2 * This file is part of the coreboot project.
4 * Copyright (C) 2003 Eric Biederman
5 * Copyright (C) 2005 Steve Magnani
6 * Copyright (C) 2008-2009 coresystems GmbH
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <console/console.h>
24 #include <boot/tables.h>
25 #include <boot/coreboot_tables.h>
26 #include <arch/coreboot_tables.h>
27 #include <arch/pirq_routing.h>
28 #include <arch/smp/mpspec.h>
29 #include <arch/acpi.h>
31 #include <cpu/x86/multiboot.h>
36 uint64_t high_tables_base = 0;
37 uint64_t high_tables_size;
39 void cbmem_arch_init(void)
41 /* defined in gdt.c */
45 struct lb_memory *write_tables(void)
47 unsigned long low_table_start, low_table_end;
48 unsigned long rom_table_start, rom_table_end;
50 /* Even if high tables are configured, some tables are copied both to
51 * the low and the high area, so payloads and OSes don't need to know
52 * about the high tables.
54 unsigned long high_table_pointer;
56 if (!high_tables_base) {
57 printk(BIOS_ERR, "ERROR: High Tables Base is not set.\n");
58 // Are there any boards without?
59 // Stepan thinks we should die() here!
62 printk(BIOS_DEBUG, "High Tables Base is %llx.\n", high_tables_base);
64 rom_table_start = 0xf0000;
65 rom_table_end = 0xf0000;
67 /* Start low addr at 0x500, so we don't run into conflicts with the BDA
68 * in case our data structures grow beyound 0x400. Only multiboot, GDT
69 * and the coreboot table use low_tables.
72 low_table_end = 0x500;
74 #if CONFIG_GENERATE_PIRQ_TABLE == 1
75 #define MAX_PIRQ_TABLE_SIZE (4 * 1024)
78 /* This table must be between 0x0f0000 and 0x100000 */
79 rom_table_end = write_pirq_routing_table(rom_table_end);
80 rom_table_end = ALIGN(rom_table_end, 1024);
82 /* And add a high table version for those payloads that
83 * want to live in the F segment
85 high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_PIRQ, MAX_PIRQ_TABLE_SIZE);
86 if (high_table_pointer) {
87 unsigned long new_high_table_pointer;
88 new_high_table_pointer = write_pirq_routing_table(high_table_pointer);
89 // FIXME make pirq table code intelligent enough to know how
90 // much space it's going to need.
91 if (new_high_table_pointer > (high_table_pointer + MAX_PIRQ_TABLE_SIZE)) {
92 printk(BIOS_ERR, "ERROR: Increase PIRQ size.\n");
94 printk(BIOS_DEBUG, "PIRQ table: %ld bytes.\n",
95 new_high_table_pointer - high_table_pointer);
100 #if CONFIG_GENERATE_MP_TABLE == 1
101 #define MAX_MP_TABLE_SIZE (4 * 1024)
104 /* The smp table must be in 0-1K, 639K-640K, or 960K-1M */
105 rom_table_end = write_smp_table(rom_table_end);
106 rom_table_end = ALIGN(rom_table_end, 1024);
108 high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_MPTABLE, MAX_MP_TABLE_SIZE);
109 if (high_table_pointer) {
110 unsigned long new_high_table_pointer;
111 new_high_table_pointer = write_smp_table(high_table_pointer);
112 // FIXME make mp table code intelligent enough to know how
113 // much space it's going to need.
114 if (new_high_table_pointer > (high_table_pointer + MAX_MP_TABLE_SIZE)) {
115 printk(BIOS_ERR, "ERROR: Increase MP table size.\n");
118 printk(BIOS_DEBUG, "MP table: %ld bytes.\n",
119 new_high_table_pointer - high_table_pointer);
121 #endif /* CONFIG_GENERATE_MP_TABLE */
123 #if CONFIG_GENERATE_ACPI_TABLES == 1
124 #define MAX_ACPI_SIZE (45 * 1024)
127 /* Write ACPI tables to F segment and high tables area */
129 /* Ok, this is a bit hacky still, because some day we want to have this
130 * completely dynamic. But right now we are setting fixed sizes.
131 * It's probably still better than the old high_table_base code because
132 * now at least we know when we have an overflow in the area.
134 * We want to use 1MB - 64K for Resume backup. We use 512B for TOC and
135 * 512 byte for GDT, 4K for PIRQ and 4K for MP table and 8KB for the
136 * coreboot table. This leaves us with 47KB for all of ACPI. Let's see
139 high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_ACPI, MAX_ACPI_SIZE);
140 if (high_table_pointer) {
141 unsigned long acpi_start = high_table_pointer;
142 unsigned long new_high_table_pointer;
144 rom_table_end = ALIGN(rom_table_end, 16);
145 new_high_table_pointer = write_acpi_tables(high_table_pointer);
146 if (new_high_table_pointer > ( high_table_pointer + MAX_ACPI_SIZE)) {
147 printk(BIOS_ERR, "ERROR: Increase ACPI size\n");
149 printk(BIOS_DEBUG, "ACPI tables: %ld bytes.\n",
150 new_high_table_pointer - high_table_pointer);
152 /* Now we need to create a low table copy of the RSDP. */
154 /* First we look for the high table RSDP */
155 while (acpi_start < new_high_table_pointer) {
156 if (memcmp(((acpi_rsdp_t *)acpi_start)->signature, RSDP_SIG, 8) == 0) {
162 /* Now, if we found the RSDP, we take the RSDT and XSDT pointer
163 * from it in order to write the low RSDP
165 if (acpi_start < new_high_table_pointer) {
166 acpi_rsdp_t *low_rsdp = (acpi_rsdp_t *)rom_table_end,
167 *high_rsdp = (acpi_rsdp_t *)acpi_start;
169 acpi_write_rsdp(low_rsdp,
170 (acpi_rsdt_t *)(high_rsdp->rsdt_address),
171 (acpi_xsdt_t *)((unsigned long)high_rsdp->xsdt_address));
173 printk(BIOS_ERR, "ERROR: Didn't find RSDP in high table.\n");
175 rom_table_end = ALIGN(rom_table_end + sizeof(acpi_rsdp_t), 16);
177 rom_table_end = write_acpi_tables(rom_table_end);
178 rom_table_end = ALIGN(rom_table_end, 1024);
182 #define MAX_SMBIOS_SIZE 2048
183 #if CONFIG_GENERATE_SMBIOS_TABLES
184 high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_SMBIOS, MAX_SMBIOS_SIZE);
185 if (high_table_pointer) {
186 unsigned long new_high_table_pointer;
188 new_high_table_pointer = smbios_write_tables(high_table_pointer);
189 rom_table_end = ALIGN(rom_table_end, 16);
190 memcpy((void *)rom_table_end, (void *)high_table_pointer, sizeof(struct smbios_entry));
191 rom_table_end += sizeof(struct smbios_entry);
193 if (new_high_table_pointer > ( high_table_pointer + MAX_SMBIOS_SIZE)) {
194 printk(BIOS_ERR, "ERROR: Increase SMBIOS size\n");
196 printk(BIOS_DEBUG, "SMBIOS tables: %ld bytes.\n",
197 new_high_table_pointer - high_table_pointer);
199 unsigned long new_rom_table_end = smbios_write_tables(rom_table_end);
200 printk(BIOS_DEBUG, "SMBIOS size %ld bytes\n", new_rom_table_end - rom_table_end);
201 rom_table_end = ALIGN(new_rom_table_end, 16);
205 #define MAX_COREBOOT_TABLE_SIZE (32 * 1024)
208 high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE, MAX_COREBOOT_TABLE_SIZE);
210 if (high_table_pointer) {
211 unsigned long new_high_table_pointer;
213 /* Also put a forwarder entry into 0-4K */
214 new_high_table_pointer = write_coreboot_table(low_table_start, low_table_end,
215 high_tables_base, high_table_pointer);
217 if (new_high_table_pointer > (high_table_pointer +
218 MAX_COREBOOT_TABLE_SIZE))
219 printk(BIOS_ERR, "%s: coreboot table didn't fit (%lx)\n",
220 __func__, new_high_table_pointer -
223 printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n",
224 new_high_table_pointer - high_table_pointer);
226 /* The coreboot table must be in 0-4K or 960K-1M */
227 rom_table_end = write_coreboot_table(
228 low_table_start, low_table_end,
229 rom_table_start, rom_table_end);
234 #if CONFIG_HAVE_ACPI_RESUME
235 /* Let's prepare the ACPI S3 Resume area now already, so we can rely on
236 * it begin there during reboot time. We don't need the pointer, nor
237 * the result right now. If it fails, ACPI resume will be disabled.
239 cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE);
245 /* The Multiboot information structure */
246 write_multiboot_info(rom_table_end);
249 // Remove before sending upstream