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_record *rec;
97 struct lb_console *console;
98 rec = lb_new_record(header);
99 console = (struct lb_console *)lb_new_record(header);
100 console->tag = LB_TAG_CONSOLE;
101 console->size = sizeof(*console);
102 console->type = consoletype;
105 void lb_console(struct lb_header *header)
107 #ifdef CONFIG_CONSOLE_SERIAL8250
108 add_console(header, LB_TAG_CONSOLE_SERIAL8250);
110 #ifdef CONFIG_CONSOLE_VGA
111 add_console(header, LB_TAG_CONSOLE_VGA);
113 #ifdef CONFIG_CONSOLE_BTEXT
114 add_console(header, LB_TAG_CONSOLE_BTEXT);
116 #ifdef CONFIG_CONSOLE_LOGBUF
117 add_console(header, LB_TAG_CONSOLE_LOGBUF);
119 #ifdef CONFIG_CONSOLE_SROM
120 add_console(header, LB_TAG_CONSOLE_SROM);
122 #ifdef CONFIG_USBDEBUG_DIRECT
123 add_console(header, LB_TAG_CONSOLE_EHCI);
127 struct lb_mainboard *lb_mainboard(struct lb_header *header)
129 struct lb_record *rec;
130 struct lb_mainboard *mainboard;
131 rec = lb_new_record(header);
132 mainboard = (struct lb_mainboard *)rec;
133 mainboard->tag = LB_TAG_MAINBOARD;
135 mainboard->size = (sizeof(*mainboard) +
136 strlen(mainboard_vendor) + 1 +
137 strlen(mainboard_part_number) + 1 +
140 mainboard->vendor_idx = 0;
141 mainboard->part_number_idx = strlen(mainboard_vendor) + 1;
143 memcpy(mainboard->strings + mainboard->vendor_idx,
144 mainboard_vendor, strlen(mainboard_vendor) + 1);
145 memcpy(mainboard->strings + mainboard->part_number_idx,
146 mainboard_part_number, strlen(mainboard_part_number) + 1);
151 struct cmos_checksum *lb_cmos_checksum(struct lb_header *header)
153 struct lb_record *rec;
154 struct cmos_checksum *cmos_checksum;
155 rec = lb_new_record(header);
156 cmos_checksum = (struct cmos_checksum *)rec;
157 cmos_checksum->tag = LB_TAG_OPTION_CHECKSUM;
159 cmos_checksum->size = (sizeof(*cmos_checksum));
161 cmos_checksum->range_start = LB_CKS_RANGE_START * 8;
162 cmos_checksum->range_end = ( LB_CKS_RANGE_END * 8 ) + 7;
163 cmos_checksum->location = LB_CKS_LOC * 8;
164 cmos_checksum->type = CHECKSUM_PCBIOS;
166 return cmos_checksum;
169 void lb_strings(struct lb_header *header)
171 static const struct {
175 { LB_TAG_VERSION, coreboot_version, },
176 { LB_TAG_EXTRA_VERSION, coreboot_extra_version, },
177 { LB_TAG_BUILD, coreboot_build, },
178 { LB_TAG_COMPILE_TIME, coreboot_compile_time, },
179 { LB_TAG_COMPILE_BY, coreboot_compile_by, },
180 { LB_TAG_COMPILE_HOST, coreboot_compile_host, },
181 { LB_TAG_COMPILE_DOMAIN, coreboot_compile_domain, },
182 { LB_TAG_COMPILER, coreboot_compiler, },
183 { LB_TAG_LINKER, coreboot_linker, },
184 { LB_TAG_ASSEMBLER, coreboot_assembler, },
187 for(i = 0; i < ARRAY_SIZE(strings); i++) {
188 struct lb_string *rec;
190 rec = (struct lb_string *)lb_new_record(header);
191 len = strlen(strings[i].string);
192 rec->tag = strings[i].tag;
193 rec->size = (sizeof(*rec) + len + 1 + 3) & ~3;
194 memcpy(rec->string, strings[i].string, len+1);
199 struct lb_forward *lb_forward(struct lb_header *header, struct lb_header *next_header)
201 struct lb_record *rec;
202 struct lb_forward *forward;
203 rec = lb_new_record(header);
204 forward = (struct lb_forward *)rec;
205 forward->tag = LB_TAG_FORWARD;
206 forward->size = sizeof(*forward);
207 forward->forward = (uint64_t)(unsigned long)next_header;
211 void lb_memory_range(struct lb_memory *mem,
212 uint32_t type, uint64_t start, uint64_t size)
215 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
216 mem->map[entries].start = pack_lb64(start);
217 mem->map[entries].size = pack_lb64(size);
218 mem->map[entries].type = type;
219 mem->size += sizeof(mem->map[0]);
222 static void lb_reserve_table_memory(struct lb_header *head)
224 struct lb_record *last_rec;
225 struct lb_memory *mem;
230 last_rec = lb_last_record(head);
232 start = (unsigned long)head;
233 end = (unsigned long)last_rec;
234 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
235 /* Resize the right two memory areas so this table is in
236 * a reserved area of memory. Everything has been carefully
237 * setup so that is all we need to do.
239 for(i = 0; i < entries; i++ ) {
240 uint64_t map_start = unpack_lb64(mem->map[i].start);
241 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
242 /* Does this area need to be expanded? */
243 if (map_end == start) {
244 mem->map[i].size = pack_lb64(end - map_start);
246 /* Does this area need to be contracted? */
247 else if (map_start == start) {
248 mem->map[i].start = pack_lb64(end);
249 mem->map[i].size = pack_lb64(map_end - end);
254 static unsigned long lb_table_fini(struct lb_header *head, int fixup)
256 struct lb_record *rec, *first_rec;
257 rec = lb_last_record(head);
258 if (head->table_entries) {
259 head->table_bytes += rec->size;
263 lb_reserve_table_memory(head);
265 first_rec = lb_first_record(head);
266 head->table_checksum = compute_ip_checksum(first_rec, head->table_bytes);
267 head->header_checksum = 0;
268 head->header_checksum = compute_ip_checksum(head, sizeof(*head));
269 printk_debug("Wrote coreboot table at: %p - %p checksum %x\n",
270 head, rec, head->table_checksum);
271 return (unsigned long)rec;
274 static void lb_cleanup_memory_ranges(struct lb_memory *mem)
278 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
280 /* Sort the lb memory ranges */
281 for(i = 0; i < entries; i++) {
282 uint64_t entry_start = unpack_lb64(mem->map[i].start);
283 for(j = i; j < entries; j++) {
284 uint64_t temp_start = unpack_lb64(mem->map[j].start);
285 if (temp_start < entry_start) {
286 struct lb_memory_range tmp;
288 mem->map[i] = mem->map[j];
294 /* Merge adjacent entries */
295 for(i = 0; (i + 1) < entries; i++) {
296 uint64_t start, end, nstart, nend;
297 if (mem->map[i].type != mem->map[i + 1].type) {
300 start = unpack_lb64(mem->map[i].start);
301 end = start + unpack_lb64(mem->map[i].size);
302 nstart = unpack_lb64(mem->map[i + 1].start);
303 nend = nstart + unpack_lb64(mem->map[i + 1].size);
304 if ((start <= nstart) && (end > nstart)) {
305 if (start > nstart) {
311 /* Record the new region size */
312 mem->map[i].start = pack_lb64(start);
313 mem->map[i].size = pack_lb64(end - start);
315 /* Delete the entry I have merged with */
316 memmove(&mem->map[i + 1], &mem->map[i + 2],
317 ((entries - i - 2) * sizeof(mem->map[0])));
318 mem->size -= sizeof(mem->map[0]);
320 /* See if I can merge with the next entry as well */
326 static void lb_remove_memory_range(struct lb_memory *mem,
327 uint64_t start, uint64_t size)
334 entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
336 /* Remove a reserved area from the memory map */
337 for(i = 0; i < entries; i++) {
338 uint64_t map_start = unpack_lb64(mem->map[i].start);
339 uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
340 if ((start <= map_start) && (end >= map_end)) {
341 /* Remove the completely covered range */
342 memmove(&mem->map[i], &mem->map[i + 1],
343 ((entries - i - 1) * sizeof(mem->map[0])));
344 mem->size -= sizeof(mem->map[0]);
346 /* Since the index will disappear revisit what will appear here */
349 else if ((start > map_start) && (end < map_end)) {
350 /* Split the memory range */
351 memmove(&mem->map[i + 1], &mem->map[i],
352 ((entries - i) * sizeof(mem->map[0])));
353 mem->size += sizeof(mem->map[0]);
355 /* Update the first map entry */
356 mem->map[i].size = pack_lb64(start - map_start);
357 /* Update the second map entry */
358 mem->map[i + 1].start = pack_lb64(end);
359 mem->map[i + 1].size = pack_lb64(map_end - end);
360 /* Don't bother with this map entry again */
363 else if ((start <= map_start) && (end > map_start)) {
364 /* Shrink the start of the memory range */
365 mem->map[i].start = pack_lb64(end);
366 mem->map[i].size = pack_lb64(map_end - end);
368 else if ((start < map_end) && (start > map_start)) {
369 /* Shrink the end of the memory range */
370 mem->map[i].size = pack_lb64(start - map_start);
375 /* This function is used in mainboard specific code, too */
376 void lb_add_memory_range(struct lb_memory *mem,
377 uint32_t type, uint64_t start, uint64_t size)
379 lb_remove_memory_range(mem, start, size);
380 lb_memory_range(mem, type, start, size);
381 lb_cleanup_memory_ranges(mem);
384 /* Routines to extract part so the coreboot table or
385 * information from the coreboot table after we have written it.
386 * Currently get_lb_mem relies on a global we can change the
389 static struct lb_memory *mem_ranges = 0;
390 struct lb_memory *get_lb_mem(void)
395 static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res)
397 struct lb_memory *mem = gp;
398 lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
401 static struct lb_memory *build_lb_mem(struct lb_header *head)
403 struct lb_memory *mem;
405 /* Record where the lb memory ranges will live */
406 mem = lb_memory(head);
409 /* Build the raw table of memory */
410 search_global_resources(
411 IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
412 build_lb_mem_range, mem);
413 lb_cleanup_memory_ranges(mem);
417 unsigned long write_coreboot_table(
418 unsigned long low_table_start, unsigned long low_table_end,
419 unsigned long rom_table_start, unsigned long rom_table_end)
421 struct lb_header *head;
422 struct lb_memory *mem;
424 #if HAVE_HIGH_TABLES == 1
425 printk_debug("Writing high table forward entry at 0x%08lx\n",
427 head = lb_table_init(low_table_end);
428 lb_forward(head, rom_table_end);
429 lb_table_fini(head, 0);
431 low_table_end = (unsigned long)head;
432 printk_debug("New low_table_end: 0x%08lx\n", low_table_end);
433 printk_debug("Now going to write high coreboot table at 0x%08lx\n",
436 head = lb_table_init(rom_table_end);
437 rom_table_end = (unsigned long)head;
438 printk_debug("rom_table_end = 0x%08lx\n", rom_table_end);
440 if(low_table_end > (0x1000 - sizeof(struct lb_header))) { /* after 4K */
441 /* We need to put lbtable on to [0xf0000,0x100000) */
442 head = lb_table_init(rom_table_end);
443 rom_table_end = (unsigned long)head;
445 head = lb_table_init(low_table_end);
446 low_table_end = (unsigned long)head;
450 printk_debug("Adjust low_table_end from 0x%08lx to ", low_table_end);
451 low_table_end += 0xfff; // 4K aligned
452 low_table_end &= ~0xfff;
453 printk_debug("0x%08lx \n", low_table_end);
455 /* The Linux kernel assumes this region is reserved */
456 printk_debug("Adjust rom_table_end from 0x%08lx to ", rom_table_end);
457 rom_table_end += 0xffff; // 64K align
458 rom_table_end &= ~0xffff;
459 printk_debug("0x%08lx \n", rom_table_end);
461 #if (HAVE_OPTION_TABLE == 1)
463 struct lb_record *rec_dest, *rec_src;
464 /* Write the option config table... */
465 rec_dest = lb_new_record(head);
466 rec_src = (struct lb_record *)(void *)&option_table;
467 memcpy(rec_dest, rec_src, rec_src->size);
468 /* Create cmos checksum entry in coreboot table */
469 lb_cmos_checksum(head);
472 /* Record where RAM is located */
473 mem = build_lb_mem(head);
475 /* Record the mptable and the the lb_table (This will be adjusted later) */
476 lb_add_memory_range(mem, LB_MEM_TABLE,
477 low_table_start, low_table_end - low_table_start);
479 /* Record the pirq table, acpi tables, and maybe the mptable */
480 lb_add_memory_range(mem, LB_MEM_TABLE,
481 rom_table_start, rom_table_end-rom_table_start);
483 #if (HAVE_MAINBOARD_RESOURCES == 1)
484 add_mainboard_resources(mem);
488 * I assume that there is always memory at immediately after
489 * the low_table_end. This means that after I setup the coreboot table.
490 * I can trivially fixup the reserved memory ranges to hold the correct
491 * size of the coreboot table.
494 /* Record our motherboard */
496 /* Record the serial port, if present */
498 /* Record our console setup */
500 /* Record our various random string information */
503 /* Remember where my valid memory ranges are */
504 return lb_table_fini(head, 1);