_get_usable_lowmem_top(gd->arch.hob_list); 36 } 37