1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
9 DECLARE_GLOBAL_DATA_PTR;
12 * Install a default e820 table with 4 entries as follows:
14 * 0x000000-0x0a0000 Useable RAM
15 * 0x0a0000-0x100000 Reserved for ISA
16 * 0x100000-gd->ram_size Useable RAM
17 * CONFIG_PCIE_ECAM_BASE PCIe ECAM
19 __weak unsigned int install_e820_map(unsigned int max_entries,
20 struct e820_entry *entries)
23 entries[0].size = ISA_START_ADDRESS;
24 entries[0].type = E820_RAM;
25 entries[1].addr = ISA_START_ADDRESS;
26 entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS;
27 entries[1].type = E820_RESERVED;
28 entries[2].addr = ISA_END_ADDRESS;
29 entries[2].size = gd->ram_size - ISA_END_ADDRESS;
30 entries[2].type = E820_RAM;
31 entries[3].addr = CONFIG_PCIE_ECAM_BASE;
32 entries[3].size = CONFIG_PCIE_ECAM_SIZE;
33 entries[3].type = E820_RESERVED;