| Bin Meng | a489963 | 2015-10-07 20:19:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <asm/e820.h> |
| 9 | |
| 10 | DECLARE_GLOBAL_DATA_PTR; |
| 11 | |
| 12 | /* |
| 13 | * Install a default e820 table with 4 entries as follows: |
| 14 | * |
| 15 | * 0x000000-0x0a0000 Useable RAM |
| 16 | * 0x0a0000-0x100000 Reserved for ISA |
| 17 | * 0x100000-gd->ram_size Useable RAM |
| 18 | * CONFIG_PCIE_ECAM_BASE PCIe ECAM |
| 19 | */ |
| 20 | __weak unsigned install_e820_map(unsigned max_entries, |
| 21 | struct e820entry *entries) |
| 22 | { |
| 23 | entries[0].addr = 0; |
| 24 | entries[0].size = ISA_START_ADDRESS; |
| 25 | entries[0].type = E820_RAM; |
| 26 | entries[1].addr = ISA_START_ADDRESS; |
| 27 | entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS; |
| 28 | entries[1].type = E820_RESERVED; |
| 29 | entries[2].addr = ISA_END_ADDRESS; |
| 30 | entries[2].size = gd->ram_size - ISA_END_ADDRESS; |
| 31 | entries[2].type = E820_RAM; |
| 32 | entries[3].addr = CONFIG_PCIE_ECAM_BASE; |
| 33 | entries[3].size = CONFIG_PCIE_ECAM_SIZE; |
| 34 | entries[3].type = E820_RESERVED; |
| 35 | |
| 36 | return 4; |
| 37 | } |