2 * This file is part of the coreboot project.
4 * Copyright (C) 2003-2004 Eric Biederman
5 * Copyright (C) 2005-2009 coresystems GmbH
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; version 2 of
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,
23 #include <console/console.h>
24 #include <ip_checksum.h>
25 #include <boot/tables.h>
26 #include <boot/coreboot_tables.h>
27 #include <arch/coreboot_tables.h>
30 #include <device/device.h>
33 static struct lb_header *lb_table_init(unsigned long addr)
35 struct lb_header *header;
37 /* 16 byte align the address */
41 header = (void *)addr;
42 header->signature[0] = 'L';
43 header->signature[1] = 'B';
44 header->signature[2] = 'I';
45 header->signature[3] = 'O';
46 header->header_bytes = sizeof(*header);
47 header->header_checksum = 0;
48 header->table_bytes = 0;
49 header->table_checksum = 0;
50 header->table_entries = 0;
54 static struct lb_record *lb_first_record(struct lb_header *header)
56 struct lb_record *rec;
57 rec = (void *)(((char *)header) + sizeof(*header));
61 static struct lb_record *lb_last_record(struct lb_header *header)
63 struct lb_record *rec;
64 rec = (void *)(((char *)header) + sizeof(*header) + header->table_bytes);
69 static struct lb_record *lb_next_record(struct lb_record *rec)
71 rec = (void *)(((char *)rec) + rec->size);
76 static struct lb_record *lb_new_record(struct lb_header *header)
78 struct lb_record *rec;
79 rec = lb_last_record(header);
80 if (header->table_entries) {
81 header->table_bytes += rec->size;
83 rec = lb_last_record(header);
84 header->table_entries++;
85 rec->tag = LB_TAG_UNUSED;
86 rec->size = sizeof(*rec);
91 static struct lb_memory *lb_memory(struct lb_header *header)
93 struct lb_record *rec;
94 struct lb_memory *mem;
95 rec = lb_new_record(header);
96 mem = (struct lb_memory *)rec;
97 mem->tag = LB_TAG_MEMORY;
98 mem->size = sizeof(*mem);
102 static struct lb_serial *lb_serial(struct lb_header *header)
104 #if CONFIG_CONSOLE_SERIAL8250
105 struct lb_record *rec;
106 struct lb_serial *serial;
107 rec = lb_new_record(header);
108 serial = (struct lb_serial *)rec;
109 serial->tag = LB_TAG_SERIAL;
110 serial->size = sizeof(*serial);
111 serial->ioport = CONFIG_TTYS0_BASE;
112 serial->baud = CONFIG_TTYS0_BAUD;
119 static void add_console(struct lb_header *header, u16 consoletype)
121 struct lb_console *console;
123 console = (struct lb_console *)lb_new_record(header);
124 console->tag = LB_TAG_CONSOLE;
125 console->size = sizeof(*console);
126 console->type = consoletype;
129 static void lb_console(struct lb_header *header)
131 #if CONFIG_CONSOLE_SERIAL8250
132 add_console(header, LB_TAG_CONSOLE_SERIAL8250);
134 #if CONFIG_CONSOLE_VGA
135 add_console(header, LB_TAG_CONSOLE_VGA);
137 #if CONFIG_CONSOLE_BTEXT
138 add_console(header, LB_TAG_CONSOLE_BTEXT);
140 #if CONFIG_CONSOLE_LOGBUF
141 add_console(header, LB_TAG_CONSOLE_LOGBUF);
143 #if CONFIG_CONSOLE_SROM
144 add_console(header, LB_TAG_CONSOLE_SROM);
146 #if CONFIG_USBDEBUG_DIRECT
147 add_console(header, LB_TAG_CONSOLE_EHCI);
151 static void lb_framebuffer(struct lb_header *header)
153 #if defined(CONFIG_BOOTSPLASH) && CONFIG_BOOTSPLASH && CONFIG_COREBOOT_KEEP_FRAMEBUFFER
154 void fill_lb_framebuffer(struct lb_framebuffer *framebuffer);
156 struct lb_framebuffer *framebuffer;
157 framebuffer = (struct lb_framebuffer *)lb_new_record(header);
158 framebuffer->tag = LB_TAG_FRAMEBUFFER;
159 framebuffer->size = sizeof(*framebuffer);
160 fill_lb_framebuffer(framebuffer);
164 static struct lb_mainboard *lb_mainboard(struct lb_header *header)
166 struct lb_record *rec;
167 struct lb_mainboard *mainboard;
168 rec = lb_new_record(header);
169 mainboard = (struct lb_mainboard *)rec;
170 mainboard->tag = LB_TAG_MAINBOARD;
172 mainboard->size = (sizeof(*mainboard) +
173 strlen(mainboard_vendor) + 1 +
174 strlen(mainboard_part_number) + 1 +
177 mainboard->vendor_idx = 0;
178 mainboard->part_number_idx = strlen(mainboard_vendor) + 1;
180 memcpy(mainboard->strings + mainboard->vendor_idx,
181 mainboard_vendor, strlen(mainboard_vendor) + 1);
182 memcpy(mainboard->strings + mainboard->part_number_idx,
183 mainboard_part_number, strlen(mainboard_part_number) + 1);
188 #if (CONFIG_HAVE_OPTION_TABLE == 1)
189 static struct cmos_checksum *lb_cmos_checksum(struct lb_header *header)
191 struct lb_record *rec;
192 struct cmos_checksum *cmos_checksum;
193 rec = lb_new_record(header);
194 cmos_checksum = (struct cmos_checksum *)rec;
195 cmos_checksum->tag = LB_TAG_OPTION_CHECKSUM;
197 cmos_checksum->size = (sizeof(*cmos_checksum));
199 cmos_checksum->range_start = CONFIG_LB_CKS_RANGE_START * 8;
200 cmos_checksum->range_end = ( CONFIG_LB_CKS_RANGE_END * 8 ) + 7;
201 cmos_checksum->location = CONFIG_LB_CKS_LOC * 8;
202 cmos_checksum->type = CHECKSUM_PCBIOS;
204 return cmos_checksum;
208 static void lb_strings(struct lb_header *header)
210 static const struct {
214 { LB_TAG_VERSION, coreboot_version, },
215 { LB_TAG_EXTRA_VERSION, coreboot_extra_version, },
216 { LB_TAG_BUILD, coreboot_build, },
217 { LB_TAG_COMPILE_TIME, coreboot_compile_time, },
218 { LB_TAG_COMPILE_BY, coreboot_compile_by, },
219 { LB_TAG_COMPILE_HOST, coreboot_compile_host, },
220 { LB_TAG_COMPILE_DOMAIN, coreboot_compile_domain, },
221 { LB_TAG_COMPILER, coreboot_compiler, },
222 { LB_TAG_LINKER, coreboot_linker, },
223 { LB_TAG_ASSEMBLER, coreboot_assembler, },
226 for(i = 0; i < ARRAY_SIZE(strings); i++) {
227 struct lb_string *rec;
229 rec = (struct lb_string *)lb_new_record(header);
230 len = strlen(strings[i].string);
231 rec->tag = strings[i].tag;
232 rec->size = (sizeof(*rec) + len + 1 + 3) & ~3;
233 memcpy(rec->string, strings[i].string, len+1);
238 #if CONFIG_WRITE_HIGH_TABLES == 1
239 static struct lb_forward *lb_forward(struct lb_header *header, struct lb_header *next_header)
241 struct lb_record *rec;
242 struct lb_forward *forward;
243 rec = lb_new_record(header);
244 forward = (struct lb_forward *)rec;
245 forward->tag = LB_TAG_FORWARD;
246 forward->size = sizeof(*forward);
247 forward->forward = (uint64_t)(unsigned long)next_header;
252 void lb_memory_range(struct lb_memory *mem,
253 uint32_t type, uint64_t start, uint64_t size)
256 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
257 mem->map[entries].start = pack_lb64(start);
258 mem->map[entries].size = pack_lb64(size);
259 mem->map[entries].type = type;
260 mem->size += sizeof(mem->map[0]);
263 static void lb_reserve_table_memory(struct lb_header *head)
265 struct lb_record *last_rec;
266 struct lb_memory *mem;
271 last_rec = lb_last_record(head);
273 start = (unsigned long)head;
274 end = (unsigned long)last_rec;
275 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
276 /* Resize the right two memory areas so this table is in
277 * a reserved area of memory. Everything has been carefully
278 * setup so that is all we need to do.
280 for(i = 0; i < entries; i++ ) {
281 uint64_t map_start = unpack_lb64(mem->map[i].start);
282 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
283 /* Does this area need to be expanded? */
284 if (map_end == start) {
285 mem->map[i].size = pack_lb64(end - map_start);
287 /* Does this area need to be contracted? */
288 else if (map_start == start) {
289 mem->map[i].start = pack_lb64(end);
290 mem->map[i].size = pack_lb64(map_end - end);
295 static unsigned long lb_table_fini(struct lb_header *head, int fixup)
297 struct lb_record *rec, *first_rec;
298 rec = lb_last_record(head);
299 if (head->table_entries) {
300 head->table_bytes += rec->size;
304 lb_reserve_table_memory(head);
306 first_rec = lb_first_record(head);
307 head->table_checksum = compute_ip_checksum(first_rec, head->table_bytes);
308 head->header_checksum = 0;
309 head->header_checksum = compute_ip_checksum(head, sizeof(*head));
310 printk(BIOS_DEBUG, "Wrote coreboot table at: %p - %p checksum %x\n",
311 head, rec, head->table_checksum);
312 return (unsigned long)rec;
315 static void lb_cleanup_memory_ranges(struct lb_memory *mem)
319 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
321 /* Sort the lb memory ranges */
322 for(i = 0; i < entries; i++) {
323 uint64_t entry_start = unpack_lb64(mem->map[i].start);
324 for(j = i; j < entries; j++) {
325 uint64_t temp_start = unpack_lb64(mem->map[j].start);
326 if (temp_start < entry_start) {
327 struct lb_memory_range tmp;
329 mem->map[i] = mem->map[j];
335 /* Merge adjacent entries */
336 for(i = 0; (i + 1) < entries; i++) {
337 uint64_t start, end, nstart, nend;
338 if (mem->map[i].type != mem->map[i + 1].type) {
341 start = unpack_lb64(mem->map[i].start);
342 end = start + unpack_lb64(mem->map[i].size);
343 nstart = unpack_lb64(mem->map[i + 1].start);
344 nend = nstart + unpack_lb64(mem->map[i + 1].size);
345 if ((start <= nstart) && (end > nstart)) {
346 if (start > nstart) {
352 /* Record the new region size */
353 mem->map[i].start = pack_lb64(start);
354 mem->map[i].size = pack_lb64(end - start);
356 /* Delete the entry I have merged with */
357 memmove(&mem->map[i + 1], &mem->map[i + 2],
358 ((entries - i - 2) * sizeof(mem->map[0])));
359 mem->size -= sizeof(mem->map[0]);
361 /* See if I can merge with the next entry as well */
367 static void lb_remove_memory_range(struct lb_memory *mem,
368 uint64_t start, uint64_t size)
375 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
377 /* Remove a reserved area from the memory map */
378 for(i = 0; i < entries; i++) {
379 uint64_t map_start = unpack_lb64(mem->map[i].start);
380 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
381 if ((start <= map_start) && (end >= map_end)) {
382 /* Remove the completely covered range */
383 memmove(&mem->map[i], &mem->map[i + 1],
384 ((entries - i - 1) * sizeof(mem->map[0])));
385 mem->size -= sizeof(mem->map[0]);
387 /* Since the index will disappear revisit what will appear here */
390 else if ((start > map_start) && (end < map_end)) {
391 /* Split the memory range */
392 memmove(&mem->map[i + 1], &mem->map[i],
393 ((entries - i) * sizeof(mem->map[0])));
394 mem->size += sizeof(mem->map[0]);
396 /* Update the first map entry */
397 mem->map[i].size = pack_lb64(start - map_start);
398 /* Update the second map entry */
399 mem->map[i + 1].start = pack_lb64(end);
400 mem->map[i + 1].size = pack_lb64(map_end - end);
401 /* Don't bother with this map entry again */
404 else if ((start <= map_start) && (end > map_start)) {
405 /* Shrink the start of the memory range */
406 mem->map[i].start = pack_lb64(end);
407 mem->map[i].size = pack_lb64(map_end - end);
409 else if ((start < map_end) && (start > map_start)) {
410 /* Shrink the end of the memory range */
411 mem->map[i].size = pack_lb64(start - map_start);
416 /* This function is used in mainboard specific code, too */
417 void lb_add_memory_range(struct lb_memory *mem,
418 uint32_t type, uint64_t start, uint64_t size)
420 lb_remove_memory_range(mem, start, size);
421 lb_memory_range(mem, type, start, size);
422 lb_cleanup_memory_ranges(mem);
425 static void lb_dump_memory_ranges(struct lb_memory *mem)
429 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
431 printk(BIOS_DEBUG, "coreboot memory table:\n");
432 for(i = 0; i < entries; i++) {
433 uint64_t entry_start = unpack_lb64(mem->map[i].start);
434 uint64_t entry_size = unpack_lb64(mem->map[i].size);
435 const char *entry_type;
437 switch (mem->map[i].type) {
438 case LB_MEM_RAM: entry_type="RAM"; break;
439 case LB_MEM_RESERVED: entry_type="RESERVED"; break;
440 case LB_MEM_ACPI: entry_type="ACPI"; break;
441 case LB_MEM_NVS: entry_type="NVS"; break;
442 case LB_MEM_UNUSABLE: entry_type="UNUSABLE"; break;
443 case LB_MEM_VENDOR_RSVD: entry_type="VENDOR RESERVED"; break;
444 case LB_MEM_TABLE: entry_type="CONFIGURATION TABLES"; break;
445 default: entry_type="UNKNOWN!"; break;
448 printk(BIOS_DEBUG, "%2d. %016llx-%016llx: %s\n",
449 i, entry_start, entry_start+entry_size-1, entry_type);
455 /* Routines to extract part so the coreboot table or
456 * information from the coreboot table after we have written it.
457 * Currently get_lb_mem relies on a global we can change the
460 static struct lb_memory *mem_ranges = 0;
461 struct lb_memory *get_lb_mem(void)
466 static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res)
468 struct lb_memory *mem = gp;
469 lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
472 static struct lb_memory *build_lb_mem(struct lb_header *head)
474 struct lb_memory *mem;
476 /* Record where the lb memory ranges will live */
477 mem = lb_memory(head);
480 /* Build the raw table of memory */
481 search_global_resources(
482 IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
483 build_lb_mem_range, mem);
484 lb_cleanup_memory_ranges(mem);
488 #if CONFIG_WRITE_HIGH_TABLES == 1
489 extern uint64_t high_tables_base, high_tables_size;
492 unsigned long write_coreboot_table(
493 unsigned long low_table_start, unsigned long low_table_end,
494 unsigned long rom_table_start, unsigned long rom_table_end)
496 struct lb_header *head;
497 struct lb_memory *mem;
499 #if CONFIG_WRITE_HIGH_TABLES == 1
500 printk(BIOS_DEBUG, "Writing high table forward entry at 0x%08lx\n",
502 head = lb_table_init(low_table_end);
503 lb_forward(head, (struct lb_header*)rom_table_end);
505 low_table_end = (unsigned long) lb_table_fini(head, 0);
506 printk(BIOS_DEBUG, "New low_table_end: 0x%08lx\n", low_table_end);
507 printk(BIOS_DEBUG, "Now going to write high coreboot table at 0x%08lx\n",
510 head = lb_table_init(rom_table_end);
511 rom_table_end = (unsigned long)head;
512 printk(BIOS_DEBUG, "rom_table_end = 0x%08lx\n", rom_table_end);
514 if(low_table_end > (0x1000 - sizeof(struct lb_header))) { /* after 4K */
515 /* We need to put lbtable on to [0xf0000,0x100000) */
516 head = lb_table_init(rom_table_end);
517 rom_table_end = (unsigned long)head;
519 head = lb_table_init(low_table_end);
520 low_table_end = (unsigned long)head;
524 printk(BIOS_DEBUG, "Adjust low_table_end from 0x%08lx to ", low_table_end);
525 low_table_end += 0xfff; // 4K aligned
526 low_table_end &= ~0xfff;
527 printk(BIOS_DEBUG, "0x%08lx \n", low_table_end);
529 /* The Linux kernel assumes this region is reserved */
530 printk(BIOS_DEBUG, "Adjust rom_table_end from 0x%08lx to ", rom_table_end);
531 rom_table_end += 0xffff; // 64K align
532 rom_table_end &= ~0xffff;
533 printk(BIOS_DEBUG, "0x%08lx \n", rom_table_end);
535 #if (CONFIG_HAVE_OPTION_TABLE == 1)
537 struct lb_record *rec_dest = lb_new_record(head);
538 /* Copy the option config table, it's already a lb_record... */
539 memcpy(rec_dest, &option_table, option_table.size);
540 /* Create cmos checksum entry in coreboot table */
541 lb_cmos_checksum(head);
544 /* Record where RAM is located */
545 mem = build_lb_mem(head);
547 /* Record the mptable and the the lb_table (This will be adjusted later) */
548 lb_add_memory_range(mem, LB_MEM_TABLE,
549 low_table_start, low_table_end - low_table_start);
551 /* Record the pirq table, acpi tables, and maybe the mptable */
552 lb_add_memory_range(mem, LB_MEM_TABLE,
553 rom_table_start, rom_table_end-rom_table_start);
555 #if CONFIG_WRITE_HIGH_TABLES == 1
556 printk(BIOS_DEBUG, "Adding high table area\n");
557 // should this be LB_MEM_ACPI?
558 lb_add_memory_range(mem, LB_MEM_TABLE,
559 high_tables_base, high_tables_size);
562 #if (CONFIG_HAVE_MAINBOARD_RESOURCES == 1)
563 add_mainboard_resources(mem);
566 lb_dump_memory_ranges(mem);
569 * I assume that there is always memory at immediately after
570 * the low_table_end. This means that after I setup the coreboot table.
571 * I can trivially fixup the reserved memory ranges to hold the correct
572 * size of the coreboot table.
575 /* Record our motherboard */
577 /* Record the serial port, if present */
579 /* Record our console setup */
581 /* Record our various random string information */
583 /* Record our framebuffer */
584 lb_framebuffer(head);
586 /* Remember where my valid memory ranges are */
587 return lb_table_fini(head, 1);