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)11 int 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)37 ulong board_get_usable_ram_top(ulong total_size)
38 {
39 	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
40 }
41