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/*
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/fsp/fsp_support.h>
#include <asm/e820.h>
#include <asm/mrccache.h>
#include <asm/post.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
phys_size_t ram_size = 0;
const struct hob_header *hdr;
struct hob_res_desc *res_desc;
hdr = gd->arch.hob_list;
while (!end_of_hob(hdr)) {
if (hdr->type == HOB_TYPE_RES_DESC) {
res_desc = (struct hob_res_desc *)hdr;
if (res_desc->type == RES_SYS_MEM ||
res_desc->type == RES_MEM_RESERVED) {
ram_size += res_desc->len;
}
}
hdr = get_next_hob(hdr);
}
gd->ram_size = ram_size;
post_code(POST_DRAM);
#ifdef CONFIG_ENABLE_MRC_CACHE
gd->arch.mrc_output = fsp_get_nvs_data(gd->arch.hob_list,
&gd->arch.mrc_output_len);
#endif
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = 0;
gd->bd->bi_dram[0].size = gd->ram_size;
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.
*/
ulong board_get_usable_ram_top(ulong total_size)
{
return fsp_get_usable_lowmem_top(gd->arch.hob_list);
}
unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
{
unsigned num_entries = 0;
const struct hob_header *hdr;
struct hob_res_desc *res_desc;
hdr = gd->arch.hob_list;
while (!end_of_hob(hdr)) {
if (hdr->type == HOB_TYPE_RES_DESC) {
res_desc = (struct hob_res_desc *)hdr;
entries[num_entries].addr = res_desc->phys_start;
entries[num_entries].size = res_desc->len;
if (res_desc->type == RES_SYS_MEM)
entries[num_entries].type = E820_RAM;
else if (res_desc->type == RES_MEM_RESERVED)
entries[num_entries].type = E820_RESERVED;
num_entries++;
}
hdr = get_next_hob(hdr);
}
/* Mark PCIe ECAM address range as reserved */
entries[num_entries].addr = CONFIG_PCIE_ECAM_BASE;
entries[num_entries].size = CONFIG_PCIE_ECAM_SIZE;
entries[num_entries].type = E820_RESERVED;
num_entries++;
#ifdef CONFIG_HAVE_ACPI_RESUME
/*
* Everything between U-Boot's stack and ram top needs to be
* reserved in order for ACPI S3 resume to work.
*/
entries[num_entries].addr = gd->start_addr_sp - CONFIG_STACK_SIZE;
entries[num_entries].size = gd->ram_top - gd->start_addr_sp + \
CONFIG_STACK_SIZE;
entries[num_entries].type = E820_RESERVED;
num_entries++;
#endif
return num_entries;
}
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