]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/x86/lib/fsp/fsp_dram.c
2 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
4 * SPDX-License-Identifier: GPL-2.0+
8 #include <asm/fsp/fsp_support.h>
10 #include <asm/mrccache.h>
13 DECLARE_GLOBAL_DATA_PTR
;
17 phys_size_t ram_size
= 0;
18 const struct hob_header
*hdr
;
19 struct hob_res_desc
*res_desc
;
21 hdr
= gd
->arch
.hob_list
;
22 while (!end_of_hob(hdr
)) {
23 if (hdr
->type
== HOB_TYPE_RES_DESC
) {
24 res_desc
= (struct hob_res_desc
*)hdr
;
25 if (res_desc
->type
== RES_SYS_MEM
||
26 res_desc
->type
== RES_MEM_RESERVED
) {
27 ram_size
+= res_desc
->len
;
30 hdr
= get_next_hob(hdr
);
33 gd
->ram_size
= ram_size
;
36 #ifdef CONFIG_ENABLE_MRC_CACHE
37 gd
->arch
.mrc_output
= fsp_get_nvs_data(gd
->arch
.hob_list
,
38 &gd
->arch
.mrc_output_len
);
44 int dram_init_banksize(void)
46 gd
->bd
->bi_dram
[0].start
= 0;
47 gd
->bd
->bi_dram
[0].size
= gd
->ram_size
;
53 * This function looks for the highest region of memory lower than 4GB which
54 * has enough space for U-Boot where U-Boot is aligned on a page boundary.
55 * It overrides the default implementation found elsewhere which simply
56 * picks the end of ram, wherever that may be. The location of the stack,
57 * the relocation address, and how far U-Boot is moved by relocation are
58 * set in the global data structure.
60 ulong
board_get_usable_ram_top(ulong total_size
)
62 return fsp_get_usable_lowmem_top(gd
->arch
.hob_list
);
65 unsigned install_e820_map(unsigned max_entries
, struct e820entry
*entries
)
67 unsigned num_entries
= 0;
68 const struct hob_header
*hdr
;
69 struct hob_res_desc
*res_desc
;
71 hdr
= gd
->arch
.hob_list
;
73 while (!end_of_hob(hdr
)) {
74 if (hdr
->type
== HOB_TYPE_RES_DESC
) {
75 res_desc
= (struct hob_res_desc
*)hdr
;
76 entries
[num_entries
].addr
= res_desc
->phys_start
;
77 entries
[num_entries
].size
= res_desc
->len
;
79 if (res_desc
->type
== RES_SYS_MEM
)
80 entries
[num_entries
].type
= E820_RAM
;
81 else if (res_desc
->type
== RES_MEM_RESERVED
)
82 entries
[num_entries
].type
= E820_RESERVED
;
86 hdr
= get_next_hob(hdr
);
89 /* Mark PCIe ECAM address range as reserved */
90 entries
[num_entries
].addr
= CONFIG_PCIE_ECAM_BASE
;
91 entries
[num_entries
].size
= CONFIG_PCIE_ECAM_SIZE
;
92 entries
[num_entries
].type
= E820_RESERVED
;