u-boot/arch/x86/cpu/qemu/e820.c
Miao Yan 494ec0d093 x86: qemu: rename qemu/acpi_table.c
Rename qemu/acpi_table.c to qemu/e820.c, because ACPI stuff is moved
to qfw core, this file only contains code for installing e820 table.

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-05-23 15:18:00 +08:00

43 lines
1.2 KiB
C

/*
* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/e820.h>
unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
{
entries[0].addr = 0;
entries[0].size = ISA_START_ADDRESS;
entries[0].type = E820_RAM;
entries[1].addr = ISA_START_ADDRESS;
entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS;
entries[1].type = E820_RESERVED;
/*
* since we use memalign(malloc) to allocate high memory for
* storing ACPI tables, we need to reserve them in e820 tables,
* otherwise kernel will reclaim them and data will be corrupted
*/
entries[2].addr = ISA_END_ADDRESS;
entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS;
entries[2].type = E820_RAM;
/* for simplicity, reserve entire malloc space */
entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN;
entries[3].size = TOTAL_MALLOC_LEN;
entries[3].type = E820_RESERVED;
entries[4].addr = gd->relocaddr;
entries[4].size = gd->ram_size - gd->relocaddr;
entries[4].type = E820_RESERVED;
entries[5].addr = CONFIG_PCIE_ECAM_BASE;
entries[5].size = CONFIG_PCIE_ECAM_SIZE;
entries[5].type = E820_RESERVED;
return 6;
}