1 #include <console/console.h>
2 #include <ip_checksum.h>
3 #include <boot/coreboot_tables.h>
4 #include "coreboot_table.h"
7 #include <device/device.h>
10 struct lb_header *lb_table_init(unsigned long addr)
12 struct lb_header *header;
14 /* 16 byte align the address */
18 header = (void *)addr;
19 header->signature[0] = 'L';
20 header->signature[1] = 'B';
21 header->signature[2] = 'I';
22 header->signature[3] = 'O';
23 header->header_bytes = sizeof(*header);
24 header->header_checksum = 0;
25 header->table_bytes = 0;
26 header->table_checksum = 0;
27 header->table_entries = 0;
31 struct lb_record *lb_first_record(struct lb_header *header)
33 struct lb_record *rec;
34 rec = (void *)(((char *)header) + sizeof(*header));
38 struct lb_record *lb_last_record(struct lb_header *header)
40 struct lb_record *rec;
41 rec = (void *)(((char *)header) + sizeof(*header) + header->table_bytes);
45 struct lb_record *lb_next_record(struct lb_record *rec)
47 rec = (void *)(((char *)rec) + rec->size);
51 struct lb_record *lb_new_record(struct lb_header *header)
53 struct lb_record *rec;
54 rec = lb_last_record(header);
55 if (header->table_entries) {
56 header->table_bytes += rec->size;
58 rec = lb_last_record(header);
59 header->table_entries++;
60 rec->tag = LB_TAG_UNUSED;
61 rec->size = sizeof(*rec);
66 struct lb_memory *lb_memory(struct lb_header *header)
68 struct lb_record *rec;
69 struct lb_memory *mem;
70 rec = lb_new_record(header);
71 mem = (struct lb_memory *)rec;
72 mem->tag = LB_TAG_MEMORY;
73 mem->size = sizeof(*mem);
77 struct lb_serial *lb_serial(struct lb_header *header)
79 #if defined(TTYS0_BASE)
80 struct lb_record *rec;
81 struct lb_serial *serial;
82 rec = lb_new_record(header);
83 serial = (struct lb_serial *)rec;
84 serial->tag = LB_TAG_SERIAL;
85 serial->size = sizeof(*serial);
86 serial->ioport = TTYS0_BASE;
87 serial->baud = TTYS0_BAUD;
94 void add_console(struct lb_header *header, u16 consoletype)
96 struct lb_console *console;
98 console = (struct lb_console *)lb_new_record(header);
99 console->tag = LB_TAG_CONSOLE;
100 console->size = sizeof(*console);
101 console->type = consoletype;
104 void lb_console(struct lb_header *header)
106 #ifdef CONFIG_CONSOLE_SERIAL8250
107 add_console(header, LB_TAG_CONSOLE_SERIAL8250);
109 #ifdef CONFIG_CONSOLE_VGA
110 add_console(header, LB_TAG_CONSOLE_VGA);
112 #ifdef CONFIG_CONSOLE_BTEXT
113 add_console(header, LB_TAG_CONSOLE_BTEXT);
115 #ifdef CONFIG_CONSOLE_LOGBUF
116 add_console(header, LB_TAG_CONSOLE_LOGBUF);
118 #ifdef CONFIG_CONSOLE_SROM
119 add_console(header, LB_TAG_CONSOLE_SROM);
121 #ifdef CONFIG_USBDEBUG_DIRECT
122 add_console(header, LB_TAG_CONSOLE_EHCI);
126 struct lb_mainboard *lb_mainboard(struct lb_header *header)
128 struct lb_record *rec;
129 struct lb_mainboard *mainboard;
130 rec = lb_new_record(header);
131 mainboard = (struct lb_mainboard *)rec;
132 mainboard->tag = LB_TAG_MAINBOARD;
134 mainboard->size = (sizeof(*mainboard) +
135 strlen(mainboard_vendor) + 1 +
136 strlen(mainboard_part_number) + 1 +
139 mainboard->vendor_idx = 0;
140 mainboard->part_number_idx = strlen(mainboard_vendor) + 1;
142 memcpy(mainboard->strings + mainboard->vendor_idx,
143 mainboard_vendor, strlen(mainboard_vendor) + 1);
144 memcpy(mainboard->strings + mainboard->part_number_idx,
145 mainboard_part_number, strlen(mainboard_part_number) + 1);
150 struct cmos_checksum *lb_cmos_checksum(struct lb_header *header)
152 struct lb_record *rec;
153 struct cmos_checksum *cmos_checksum;
154 rec = lb_new_record(header);
155 cmos_checksum = (struct cmos_checksum *)rec;
156 cmos_checksum->tag = LB_TAG_OPTION_CHECKSUM;
158 cmos_checksum->size = (sizeof(*cmos_checksum));
160 cmos_checksum->range_start = LB_CKS_RANGE_START * 8;
161 cmos_checksum->range_end = ( LB_CKS_RANGE_END * 8 ) + 7;
162 cmos_checksum->location = LB_CKS_LOC * 8;
163 cmos_checksum->type = CHECKSUM_PCBIOS;
165 return cmos_checksum;
168 void lb_strings(struct lb_header *header)
170 static const struct {
174 { LB_TAG_VERSION, coreboot_version, },
175 { LB_TAG_EXTRA_VERSION, coreboot_extra_version, },
176 { LB_TAG_BUILD, coreboot_build, },
177 { LB_TAG_COMPILE_TIME, coreboot_compile_time, },
178 { LB_TAG_COMPILE_BY, coreboot_compile_by, },
179 { LB_TAG_COMPILE_HOST, coreboot_compile_host, },
180 { LB_TAG_COMPILE_DOMAIN, coreboot_compile_domain, },
181 { LB_TAG_COMPILER, coreboot_compiler, },
182 { LB_TAG_LINKER, coreboot_linker, },
183 { LB_TAG_ASSEMBLER, coreboot_assembler, },
186 for(i = 0; i < ARRAY_SIZE(strings); i++) {
187 struct lb_string *rec;
189 rec = (struct lb_string *)lb_new_record(header);
190 len = strlen(strings[i].string);
191 rec->tag = strings[i].tag;
192 rec->size = (sizeof(*rec) + len + 1 + 3) & ~3;
193 memcpy(rec->string, strings[i].string, len+1);
198 struct lb_forward *lb_forward(struct lb_header *header, struct lb_header *next_header)
200 struct lb_record *rec;
201 struct lb_forward *forward;
202 rec = lb_new_record(header);
203 forward = (struct lb_forward *)rec;
204 forward->tag = LB_TAG_FORWARD;
205 forward->size = sizeof(*forward);
206 forward->forward = (uint64_t)(unsigned long)next_header;
210 void lb_memory_range(struct lb_memory *mem,
211 uint32_t type, uint64_t start, uint64_t size)
214 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
215 mem->map[entries].start = pack_lb64(start);
216 mem->map[entries].size = pack_lb64(size);
217 mem->map[entries].type = type;
218 mem->size += sizeof(mem->map[0]);
221 static void lb_reserve_table_memory(struct lb_header *head)
223 struct lb_record *last_rec;
224 struct lb_memory *mem;
229 last_rec = lb_last_record(head);
231 start = (unsigned long)head;
232 end = (unsigned long)last_rec;
233 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
234 /* Resize the right two memory areas so this table is in
235 * a reserved area of memory. Everything has been carefully
236 * setup so that is all we need to do.
238 for(i = 0; i < entries; i++ ) {
239 uint64_t map_start = unpack_lb64(mem->map[i].start);
240 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
241 /* Does this area need to be expanded? */
242 if (map_end == start) {
243 mem->map[i].size = pack_lb64(end - map_start);
245 /* Does this area need to be contracted? */
246 else if (map_start == start) {
247 mem->map[i].start = pack_lb64(end);
248 mem->map[i].size = pack_lb64(map_end - end);
253 static unsigned long lb_table_fini(struct lb_header *head, int fixup)
255 struct lb_record *rec, *first_rec;
256 rec = lb_last_record(head);
257 if (head->table_entries) {
258 head->table_bytes += rec->size;
262 lb_reserve_table_memory(head);
264 first_rec = lb_first_record(head);
265 head->table_checksum = compute_ip_checksum(first_rec, head->table_bytes);
266 head->header_checksum = 0;
267 head->header_checksum = compute_ip_checksum(head, sizeof(*head));
268 printk_debug("Wrote coreboot table at: %p - %p checksum %x\n",
269 head, rec, head->table_checksum);
270 return (unsigned long)rec;
273 static void lb_cleanup_memory_ranges(struct lb_memory *mem)
277 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
279 /* Sort the lb memory ranges */
280 for(i = 0; i < entries; i++) {
281 uint64_t entry_start = unpack_lb64(mem->map[i].start);
282 for(j = i; j < entries; j++) {
283 uint64_t temp_start = unpack_lb64(mem->map[j].start);
284 if (temp_start < entry_start) {
285 struct lb_memory_range tmp;
287 mem->map[i] = mem->map[j];
293 /* Merge adjacent entries */
294 for(i = 0; (i + 1) < entries; i++) {
295 uint64_t start, end, nstart, nend;
296 if (mem->map[i].type != mem->map[i + 1].type) {
299 start = unpack_lb64(mem->map[i].start);
300 end = start + unpack_lb64(mem->map[i].size);
301 nstart = unpack_lb64(mem->map[i + 1].start);
302 nend = nstart + unpack_lb64(mem->map[i + 1].size);
303 if ((start <= nstart) && (end > nstart)) {
304 if (start > nstart) {
310 /* Record the new region size */
311 mem->map[i].start = pack_lb64(start);
312 mem->map[i].size = pack_lb64(end - start);
314 /* Delete the entry I have merged with */
315 memmove(&mem->map[i + 1], &mem->map[i + 2],
316 ((entries - i - 2) * sizeof(mem->map[0])));
317 mem->size -= sizeof(mem->map[0]);
319 /* See if I can merge with the next entry as well */
325 static void lb_remove_memory_range(struct lb_memory *mem,
326 uint64_t start, uint64_t size)
333 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
335 /* Remove a reserved area from the memory map */
336 for(i = 0; i < entries; i++) {
337 uint64_t map_start = unpack_lb64(mem->map[i].start);
338 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
339 if ((start <= map_start) && (end >= map_end)) {
340 /* Remove the completely covered range */
341 memmove(&mem->map[i], &mem->map[i + 1],
342 ((entries - i - 1) * sizeof(mem->map[0])));
343 mem->size -= sizeof(mem->map[0]);
345 /* Since the index will disappear revisit what will appear here */
348 else if ((start > map_start) && (end < map_end)) {
349 /* Split the memory range */
350 memmove(&mem->map[i + 1], &mem->map[i],
351 ((entries - i) * sizeof(mem->map[0])));
352 mem->size += sizeof(mem->map[0]);
354 /* Update the first map entry */
355 mem->map[i].size = pack_lb64(start - map_start);
356 /* Update the second map entry */
357 mem->map[i + 1].start = pack_lb64(end);
358 mem->map[i + 1].size = pack_lb64(map_end - end);
359 /* Don't bother with this map entry again */
362 else if ((start <= map_start) && (end > map_start)) {
363 /* Shrink the start of the memory range */
364 mem->map[i].start = pack_lb64(end);
365 mem->map[i].size = pack_lb64(map_end - end);
367 else if ((start < map_end) && (start > map_start)) {
368 /* Shrink the end of the memory range */
369 mem->map[i].size = pack_lb64(start - map_start);
374 /* This function is used in mainboard specific code, too */
375 void lb_add_memory_range(struct lb_memory *mem,
376 uint32_t type, uint64_t start, uint64_t size)
378 lb_remove_memory_range(mem, start, size);
379 lb_memory_range(mem, type, start, size);
380 lb_cleanup_memory_ranges(mem);
383 /* Routines to extract part so the coreboot table or
384 * information from the coreboot table after we have written it.
385 * Currently get_lb_mem relies on a global we can change the
388 static struct lb_memory *mem_ranges = 0;
389 struct lb_memory *get_lb_mem(void)
394 static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res)
396 struct lb_memory *mem = gp;
397 lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
400 static struct lb_memory *build_lb_mem(struct lb_header *head)
402 struct lb_memory *mem;
404 /* Record where the lb memory ranges will live */
405 mem = lb_memory(head);
408 /* Build the raw table of memory */
409 search_global_resources(
410 IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
411 build_lb_mem_range, mem);
412 lb_cleanup_memory_ranges(mem);
416 #if HAVE_HIGH_TABLES == 1
417 extern uint64_t high_tables_base, high_tables_size;
420 unsigned long write_coreboot_table(
421 unsigned long low_table_start, unsigned long low_table_end,
422 unsigned long rom_table_start, unsigned long rom_table_end)
424 struct lb_header *head;
425 struct lb_memory *mem;
427 #if HAVE_HIGH_TABLES == 1
428 printk_debug("Writing high table forward entry at 0x%08lx\n",
430 head = lb_table_init(low_table_end);
431 lb_forward(head, (struct lb_header*)rom_table_end);
433 low_table_end = (unsigned long) lb_table_fini(head, 0);
434 printk_debug("New low_table_end: 0x%08lx\n", low_table_end);
435 printk_debug("Now going to write high coreboot table at 0x%08lx\n",
438 head = lb_table_init(rom_table_end);
439 rom_table_end = (unsigned long)head;
440 printk_debug("rom_table_end = 0x%08lx\n", rom_table_end);
442 if(low_table_end > (0x1000 - sizeof(struct lb_header))) { /* after 4K */
443 /* We need to put lbtable on to [0xf0000,0x100000) */
444 head = lb_table_init(rom_table_end);
445 rom_table_end = (unsigned long)head;
447 head = lb_table_init(low_table_end);
448 low_table_end = (unsigned long)head;
452 printk_debug("Adjust low_table_end from 0x%08lx to ", low_table_end);
453 low_table_end += 0xfff; // 4K aligned
454 low_table_end &= ~0xfff;
455 printk_debug("0x%08lx \n", low_table_end);
457 /* The Linux kernel assumes this region is reserved */
458 printk_debug("Adjust rom_table_end from 0x%08lx to ", rom_table_end);
459 rom_table_end += 0xffff; // 64K align
460 rom_table_end &= ~0xffff;
461 printk_debug("0x%08lx \n", rom_table_end);
463 #if (HAVE_OPTION_TABLE == 1)
465 struct lb_record *rec_dest, *rec_src;
466 /* Write the option config table... */
467 rec_dest = lb_new_record(head);
468 rec_src = (struct lb_record *)(void *)&option_table;
469 memcpy(rec_dest, rec_src, rec_src->size);
470 /* Create cmos checksum entry in coreboot table */
471 lb_cmos_checksum(head);
474 /* Record where RAM is located */
475 mem = build_lb_mem(head);
477 /* Record the mptable and the the lb_table (This will be adjusted later) */
478 lb_add_memory_range(mem, LB_MEM_TABLE,
479 low_table_start, low_table_end - low_table_start);
481 /* Record the pirq table, acpi tables, and maybe the mptable */
482 lb_add_memory_range(mem, LB_MEM_TABLE,
483 rom_table_start, rom_table_end-rom_table_start);
485 #if HAVE_HIGH_TABLES == 1
486 printk_debug("Adding high table area\n");
487 lb_add_memory_range(mem, LB_MEM_TABLE,
488 high_tables_base, high_tables_size);
491 #if (HAVE_MAINBOARD_RESOURCES == 1)
492 add_mainboard_resources(mem);
496 * I assume that there is always memory at immediately after
497 * the low_table_end. This means that after I setup the coreboot table.
498 * I can trivially fixup the reserved memory ranges to hold the correct
499 * size of the coreboot table.
502 /* Record our motherboard */
504 /* Record the serial port, if present */
506 /* Record our console setup */
508 /* Record our various random string information */
511 /* Remember where my valid memory ranges are */
512 return lb_table_fini(head, 1);