1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
4  */
5 
6 #include <init.h>
7 #include <asm/fsp/fsp_support.h>
8 #include <asm/global_data.h>
9 
dram_init(void)10 int dram_init(void)
11 {
12 	int ret;
13 
14 	/* The FSP has already set up DRAM, so grab the info we need */
15 	ret = fsp_scan_for_ram_size();
16 	if (ret)
17 		return ret;
18 
19 	if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE)) {
20 		struct mrc_output *mrc = &gd->arch.mrc[MRC_TYPE_NORMAL];
21 
22 		mrc->buf = fsp_get_nvs_data(gd->arch.hob_list, &mrc->len);
23 	}
24 
25 	return 0;
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  */
board_get_usable_ram_top(phys_size_t total_size)36 phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
37 {
38 	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
39 }
40