1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
7 #include <env_internal.h>
10 DECLARE_GLOBAL_DATA_PTR;
12 unsigned int install_e820_map(unsigned int max_entries,
13 struct e820_entry *entries)
16 entries[0].size = ISA_START_ADDRESS;
17 entries[0].type = E820_RAM;
19 entries[1].addr = ISA_START_ADDRESS;
20 entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS;
21 entries[1].type = E820_RESERVED;
24 * since we use memalign(malloc) to allocate high memory for
25 * storing ACPI tables, we need to reserve them in e820 tables,
26 * otherwise kernel will reclaim them and data will be corrupted
28 entries[2].addr = ISA_END_ADDRESS;
29 entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS;
30 entries[2].type = E820_RAM;
32 /* for simplicity, reserve entire malloc space */
33 entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN;
34 entries[3].size = TOTAL_MALLOC_LEN;
35 entries[3].type = E820_RESERVED;
37 entries[4].addr = gd->relocaddr;
38 entries[4].size = gd->ram_size - gd->relocaddr;
39 entries[4].type = E820_RESERVED;
41 entries[5].addr = CONFIG_PCIE_ECAM_BASE;
42 entries[5].size = CONFIG_PCIE_ECAM_SIZE;
43 entries[5].type = E820_RESERVED;