mirror of
https://github.com/AsahiLinux/u-boot
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b2e02d2865
Implement minimum required functions for the basic support to queensbay platform and crownbay board. Currently the implementation is to call fsp_init() in the car_init(). We may move that call to cpu_init_f() in the future. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/arch/fsp/fsp_support.h>
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#include <asm/e820.h>
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#include <asm/post.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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phys_size_t ram_size = 0;
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union hob_pointers_t hob;
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hob.raw = gd->arch.hob_list;
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while (!END_OF_HOB(hob)) {
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if (hob.hdr->type == HOB_TYPE_RES_DESC) {
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if (hob.res_desc->type == RES_SYS_MEM ||
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hob.res_desc->type == RES_MEM_RESERVED) {
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ram_size += hob.res_desc->len;
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}
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}
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hob.raw = GET_NEXT_HOB(hob);
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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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void 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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}
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/*
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* This function looks for the highest region of memory lower than 4GB which
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* has enough space for U-Boot where U-Boot is aligned on a page boundary.
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* It overrides the default implementation found elsewhere which simply
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* picks the end of ram, wherever that may be. The location of the stack,
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* the relocation address, and how far U-Boot is moved by relocation are
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* set in the global data structure.
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*/
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ulong board_get_usable_ram_top(ulong total_size)
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{
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return get_usable_lowmem_top(gd->arch.hob_list);
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}
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unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
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{
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unsigned num_entries = 0;
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union hob_pointers_t hob;
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hob.raw = gd->arch.hob_list;
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while (!END_OF_HOB(hob)) {
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if (hob.hdr->type == HOB_TYPE_RES_DESC) {
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entries[num_entries].addr = hob.res_desc->phys_start;
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entries[num_entries].size = hob.res_desc->len;
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if (hob.res_desc->type == RES_SYS_MEM)
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entries[num_entries].type = E820_RAM;
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else if (hob.res_desc->type == RES_MEM_RESERVED)
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entries[num_entries].type = E820_RESERVED;
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}
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hob.raw = GET_NEXT_HOB(hob);
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num_entries++;
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}
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return num_entries;
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}
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