mirror of
https://github.com/brain-hackers/u-boot-brain
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e9de4a7cd3
Most of the DRAM functionality can be shared between FSP1 and FSP2. Move it into a shared file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: rebase the patch against u-boot-x86/next to get it applied cleanly] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <handoff.h>
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#include <asm/fsp/fsp_support.h>
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#include <asm/e820.h>
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#include <asm/mrccache.h>
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#include <asm/post.h>
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DECLARE_GLOBAL_DATA_PTR;
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int fsp_scan_for_ram_size(void)
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{
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phys_size_t ram_size = 0;
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const struct hob_header *hdr;
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struct hob_res_desc *res_desc;
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hdr = gd->arch.hob_list;
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while (!end_of_hob(hdr)) {
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if (hdr->type == HOB_TYPE_RES_DESC) {
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res_desc = (struct hob_res_desc *)hdr;
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if (res_desc->type == RES_SYS_MEM ||
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res_desc->type == RES_MEM_RESERVED)
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ram_size += res_desc->len;
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}
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hdr = get_next_hob(hdr);
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}
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gd->ram_size = ram_size;
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post_code(POST_DRAM);
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return 0;
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};
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int dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = 0;
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gd->bd->bi_dram[0].size = gd->ram_size;
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return 0;
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}
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unsigned int install_e820_map(unsigned int max_entries,
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struct e820_entry *entries)
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{
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unsigned int num_entries = 0;
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const struct hob_header *hdr;
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struct hob_res_desc *res_desc;
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hdr = gd->arch.hob_list;
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while (!end_of_hob(hdr)) {
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if (hdr->type == HOB_TYPE_RES_DESC) {
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res_desc = (struct hob_res_desc *)hdr;
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entries[num_entries].addr = res_desc->phys_start;
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entries[num_entries].size = res_desc->len;
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if (res_desc->type == RES_SYS_MEM)
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entries[num_entries].type = E820_RAM;
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else if (res_desc->type == RES_MEM_RESERVED)
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entries[num_entries].type = E820_RESERVED;
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num_entries++;
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}
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hdr = get_next_hob(hdr);
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}
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/* Mark PCIe ECAM address range as reserved */
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entries[num_entries].addr = CONFIG_PCIE_ECAM_BASE;
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entries[num_entries].size = CONFIG_PCIE_ECAM_SIZE;
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entries[num_entries].type = E820_RESERVED;
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num_entries++;
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#ifdef CONFIG_HAVE_ACPI_RESUME
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/*
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* Everything between U-Boot's stack and ram top needs to be
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* reserved in order for ACPI S3 resume to work.
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*/
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entries[num_entries].addr = gd->start_addr_sp - CONFIG_STACK_SIZE;
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entries[num_entries].size = gd->ram_top - gd->start_addr_sp +
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CONFIG_STACK_SIZE;
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entries[num_entries].type = E820_RESERVED;
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num_entries++;
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#endif
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return num_entries;
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}
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