unsigned long write_coreboot_table(
unsigned long low_table_start, unsigned long low_table_end,
unsigned long rom_table_start, unsigned long rom_table_end)
{
struct lb_header *head;
if (low_table_start || low_table_end) {
printk(BIOS_DEBUG, "Writing table forward entry at 0x%08lx\n",
low_table_end);
head = lb_table_init(low_table_end);
lb_forward(head, (struct lb_header*)rom_table_end);
low_table_end = (unsigned long) lb_table_fini(head);
printk(BIOS_DEBUG, "Table forward entry ends at 0x%08lx.\n",
low_table_end);
low_table_end = ALIGN(low_table_end, 4096);
printk(BIOS_DEBUG, "... aligned to 0x%08lx\n", low_table_end);
}
printk(BIOS_DEBUG, "Writing coreboot table at 0x%08lx\n",
rom_table_end);
head = lb_table_init(rom_table_end);
rom_table_end = (unsigned long)head;
printk(BIOS_DEBUG, "rom_table_end = 0x%08lx\n", rom_table_end);
rom_table_end = ALIGN(rom_table_end, (64 * 1024));
printk(BIOS_DEBUG, "... aligned to 0x%08lx\n", rom_table_end);
#if CONFIG_USE_OPTION_TABLE
{
struct cmos_option_table *option_table =
cbfs_boot_map_with_leak("cmos_layout.bin",
CBFS_COMPONENT_CMOS_LAYOUT, NULL);
if (option_table) {
struct lb_record *rec_dest = lb_new_record(head);
/* Copy the option config table, it's already a lb_record... */
memcpy(rec_dest, option_table, option_table->size);
/* Create cmos checksum entry in coreboot table */
lb_cmos_checksum(head);
} else {
printk(BIOS_ERR, "cmos_layout.bin could not be found!\n");
}
}
#endif
/* Initialize the memory map at boot time. */
bootmem_init();
if (low_table_start || low_table_end) {
uint64_t size = low_table_end - low_table_start;
/* Record the mptable and the the lb_table.
* (This will be adjusted later) */
bootmem_add_range(low_table_start, size, LB_MEM_TABLE);
}
/* Record the pirq table, acpi tables, and maybe the mptable. However,
* these only need to be added when the rom_table is sitting below
* 1MiB. If it isn't that means high tables are being written.
* The code below handles high tables correctly. */
if (rom_table_end <= (1 << 20)) {
uint64_t size = rom_table_end - rom_table_start;
bootmem_add_range(rom_table_start, size, LB_MEM_TABLE);
}
/* No other memory areas can be added after the memory table has been
* committed as the entries won't show up in the serialize mem table. */
bootmem_write_memory_table(lb_memory(head));
/* Record our motherboard */
lb_mainboard(head);
/* Record the serial ports and consoles */
#if CONFIG_CONSOLE_SERIAL
uart_fill_lb(head);
#endif
#if CONFIG_CONSOLE_USB
lb_add_console(LB_TAG_CONSOLE_EHCI, head);
#endif
/* Record our various random string information */
lb_strings(head);
lb_record_version_timestamp(head);
/* Record our framebuffer */
lb_framebuffer(head);
#if CONFIG_CHROMEOS
/* Record our GPIO settings (ChromeOS specific) */
lb_gpios(head);
/* pass along the VDAT buffer address */
lb_vdat(head);
/* pass along VBNV offsets in CMOS */
lb_vbnv(head);
/* pass along the vboot_handoff address. */
lb_vboot_handoff(head);
#endif
/* Add board ID if available */
lb_board_id(head);
/* Add RAM config if available */
lb_ram_code(head);
#if IS_ENABLED(CONFIG_SPI_FLASH)
/* Add SPI flash description if available */
lb_spi_flash(head);
#endif
add_cbmem_pointers(head);
/* Add board-specific table entries, if any. */
lb_board(head);
#if IS_ENABLED(CONFIG_CHROMEOS_RAMOOPS)
lb_ramoops(head);
#endif
lb_boot_media_params(head);
/* Add all cbmem entries into the coreboot tables. */
cbmem_add_records_to_cbtable(head);
/* Remember where my valid memory ranges are */
return lb_table_fini(head);
}
unsigned long write_coreboot_table(
unsigned long low_table_start, unsigned long low_table_end,
unsigned long rom_table_start, unsigned long rom_table_end)
{
struct lb_header *head;
struct lb_memory *mem;
if (low_table_start || low_table_end) {
printk(BIOS_DEBUG, "Writing table forward entry at 0x%08lx\n",
low_table_end);
head = lb_table_init(low_table_end);
lb_forward(head, (struct lb_header*)rom_table_end);
low_table_end = (unsigned long) lb_table_fini(head, 0);
printk(BIOS_DEBUG, "Table forward entry ends at 0x%08lx.\n",
low_table_end);
low_table_end = ALIGN(low_table_end, 4096);
printk(BIOS_DEBUG, "... aligned to 0x%08lx\n", low_table_end);
}
printk(BIOS_DEBUG, "Writing coreboot table at 0x%08lx\n",
rom_table_end);
head = lb_table_init(rom_table_end);
rom_table_end = (unsigned long)head;
printk(BIOS_DEBUG, "rom_table_end = 0x%08lx\n", rom_table_end);
rom_table_end = ALIGN(rom_table_end, (64 * 1024));
printk(BIOS_DEBUG, "... aligned to 0x%08lx\n", rom_table_end);
#if CONFIG_USE_OPTION_TABLE
{
struct cmos_option_table *option_table = cbfs_get_file_content(
CBFS_DEFAULT_MEDIA, "cmos_layout.bin",
CBFS_COMPONENT_CMOS_LAYOUT);
if (option_table) {
struct lb_record *rec_dest = lb_new_record(head);
/* Copy the option config table, it's already a lb_record... */
memcpy(rec_dest, option_table, option_table->size);
/* Create cmos checksum entry in coreboot table */
lb_cmos_checksum(head);
} else {
printk(BIOS_ERR, "cmos_layout.bin could not be found!\n");
}
}
#endif
/* The Linux kernel assumes this region is reserved */
/* Record where RAM is located */
mem = build_lb_mem(head);
if (low_table_start || low_table_end) {
/* Record the mptable and the the lb_table.
* (This will be adjusted later) */
lb_add_memory_range(mem, LB_MEM_TABLE,
low_table_start, low_table_end - low_table_start);
}
/* Record the pirq table, acpi tables, and maybe the mptable. However,
* these only need to be added when the rom_table is sitting below
* 1MiB. If it isn't that means high tables are being written.
* The code below handles high tables correctly. */
if (rom_table_end <= (1 << 20))
lb_add_memory_range(mem, LB_MEM_TABLE,
rom_table_start, rom_table_end - rom_table_start);
#if CONFIG_DYNAMIC_CBMEM
cbmem_add_lb_mem(mem);
#else /* CONFIG_DYNAMIC_CBMEM */
lb_add_memory_range(mem, LB_MEM_TABLE,
high_tables_base, high_tables_size);
#endif /* CONFIG_DYNAMIC_CBMEM */
/* Add reserved regions */
add_lb_reserved(mem);
lb_dump_memory_ranges(mem);
/* Note:
* I assume that there is always memory at immediately after
* the low_table_end. This means that after I setup the coreboot table.
* I can trivially fixup the reserved memory ranges to hold the correct
* size of the coreboot table.
*/
/* Record our motherboard */
lb_mainboard(head);
/* Record the serial port, if present */
lb_serial(head);
/* Record our console setup */
lb_console(head);
/* Record our various random string information */
lb_strings(head);
/* Record our framebuffer */
lb_framebuffer(head);
#if CONFIG_CHROMEOS
/* Record our GPIO settings (ChromeOS specific) */
lb_gpios(head);
/* pass along the VDAT buffer adress */
lb_vdat(head);
/* pass along VBNV offsets in CMOS */
lb_vbnv(head);
/* pass along the vboot_handoff address. */
lb_vboot_handoff(head);
#endif
add_cbmem_pointers(head);
/* Remember where my valid memory ranges are */
return lb_table_fini(head, 1);
}
static uintptr_t write_coreboot_table(uintptr_t rom_table_end)
{
struct lb_header *head;
printk(BIOS_DEBUG, "Writing coreboot table at 0x%08lx\n",
(long)rom_table_end);
head = lb_table_init(rom_table_end);
#if CONFIG(USE_OPTION_TABLE)
{
struct cmos_option_table *option_table =
cbfs_boot_map_with_leak("cmos_layout.bin",
CBFS_COMPONENT_CMOS_LAYOUT, NULL);
if (option_table) {
struct lb_record *rec_dest = lb_new_record(head);
/* Copy the option config table, it's already a
* lb_record...
*/
memcpy(rec_dest, option_table, option_table->size);
/* Create cmos checksum entry in coreboot table */
lb_cmos_checksum(head);
} else {
printk(BIOS_ERR,
"cmos_layout.bin could not be found!\n");
}
}
#endif
/* Serialize resource map into mem table types (LB_MEM_*) */
bootmem_write_memory_table(lb_memory(head));
/* Record our motherboard */
lb_mainboard(head);
/* Record the serial ports and consoles */
#if CONFIG(CONSOLE_SERIAL)
uart_fill_lb(head);
#endif
#if CONFIG(CONSOLE_USB)
lb_add_console(LB_TAG_CONSOLE_EHCI, head);
#endif
/* Record our various random string information */
lb_strings(head);
lb_record_version_timestamp(head);
/* Record our framebuffer */
lb_framebuffer(head);
#if CONFIG(CHROMEOS)
/* Record our GPIO settings (ChromeOS specific) */
lb_gpios(head);
/* pass along VBNV offsets in CMOS */
lb_vbnv(head);
#endif
if (CONFIG(VBOOT)) {
/* pass along the vboot_handoff address. */
lb_vboot_handoff(head);
/* pass along the vboot workbuf address. */
lb_vboot_workbuf(head);
}
/* Add strapping IDs if available */
lb_board_id(head);
lb_ram_code(head);
lb_sku_id(head);
/* Add SPI flash description if available */
if (CONFIG(BOOT_DEVICE_SPI_FLASH))
lb_spi_flash(head);
add_cbmem_pointers(head);
/* Add board-specific table entries, if any. */
lb_board(head);
#if CONFIG(CHROMEOS_RAMOOPS)
lb_ramoops(head);
#endif
lb_boot_media_params(head);
/* Add architecture records. */
lb_arch_add_records(head);
/* Add all cbmem entries into the coreboot tables. */
cbmem_add_records_to_cbtable(head);
/* Remember where my valid memory ranges are */
return lb_table_fini(head);
}