1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com> 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <common.h> 8*4882a593Smuzhiyun #include <asm/e820.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR; 11*4882a593Smuzhiyun install_e820_map(unsigned max_entries,struct e820entry * entries)12*4882a593Smuzhiyununsigned install_e820_map(unsigned max_entries, struct e820entry *entries) 13*4882a593Smuzhiyun { 14*4882a593Smuzhiyun entries[0].addr = 0; 15*4882a593Smuzhiyun entries[0].size = ISA_START_ADDRESS; 16*4882a593Smuzhiyun entries[0].type = E820_RAM; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun entries[1].addr = ISA_START_ADDRESS; 19*4882a593Smuzhiyun entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS; 20*4882a593Smuzhiyun entries[1].type = E820_RESERVED; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* 23*4882a593Smuzhiyun * since we use memalign(malloc) to allocate high memory for 24*4882a593Smuzhiyun * storing ACPI tables, we need to reserve them in e820 tables, 25*4882a593Smuzhiyun * otherwise kernel will reclaim them and data will be corrupted 26*4882a593Smuzhiyun */ 27*4882a593Smuzhiyun entries[2].addr = ISA_END_ADDRESS; 28*4882a593Smuzhiyun entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS; 29*4882a593Smuzhiyun entries[2].type = E820_RAM; 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* for simplicity, reserve entire malloc space */ 32*4882a593Smuzhiyun entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN; 33*4882a593Smuzhiyun entries[3].size = TOTAL_MALLOC_LEN; 34*4882a593Smuzhiyun entries[3].type = E820_RESERVED; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun entries[4].addr = gd->relocaddr; 37*4882a593Smuzhiyun entries[4].size = gd->ram_size - gd->relocaddr; 38*4882a593Smuzhiyun entries[4].type = E820_RESERVED; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun entries[5].addr = CONFIG_PCIE_ECAM_BASE; 41*4882a593Smuzhiyun entries[5].size = CONFIG_PCIE_ECAM_SIZE; 42*4882a593Smuzhiyun entries[5].type = E820_RESERVED; 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun return 6; 45*4882a593Smuzhiyun } 46