[thirdparty/u-boot.git] / arch / x86 / lib / fsp1 / fsp_dram.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
 */

#include <common.h>
#include <init.h>
#include <asm/fsp/fsp_support.h>
#include <asm/global_data.h>

int dram_init(void)
{
	int ret;

	/* The FSP has already set up DRAM, so grab the info we need */
	ret = fsp_scan_for_ram_size();
	if (ret)
		return ret;

	if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE)) {
		struct mrc_output *mrc = &gd->arch.mrc[MRC_TYPE_NORMAL];

		mrc->buf = fsp_get_nvs_data(gd->arch.hob_list, &mrc->len);
	}

	return 0;
}

/*
 * This function looks for the highest region of memory lower than 4GB which
 * has enough space for U-Boot where U-Boot is aligned on a page boundary.
 * It overrides the default implementation found elsewhere which simply
 * picks the end of ram, wherever that may be. The location of the stack,
 * the relocation address, and how far U-Boot is moved by relocation are
 * set in the global data structure.
 */
phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
{
	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
b2e02d28 BM	2	/*
b2e02d28 BM	3	* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
b2e02d28 BM	4	*/
b2e02d28 BM	5
d678a59d	6	#include <common.h>
691d719d	7	#include <init.h>
e9de4a7c	8	#include <asm/fsp/fsp_support.h>
401d1c4f	9	#include <asm/global_data.h>
b2e02d28 BM	10
	11	int dram_init(void)
	12	{
e9de4a7c	13	int ret;
b2e02d28	14
e9de4a7c SG	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;
b2e02d28	19
515e8174 SG	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	}
ff1e18af	25
b2e02d28 BM	26	return 0;
	27	}
	28
b2e02d28 BM	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	*/
d768dd88	37	phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
b2e02d28	38	{
255fd5ca	39	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
b2e02d28	40	}