2 * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
4 * SPDX-License-Identifier: GPL-2.0+
10 unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
13 entries[0].size = ISA_START_ADDRESS;
14 entries[0].type = E820_RAM;
16 entries[1].addr = ISA_START_ADDRESS;
17 entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS;
18 entries[1].type = E820_RESERVED;
21 * since we use memalign(malloc) to allocate high memory for
22 * storing ACPI tables, we need to reserve them in e820 tables,
23 * otherwise kernel will reclaim them and data will be corrupted
25 entries[2].addr = ISA_END_ADDRESS;
26 entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS;
27 entries[2].type = E820_RAM;
29 /* for simplicity, reserve entire malloc space */
30 entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN;
31 entries[3].size = TOTAL_MALLOC_LEN;
32 entries[3].type = E820_RESERVED;
34 entries[4].addr = gd->relocaddr;
35 entries[4].size = gd->ram_size - gd->relocaddr;
36 entries[4].type = E820_RESERVED;
38 entries[5].addr = CONFIG_PCIE_ECAM_BASE;
39 entries[5].size = CONFIG_PCIE_ECAM_SIZE;
40 entries[5].type = E820_RESERVED;