platform/acer/zgb/vpd.c

/*
 * Copyright 2012, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *    * Neither the name of Google Inc. nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "mosys/log.h"
#include "mosys/platform.h"

#include "lib/smbios.h"
#include "lib/vpd.h"

int acer_chromia700_vpd_setup(struct platform_intf *intf)
{
	struct smbios_table table;
	unsigned int rom_base, rom_size;

	/*
	 * In this example, we'll pretend like there is VPD stored in the
	 * system firmware ROM. The ROM address is given by SMBIOS tables,
	 * though later we may wish to use something more sophisticated that
	 * probes the firmware ROM directly, like Flashrom does.
	 */
	if (smbios_find_table(intf, SMBIOS_TYPE_BIOS, 0, &table,
	                      SMBIOS_LEGACY_ENTRY_BASE,
	                      SMBIOS_LEGACY_ENTRY_LEN) < 0) {
		lprintf(LOG_INFO, "Unable to calculate VPD address\n");

		/*
		 * FIXME: SMBIOS on this platform is a bit wonky at the moment,
		 * so we'll just fake it knowing the firmware ROM is 4MB.
		 */
		lprintf(LOG_INFO, "Assuming 4MB firmware ROM\n");
		rom_size = 4096 * 1024;
	} else {
		rom_size = (table.data.bios.rom_size_64k_blocks + 1) * 64 * 1024;
	}

	rom_base = 0xffffffff - rom_size + 1;
	vpd_rom_base = rom_base;
	vpd_rom_size = rom_size;

	return 0;
}

static char *acer_chromia700_vpd_get_serial(struct platform_intf *intf)
{
	if (intf->cb->vpd && intf->cb->vpd->system_serial)
		return intf->cb->vpd->system_serial(intf);
	else
		return NULL;

}

static char *acer_chromia700_vpd_get_sku(struct platform_intf *intf)
{
	if (intf->cb->vpd && intf->cb->vpd->system_sku)
		return intf->cb->vpd->system_sku(intf);
	else
		return NULL;
}


static char *acer_chromia700_vpd_get_google_hwqualid(struct platform_intf *intf)
{
	/* FIXME: noop for now */
	return NULL;
}

struct vpd_cb acer_chromia700_vpd_cb = {
	.system_serial		= &acer_chromia700_vpd_get_serial,
	.system_sku		= &acer_chromia700_vpd_get_sku,
	.google_hwqualid	= &acer_chromia700_vpd_get_google_hwqualid,
};