]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - arch/x86/cpu/qemu/e820.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * QEMU x86 specific E820 table generation
5 * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
6 * (C) Copyright 2019 Bin Meng <bmeng.cn@gmail.com>
10 #include <env_internal.h>
13 #include <asm/arch/qemu.h>
15 DECLARE_GLOBAL_DATA_PTR
;
17 unsigned int install_e820_map(unsigned int max_entries
,
18 struct e820_entry
*entries
)
24 entries
[n
].size
= ISA_START_ADDRESS
;
25 entries
[n
].type
= E820_RAM
;
28 entries
[n
].addr
= ISA_START_ADDRESS
;
29 entries
[n
].size
= ISA_END_ADDRESS
- ISA_START_ADDRESS
;
30 entries
[n
].type
= E820_RESERVED
;
34 * since we use memalign(malloc) to allocate high memory for
35 * storing ACPI tables, we need to reserve them in e820 tables,
36 * otherwise kernel will reclaim them and data will be corrupted
38 entries
[n
].addr
= ISA_END_ADDRESS
;
39 entries
[n
].size
= gd
->relocaddr
- TOTAL_MALLOC_LEN
- ISA_END_ADDRESS
;
40 entries
[n
].type
= E820_RAM
;
43 /* for simplicity, reserve entire malloc space */
44 entries
[n
].addr
= gd
->relocaddr
- TOTAL_MALLOC_LEN
;
45 entries
[n
].size
= TOTAL_MALLOC_LEN
;
46 entries
[n
].type
= E820_RESERVED
;
49 entries
[n
].addr
= gd
->relocaddr
;
50 entries
[n
].size
= qemu_get_low_memory_size() - gd
->relocaddr
;
51 entries
[n
].type
= E820_RESERVED
;
54 entries
[n
].addr
= CONFIG_PCIE_ECAM_BASE
;
55 entries
[n
].size
= CONFIG_PCIE_ECAM_SIZE
;
56 entries
[n
].type
= E820_RESERVED
;
59 high_mem_size
= qemu_get_high_memory_size();
61 entries
[n
].addr
= SZ_4G
;
62 entries
[n
].size
= high_mem_size
;
63 entries
[n
].type
= E820_RAM
;