Unify coreboot table generation

coreboot tables are, unlike general system tables, a platform
independent concept. Hence, use the same code for coreboot table
generation on all platforms. lib/coreboot_tables.c is based
on the x86 version of the file, because some important fixes
were missed on the ARMv7 version lately.

Change-Id: Icc38baf609f10536a320d21ac64408bef44bb77d
Signed-off-by: Stefan Reinauer <reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/2863
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)

2 files changed, 726 insertions, 0 deletions

diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 1f2ad96735..6193e63cdb 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -54,6 +54,7 @@ romstage-$(CONFIG_ARCH_X86) += gcc.c
 
 ramstage-y += hardwaremain.c
 ramstage-y += selfboot.c
+ramstage-y += coreboot_table.c
 ifneq ($(CONFIG_HAVE_ARCH_MEMSET),y)
 ramstage-y += memset.c
 endif
diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c
new file mode 100644
index 0000000000..84eb5a65a9
--- /dev/null
+++ b/src/lib/coreboot_table.c
@@ -0,0 +1,725 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2003-2004 Eric Biederman
+ * Copyright (C) 2005-2010 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <ip_checksum.h>
+#include <boot/coreboot_tables.h>
+#include <string.h>
+#include <version.h>
+#include <device/device.h>
+#include <stdlib.h>
+#include <cbfs.h>
+#include <cbmem.h>
+#if CONFIG_USE_OPTION_TABLE
+#include <option_table.h>
+#endif
+#if CONFIG_CHROMEOS
+#if CONFIG_GENERATE_ACPI_TABLES
+#include <arch/acpi.h>
+#endif
+#include <vendorcode/google/chromeos/chromeos.h>
+#include <vendorcode/google/chromeos/gnvs.h>
+#endif
+
+static struct lb_header *lb_table_init(unsigned long addr)
+{
+	struct lb_header *header;
+
+	/* 16 byte align the address */
+	addr += 15;
+	addr &= ~15;
+
+	header = (void *)addr;
+	header->signature[0] = 'L';
+	header->signature[1] = 'B';
+	header->signature[2] = 'I';
+	header->signature[3] = 'O';
+	header->header_bytes = sizeof(*header);
+	header->header_checksum = 0;
+	header->table_bytes = 0;
+	header->table_checksum = 0;
+	header->table_entries = 0;
+	return header;
+}
+
+static struct lb_record *lb_first_record(struct lb_header *header)
+{
+	struct lb_record *rec;
+	rec = (void *)(((char *)header) + sizeof(*header));
+	return rec;
+}
+
+static struct lb_record *lb_last_record(struct lb_header *header)
+{
+	struct lb_record *rec;
+	rec = (void *)(((char *)header) + sizeof(*header) + header->table_bytes);
+	return rec;
+}
+
+static struct lb_record *lb_new_record(struct lb_header *header)
+{
+	struct lb_record *rec;
+	rec = lb_last_record(header);
+	if (header->table_entries) {
+		header->table_bytes += rec->size;
+	}
+	rec = lb_last_record(header);
+	header->table_entries++;
+	rec->tag = LB_TAG_UNUSED;
+	rec->size = sizeof(*rec);
+	return rec;
+}
+
+static struct lb_memory *lb_memory(struct lb_header *header)
+{
+	struct lb_record *rec;
+	struct lb_memory *mem;
+	rec = lb_new_record(header);
+	mem = (struct lb_memory *)rec;
+	mem->tag = LB_TAG_MEMORY;
+	mem->size = sizeof(*mem);
+	return mem;
+}
+
+static struct lb_serial *lb_serial(struct lb_header *header)
+{
+#if CONFIG_CONSOLE_SERIAL8250
+	struct lb_record *rec;
+	struct lb_serial *serial;
+	rec = lb_new_record(header);
+	serial = (struct lb_serial *)rec;
+	serial->tag = LB_TAG_SERIAL;
+	serial->size = sizeof(*serial);
+	serial->type = LB_SERIAL_TYPE_IO_MAPPED;
+	serial->baseaddr = CONFIG_TTYS0_BASE;
+	serial->baud = CONFIG_TTYS0_BAUD;
+	return serial;
+#elif CONFIG_CONSOLE_SERIAL8250MEM || CONFIG_CONSOLE_SERIAL_UART
+	if (uartmem_getbaseaddr()) {
+		struct lb_record *rec;
+		struct lb_serial *serial;
+		rec = lb_new_record(header);
+		serial = (struct lb_serial *)rec;
+		serial->tag = LB_TAG_SERIAL;
+		serial->size = sizeof(*serial);
+		serial->type = LB_SERIAL_TYPE_MEMORY_MAPPED;
+		serial->baseaddr = uartmem_getbaseaddr();
+		serial->baud = CONFIG_TTYS0_BAUD;
+		return serial;
+	} else {
+		return NULL;
+	}
+#else
+	return NULL;
+#endif
+}
+
+#if CONFIG_CONSOLE_SERIAL || CONFIG_CONSOLE_LOGBUF || CONFIG_USBDEBUG
+static void add_console(struct lb_header *header, u16 consoletype)
+{
+	struct lb_console *console;
+
+	console = (struct lb_console *)lb_new_record(header);
+	console->tag = LB_TAG_CONSOLE;
+	console->size = sizeof(*console);
+	console->type = consoletype;
+}
+#endif
+
+static void lb_console(struct lb_header *header)
+{
+#if CONFIG_CONSOLE_SERIAL8250
+	add_console(header, LB_TAG_CONSOLE_SERIAL8250);
+#endif
+#if CONFIG_CONSOLE_SERIAL8250MEM || CONFIG_CONSOLE_SERIAL_UART
+	add_console(header, LB_TAG_CONSOLE_SERIAL8250MEM);
+#endif
+#if CONFIG_CONSOLE_LOGBUF
+	add_console(header, LB_TAG_CONSOLE_LOGBUF);
+#endif
+#if CONFIG_USBDEBUG
+	add_console(header, LB_TAG_CONSOLE_EHCI);
+#endif
+}
+
+static void lb_framebuffer(struct lb_header *header)
+{
+#if CONFIG_FRAMEBUFFER_KEEP_VESA_MODE || CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT
+	void fill_lb_framebuffer(struct lb_framebuffer *framebuffer);
+	int vbe_mode_info_valid(void);
+
+	// If there isn't any mode info to put in the table, don't ask for it
+	// to be filled with junk.
+	if (!vbe_mode_info_valid())
+		return;
+	struct lb_framebuffer *framebuffer;
+	framebuffer = (struct lb_framebuffer *)lb_new_record(header);
+	framebuffer->tag = LB_TAG_FRAMEBUFFER;
+	framebuffer->size = sizeof(*framebuffer);
+	fill_lb_framebuffer(framebuffer);
+#endif
+}
+
+#if CONFIG_CHROMEOS
+static void lb_gpios(struct lb_header *header)
+{
+	struct lb_gpios *gpios;
+	gpios = (struct lb_gpios *)lb_new_record(header);
+	gpios->tag = LB_TAG_GPIO;
+	gpios->size = sizeof(*gpios);
+	gpios->count = 0;
+	fill_lb_gpios(gpios);
+}
+
+static void lb_vdat(struct lb_header *header)
+{
+#if CONFIG_GENERATE_ACPI_TABLES
+	struct lb_vdat* vdat;
+
+	vdat = (struct lb_vdat *)lb_new_record(header);
+	vdat->tag = LB_TAG_VDAT;
+	vdat->size = sizeof(*vdat);
+	acpi_get_vdat_info(&vdat->vdat_addr, &vdat->vdat_size);
+#endif
+}
+
+static void lb_vbnv(struct lb_header *header)
+{
+#if CONFIG_PC80_SYSTEM
+	struct lb_vbnv* vbnv;
+
+	vbnv = (struct lb_vbnv *)lb_new_record(header);
+	vbnv->tag = LB_TAG_VBNV;
+	vbnv->size = sizeof(*vbnv);
+	vbnv->vbnv_start = CONFIG_VBNV_OFFSET + 14;
+	vbnv->vbnv_size = CONFIG_VBNV_SIZE;
+#endif
+}
+
+#if CONFIG_VBOOT_VERIFY_FIRMWARE
+static void lb_vboot_handoff(struct lb_header *header)
+{
+	void *addr;
+	uint32_t size;
+	struct lb_vboot_handoff* vbho;
+
+	if (vboot_get_handoff_info(&addr, &size))
+		return;
+
+	vbho = (struct lb_vboot_handoff *)lb_new_record(header);
+	vbho->tag = LB_TAB_VBOOT_HANDOFF;
+	vbho->size = sizeof(*vbho);
+	vbho->vboot_handoff_addr = addr;
+	vbho->vboot_handoff_size = size;
+}
+#else
+static inline void lb_vboot_handoff(struct lb_header *header) {}
+#endif /* CONFIG_VBOOT_VERIFY_FIRMWARE */
+#endif /* CONFIG_CHROMEOS */
+
+static void add_cbmem_pointers(struct lb_header *header)
+{
+	/*
+	 * These CBMEM sections' addresses are included in the coreboot table
+	 * with the appropriate tags.
+	 */
+	const struct section_id {
+		int cbmem_id;
+		int table_tag;
+	} section_ids[] = {
+		{CBMEM_ID_TIMESTAMP, LB_TAG_TIMESTAMPS},
+		{CBMEM_ID_CONSOLE, LB_TAG_CBMEM_CONSOLE}
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(section_ids); i++) {
+		const struct section_id *sid = section_ids + i;
+		struct lb_cbmem_ref *cbmem_ref;
+		void *cbmem_addr = cbmem_find(sid->cbmem_id);
+
+		if (!cbmem_addr)
+			continue;  /* This section is not present */
+
+		cbmem_ref = (struct lb_cbmem_ref *)lb_new_record(header);
+		if (!cbmem_ref) {
+			printk(BIOS_ERR, "No more room in coreboot table!\n");
+			break;
+		}
+		cbmem_ref->tag = sid->table_tag;
+		cbmem_ref->size = sizeof(*cbmem_ref);
+		cbmem_ref->cbmem_addr = (unsigned long)cbmem_addr;
+	}
+}
+
+static struct lb_mainboard *lb_mainboard(struct lb_header *header)
+{
+	struct lb_record *rec;
+	struct lb_mainboard *mainboard;
+	rec = lb_new_record(header);
+	mainboard = (struct lb_mainboard *)rec;
+	mainboard->tag = LB_TAG_MAINBOARD;
+
+	mainboard->size = (sizeof(*mainboard) +
+		strlen(mainboard_vendor) + 1 +
+		strlen(mainboard_part_number) + 1 +
+		3) & ~3;
+
+	mainboard->vendor_idx = 0;
+	mainboard->part_number_idx = strlen(mainboard_vendor) + 1;
+
+	memcpy(mainboard->strings + mainboard->vendor_idx,
+		mainboard_vendor,      strlen(mainboard_vendor) + 1);
+	memcpy(mainboard->strings + mainboard->part_number_idx,
+		mainboard_part_number, strlen(mainboard_part_number) + 1);
+
+	return mainboard;
+}
+
+#if CONFIG_USE_OPTION_TABLE
+static struct cmos_checksum *lb_cmos_checksum(struct lb_header *header)
+{
+	struct lb_record *rec;
+	struct cmos_checksum *cmos_checksum;
+	rec = lb_new_record(header);
+	cmos_checksum = (struct cmos_checksum *)rec;
+	cmos_checksum->tag = LB_TAG_OPTION_CHECKSUM;
+
+	cmos_checksum->size = (sizeof(*cmos_checksum));
+
+	cmos_checksum->range_start = LB_CKS_RANGE_START * 8;
+	cmos_checksum->range_end = ( LB_CKS_RANGE_END * 8 ) + 7;
+	cmos_checksum->location = LB_CKS_LOC * 8;
+	cmos_checksum->type = CHECKSUM_PCBIOS;
+
+	return cmos_checksum;
+}
+#endif
+
+static void lb_strings(struct lb_header *header)
+{
+	static const struct {
+		uint32_t tag;
+		const char *string;
+	} strings[] = {
+		{ LB_TAG_VERSION,        coreboot_version,        },
+		{ LB_TAG_EXTRA_VERSION,  coreboot_extra_version,  },
+		{ LB_TAG_BUILD,          coreboot_build,          },
+		{ LB_TAG_COMPILE_TIME,   coreboot_compile_time,   },
+		{ LB_TAG_COMPILE_BY,     coreboot_compile_by,     },
+		{ LB_TAG_COMPILE_HOST,   coreboot_compile_host,   },
+		{ LB_TAG_COMPILE_DOMAIN, coreboot_compile_domain, },
+		{ LB_TAG_COMPILER,       coreboot_compiler,       },
+		{ LB_TAG_LINKER,         coreboot_linker,         },
+		{ LB_TAG_ASSEMBLER,      coreboot_assembler,      },
+	};
+	unsigned int i;
+	for(i = 0; i < ARRAY_SIZE(strings); i++) {
+		struct lb_string *rec;
+		size_t len;
+		rec = (struct lb_string *)lb_new_record(header);
+		len = strlen(strings[i].string);
+		rec->tag = strings[i].tag;
+		rec->size = (sizeof(*rec) + len + 1 + 3) & ~3;
+		memcpy(rec->string, strings[i].string, len+1);
+	}
+
+}
+
+static struct lb_forward *lb_forward(struct lb_header *header, struct lb_header *next_header)
+{
+	struct lb_record *rec;
+	struct lb_forward *forward;
+	rec = lb_new_record(header);
+	forward = (struct lb_forward *)rec;
+	forward->tag = LB_TAG_FORWARD;
+	forward->size = sizeof(*forward);
+	forward->forward = (uint64_t)(unsigned long)next_header;
+	return forward;
+}
+
+static void lb_memory_range(struct lb_memory *mem,
+	uint32_t type, uint64_t start, uint64_t size)
+{
+	int entries;
+	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+	mem->map[entries].start = pack_lb64(start);
+	mem->map[entries].size = pack_lb64(size);
+	mem->map[entries].type = type;
+	mem->size += sizeof(mem->map[0]);
+}
+
+static void lb_reserve_table_memory(struct lb_header *head)
+{
+/* Dynamic cbmem has already reserved the memory where the coreboot tables
+ * reside. Therefore, there is nothing to fix up. */
+#if !CONFIG_DYNAMIC_CBMEM
+	struct lb_record *last_rec;
+	struct lb_memory *mem;
+	uint64_t start;
+	uint64_t end;
+	int i, entries;
+
+	last_rec = lb_last_record(head);
+	mem = get_lb_mem();
+	start = (unsigned long)head;
+	end = (unsigned long)last_rec;
+	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+	/* Resize the right two memory areas so this table is in
+	 * a reserved area of memory.  Everything has been carefully
+	 * setup so that is all we need to do.
+	 */
+	for(i = 0; i < entries; i++ ) {
+		uint64_t map_start = unpack_lb64(mem->map[i].start);
+		uint64_t map_end = map_start + unpack_lb64(mem->map[i].size);
+		/* Does this area need to be expanded? */
+		if (map_end == start) {
+			mem->map[i].size = pack_lb64(end - map_start);
+		}
+		/* Does this area need to be contracted? */
+		else if (map_start == start) {
+			mem->map[i].start = pack_lb64(end);
+			mem->map[i].size = pack_lb64(map_end - end);
+		}
+	}
+#endif
+}
+
+static unsigned long lb_table_fini(struct lb_header *head, int fixup)
+{
+	struct lb_record *rec, *first_rec;
+	rec = lb_last_record(head);
+	if (head->table_entries) {
+		head->table_bytes += rec->size;
+	}
+
+	if (fixup)
+		lb_reserve_table_memory(head);
+
+	first_rec = lb_first_record(head);
+	head->table_checksum = compute_ip_checksum(first_rec, head->table_bytes);
+	head->header_checksum = 0;
+	head->header_checksum = compute_ip_checksum(head, sizeof(*head));
+	printk(BIOS_DEBUG,
+	       "Wrote coreboot table at: %p, 0x%x bytes, checksum %x\n",
+	       head, head->table_bytes, head->table_checksum);
+	return (unsigned long)rec + rec->size;
+}
+
+static void lb_cleanup_memory_ranges(struct lb_memory *mem)
+{
+	int entries;
+	int i, j;
+	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+
+	/* Sort the lb memory ranges */
+	for(i = 0; i < entries; i++) {
+		uint64_t entry_start = unpack_lb64(mem->map[i].start);
+		for(j = i + 1; j < entries; j++) {
+			uint64_t temp_start = unpack_lb64(mem->map[j].start);
+			if (temp_start < entry_start) {
+				struct lb_memory_range tmp;
+				tmp = mem->map[i];
+				mem->map[i] = mem->map[j];
+				mem->map[j] = tmp;
+			}
+		}
+	}
+
+	/* Merge adjacent entries */
+	for(i = 0; (i + 1) < entries; i++) {
+		uint64_t start, end, nstart, nend;
+		if (mem->map[i].type != mem->map[i + 1].type) {
+			continue;
+		}
+		start  = unpack_lb64(mem->map[i].start);
+		end    = start + unpack_lb64(mem->map[i].size);
+		nstart = unpack_lb64(mem->map[i + 1].start);
+		nend   = nstart + unpack_lb64(mem->map[i + 1].size);
+		if ((start <= nstart) && (end >= nstart)) {
+			if (start > nstart) {
+				start = nstart;
+			}
+			if (end < nend) {
+				end = nend;
+			}
+			/* Record the new region size */
+			mem->map[i].start = pack_lb64(start);
+			mem->map[i].size  = pack_lb64(end - start);
+
+			/* Delete the entry I have merged with */
+			memmove(&mem->map[i + 1], &mem->map[i + 2],
+				((entries - i - 2) * sizeof(mem->map[0])));
+			mem->size -= sizeof(mem->map[0]);
+			entries -= 1;
+			/* See if I can merge with the next entry as well */
+			i -= 1;
+		}
+	}
+}
+
+static void lb_remove_memory_range(struct lb_memory *mem,
+	uint64_t start, uint64_t size)
+{
+	uint64_t end;
+	int entries;
+	int i;
+
+	end = start + size;
+	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+
+	/* Remove a reserved area from the memory map */
+	for(i = 0; i < entries; i++) {
+		uint64_t map_start = unpack_lb64(mem->map[i].start);
+		uint64_t map_end   = map_start + unpack_lb64(mem->map[i].size);
+		if ((start <= map_start) && (end >= map_end)) {
+			/* Remove the completely covered range */
+			memmove(&mem->map[i], &mem->map[i + 1],
+				((entries - i - 1) * sizeof(mem->map[0])));
+			mem->size -= sizeof(mem->map[0]);
+			entries -= 1;
+			/* Since the index will disappear revisit what will appear here */
+			i -= 1;
+		}
+		else if ((start > map_start) && (end < map_end)) {
+			/* Split the memory range */
+			memmove(&mem->map[i + 1], &mem->map[i],
+				((entries - i) * sizeof(mem->map[0])));
+			mem->size += sizeof(mem->map[0]);
+			entries += 1;
+			/* Update the first map entry */
+			mem->map[i].size = pack_lb64(start - map_start);
+			/* Update the second map entry */
+			mem->map[i + 1].start = pack_lb64(end);
+			mem->map[i + 1].size  = pack_lb64(map_end - end);
+			/* Don't bother with this map entry again */
+			i += 1;
+		}
+		else if ((start <= map_start) && (end > map_start)) {
+			/* Shrink the start of the memory range */
+			mem->map[i].start = pack_lb64(end);
+			mem->map[i].size  = pack_lb64(map_end - end);
+		}
+		else if ((start < map_end) && (start > map_start)) {
+			/* Shrink the end of the memory range */
+			mem->map[i].size = pack_lb64(start - map_start);
+		}
+	}
+}
+
+void lb_add_memory_range(struct lb_memory *mem,
+	uint32_t type, uint64_t start, uint64_t size)
+{
+	lb_remove_memory_range(mem, start, size);
+	lb_memory_range(mem, type, start, size);
+	lb_cleanup_memory_ranges(mem);
+}
+
+static void lb_dump_memory_ranges(struct lb_memory *mem)
+{
+	int entries;
+	int i;
+	entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+
+	printk(BIOS_DEBUG, "coreboot memory table:\n");
+	for(i = 0; i < entries; i++) {
+		uint64_t entry_start = unpack_lb64(mem->map[i].start);
+		uint64_t entry_size = unpack_lb64(mem->map[i].size);
+		const char *entry_type;
+
+		switch (mem->map[i].type) {
+		case LB_MEM_RAM: entry_type="RAM"; break;
+		case LB_MEM_RESERVED: entry_type="RESERVED"; break;
+		case LB_MEM_ACPI: entry_type="ACPI"; break;
+		case LB_MEM_NVS: entry_type="NVS"; break;
+		case LB_MEM_UNUSABLE: entry_type="UNUSABLE"; break;
+		case LB_MEM_VENDOR_RSVD: entry_type="VENDOR RESERVED"; break;
+		case LB_MEM_TABLE: entry_type="CONFIGURATION TABLES"; break;
+		default: entry_type="UNKNOWN!"; break;
+		}
+
+		printk(BIOS_DEBUG, "%2d. %016llx-%016llx: %s\n",
+			i, entry_start, entry_start+entry_size-1, entry_type);
+
+	}
+}
+
+/* Routines to extract part so the coreboot table or
+ * information from the coreboot table after we have written it.
+ * Currently get_lb_mem relies on a global we can change the
+ * implementaiton.
+ */
+static struct lb_memory *mem_ranges = NULL;
+
+struct lb_memory *get_lb_mem(void)
+{
+	return mem_ranges;
+}
+
+static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res)
+{
+	struct lb_memory *mem = gp;
+	lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
+}
+
+static struct lb_memory *build_lb_mem(struct lb_header *head)
+{
+	struct lb_memory *mem;
+
+	/* Record where the lb memory ranges will live */
+	mem = lb_memory(head);
+	mem_ranges = mem;
+
+	/* Build the raw table of memory */
+	search_global_resources(
+		IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
+		build_lb_mem_range, mem);
+	lb_cleanup_memory_ranges(mem);
+	return mem;
+}
+
+static void lb_add_rsvd_range(void *gp, struct device *dev, struct resource *res)
+{
+	struct lb_memory *mem = gp;
+	lb_add_memory_range(mem, LB_MEM_RESERVED, res->base, res->size);
+}
+
+static void add_lb_reserved(struct lb_memory *mem)
+{
+	/* Add reserved ranges */
+	search_global_resources(
+		IORESOURCE_MEM | IORESOURCE_RESERVE, IORESOURCE_MEM | IORESOURCE_RESERVE,
+		lb_add_rsvd_range, mem);
+}
+
+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);
+}