blob: 8000162573457de76a399e0016bf66c043bea6d8 [file] [log] [blame]
* This file is part of the coreboot project.
* Copyright (C) 2003 Eric Biederman
* Copyright (C) 2005 Steve Magnani
* Copyright (C) 2008-2009 coresystems GmbH
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <console/console.h>
#include <cpu/cpu.h>
#include <boot/tables.h>
#include <boot/coreboot_tables.h>
#include <arch/pirq_routing.h>
#include <arch/smp/mpspec.h>
#include <arch/acpi.h>
#include <string.h>
#include <cpu/x86/multiboot.h>
#include "coreboot_table.h"
#include <cbmem.h>
#include <lib.h>
uint64_t high_tables_base = 0;
uint64_t high_tables_size;
void cbmem_arch_init(void)
/* defined in gdt.c */
struct lb_memory *write_tables(void)
unsigned long low_table_start, low_table_end;
unsigned long rom_table_start, rom_table_end;
/* Even if high tables are configured, some tables are copied both to
* the low and the high area, so payloads and OSes don't need to know
* about the high tables.
unsigned long high_table_pointer;
if (!high_tables_base) {
printk_err("ERROR: High Tables Base is not set.\n");
// Are there any boards without?
// Stepan thinks we should die() here!
printk_debug("High Tables Base is %llx.\n", high_tables_base);
rom_table_start = 0xf0000;
rom_table_end = 0xf0000;
/* Start low addr at 0x500, so we don't run into conflicts with the BDA
* in case our data structures grow beyound 0x400. Only multiboot, GDT
* and the coreboot table use low_tables.
low_table_start = 0;
low_table_end = 0x500;
#define MAX_PIRQ_TABLE_SIZE (4 * 1024)
/* This table must be between 0x0f0000 and 0x100000 */
rom_table_end = write_pirq_routing_table(rom_table_end);
rom_table_end = ALIGN(rom_table_end, 1024);
/* And add a high table version for those payloads that
* want to live in the F segment
high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_PIRQ, MAX_PIRQ_TABLE_SIZE);
if (high_table_pointer) {
unsigned long new_high_table_pointer;
new_high_table_pointer = write_pirq_routing_table(high_table_pointer);
// FIXME make pirq table code intelligent enough to know how
// much space it's going to need.
if (new_high_table_pointer > (high_table_pointer + MAX_PIRQ_TABLE_SIZE)) {
printk(BIOS_ERR, "ERROR: Increase PIRQ size.\n");
printk(BIOS_DEBUG, "PIRQ table: %ld bytes.\n",
new_high_table_pointer - high_table_pointer);
#define MAX_MP_TABLE_SIZE (4 * 1024)
/* The smp table must be in 0-1K, 639K-640K, or 960K-1M */
rom_table_end = write_smp_table(rom_table_end);
rom_table_end = ALIGN(rom_table_end, 1024);
high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_MPTABLE, MAX_MP_TABLE_SIZE);
if (high_table_pointer) {
unsigned long new_high_table_pointer;
new_high_table_pointer = write_smp_table(high_table_pointer);
// FIXME make mp table code intelligent enough to know how
// much space it's going to need.
if (new_high_table_pointer > (high_table_pointer + MAX_MP_TABLE_SIZE)) {
printk(BIOS_ERR, "ERROR: Increase MP table size.\n");
printk(BIOS_DEBUG, "MP table: %ld bytes.\n",
new_high_table_pointer - high_table_pointer);
#define MAX_ACPI_SIZE (47 * 1024)
/* Write ACPI tables to F segment and high tables area */
/* Ok, this is a bit hacky still, because some day we want to have this
* completely dynamic. But right now we are setting fixed sizes.
* It's probably still better than the old high_table_base code because
* now at least we know when we have an overflow in the area.
* We want to use 1MB - 64K for Resume backup. We use 512B for TOC and
* 512 byte for GDT, 4K for PIRQ and 4K for MP table and 8KB for the
* coreboot table. This leaves us with 47KB for all of ACPI. Let's see
* how far we get.
high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_ACPI, MAX_ACPI_SIZE);
if (high_table_pointer) {
unsigned long acpi_start = high_table_pointer;
unsigned long new_high_table_pointer;
rom_table_end = ALIGN(rom_table_end, 16);
new_high_table_pointer = write_acpi_tables(high_table_pointer);
if (new_high_table_pointer > ( high_table_pointer + MAX_ACPI_SIZE)) {
printk(BIOS_ERR, "ERROR: Increase ACPI size\n");
printk(BIOS_DEBUG, "ACPI tables: %ld bytes.\n",
new_high_table_pointer - high_table_pointer);
/* Now we need to create a low table copy of the RSDP. */
/* First we look for the high table RSDP */
while (acpi_start < new_high_table_pointer) {
if (memcmp(((acpi_rsdp_t *)acpi_start)->signature, RSDP_SIG, 8) == 0) {
/* Now, if we found the RSDP, we take the RSDT and XSDT pointer
* from it in order to write the low RSDP
if (acpi_start < new_high_table_pointer) {
acpi_rsdp_t *low_rsdp = (acpi_rsdp_t *)rom_table_end,
*high_rsdp = (acpi_rsdp_t *)acpi_start;
(acpi_rsdt_t *)(high_rsdp->rsdt_address),
(acpi_xsdt_t *)(high_rsdp->xsdt_address));
} else {
printk_err("ERROR: Didn't find RSDP in high table.\n");
rom_table_end = ALIGN(rom_table_end + sizeof(acpi_rsdp_t), 16);
} else {
rom_table_end = write_acpi_tables(rom_table_end);
rom_table_end = ALIGN(rom_table_end, 1024);
/* The Multiboot information structure */
rom_table_end = write_multiboot_info(
low_table_start, low_table_end,
rom_table_start, rom_table_end);
#define MAX_COREBOOT_TABLE_SIZE (8 * 1024)
high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE, MAX_COREBOOT_TABLE_SIZE);
if (high_table_pointer) {
unsigned long new_high_table_pointer;
/* Also put a forwarder entry into 0-4K */
new_high_table_pointer = write_coreboot_table(low_table_start, low_table_end,
high_tables_base, high_table_pointer);
if (new_high_table_pointer > (high_table_pointer +
printk_err("%s: coreboot table didn't fit (%lx)\n",
__func__, new_high_table_pointer -
printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n",
new_high_table_pointer - high_table_pointer);
} else {
/* The coreboot table must be in 0-4K or 960K-1M */
write_coreboot_table(low_table_start, low_table_end,
rom_table_start, rom_table_end);
/* Let's prepare the ACPI S3 Resume area now already, so we can rely on
* it begin there during reboot time. We don't need the pointer, nor
* the result right now. If it fails, ACPI resume will be disabled.
cbmem_add(CBMEM_ID_RESUME, 1024 * (1024-64));
// Remove before sending upstream
return get_lb_mem();